VariTrane VAV and Controls Catalog PRODUCT NOTE This ... - Dalkia

VariTrane ®
Products
Single-Duct and Dual-Duct
Parallel and Series Fan-Powered
Low-Height Parallel and Series Fan-Powered
VAV Controls
Diffusers
May 2006
VAV-PRC008-EN

Catalog
Contents
Features and Benefits FB 1 – 5
Application Considerations AC 1 – 23
Single-Duct Terminal Units SD 1 – 30
Dual-Duct Terminal Units DD 1 – 15
Parallel Fan-Powered Terminal Units FPP 1 – 37
Series Fan-Powered Terminal Units FPS 1 – 40
Low-Height Parallel Fan-Powered Terminal Units LHP 1 – 29
Low-Height Series Fan-Powered Terminal Units LHP 1 – 27
VariTrane Controls C 1 – 67
Diffusers D 1 – 34
Index by Nomenclature
Index by Section
IBN i – ii
IBS i – v
© 2006 American Standard, Inc All rights reserved

Features
and
Benefits
VariTrane – VAV Leadership:
VariTrane variable-air-volume (VAV)
units lead the industry in quality and
reliability and are designed to meet the
specific needs of today’s applications.
This generation of VariTrane units
builds upon the history of quality and
reliability and expands the products
into the most complete VAV offering in
the industry.
VCCF
Single-duct units provide an
economical energy-savings system
solution. This is the most common
type of VAV unit.
VSCF
Series fan-powered units have fans
which are always energized in
occupied mode. They are common in
premium VAV systems and in
applications such as conference
rooms, cafeterias, etc. looking for
constant high airflow rates.
LPCF
Low-height parallel units provide the
energy savings of an intermittent fan
with the flexibility of an 11"–11.5" casing
height. This is a good choice for tight
plenum spaces.
% HVAC Energy Consumption
100
Energy Efficiency:
A significant consumer of energy in
commercial buildings is heating and air
conditioning. One of the most energyefficient
HVAC solutions is the VAV
system. This inherent system efficiency,
along with high-quality, affordable DDC
controls, has steadily increased demand
for VAV systems over the years. VAV
systems save significant energy, comply
with ventilation requirements, and
provide reliable and personalized
occupant comfort.
90
80
70
60
50
VAV
System
Miami Mpls. Seattle Toronto
VAV
System w/
Pressure
Optimization
VAV
System w/
Ventilation Reset
and Pressure
Optimization
Fan Pressure Optimization and Ventilation Reset are
just two of the many energy-saving strategies offered
by Trane. Contact your local Trane Sales Office for
more details. (Analysis performed with Trace ® 700
building energy and economic analysis software.)
VDDF
Dual-duct units have two air valves.
One heating valve and one cooling air
valve modulate simultaneously to
provide occupant comfort. These
systems were popular prior to the
energy crisis of the early 1970s.
Popularity is increasing with system
concepts which use one valve for
maintaining and monitoring 100%
ventilation air.
LSCF
Low-height series units have been
used for years in projects with strict
plenum height requirements. Units
are available in 11.0" height.
Energy saving features of the Trane
VAV terminal units include:
• System strategies like Ventilation Reset,
and Static Pressure Optimization, etc.
• Night setback
• Occupied/unoccupied control
• Demand-controlled ventilation
• Electrically Commutated Motors (ECM)
• EarthWise Systems utilizing lowtemperature
air
To determine the potential energy
savings a VAV system can bring to
your applications, Trane offers
energy-modeling programs like
System Analyzer, and Trace 700 ®
simulation software. Contact your
local Trane Sales Engineer for
additional information.
VPCF
Fan-powered parallel units offer
energy savings due to intermittent fan
control. The fan energizes only in
heating mode when the space needs
heat. Additional energy savings are
obtained by using warm plenum air for
free reheat. Motor heat is never wasted
in parallel units. They are an excellent
choice when minimal zone heating is
needed.
VAV-PRC008-EN FB 1

Features
and
Benefits
New!
Control Flexibility—Trane
factory installs more VAV
controllers than any other
manufacturer in the industry.
In addition to Trane DDC
controls and simple factorymounting
of non-Trane VAV
controllers, Trane now offers a
LonMark controller that is
completely factorycommissioned
for the highest
quality installations available.
Labor savings are maximized
with Trane factorycommissioned
controllers.
Accurate Flow Ring—Housed and
recessed within the air valve to provide
flow ring handling/shipping protection.
The patented flow ring provides
unmatched airflow measurement
accuracy.
Rugged Air Valve—Trane air valves are
heavy gage steel with a continuous
welded seam to limit inlet deformation.
This provides consistent and repeatable
airflow across the flow ring.
Technologically Advanced
"SQ" Units— New superquiet
(SQ) fan/motor/wheel
assemblies are engineered
as an air delivery system to
provide the most efficient
design available in the
industry. For quiet comfort
you can trust, rely on Trane
SQ units.
Service Friendly
• External shaft with
removable shaft extension
and easily read position
indicator.
• Same-side NEC jumpback
clearance—provides all highand
low-voltage components
on the same side and
minimizes field labor.
• SQ fan-powered units have
improved accessability to
internal components
New!
Optional Narrow Corridor control box
configuration — designed for our
customers looking to minimize building
material expenses by squeezing more into
less space. Meets all NEC jumpback
clearance requirements for these extratight
areas. Narrow Corridor Configuration
not pictured here. Refer to Series Fan-
Powered dimensional data for reference
drawings.
Full Range of Insulation—From
double-wall to matte-faced, closed-cell
to foil-faced, Trane has the right
insulation for your project.
Tough Interlocking
Panels— Ruggedness and
rigidity are assured with
Trane’s patent-pending
interlocking panel
construction.
Superior Metal
Encapsulated Edges— All
VariTrane Units are complete
with metal encapsulated
edges to arrest cut insulation
fibers and prevent erosion in
the airstream.
Construction:
UL-listed products—
Safety and reliability are
vital in commercial
construction. All
VariTrane units are
completely listed in
accordance with UL -
1995 as terminal units.
This listing includes the VAV terminal
with electric heaters. Additionally, all
insulation materials pass UL 25/50
smoke and flame safety standards.
ARI Certified
Performance—
All VariTrane units
are ARI certified. ARI
880 guarantees the
pressure drop, flow
performance, and
acoustical performance
provided is reliable and has been
tested in accordance with industry
accepted standards. ARI 885 uses ARI
880 and applies accepted industry
methods to estimate expected “NC”
sound levels in an occupied space.
FB 2
Casing Design:
Interlocking Panels—VariTrane
products are manufactured in the most
state-of-the-art VAV facility in the world.
The patent-pending interlocking panels
are designed using integral I-beam
construction technology. This limits
deformation and creates tremendous
product rigidity. An additional benefit
is a smooth unit exterior with few
exposed screws—ideal for exposed
ceiling applications.
Metal Encapsulated Edges—All
VariTrane units are complete with
encapsulated edges to arrest cut fibers
and prevent erosion into the airstream.
This is the standard of care in
applications concerned with fiberglass
erosion or projects with either doublewall
or externally wrapped ductwork.
The Trane Air Valve—is at the heart of
VariTrane terminal units. This is where
airflow is measured and controlled.
Repeatability and ruggedness is vital.
VariTrane products are the most
rugged and reliable available.
Air Valve:
18-gage Cylinder—limits deformation
or damage during shipment and job
site handling, and provides even
airflow distribution across flow ring for
unmatched airflow measurement
accuracy.
Continuously Welded Seam — an
automated weld process creates the
highest quality continuous seam,
which is “right” every time. The
welded seam improves air valve
rigidity and creates consistent and
repeatable airflow across the flow
measurement device. This further
ensures even airflow across the flowmeasuring
device.
VAV-PRC008-EN

Features
and
Benefits
Flow Ring—The proven reliability of
the Trane flow ring is at the heart of all
VariTrane units. Trane’s patented flow
ring is now recessed within the air
valve cylinder to reduce the potential
for damage during job site handling
and installation.
External Shaft—This simple design
provides controller flexibility and is
designed for simple actuator field
replacement.
Position Indicator—The position
indicator shows current air valve
position to aid in system
commissioning.
External Actuator—This feature
increases serviceability and control
system compatibility.
Indoor Air Quality (IAQ)
Features:
The oil embargo of the early 1970s
created an energy crisis, which resulted
in tighter buildings, and reduced
ventilation requirements. A fallout
issue of tighter building construction
was poor indoor air quality. This
heightened IAQ awareness. IAQ issues
have been featured in publications
from the smallest towns to the largest
cities. System design should consider
applicable ventilation and IAQ
standards.(See your local Trane Sales
Engineer or visit www.trane.com for
additional information).
Good indoor air quality results from
units and systems which:
• Adhere to ventilation requirements
• Limit particulates from entering
occupied spaces
• Allow proper access for cleaning.
Access made easy on new VariTrane
units, as shown on this Series Fan-
Powered unit.
VariTrane units are designed with
simplified access and a full line of
insulation options including:
Matte-faced—Typical industry
standard with reduced first cost.
Closed-cell—This insulation has an
R-value and performance equivalent
to matte-faced insulation. The main
difference is the reduction of water
vapor transmission. Closed-cell is
designed for use in installations with a
high chance of water formation. (It has
been used to coat the exterior of chiller
evaporator barrels for many years.)
Foil-faced—A fiberglass insulation with
a thin aluminum coating on the air
stream side to prevent fibers from
becoming airborne. The aluminum
lining is acceptable for many
applications, however it is not as
rugged as double-wall
Double-wall—Premium insulation
often used in hospital applications with
insulation locked between metal liners.
This eliminates the possibility for
insulation entering the airstream.
IAQ relates to ventilation requirements,
particulates entering occupied spaces,
and ensuring units can be cleaned.
VariTrane units are the most prepared
IAQ units in the industry.
The end result is a reliable product
designed for peak performance,
regardless of job site conditions or
handling. VariTrane units are designed
for use in systems that operate up to
5" w.c. of inlet pressure.
Integrated
Comfort
Systems (Controls
Integration):
VariTrane units are designed to meet
today’s electronic and pneumatic
control system needs. An Integrated
Comfort System consists of units and
controls that are:
• Pre-engineered to consistently
integrate into your system “right out of
the box.”
• Factory-Commissioned for the highest
level of quality and reliability.
• Single-Sourced (controller and
equipment) to provide the assurance
that when you have system questions,
your local Trane Sales Office is your
personal full-service provider for all
your comfort needs.
(Additional control options and
sequence-of-operations are located in
the “Controls” section.)
Trane DDC Controller
DDC (communicating
electronic)—DDC controllers are
today’s industry standard. DDC
controllers provide system-level data
used to optimize SYSTEM
performance. Variables such as
occupied/unoccupied, minimum and
maximum cfm and temperature, valve
position, ventilation fraction, etc. are
available on a simple twisted-shielded
wire pair. For additional information,
see “Industry Issues: Energy Efficiency”.
Trane DDC controllers provide Tranedesigned
solid-state electronics
intended specifically for VAV
temperature control in space comfort
applications. DDC control capabilities
include:
• Pressure-independent (PI) operation—
Provides airflow required by the room
thermostat to maintain occupant
comfort. The controller automatically
adjusts valve position to maintain
required airflow. Minimum and
maximum airflow is factory-set and
field-adjustable.
• Factory-set airflow and temperatures
• Most advanced system integration in
the industry.
NEW!
Trane now offers a full line of LonTalk
controllers designed for simple
integration into any LonTalk control
system. These controllers are also
completely factory-commissioned (see
"Factory-installed vs. Factorycommissioned–page
FB4).
VAV-PRC008-EN FB 3

Features
and
Benefits
Pneumatic—Pneumatic controllers
provide proven reliability and
performance. A full line of options
provide:
• Highest quality PVR available, which
maximizes zone temperature control.
Pressure-independent operation
• All VariTrane pneumatic controllers use
the patented flow sensor input to
provide the most accurate
performance available.
Analog-Electronic Controller
Analog (non-communicating
electronic)—Analog controllers are
used in stand-alone applications where
communication/VAV system
coordination required is minimal. If
integration with a Building Automation
System (BAS) is required, DDC
controls are needed.
Factory-installed vs. Factory-commissioned:
Factory-installed and factory-commissioned terminology is often used
interchangeably. Trane takes great pride in being the industry leader in factorycommissioned
DDC controllers. The following table differentiates these concepts
and indicates where options can be obtained (either the field, or the factory):
Factory-installed Factory-commissioned
Transformer optionally installed X X
Wires terminated in reliable/ consistent setting X X
Controller mounted X X
Electric heat contactors and fan relay wired X X
Testing of heater contactors and fan relay
X
Controller addressing and associated testing
X
Minimum & Maximum airflows (occupied/unoccupied)
X
Minimum & Maximum temperature setpoints
(occupied/unoccupied)
X
Minimum ventilation requirements
(used to calculate ventilation fraction)
X
Thumbwheel enable/ disable
X
Heating offset
X
Factory-commissioned controllers provide the highest quality and most reliable
units for your VAV system. Additional testing verifies proper unit operation including
occupied/unoccupied airflow, temperature setpoints, communication link
functionality, and output device functionality. The benefits of factory-commissioning
are standard on VariTrane terminal units with Trane DDC controls, including the new
Trane LonMark DDC controller.
FB 4
VAV-PRC008-EN

Features
and
Benefits
Advanced Control
Sequences:
Trane is the industry leader in VAV
system integration and controls. This
leadership began with customers
seeking the most reliable VAV products
in the industry. The solution was
factory-commissioned products (see
Factory-installed vs. Factorycommissioned
on page FB 4). Since
then, it has blossomed to include
integrated ventilation and
pressurization control logic into the
control system.
Control strategies are often made
more complicated than necessary.
VariTrane DDC controls simplify control
strategies by pre-installing logic and
sequencing into the controller. This
information is available via a twistedshielded
wire pair, and accessible via a
Trane Summit Panel. Data is easily
accessed via a computer workstation
utilizing today’s industry standard
operating system.
Simplified solutions are available via
use of VariTrane unit-level DDC
controllers operating as part of a Tracer
Summit building automation system.
The latest ASHRAE Standards, such as
equation 6-1 of ASHRAE Standard 62,
can be pre-programmed into the
system to minimize the amount of
outside air required and remain in
compliance with industry standards.
This is known as “Ventilation Reset.”
Additionally, CO 2
sensor inputs are
available for simplified alarming and
“Demand Controlled Ventilation” logic.
Finally, “Static Pressure Optimization”
control logic can be used to minimize
supply fan BHP by adjusting duct
pressure to maximize VAV system
efficiency. Coordinating VAV controller
and VAV hardware with a single
manufacturer provides a single contact
for all HVAC system related questions.
Shown with touchscreens are the Tracer Summit Building Control Unit and the
VariTrac ® Central Control Panel. The new Trane LonMark controller also integrates
into non-Trane control systems that comprise a LONWORKS network.
VAV-PRC008-EN FB 5

Application
Considerations
Table of
Contents
Introduction
The VariTrane line of variable-airvolume
(VAV) products has been an
industry leader in performance and
quality for many years. The VariTrane
line includes single-duct VAV units,
dual-duct VAV units, fan-powered VAV
units (series, parallel, and low-height
series and parallel), direct digital
controls, pneumatic controls, analogelectronic
controls, direct digital control
retrofit kits and diffusers. This
application section will focus on VAV
units.
Introduction AC 1
Systems AC 2 – 4
Parallel vs. Series AC 5
Low-Temperature Air AC 6 – 7
Energy Savings and System Control AC 8
Agency Certifications AC 9
Control Types AC 10 – 12
Flow Measurement and Control AC 13 – 14
Reheat Options AC 15
Insulation AC 16
Acoustics AC 17 – 18
Duct Design AC 19
Selection Program AC 20
Best Practices AC 21
Unit Conversions AC 22
Additional References AC 23
VAV-PRC008-EN AC 1

Application
Considerations
Systems
VAV Systems
There are two primary types of VAV systems—single-duct and dual-duct.
Single-Duct Systems
Single-duct systems include one supply fan and a single supply duct, which is
attached to each zone. The supply fan delivers cooled air to the VAV zones in variable
volumes, depending upon the cooling requirements. The supply fan is usually
designed to modulate airflow delivered to the VAV zones.
Many VAV zones require heating as well as cooling. The supply air-handling unit
provides either no heat (cooling only), morning warm-up heat or occupied
(changeover) heat. In addition, heat may be provided at any individual VAV zone
(within the zone or within the VAV terminal) by reheating cool air provided by the
central air handler.
Variable-Air-Volume (VAV) System
EA
OA
supply
fan
cooling
coil
variablespeed
drive
PA
thermostat
RA
VAV
box
SA
No Heat
Central Cooling Only—In some systems, the central air handler provides only
cooling and ventilation during zone occupied periods. The supply air is maintained at
a constant temperature and the supply airflow is modulated to match the VAV
airflow rate with the zone cooling requirements.
Central Heat
Central Heat for Morning Warm-up—Many buildings cool down during the night. To
be at a comfortable temperature in the morning when the building is again
occupied, heat must be added to the spaces. Heat provided by the central air
handler for morning warm-up is supplied at constant air volume to the zones, prior
to the time of occupancy. During the morning warm-up period, the VAV terminal
units must open to allow heated air to flow into the zones. In most instances very
little additional heat is needed once the building is occupied.
Central Occupied Heating-Changeover—Some
buildings use the same air handler to provide both
occupied cooling and occupied heating. This is
commonly referred to as a changeover system. The
system changes between heating and cooling
depending on the need of the zones on the system.
In a changeover system, the operation of the VAV
terminal units must also change over, opening to
provide heat in the heating mode and opening to
provide cooling in the cooling mode. Trane's main
product in this type of application is called VariTrac .
VariTrane products can also be used in these
systems. (These types of systems are beyond the
scope of this manual and are discussed in detail in
the VariTrac II Manual, VAV-PRC003-EN.)
Terminal Heat
Remote Heat—In some zones of a single-duct VAV
system, perimeter heating equipment, remote from
the terminal unit, is used to add heat to the zone
EA
Single-Fan, Dual-Duct VAV System
OA
40˚F
(4.4˚C)
55˚F
(12.8˚C)
RA
75˚F
(23.9˚C)
when the cooling load is lower than the
minimum cooling capacity of the VAV
terminal unit. Heat is added directly to
the zone while cool supply air continues
to enter the zone at a minimum rate for
zone ventilation.
Terminal Reheat—In some zones of a
single-duct VAV system, a minimum
flow of cool supply air is reheated at the
terminal unit before entering the zone.
Terminal reheat can be provided by
electrical resistance heaters or by hot
water coils.
Parallel Fan-Powered Heat—In some
zones of a single-duct VAV system, cool
supply air at minimum flow is mixed
with warm plenum air before entering
the zone at a constant flow rate. A fan in
the terminal unit, in parallel with the
central fan, draws air from the plenum
whenever the zone requires heat.
Series Fan-Powered Heat—In some
zones of a single-duct VAV system, the
airflow to the zone is held constant,
during both heating and cooling, by a
terminal unit fan that is in series with the
central fan. The terminal unit fan runs
continuously. When the zone requires
heat, cool supply air at minimum flow is
mixed with warm, return plenum air
before entering the zone.
Dual-Duct Systems
Dual-duct systems have either one or
two supply fans and two duct systems.
One duct system carries heated air and
the other duct system carries cooled air.
Heated air and cooled air are modulated
and/or mixed at each zone in the proper
proportions to control zone temperature.
Terminal reheat is not required in a dualduct
system.
central air handler
supply
fan
VSD
heating
coil
cooling
coil
105˚F (40.6˚C)
dual-duct
VAV
terminal
units
AC 2
VAV-PRC008-EN

Application
Considerations
Systems
VariTrane VAV Terminal Units
The function of the VariTrane terminal
unit in a VAV control zone is to vary the
volumetric airflow rate to the zone.
VariTrane units are available with either
microprocessor-based DDC controls or
pneumatic or analog electronic controls.
Factory-installed controls are available
with all types of terminal units.
VariTrane VAV
Terminal Unit Types
Single-Duct
Single-duct terminal units control the
volumetric flow of supply air to the
space to maintain the zone temperature
at setpoint. These units are generally
applied in cooling-only VAV zones that
require no heat during occupied hours. If
local zone heat is necessary it can be
provided either remotely (for example,
perimeter heat) or by terminal reheat
(either electric or hot water coils).
Single-Duct Cooling Only Unit
Dual-Duct
Dual-duct terminal units are used in a
special type of air distribution system
where the main system has both warm
air and cold air separately ducted to
each terminal unit. The flow of both
warm air and cool air is modulated,
delivering air to the VAV zone at
variable air volumes as well as variable
temperatures. Since full capacity
occupied heating is always available,
control of additional local heat is
not provided.
Dual-Duct Terminal Unit
When no heat is needed, the local
parallel fan is off and a backdraft
damper on the fan’s discharge is closed
to prevent cool air entry into the return
plenum. When cool airflow to the VAV
zone is at a minimum and the zone
temperature drops below setpoint, the
local parallel fan is turned on and the
backdraft damper opens. A constant
volume of air is delivered to the zone
because the fan delivers a constant
volume of warm plenum air which is
mixed with cool primary air at a
minimum flow. Remote heat or
terminal reheat can provide additional
local heating.
Parallel Fan-Powered Unit with
Hot Water Coil
Single-Duct Unit with Hot Water Coil
Parallel Fan-Powered
Parallel fan-powered units are
commonly used in VAV zones which
require some degree of heat during
occupied hours—when the primary
supply air is cool. The terminal unit fan is
in parallel with the central unit fan; no
primary air from the central fan passes
through the terminal unit fan. The
terminal unit fan draws air from the
space return plenum.
Parallel Fan-Powered Unit
Cooling Only
Parallel Fan-Powered Unit with
Electric Coil
VAV-PRC008-EN AC 3

Application
Considerations
Systems
Series Fan-Powered
Series fan-powered terminal units are
used commonly in VAV zones that not
only require heat during occupied
hours, but also desire constant air
volume delivery. The terminal unit fan
is in series with the central fan. Primary
air from the central fan always passes
through the terminal unit fan.
The local series fan within the terminal
unit operates whenever the unit is in
the occupied mode. The volume of air
delivered to the VAV zone is constant,
but the temperature of the delivered air
varies. As the zone requires less
cooling, the primary air damper closes.
As the primary air damper closes, the
air mixture supplied to the zone
contains less cool air and more warm
plenum air. Remote heat or terminal
reheat can provide additional local
heating.
Series fan-powered terminal units are
also useful in low supply air
temperature systems, since the
terminal unit fan can be sized so that
warm plenum air is always mixed with
low temperature supply air. This raises
the supply air temperature to an
acceptable distribution level and
reduces condensation potential.
Series Fan-Powered Unit Cooling Only
Low-Height Fan-Powered
Low-height fan-powered terminal units
are a slightly modified version of a fanpowered
terminal unit. As its name
suggests, the low-height fan-powered
unit has a shorter height dimension to
accommodate applications where
ceiling space is limited. To reduce the
height, shorter terminal unit fans are
integrated into the standard height
series or parallel terminal unit. The
result is a unit with a maximum height
of 11.0"–11.5".
For low-height units with the smaller
fan sizes (sizes 08SQ and 09SQ), a
single low-profile fan is used. Lowheight
units with the largest fan size
(size 10SQ) use two low-profile fans.
Each fan operates off a separate motor.
The fans still remain in series or
parallel with the primary system
central fan. Low acoustic levels are
much more challenging in these low
ceiling space applications, due to the
reduced radiated ceiling pleunum
effect.
The operation of the low-height
terminal unit is exactly the same as
that of a series or parallel terminal unit,
as are the options for high-efficiency
ECMs, insulation options, etc. As with
the other fan-powered terminal units,
additional local heating can be
provided by remote heat or terminal
reheat.
Series Fan-Powered Unit with
Hot Water Coil
AC 4
VAV-PRC008-EN

Application
Considerations
Parallel vs.
Series
Fan-Powered versus Single-
Duct VAV Terminal Units
In many climates, fan-powered
systems are a lower operating cost
alternative than single-duct systems.
The energy inefficiencies inherent in
reheating cold primary air can be
eliminated with a key design
characteristic of fan-powered terminal
units, plenum air heating. Heating with
warmer plenum air allows for recovery
of heat from lighting and other heat
sources in the building.
Comparison of Parallel and
Series Models
Once it has been determined that a
fan-powered system is to be specified,
the designer must decide between
parallel and series configurations. Each
model carries its own characteristics of
delivered airflow, energy consumption,
and acoustics. For the end user, the
designer might consider three goals: a
comfortable and productive tenant
environment, acceptable installed cost,
and low operating costs.
Parallel and series fan-powered
terminal units offer specific advantages
for particular applications. The
following table compares the key
similarities and differences between
the models that the designer should
consider in performing an engineering
analysis.
Typical Application of
Parallel Units:
Parallel intermittent fan-powered
terminal units are very common in
perimeter zones or buildings where
loads vary during occupied hours.
Core zones, which maintain a more
constant cooling requirement, are
better suited for variable airflow
(single-duct) units. Typical jobs
combine parallel fan-powered units
(exterior) and single-duct units
(interior) to provide an efficient system
with lowest first cost. Although the
overall NC of parallel systems is lower
than an equivalent series system, the
intermittent fan is sometimes noticed
when energized. To minimize the
impact of this NC change, an ECM
(Electrically Commutated Motor) can
be used which has soft-start
technology.
Typical Application of
Series Units:
Applications requiring constant air
movement or blending utilize series
constant fan-powered terminal units.
Conference rooms, laboratories, and
lobbies are common applications.
Because the series fan also adds to the
system external static pressure, office
buildings take advantage of this design
feature and down size main air
handling equipment. Finally, series
terminals are used in low-temperature
air systems to temper cold primary air
with warm plenum air and deliver it to
the zone.
PRIMARY
AIR
AIR
VALVE
PLENUM
AIR
PRIMARY
AIR
AIR
VALVE
FAN
PLENUM
AIR
FAN
AIRFLOW
AIRFLOW
PARALLEL FAN-POWERED TERMINAL
SERIES FAN-POWERED TERMINAL
Parallel
Series
Fan Operation Intermittent operation during occupied Continuous operation during the
and unoccupied modes.
occupied modes. Intermittent operation
during unoccupied mode.
Operating Sequence Variable-volume, constant-temperature Constant-volume, variable-temperature
device during cooling. Constant-volume, device at all times. Delivers design
variable-temperature during heating.
airflow regardless of the load.
Fan Energization Based on zone temperature deviation Interlocked with central system fan to
from setpoint. No interlock with
deliver required air to the zone in both
central system fan required.
heating and cooling modes
Terminal Fan Fan runs during heating load. Size for Fan runs continually. Fan sizing should
Operating and Size design heating load. Typically this is 40 to meet the greater of design cooling or
60% of design primary cooling airflow. heating airflow to the zone.
Air valve Sizing Design cooling airflow. Design cooling airflow.
Minimum Inlet Static Sufficient to overcome unit, heating Sufficient to overcome air valve
Pressure Required for coil, downstream duct and diffuser pressure loss only.
Central Fan Sizing pressure losses.
Acoustics When operating under cooling loads Produces slightly higher background
the terminal fan does not run, offering
sound pressure levels in the occupied
superior acoustic performance similar to space. This sound level remains
single-duct VAV. Under heating loads, the constant and is less noticeable than
fan operates intermittently. Impact can be intermittent fan operation with PSC
minimized by use of a ECM.
motors.
VAV-PRC008-EN AC 5

Application
Considerations
Low-Temperature
Air
Low-Temperature Air System
Benefits of Low-Temperature Air
The benefits of low-temperature air
systems include reduced first cost,
reduced operating cost and increased
revenue potential. Since lowtemperature
air transports more
energy per cubic foot, smaller fans and
ducts can be used. An EarthWise
system takes that a step farther and
includes optimizing the waterside of
the HVAC system as well with low flow
rates through the chilled water and
condenser loops.
Since low-temperature water can
transport more thermal energy per
gallon, smaller pumps, pipes, and
valves can be used. Smaller HVAC
equipment consumes less energy so
both electrical demand and
consumption are lowered, reducing
operating costs. The amount of
revenue generated by a commercial
building is related to the amount and
quality of rental floor space. The
amount of rental floor space is
increased in a low-temperature air
system, since air handlers, riser ducts,
and equipment rooms are smaller.
Since smaller ducts reduce the
required ceiling plenum, additional
floors may be included without
increasing building height.
The concept of the EarthWise system
is to deliver superior comfort and be
less expensive to install and operate.
The method to do this involves both
waterside optimization and airside
optimization. The waterside is
optimized using techniques of low
water flow through the evaporator and
condenser of the chiller as well as
using chiller-tower optimization control
strategies. For more information on the
waterside of the EarthWise system,
contact your local Trane representative
or visit www.trane.com.
Low Temperature Air System Layout
Variable
Volume
Exhaust
Fan
Preheat
Coil
Cooling
Coil
Airside savings are obtained using a
combination of lower air temperature
and intelligent control strategies. The
ability of the VAV unit to communicate
information is vital to system
coordination.
System Operation
A low-temperature air system could be
done with chilled water or direct
expansion equipment. A chilled water
system includes a chiller plant, VAV air
handlers, and series or parallel fanpowered
VAV terminal units. The VAV
air handlers use cold water, typically
around 40°F (4.4°C), from the chiller
plant, to cool the supply air to 45–50°F
(7.2–10°C). The volume of supply air is
determined by the airflow needs of the
VAV terminal units. A direct-expansion
system would include a VAV air
handler or rooftop with series or
parallel fan-powered VAV terminal
units. The supply air would be cooled
to 48–52°F (8.9–11.1°C).
The VAV terminal units include a
parallel or series fan with the central air
handler or rooftop fan. The terminal
unit fan operates continuously, mixing
45-50°F (7.2–10°C) supply air with warm
plenum air, to provide 50–55°F
(10–12.8°C) cooling air to the occupied
space at design conditions. As the
cooling load in the space decreases,
the VAV terminal air valve closes to
reduce the flow of cold supply air and
increase the flow of warm plenum air
in the case of series terminal units. The
temperature of air supplied to the
space rises, but the volume flow rate to
the space is constant for the series
unit.
Variable Volume
Supply Fan
48˚
Heating Coil
Series or Parallel
Fan-powered Unit
55˚
Zone 1
Zone 2
Considerations for VAV products
To achieve the maximum benefit from
the low-temperature air system,
several VAV considerations must be
addressed.
Insulation
The units must be insulated to ensure
that no condensation occurs on the
units. How much insulation is needed?
Trane has tested its insulation with the
goal of developing a thermal
resistance ratio for each type of
insulation. The thermal resistance (TR)
ratio is discussed on page AC 16. The
TR ratio can be used, along with the
properties of the insulation and the
system operating conditions to
determine the necessary insulation
thickness required.
In the low-temperature air system with
fan-powered units, the ducts and
diffusers downstream from the
terminal unit handle air that is 55°F
(12.8°C) or warmer. Therefore,
condensation considerations are no
different from conventional systems.
Linear slot diffusers are recommended
to take advantage of the Coanda effect
described in the Diffusers section later
in the catalog.
Terminal unit surfaces that are
traditionally not insulated—electric and
hot water reheat coils and the primary
air inlet for example—should be
thoroughly field-insulated.
AC 6
VAV-PRC008-EN

Application
Considerations
Low-Temperature
Air
Leakage
The fan airflow plus the minimum downstream of the VAV terminal unit,
When the terminal unit fan is off, the primary airflow must be checked with the system designer will have some
air valve will close, and not leak. Ducts the minimum airflow of the diffusers to concerns related to condensation on
upstream of the terminal unit must insure that dumping doesn’t occur. If diffusers and other low-pressure
also be thoroughly insulated and
that is a concern, the minimum could ductwork accessories. For instance, if
constructed for very low leakage.
be adjusted up or the fan airflow could the occupied space must receive 1000
Duct and terminal unit insulation can be adjusted up.
cfm of 55°F (472 L/s at 12.8°C) air to
be internal or external. Keep in mind As the valve closes, the downstream
satisfy to design cooling load, 715 cfm
that internal insulation has hidden static pressure will decrease because
must be 45°F (337 L/s must be at 7.2°C)
thermal leaks at joints and seams. the pressure is related to the airflow.
supply air and 285 cfm must be 80°F
These areas must be located and
The fan will supply more air at the
(135 L/s must be 26.7°C) plenum air.
insulated externally to avoid
valve minimum condition than at
Therefore, the series fan-powered
condensation. External Insulation, on design due to the decreased static
terminal must be sized to have the air
the other hand, allows a complete, pressure. This should be a
valve deliver 715 cfm (337 L/s) of
uniform thermal seal.
consideration when calculating how
supply air at design conditions, but the
Minimum settings and IAQ
much airflow would occur at the
fan must be sized to deliver 1000 cfm
Indoor air quality is usually best when minimum valve plus fan airflow
(472 L/s).
a specific quantity of outside
condition. The new fan airflow would Airside System Factors
ventilation air reaches each building be found by looking at a fan curve at A couple of system related factors
occupant. Maintaining a minimum the new SP point. The new SP can should be noted as they apply to
ventilation rate is a challenge in any be calculated:
condensation. The first is the
VAV system because the amount of
Fan Airflow + Valve Minimum
supply air that reaches a particular (
Fan Airflow + Valve Design
) x SP = SP advantage the colder primary air has
1 2 from a humidity standpoint. As noted
space decreases as the cooling load
in the description above, the lowtemperature
system operates at space
decreases. To insure that a minimum The following table can be used to
amount of supply air reaches the space determine what percentage of the total relative humidity of 30–45% while a
at all times, a minimum flow setting on airflow should come from the fan to standard system operates at space
the terminal unit is used. In lowtemperature
air systems, when the (26.7°C) plenum air.
zone air means that the plenum air
temper the supply air, assuming 80°F relative humidity of 50–60%. The drier
space needs heating, this minimum
returning to the series terminal unit will
Percentage of Airflow from Fan
flow setting results in increased
also be drier and, therefore, less of a
Supply Air
heating load. Therefore, it is important Temp.
Primary Air Temperature (deg. F (C))
problem with
to include the additional load imposed (deg. F (C) 45 (7.2) 46 (7.8) 47 (8.3) 48 (8.8) 49 (9.4) 50 (10) condensation.
by the cold supply air when calculating 50 (0) 14% 12% 9% 6% 3% 0% The second
heating loads. Reheat may be required 51 (10.6) 17% 15% 12% 9% 6% 3% condensation factor to
since the ventilation values are
52 (11.1) 20% 18% 15% 13% 10% 7%
note is related to
absolute requirements and not
53 (11.7) 23% 21% 18% 16% 13% 10%
54 (12.2) 26% 24% 21% 19% 16% 13% systems that shut down
percentage of total airflow
55 (12.8) 29% 26% 24% 22% 19% 17% in the evening. Many
requirements.
people believe that
EarthWise or Low-Temperature Air If anything other than 80°F (26.7°C), immediately sending low-temperature
Distribution Design Considerations the following equation can be used to primary air to these boxes that have
with Parallel Fan-powered Terminal calculate the percentage:
been off for some time will cause a
Units
shock to the system and may cause
The parallel fan-powered unit needs to SupplyTemperature =
condensation problems at startup. The
(%*primarytemperature) + (1-%)*plenumtemperature
be set up to run continuously rather
solution to this has been the advent of
than intermittently. Since it is in
Low-Temperature Air Distribution
gradual pull-down or “soft start”
parallel, the airflow required by the fan Design Considerations with
systems. In this type of system, the
is less than a comparable series unit. Series Fan-powered Terminal
primary air temperature is higher on
This results in energy savings. Running Units
initial startup (typically 55°F(12.8°C))
the parallel fan continuously will take The VAV terminal unit includes a
and then gradually reduced to the
some minor control changes. It will, fan that operates continuously.
normal operating point over the next
however, create a better acoustical The series fan should be large
30 to 60 minutes.
installation.
enough to insure that the mixture
The parallel fan should be large
of cold supply air and warm
enough to temper the design cooling plenum air is 50–55°F (10–12.8°C)
airflow at 45–50°F to 50–55°F (7.2–10°C at design cooling flow conditions.
to 10–12.8°C). For instance, if the
In these types of systems, it is a
design cooling airflow is 1000 cfm at good design practice to develop
55°F (472 L/s at 12.8°C), you will need the system based upon 55°F
781 cfm of 48°F (368 L/s of 8.9°C)
(12.8°C) air being provided to the
supply air and 219 cfm of 80°F (103 L/s space from the fan-powered
of 26.7°C) plenum air. The parallel fan terminal unit. If a lower
can be sized for the 219 cfm (103 L/s) temperature air is used
rather than the total room airflow.
VAV-PRC008-EN AC 7

Application
Considerations
Energy Savings &
System Control
Electrically Commutated
Motor (ECM)
The ECM provides an additional
energy-saving option to the system
designer. Some of the advantages of
the motor include high efficiency, quiet
operation, short payback, and easy
installation. There are several
considerations that need to be
addressed when deciding whether to
use these motors or not. The primary
benefit may be seen as increased
efficiency.
Operating Hours—The added cost of
an ECM can be offset more quickly in
applications which require a relatively
high number of hours of operation.
However, if a space does not require
extensive running time for the unit fan,
then it may not be a good candidate
for this type of motor based solely on
payback. Therefore, the decision about
using the ECM may be based on other
benefits, depending on the needs of
the customer.
Airflow Flexibility—The ECM allows a
greater airflow range per fan size. If a
space is going to change uses and load
components frequently, the ability to
change supply airflow with the ECM
without changing units will be a
benefit.
Airflow Balancing—The ability of the
ECM motor to self-balance to an
airflow regardless of pressure can be
an asset when trying to air balance a
job. This will help eliminate additional
dampers or changes to downstream
ductwork to ensure proper airflow. For
more information, please contact your
local Trane sales engineer.
Fan-Pressure Optimization
With Trane's Integrated Comfort
System, the information from VAV
terminal units can be used for other
energy-saving strategies. Fan-pressure
optimization is the concept of reducing
the supply fan energy usage based on
the position of the terminal unit
dampers.
The control system allows this
scenario. The system polls the VAV
units for the damper position on each
unit. The supply fan is modulated until
the most wide-open damper is
between 85% and 95% open. The
correct airflow is still being sent to the
zones since the controls of the VAV
units are pressure-independent, and
the fan modulates to an optimal speed
and duct static pressure which results
in fan energy savings.
Ventilation Reset
The Ventilation Reset control strategy
enables a building ventilation system
to bring in an appropriate amount of
outdoor air per ASHRAE Standard
62.1. The basis for the strategy is
measuring airflow at each zone,
calculating current system ventilation
efficiency using the multiple-zone
system equations of the standard, and
communicating a new outdoor airflow
setpoint to the air handler.
This strategy continually monitors the
zone ventilation needs and system
outdoor air intake flow, minimizing the
amount of ventilation air and increasing
the energy efficiency of the system. This
insures that the right amount of air is
brought in at all times and that proper
ventilation can be documented. Trane
has integrated this control ability into
the VAV controls, air-handler controls,
and building controls.
For more detailed information on these
energy-saving strategies, please refer
to the “Additional References” section
on page AC 23 of the catalog for
appropriate material.
AC 8
VAV-PRC008-EN

Application
Considerations
Agency
Certifications
Agency Certifications
There are numerous regulations and
standards in the industry that determine
the construction and performance
parameters for VAV terminal units.
Some of the more important of those
standards and regulations are listed
below, along with a brief description of
what each one addresses.
American Society of Heating,
Refrigerating and Air-conditioning
Engineers (ASHRAE) - 41.1
ASHRAE - 41.2
ASHRAE - 41.3
These standards specify methods for
temperature measurement (41.1),
laboratory airflow measurement (41.2),
and pressure measurement (41.3). While
none of these standards specifically
discusses VAV air terminals, they
discuss topics that are aspects of
terminal box systems. Therefore, some
engineers will include these standards
in their specifications as a primer on
accepted measurement techniques.
ASHRAE - 62
This standard specifies the minimum
ventilation rates and indoor air quality
that are acceptable for occupied spaces.
ASHRAE - 111
This standard calls out procedures to be
followed for testing and balancing
HVAC systems. It includes descriptions
of the equipment used, procedures
followed, and field changes that must
be made when a system is balanced.
Air Conditioning and Refrigeration
Institute (ARI)
ARI 880 - 1998
This standard sets forth classifications,
performance testing requirements, and
test results reporting requirements for
air terminal units. The standard
contains very detailed procedures that
are to be followed for the testing and
certification program associated with
this standard. This is one of the most
commonly referenced standards in the
VAV terminal unit industry. The ARI-880
certification program is designed to
police the accuracy of documented
performance for terminal units. The
certification program requires a
sampling of at least four units be tested
annually. The tested units are chosen at
random by ARI and sent to an
independent laboratory for the testing.
The performance is tested at one
specific operating condition. The
operating characteristics tested include
discharge and radiated sound power
(for the damper and, in the case of fanpowered
boxes, the fan), wide-open
damper pressure drop, and fan motor
amp draw. VariTrane terminal units
are certified according to ARI-880.
ARI 885-98-02
This document provides a procedure
to estimate sound pressure levels in an
occupied space. The standard accounts
for the amount of sound pressure in
the space due to the VAV air terminal,
diffusers and their connecting low
pressure ductwork. While sound
generated from the central system fan
and ductwork may be a significant
factor in determining the sound
pressure level in the room, this
standard does not address those
factors. It focuses solely on the VAV
terminal and items downstream of it.
This standard is related to ARI-880 by
using sound power determined using
ARI-880 methodology as a starting
point for the ARI-885 procedure.
Underwriter’s Laboratory (UL) 1995
Underwriter’s Laboratory is an
independent testing agency that
examines products and determines if
those products meet safety
requirements. Equipment
manufacturers strive to meet UL
guidelines and obtain listing and
classifications for their products
because customers recognize UL
approval as a measure of a safely
designed product. VariTrane VAV air
terminals are listed per UL-1995,
Heating and Cooling Equipment.
The terminals are listed as an
entire assembly.
National Fire Protection Association
(NFPA) 70
This standard is also known as the
National Electrical Code (NEC). The
Code gives standards for installation of
wiring and electrical equipment for
most types of commercial and
residential buildings. It is often referred
to in VAV air terminal specifications
when fan-powered boxes, electric heat
or electric controls are included.
NFPA 90A
This standard does not speak directly
to VAV air terminals but does discuss
central system considerations
pertaining to a fire and/or smoke
condition. The standard discusses
safety requirements in design and
construction that should be followed to
keep the air-handling system from
spreading a fire or smoke. The
standard specifies practices that are
intended to stop fire and smoke from
spreading through a duct system, keep
the fire-resistive properties of certain
building structures (fire walls, etc.)
intact, and minimize fire ignition
sources and combustible materials.
VAV-PRC008-EN AC 9

Application
Considerations
Control
Types
Control Types
VAV terminal units are available with
many different options. These options
fall into three main categories of
controls: direct digital (DDC),
pneumatic, and analog electronic. All
of these control types can be used to
perform the same basic unit control
functions, yet differences exist in
accuracy of performance, versatility,
installed cost, operating cost, and
maintenance cost.
Direct digital control (DDC)
systems became available as
advances in computer technology
made small microprocessors
available and affordable. Much of the
hardware in DDC systems is similar
to analog electronic systems. The
primary difference is that DDC
controllers allow system integration,
remote monitoring, and adjustment.
The microprocessor is programmed
using software that gives the
controller a higher level of capability
than either the pneumatic or analog
electronic options.
Benefits:
Performance—DDC controls offer PI
control capability. A PI control
scheme is the most accurate and
repeatable control scheme available
in the VAV terminal unit industry.
Versatility—DDC controls accepts
software commands to determine
how its outputs will be controlled.
When a control sequence must be
modified, making changes to the
software instructions is easier and
quicker than changing hardware.
Operating and Maintenance Costs—
DDC controls can be networked
together to provide system-control
strategies for energy savings.
Multiple controllers can be easily
monitored and adjusted from a
remote location. DDC controls also
have system and individual
diagnostic capability.
Disadvantages:
Versatility—The communications
protocol between controllers will be
different from one controller
manufacturer to another.
Installed Cost—DDC controls are the
most expensive of the three control
types.
Operating and Maintenance Costs—
Building personnel must be trained to
operate and maintain the system.
Analog electronic control systems
began to be used in the 1970s and
1980s. Cost effective and reliable
transistors, resistors, relays, and triacs
(electronic relays) allowed analog
electronics to become a substitute for
pneumatic controls. Analog electronic
controls use varying voltage signals to
change an output in response to a
monitored variable.
Benefits:
Performance—Analog electronic
controls are a basic technology that
has good repeatability.
Operating and Maintenance Costs—
Analog electronics have minimal drift
and therefore require much less
recalibration than pneumatics.
Ease of Use—Analog electronic
controls can be modified using tools as
basic as a screwdriver and a voltmeter.
Knowledge and availability of a
personal computer is not required.
Disadvantages:
Performance—Analog electronics
provide proportional-only control for
VAV terminal unit systems. This control
scheme is less accurate than the more
advanced control schemes.
Installed Cost—Analog electronics
have a higher installed cost than
pneumatic controls for systems with
basic functions.
Operating and Maintenance Costs—
Diagnostic capability for analog
electronics is not available.
Pneumatic control systems use
compressed air through simple
mechanical control devices, such as
diaphragms, springs, and levers to
change an output in response to a
change in a monitored variable. With
VAV terminal units, the output is
typically a primary airflow and the
monitored variable is zone temperature.
Benefits:
Performance—Pneumatic controls are a
proven technology that is effective and
has a long life cycle.
Installed Cost—When a source of
compressed air exists at the facility,
pneumatics generally have a lower
installed cost than other types of
controls when only a basic functionality
is required.
Operating and Maintenance Costs—
Pneumatics are still the most familiar
control technology to many building
designers and maintenance people.
Large Installed Base—Pneumatic
systems are very common in existing
buildings. This eliminates the need to
purchase the most expensive piece of
equipment in a pneumatic control
system—the control air compressor.
Extensions to existing pneumatic
systems are generally very simple and
extremely cost-effective.
Disadvantages:
Performance—Pneumatic controls
provide proportional-only control for
VAV terminal unit systems. This control
scheme is less accurate than the more
advanced control schemes. Improper
calibration of pneumatic controls leads
to poor energy utilization.
Versatility—A central pneumatic control
system, where each of the control zones
can be monitored and adjusted from a
remote location, is extremely costly to
configure and to modify.
Operating and Maintenance Costs—
Pneumatics easily drift and require
constant upkeep and scheduled
maintenance. Diagnostic capability for
pneumatics is not available. A main
compressor which is not maintained
and becomes contaminated with oil or
water can pump those contaminants
into the compressed-air-distribution
system. This may require costly cleaning
of the system and a possible
replacement of system components.
AC 10
VAV-PRC008-EN

Application
Considerations
Control
Types
DDC Controls Basic Information
DDC controls have become the
industry standard for VAV terminal unit
control systems. DDC systems use
electronic field devices such as a flow
transducer, a primary air modulating
damper, and an electronic thermostat.
These field devices report software
instructions of how the outputs are
positioned in relation to the inputs to a
controller. The VariTrane system uses a
primary air valve and flow transducer
for both DDC systems and analog
electronic systems. However, the DDC
zone sensor is different from the
analog electronic thermostat.
DDC controls provide much flexibility
and considerable diagnostic capability.
DDC controllers can be connected
together to form a network of
controllers. Once the controllers are
networked, they can be monitored for
proper operation from a remote
location. Commands and overrides can
be sent for groups of controllers at one
time to make system-wide changes.
Commands and overrides can be sent
to individual units to allow problem
diagnosis, temporary shutdown,
startup schedules or other specialized
changes. When integrated into a
building management system, the
operation of the VAV terminal unit
system can be modified to do such
things, as coincide with occupancy
schedules and reduce energy charges.
DDC control of VAV terminal units is a
key element in providing intelligent
and responsive building management.
Precision control, flexible comfort, and
after hours access are all available with
the VariTrane DDC control system for
VAV terminal units.
Key features of the system include:
• An advanced unit controller
• Flexible system design
• User-friendly interaction
Analog Electronic Controls Basic
Information
Analog electronic controls continue to
be useful in specific applications. The
users of analog electronic controls can
benefit from the analog electronic
product without the necessary air
compressor capacity for pneumatic
applications or computer-literate
personnel for DDC applications.
However, as more and more people
become computer literate, DDC
controls have become the standard for
non-pneumatic VAV terminal unit
controls. The analog electronic control
system will control room temperature
by modulating the position of the
electronic air valve in response to zone
temperature changes. VariTrane analog
electronic controls are only available in
pressure-independent operation.
Therefore, the flow is proportional to
the deviation from the zone setpoint.
The primary airflow through the air
valve is monitored by means of an
electronic pressure transducer
connected to the standard VariTrane
flow ring. The thermostat used with
the VariTrane electronic control system
is a thermistor which completes a
voltage divider circuit when wired back
to the analog control board. The
thermostat is designed to operate
specifically with VariTrane analog
electronic controls and is not
interchangeable with the VariTrane DDC
zone sensor.
Pneumatic Controls Basic Information
Pneumatic controls modulate air
pressure of a controller to maintain
setpoint. For VAV systems, there are
two primary types of pneumatic
controllers—the room thermostat and
the pneumatic volume regulator (PVR).
Room Thermostats
The most visible controller to the
customer is the room thermostat.
Pneumatic room thermostats can be
classified by two characteristics: the
tubing connection(s) to the thermostat
and the action of the thermostat output
in response to a change in the input.
Room thermostats are available in
models that require a one-pipe or a
two-pipe configuration. The name is
derived from the number of tubes that
must run to the thermostat location.
The difference is really in the
construction of the thermostats. The
two-pipe thermostats have a constant
pressure supply connected via an air
tube to the thermostat supply air port.
The supply air travels through the
thermostat’s relays, levers, diaphragm,
and bleed port to produce an output.
The output line is connected to the
output port of the thermostat and
extends to the controlled device. The
one-pipe thermostat has, as its name
suggests, only one air line connection.
The thermostat works by opening and
closing an air bleed valve. This will
either decrease or increase the
pressure on the controlled device,
which is connected to the same line
that runs to the thermostat.
Room thermostats also can be
classified by their reaction to a change
in temperature. Room thermostats
classified this way are denoted as
either direct-acting or reverse-acting.
Direct-acting thermostats will increase
their output pressure as the
temperature the thermostat measures
increases.
Direct-Acting Thermostat Response
Output Pressure
Input Temperature
On the contrary, reverse-acting
thermostats will decrease their output
pressure as the temperature the
thermostat measures increases.
Reverse-Acting Thermostat Response
Output Pressure
Input Temperature
VAV-PRC008-EN AC 11

Application
Considerations
Control
Types
Pneumatic Volume Regulators
These controllers accept the room
thermostat signal and modulate the
VAV terminal unit primary air damper.
The primary air damper is controlled
for an airflow setpoint that is
determined by the room thermostat.
The thermostat increases the PVR’s
airflow setting when the temperature
in the space is warm. On the other
hand, the thermostat decreases the
PVR’s airflow setting when the
temperature in the space is cold.
Currently, VariTrane offers two models
of pneumatic volume regulators in its
controls offering—the 3011 regulator
(used in most applications) and the
3501 model (used in dual-duct
constant- volume applications). The
primary difference is the 3501 PVR’s
ability to change the velocity pressure
linearly with a change in thermostat
pressure, which results in improved
stability at low flows. In contrast, the
3011 PVR resets the velocity pressure
with a change in thermostat pressure.
Reset Control of Minimum and
Maximum Flow—The 3011 PVR and
3501 use fixed reset control of
minimum and maximum flow settings.
The primary benefit of fixed reset in a
pneumatic volume regulator is stable
flow control without excessive damper
movement.
Fixed Reset—A fixed reset controller
operates over a thermostat signal
change of 5 psi between minimum and
maximum flow, regardless of the
differential pressure flow sensor signal.
The thermostat is usually set for a gain
of 2.5; i.e. it produces a 2.5 psi output
change per degree of space
temperature change. This control
strategy provides stable flow control
with the primary air valve throttling
between minimum and maximum
flow over a 2°F space temperature
change.
Example 1: Air valve with a 6" inlet,
Pneumatic thermostat gain = 2.5 psi/
degree:
Minimum Flow = 0 cfm, 0.0 in. wg
flow signal
Maximum Flow = 680 cfm, 2.0 in. wg
flow signal
2.0 in. wg signal range
The damper will modulate from zero to
maximum position over a 2°F
temperature change.
Bleed Port to Atmosphere—
Bleeding air to the atmosphere is a
normal operation for a volume
regulator. The 3011 volume regulator
addresses this function with a
dedicated bleed port. When air is bled
through the flow sensor, the differential
pressure signal from the sensor is
affected. As a result, the flow sensor
signal can be radically altered if the
volume regulator is bleeding air, and
may cause excessive damper
movement.
Calibration—The minimum and
maximum settings are independent of
each other and need to be set only
once during calibration.
Signal Configuration Flexibility—
Both can be configured to work with
both normally-open and normallyclosed
pneumatic air valves, and both
direct-acting and reverse-acting
thermostats.
Pneumatic Volume
Regulators
PVR 3011
PVR 3501
AC 12
VAV-PRC008-EN

Application
Considerations
Flow
Measurement
and Control
Flow Measurement and
Control
One of the most important
characteristics of a VAV terminal unit is
its ability to accurately sense and
control airflow. The VariTrane terminal
unit was developed with exactly that
goal in mind. The patented, multiplepoint,
averaging flow ring measures
the velocity of the air at the unit
primary air inlet. The differential
pressure signal output of the flow ring
provides the terminal unit controller a
measurement of the primary airflow
through the inlet. The terminal unit
controller then opens or closes the
inlet damper to maintain the controller
airflow setpoint
Flow Ring
Flow Measurement
Most VAV terminal units contain a
differential pressure airflow
measurement device, mounted at the
primary air inlet, to provide a signal to
the terminal unit controller. Numerous
names exist for the differential
pressure measurement device—flow
sensor, flow bar, flow ring. The
differential pressure measured at the
inlet varies according to the volumetric
flow rate of primary air entering
the inlet.
perpendicular to the airflow. The lowpressure
taps on the VariTrane flow
ring measure a pressure that is parallel
to the direction of flow but in the
opposite direction of the flow. This
“wake pressure” that the downstream
ring measures is lower than the actual
duct static pressure. The difference
between the “wake pressure” and the
static pressure can be accounted for so
that the above relationship between
flow and differential pressure remain
valid. The difference also helps create a
larger pressure differential than the
velocity pressure. Since the pressures
being measured in VAV terminal box
applications are small, this larger
differential allows transducers and
controllers to measure and control at
lower flow settings than would
otherwise be possible.
The average velocity of air traveling
through the inlet is expressed in
the equation:
FPM = 1096.5√ VP
DENS
Where:
FPM = Velocity of air in feet per
minute
1096.5 = A constant
VP
= The velocity pressure of the
air expressed in inches of
water
DENS = The density of the air
expressed in pounds per
cubic foot
Often, the density is assumed to be a
constant for dry air at standard
conditions (68°F (20°C)) and sea level
pressure of 14.7 psi (101.4 kPa)). These
conditions yield the following
commonly used equation:
FPM = 4005√ VP
The velocity pressure is defined as the
difference between the total pressure
in the duct and the static pressure in
the duct:
VP = TP - SP (All units are expressed in
inches of water)
The amount of air traveling through
the inlet is related to the area of the
inlet and the velocity of the air:
AIRFLOW = AREA (square feet) x
AVERAGE VELOCITY (feet per minute)
Accuracy
The multiple, evenly spaced orifices in
the flow ring of the VariTrane terminal
unit provide quality measurement
accuracy even if ductwork turns or
variations are present before the unit
inlet. For the most accurate readings, a
minimum of 1½ diameters, and
preferably 3 diameters, of straight-run
ductwork is recommended prior to the
inlet connection. The straight-run
ductwork should be of the same
diameter as the air valve inlet
connection. If these recommendations
are followed, and the air density effects
mentioned below are addressed, the
flow ring will measure primary airflow
within ±5% of unit nominal airflow.
Air Density Effects
Changes in air density due to the
conditions listed below sometimes
create situations where the standard
flow sensing calibration parameters
must be modified. These factors must
be accounted for to achieve accuracy
with the flow sensing ring. Designers,
installers, and air balancers should be
aware of these factors and know of the
necessary adjustments to correct for
them.
The total pressure and the static
pressure are measurable quantities. Air Pressure Measurement Orientations
The flow measurement device in a VAV
terminal unit is designed to measure
velocity pressure. Most flow sensors
consist of a hollow piece of tubing with
orifices in it. The VariTrane air valve
contains a flow ring as its flow
measuring device. The flow ring is two
Air Flow
round coils of tubing. Evenly spaced
orifices in the upstream coil are the
high-pressure taps that average the
total pressure of air flowing through
the air valve. The orifices in the
Total
“Wake”
downstream ring are low-pressure taps
Pressure
Pressure
Static
that average the air pressure in the
wake of flow around the tube. By
Pressure
definition, the measurement of static
pressure is to occur at a point
VAV-PRC008-EN AC 13

Application
Considerations
Flow
Measurement
and Control
Elevation—At high elevations the air is
less dense. Therefore, when measuring
the same differential pressure at
elevation versus sea level the actual
flow will be greater at elevation than it
would be at sea level. To calculate the
density at an elevation other than
standard conditions (most
manufacturers choose sea level as the
point for their standard conditions),
you must set up a ratio between the
density and differential pressure at
standard conditions and the density
and differential pressure at the
new elevation.
∆P Standard Conditions ∆P New Conditions
=
DENS Standard Conditions DENS New Conditions
Since the data from the manufacturer
is published at standard conditions,
this equation should be solved for the
differential pressure at standard
conditions and the other quantities
substituted to determine the ratio for
the differential pressure measured at
the new conditions.
Duct Pressure and Air Temperature
Variations—While changes in these
factors certainly affect the density of
air, most operating parameters which
VAV systems need keep these effects
very small. The impact on accuracy due
to these changes is less than one half
of one percent except in very extreme
conditions (extreme conditions are
defined as those systems with static
pressures greater than 5 in. wg
(1245 Pa) and primary air temperatures
greater than 100°F (37.8°C)). Since
those types of systems occur so
infrequently, we assume the effects of
duct pressure and air temperature
variations to be negligible.
Linearity —With the increase in DDC
controls over pneumatic controls, the
issue of linearity is not as great as it
once was. The important aspect of flow
measurement versus valve position is
the accuracy of the controller in
determining and controlling the flow.
Our units are tested for linearity and
that position versus airflow curve is
downloaded and commissioned in the
factory to insure proper control of
the unit.
AC 14
VAV-PRC008-EN

Application
Considerations
Reheat
Options
Hot Water Reheat
Hot Water Coil
Hot water heating coils are generally
applied on VAV terminal units as reheat
devices. When applying these coils it is
important to make sure that they are
operating in the proper air flow and
water flow range. Either a two-way or a
three-way valve controls the coils.
Hot Water Valves
The most important factor when sizing
valves is the coefficient of velocity or
C V
. The C V
is defined as the flow rate, in
gallons of 60°F (15.56°C) water, that will
pass through the valve in one minute
with a one pound pressure drop. The
coefficient of velocity, which is
commonly called the flow coefficient,
is an industry standard rating. Valves
having the same flow coefficient rating,
regardless of manufacturer, will have
the same waterside performance
characteristics.
The equation that governs valve
sizing is:
C v
=
GPM
√∆P
Where:
C V
= Flow coefficient
GPM = The maximum water flow rate
through the valve in gallons
per minute
∆ P = The maximum allowable
differential pressure across
the valve in psi
The flow and differential pressure are
generally the known quantities. The
equation is solved for the flow
coefficient. The flow coefficient is then
compared to the published C V
values
for the control valves that are available.
The control valve with the C V
that is the
closest, but greater than, the calculated
flow coefficient is the correct choice for
the control valve. This choice will keep
the valve pressure drop below the
maximum allowable valve pressure
drop. The valve pressure drop should
then be checked against the coil
pressure drop. If the coil pressure drop
is appreciably larger than the valve
pressure drop, a valve with a smaller
C V
should be selected to produce a
larger control valve pressure drop. If
this new valve has a pressure drop that
is much larger than the maximum
allowable pressure drop for valves, the
system designer should be consulted
to make sure that the system hot water
pumps can deliver the water at the
new conditions.
Electric Reheat
Electric heating coils are applied on
VAV terminal units as terminal reheat
devices. Electric heat coil capacity is
rated in kilowatts (kW). Coils are
available with the total capacity divided
into one, two, or three stages.
Electric heat coils are available in
single-phase or three-phase models.
This refers to the type of power source
connected to the coil. Single-phase
models have resistance elements
internally connected in parallel. Threephase
models have resistance
elements internally connected in a
delta or a wye configuration.
The current draw for the electric coil
will depend upon whether it is a singlephase
coil or a three-phase coil. The
current draw is necessary for
determining what size wire should be
used to power the electric coils and
how big the primary power fusing
should be.
The equations for current draw for
these coils are:
1 φ amps =
3 φ amps = kW x 1000
Primary Voltage x √ 3
VariTrane three-phase electric heat is
available in balanced configurations.
For example, a 9 kW three-phase coil,
each stage would carry 1/3 or 3 kW of
the load.
It is important to note that these coils
have certain minimum airflow rates for
each amount of kW heat the coil can
supply to operate safely. These airflow
values are based upon a maximum
rise across the electric heat coil of
50°F (28°C).
The equation that relates the airflow
across an electric coil to the
temperature rise and the coil change in
temperature is:
CFM =
kW x 1000
Primary Voltage
kW x 3145
∆T
Where:
CFM = Minimum airflow rate across
the coil
kW = The heating capacity of the
electric coil
3145 = A constant
∆T
= The maximum rise in air
temperature across the coil
(usually 50°F (28°C))
Electric heat coils are available with
magnetic or mercury contactors.
Magnetic contactors are less
expensive than mercury contactors.
However, mercury contactors can be
cycled at a more rapid rate without
failing. Mercury contactors are rated
for heavier duty use and should be
used in as many applications as
possible. For pneumatic applications
the electric coils are available with
factory-installed pressure-electric
switches.
VAV-PRC008-EN AC 15

Application
Considerations
Insulation
Insulation
Insulation in a VAV terminal unit is
used to avoid condensation on the
outside of the unit, to reduce the heat
transfer from the cold primary air
entering the unit, and to reduce the
unit noise. The VariTrane line offers four
types of unit insulation. The type of
facing classifies the types of insulation.
To enhance IAQ effectiveness, edges of
all insulation types have metal
encapsulated edges.
Encapsulated Edges
Matte-Faced
This type of insulation is used for
typical applications. It consists of a
fiberglass core covered by a highdensity
skin. The dual-density
construction provides good sound
attenuation and thermal performance.
Foil-Faced
This type of insulation is used in
applications where there is some
concern regarding airborne
contaminants entering the space, or
dirt being trapped in the fibers of the
insulation. The insulation is composed
of a fiberglass core laminated to a foil
sheet. Foil-faced insulation will provide
the same sound attenuation
performance as matte-faced insulation.
Double-Wall
This type of insulation is used in
applications where there is extreme
concern regarding airborne
contaminants entering the space or dirt
being trapped in the fibers of the
insulation. The insulation is the same
as the matte-faced insulation.
However, after the insulation is
installed, a second solid wall of
26-gage steel covers the insulation. All
wire penetrations of this insulation are
covered by a grommet. This type of
insulation will result in higher
discharge and radiated sound power.
Closed-Cell
This type of insulation is used in
applications where IAQ and fibers are
of primary concern. The acoustics of
the closed-cell insulation are similar to
double-wall insulation. The thermal
properties are similar to fiberglass
insulation. This insulation contains
no fiberglass.
AC 16
VAV-PRC008-EN

Application
Considerations
Acoustics
Acoustical best practices:
Acoustics with terminal units is
sometimes more confusing than it
needs to be. As we know, lower
velocities within a unit leads to
improved acoustical performance.
Additionally, if the VAV terminal unit
has a fan, a lower RPM provides better
Acoustics performance. It is as simple
as that—there are some catches,
however.
We know that lower velocities and
lower RPMs in VAV terminal units
result in improved acoustical
performance. Additional
considerations will be discussed in
more detail throughout this portion of
Application Considerations that pertain
to unit size and type, appurtenance
affects (due to insulation, attenuation,
etc.) certification, and computer
modeling. Let’s take a look at the first
consideration, sizing of units.
Sizing of units
Before blindly increasing the size of
units, we must first understand what is
setting the acoustics within the space.
In general, over 95% of acoustics in
VAV terminal units, which set the
sound pressure levels and ultimately
the NC within the space, is from
radiated sound. This is readily known
for fan-powered units, but less
commonly known for single- and dualduct
units. Radiated sound emanates
from the unit and enters the occupied
space via means other than through
the supply ductwork. The most typical
path is through the plenum space, then
through the ceiling, then into the
occupied space. While discharge
sound should never be ignored,
radiated sound is the most dominant
and usually the most critical sound
source.
When increasing air valve sizes, BE
CAREFUL. Oversizing an air valve can
adversely impact the ability to
modulate and properly control
temperature in the space. In extremely
oversized situations, the air valve will
operate like a two-position controlled
device, with air either being “on”, or
“off”, and not really much in between.
The best way to avoid this is to
understand that the minimum for most
air valves is 300 FPM. This is a function
of the flow sensing device (see wake
pressures pp. AC 13) and the ability of
the pressure transducer and controller
to properly read and report flow. This
is not manufacturer specific, as physics
applies to all. Therefore, when sizing
air valves, regardless of the max
cooling velocity the minimum velocity
for proper pressure independent flow
is 300 FPM.
Modulation capability and range is
vital for proper operation of VAV
systems. With grossly oversized units,
the unit will act as a constant volume
system eliminating the energy saving
and individual zone control advantages
of VAV systems. A good rule of thumb
is to size cooling airflow for around
2000 FPM. VAV systems only operate
at full flow when there is a maximum
call for cooling in the zone. The
greatest portion of the time, an air
valve will be operating at partial flows.
When sizing fan-powered units, the fan
airflow range can be determined by
looking at the fan-curve. Because
parallel and series fan-powered units
operate at a constant fan flow,
selections can be made all the way to
the lowest flow ranges of the fan
curve. A good balance of performance
and cost is to select fans at 70-80% of
maximum fan flow.
Series vs. Parallel Fan-Powered Units
Acoustical considerations affect
whether a series or parallel fanpowered
terminal unit is selected. Both
units have their advantages.
The parallel unit has the advantage of
the fan being on and contributing to
the sound levels only when heating is
needed. The fans are usually smaller
because they are sized for 30–60% of
total unit flow. This creates a unit which
is quieter than series units. The
disadvantage of the parallel unit is that
the sound is intermittent. This impact
can be minimized by using an ECM,
which has slow fan ramp-up speed.
The primary acoustic benefit to the
series fan-powered unit is that the fan
runs continuously. Sometimes the unit
can be selected at slightly higher
sound levels due to the constant
nature of the sound.
The primary acoustic disadvantage the
series unit has compared to the parallel
unit is the need to size the unit fan for
the total room airflow. Series units
require a larger, louder fan than
parallel configurations.
Note: Operating parallel units with a
continuously operating fan may be
considered for some applications. This
provides the quietest overall fanpowered
system with the benefit of
continuous fan operation.
Insulation types
Insulation is a factor to consider when
dealing with the acoustics of terminal
units. Most insulation types will provide
similar acoustical results, but there are
exceptions. Double-wall and closed-cell
foam insulation will generally increase
your sound levels because of the
increased reflective surface area that the
solid inner-wall and closed-cell
construction provides. This increase in
sound will have to be balanced with the
IAQ and cleanability considerations of the
dual-wall and closed-cell construction.
Placement of units
Unit placement in a building can have a
significant impact on the acceptable
sound levels. Locating units above noncritical
spaces (hallways, closets, and
storerooms) will help to contain radiated
sound from entering the critical occupied
zones.
Unit Attenuation
Terminal unit-installed attenuators are an
option available to provide path sound
attenuation. Manufacturer-provided
attenuators on the discharge of a
terminal unit are targeted at reducing
discharge path noise and are typically a
simple lined piece of ductwork. It would
often be easier and less expensive to
design the downstream ductwork to be
slightly longer and require the installing
contractor to include lining in it.
Attenuators on the plenum inlet of fanpowered
terminals are targeted at
reducing radiated path noise since the
plenum opening on a fan-powered
terminal unit is typically the critical path
sound source. Significant reduction in
radiated path noise can result from a
well-designed inlet attenuator. The
attenuation from these attenuators is due
to simple absorption from the attenuator
lining and occupant line of sight sound
path obstruction. Therefore, longer
attenuators and attenuators that require
the sound to turn multiple corners before
reaching the occupied space provide
superior results, particularly in the lower
frequency bands.
Octave Band Frequencies
Octave Center Band Edge
Band Frequency Frequencies
1 63 44.6–88.5
2 125 88.5–177
3 250 177–354
4 500 354–707
5 1000 707–1414
6 2000 1414–2830
7 4000 2830–5650
8 8000 5650–11300
VAV-PRC008-EN AC 17

Application
Considerations
Acoustics
Attenuators that are simple “cups” at
the plenum inlet(s) have been shown
in Trane’s acoustical mock-up to
provide no measurable reduction in
sound pressure in the critical octave
bands which set the occupied space
noise criteria.
Certification and Testing
Terminal units should be submitted
based on the same criteria. There are
several ways to ensure this by
certification and testing.
Raw unit sound data can be good
measurement criteria for evaluation. In
using this as a basis for comparison,
the designer needs to make sure that
the information is based on the ARI
Standard 880 that gives the procedure
for testing.
Specifying NC or RC sound levels is a
possible comparison, but the designer
needs to be sure the comparison is fair.
Two options are to specify the
attenuation effect on which you would
like the units to be evaluated or to
specify that ARI Standard 885-98
transfer functions be used. The
importance of ARI Standard 885-98 is
that it is the first ARI Standard that
specifies exact transfer functions to be
used for evaluation. Previous versions
of the standard gave guidelines, but
the manufacturers could choose their
own set of factors.
By using NC sound levels, it is possible
to express acceptable sound levels for
various types of buildings or
environments. A few examples are:
Concert Hall NC-22
Hospital Room NC-30
School Room NC-35
General Office NC-40
Cafeteria NC-45
Factory NC-65
Path Attenuation
Sound is generated by a terminal unit
can reach the occupied space along
several paths. The terminal unit
generated sound will lose energy—i.e.,
the energy is absorbed by path
obstacles—as it travels to the occupied
space. This acoustical energy
dissipation as it travels to the occupied
space is called path attenuation. The
amount of energy lost along a
particular path can be quantified and
predicted using the procedure outlined
in ARI-885. Each path must be
considered when determining
acceptable sound power generated by
a terminal unit.
The term “transfer function” is often
used to describe the entire path
attenuation value for each octave band
(i.e., the sum of all components of a
particular path).
Examples of path attenuation include
locating the terminal unit away from
the occupied space, increasing the STC
(sound transmission classification) of
the ceiling tile used, internally lining
ductwork, drywall lagging the ceiling
tiles or enclosing the terminal unit in
drywall. All of these choices have costs
associated with them that must be
weighed against the benefits. Some of
these alternatives can be acoustically
evaluated from application data
provided in ARI-885. Others may
require professional analysis from an
acoustical consultant.
Computer Modeling
Computer modeling of acoustical
paths is available to help estimate
sound levels and determine problem
sources. The software used by Trane for
computer modeling is called Trane
Acoustics Program ( TAP).
TAP can analyze different room
configurations and materials to quickly
determine the estimated total sound
levels (radiated and discharged) in a
space.
The Trane Official Product Selection
System (TOPSS) can also be used to
determine sound levels of terminal
units. You can base selections on a
maximum sound level and enter your
own attenuation factors (defaults
based on ARI-885 are also available).
Other Resources
Please refer to "Additional References"
(page 29) of the Applications section to
see a list of publications to help with
the basics of acoustical theory and
modeling. You can also contact your
local Trane salesperson to discuss
the issue.
AC 18
VAV-PRC008-EN

Application
Considerations
Duct Design
Duct Design
Designing cost-effective VAV duct
systems is challenging. Some duct
design methods result in better
pressure balance than others do. Duct
shape and duct material can influence
duct system design and cost. In
addition, duct layout is properly
designed for optimal duct installation
and operation.
Design Methods
The two most widely used supply duct
design methods—equal friction and
static regain—are discussed below.
Equal Friction – Using this method,
ducts are sized at design flow to have
roughly the same static pressure drop
for every 100 feet of duct. Static
pressures throughout the duct system
can be balanced at design flow using
balancing dampers, but are no longer
balanced at part load flows. For this
reason, equal friction duct designs are
better suited for constant volume
systems than for VAV systems. If the
equal friction method is used for the
VAV supply duct design, the terminal
units usually require pressureindependent
(PI) control capability to
avoid excessive flow rates when duct
pressures are high.
In VAV systems, the ducts located
downstream of the terminal unit are
usually sized for equal friction. The
advantage of this design method is its
simplicity. Often, calculations can be
made using simple tables and duct
calculators. Drawbacks include
increased higher total pressure drops
and higher operating costs.
Static Regain – In the static regain
method, ducts are sized to maintain
constant static pressure in each
section, which is achieved by balancing
the total and velocity pressure drops of
each section. In other words, static
pressure is “regained” by the loss of
velocity pressure. Since the static
pressures throughout the duct system
are roughly balanced at design and
part load flow, static regain duct
designs can be used successfully for
either constant volume or VAV
systems. When the static regain
method is used for VAV systems, the
system is roughly pressure balanced
at design.
Advantages of the static regain method
include reduced total pressure drops,
lower operating costs, and balanced
pressures over a wide range of flows.
The drawback of this design is the
time-consuming, iterative calculation
procedure and for large systems, it is
essential to have a duct design
computer program.
Duct Design Program
Trane has developed a computer
program, VariTrane Duct Designer,
to aid in the duct design process. This
program is used to calculate duct sizes,
fitting sizes, terminal unit sizes, and
pressure drops according to the equal
friction or static regain method.
The duct design program can be easily
incorporated into the selection of VAV
terminal units. The inputs and outputs
for the program enable VariTrane units
to be selected based on the conditions
you require. This makes selecting and
scheduling units much easier. Contact
the local sales office or the Trane
C.D.S. department for more details
on this program.
VAV-PRC008-EN AC 19

Application
Considerations
Selection
Program
Selection Program
The advent of personal computers has
served to automate many processes
that were previously repetitive and
time-consuming. One of those tasks is
the proper scheduling, sizing, and
selection of VAV terminal units. Trane
has developed a computer program to
perform these tasks. The software is
called the Trane Official Product
Selection System (TOPSS).
The TOPSS program will take the input
specifications and output the properly
sized VariTrane VAV terminal unit along
with the specific performance for that
size unit.
With TOPSS, the user can integrate
selections of single-duct, dual-duct,
and fan-powered VAV boxes with other
Trane products allowing you to select
all your Trane equipment with one
software program.
The program has several required
fields, denoted by red shading in the
TOPSS screen, and many other
optional fields to meet the given
criteria. Required values for selections
include the maximum and minimum
airflows, the control type, and unit
model. When selecting models with
reheat, information regarding the
heating coil is needed for selection. In
addition, the user is given the option to
look at all the information for one
selection on one screen or as a
schedule with the other VAV units on
the job.
Also, TOPSS will calculate soundpower
data for a selected terminal unit.
The user can enter a maximum
individual sound level for each octave
band or a maximum NC value. The
program will calculate acoustical data
subject to default or user supplied
sound attenuation data.
The program has many time-saving
features such as:
• Copy/Paste from spreadsheets like
Microsoft ® Excel
• Easily arranged fields to match your
schedule
• Time-saving templates to store default
settings
• Several output report options including
schedules
The user can also export the Schedule
View to Excel to modify and put into a
CAD drawing as a schedule.
Specific details regarding the program, its operation, and how to obtain a copy of it
are available from your local Trane sales office.
Sample screen image from TOPSS Selection Program
VariTrane Quick Select
The VariTrane Quick Select is a tool used by consulting and contracting firms for
specifying and choosing VariTrane VAV terminal units. The tool has basic information
regarding dimensions, pressure drops, acoustics, electric and hot water reheat, and
fan data. For more information, please contact your local Trane sales office.
AC 20
VAV-PRC008-EN

Application
Considerations
Best
Practices
Common Mistakes
Some of the most common system or
installation errors are discussed below.
Reducers at Unit Inlet
This problem is a very common issue
that is seen in applications of VariTrane
products. It is often mistaken by those
in the field as an unacceptably large
static pressure drop through the unit. It
is also sometimes mistaken as a
malfunctioning flow ring, pressure
transducer (if DDC or analog electronic
controls are present) or PVR (if
pneumatic controls are present).
This problem is sometimes
unknowingly encountered because of
the capability of the VariTrane unit to
allow greater airflow for a specific size
duct than other terminal units. For
example, a project engineer specifies
an 8" (203 mm) round take off from the
main duct trunk to the VAV terminal
unit. The person supplying the VAV
terminal unit checks the required
airflow and finds that a VariTrane unit
with a 6" (152 mm) inlet will provide
the specified terminal unit
performance. The terminal unit
supplier submits, receives approval,
and orders the 6" (152 mm) inlet unit.
While this is happening, the installing
contractor has run the connecting duct
from the main trunk to the terminal
unit in the specified 8" (152 mm) round.
The unit arrives at the job site, and the
installer notices that the 8" (203 mm)
duct and the 6" (152 mm) terminal unit
inlet do not match. To get the unit
installed, an 8- to 6-inch reducer is
placed at the inlet to the terminal unit
air valve.
The reducer will cause a phenomenon
called flow separation at the unit inlet.
Fluid dynamics analysis can present a
detailed technical explanation of flow
separation, but the characteristics
important to this discussion are the
production of pressure loss and
turbulence. The reducer will have a
significant static pressure drop
associated with it since the air velocity
is increased (i.e., static pressure is
given up for increased velocity
pressure). The pressure loss is
sometimes mistaken as a loss due to
the function of the terminal unit. The
turbulence is at its greatest just
downstream of the reducer.
Unfortunately, this is the location of the
flow ring at the air-valve inlet. The
reducer will cause the flow ring to give
an inaccurate and inconsistent reading
because of the turbulent air.
The solutions to this situation are:
• Locate the reducer upstream of the
terminal unit at least three duct
diameters to eliminate flow separation
and turbulence at the unit inlet and to
improve the airflow measurement
accuracy.
• Consider proper sizing of the terminal
unit in the duct design and account for
the pressure loss of the reducer in the
central fan selection if a reducer is
required. Be cautious of “oversizing” a
VAV terminal. It is good practice to
make sure that the inlet duct velocity at
the minimum airflow setting is no
lower than 500 feet per minute.
Improper Use of Flexible Ductwork
While flexible ductwork has many
benefits, improper use can cause
numerous problems in a VAV system.
Flexible ductwork causes turbulent
airflow and relatively large static
pressure drops. Flexible ductwork at a
primary damper inlet (i.e., the flow
sensor location) may cause flow
accuracy and repeatability problems
due to turbulence. The use of flexible
ductwork should be primarily limited to
the downstream side of the terminal
units in a VAV system. Use of flexible
ductwork upstream of terminal units
should be kept to an absolute
minimum. All runs of flexible ductwork
should be kept as short as possible.
While most know these guidelines, the
ease of installation which flexible
ductwork provides is always an
enticement to push the limits of what
are acceptable practices.
Static Pressure Measurement Errors
Improper measurement techniques for
static pressure can lead many to
mistakenly believe that the terminal
unit is causing a large pressure drop in
the system. The chief error made here
is taking a static pressure
measurement in turbulent locations
such as flexible ductwork or near
transitions. This produces invalid static
pressure readings. Another error
commonly made is trying to read the
static pressure at the same point as the
flow sensing device. The inlets to VAV
terminal units produce turbulence and
will give poor readings. Flow sensors
with their multiple-point averaging
capability are best equipped to deal
with this type of flow, while a singlepoint
static probe is not. Another
common error is the incorrect
orientation of the static pressure probe.
The static pressure is correctly
measured when the probe is oriented
perpendicular to the direction of
airflow. The probe, or a part of it,
should never be facing the direction of
airflow, because the total pressure will
influence the reading of the probe.
VAV-PRC008-EN AC 21

Application
Considerations
Unit
Conversions
Conversions of Length and Area
To convert From To Multiply by
Length In. m 0.0254
Length Ft m 0.3048
Length m In. 39.3701
Length m Ft 3.28084
Area In. 2 m 2 0.00064516
Area Ft 2 m 2 0.092903
Area m 2 In. 2 1550
Area m 2 Ft 2 10.7639
Conversions of Velocity, Pressure, and Flow Rate
To convert From To Multiply by
Velocity Ft/min M/s 0.00508
Velocity M/s Ft/min 196.850
Pressure Psi Pa 6894.76
Pressure Ft of water Pa 2988.98
Pressure In. of water Pa 249.082
Pressure Pa Psi 0.000145038
Pressure Pa Ft of water 0.000334562
Pressure Pa In. of water 0.00401474
Flow Rate Cfm L/s 0.4719
Flow Rate Cfm m 3 /s 0.000471947
Flow Rate Gpm L/s 0.0630902
Flow Rate m 3 /s Cfm 2118.88
Flow Rate L/s Cfm 2.1191
Flow Rate L/s Gpm 15.8503
AC 22
VAV-PRC008-EN

Application
Considerations
Additional
References
VAV System and Product
References
VAV Systems Air Conditioning Clinic—
This clinic is designed to explain the
system components, the system
configurations, many of the VAV
system options and applications. A
great resource for VAV system
understanding.
Literature # TRG-TRC014-EN
Indoor Air Quality – A guide to
understanding ASHRAE Standard
62-2001—
The guide helps to explain the
ASHRAE Standard as well as the
fundamentals of good indoor air
quality. A great resource for
understanding the standard and
ways of designing VAV systems
around that standard.
Literature # ISS-APG001-EN
Managing Outdoor Air – Traq
Comfort Systems—
This brochure is a good, quick
reference of the issues of managing
outdoor air for a VAV system.
Literature # CLCH-S-26
Ventilation and Fan Pressure
Optimization for VAV Systems—
An engineering bulletin designed to
how a Trane Integrate Comfort
system can effectively control building
ventilation and supply fan pressure
for increased comfort and IAQ while
keeping energy costs to the lowest
possible.
Literature # SYS-EB-2
Trane DDC/VAV Systems Applications
Engineering Manual—
This manual gives detailed
descriptions of the Trane DDC/VAV
system. Topics include system
components, how the system interacts
and specific inputs and outputs of
the system.
Literature # ICS-AM-6
Acoustics in Air Conditioning
Applications Engineering Manual—
This manual describes the basic
fundamentals, behavior,
measurement, and control of sound, all
directed at the design of quiet systems.
Literature # FND-AM-5
VariTrac ® Catalog—
The catalog will help explain features
and benefits of VariTrac, how the
VariTrac product works, applications for
the product, and selection procedures.
Literature # VAV-PRC003-EN
ASHRAE Handbook of Fundamentals
ASHRAE Handbook of HVAC Systems
and Equipment
ASHRAE Handbook of HVAC
Applications
ASHRAE Handbook of Refrigeration
Web sites:
www.ashrae.org
www.ari.org
www.trane.com
VAV-PRC008-EN AC 23

Single-Duct
Table of
Contents
Service Model Number Description SD 2 – 3
Selection Procedure SD 4 – 5
General Data – Valve/Controller Airflow Guidelines SD 6
Performance Data – Air Pressure Requirements SD 7 – 9
Performance Data – Hot Water Coil SD 10 – 15
Performance Data – Electric Data SD 16 – 17
Performance Data – Acoustics SD 18 – 21
Dimensional Data SD 22 – 27
Mechanical Specifications SD 28 – 30
VAV-PRC008-EN
SD 1

Single-Duct VAV
Terminal Units
The features of the single-duct VAV
terminal units are described by the
product categories shown in bold.
Within each category the available
options are listed.
VCCF
VCWF
VCEF
Single-Duct
Digit 1, 2—Unit Type
VC VariTrane single-duct
Digit 3—Reheat
C Cooling Only
E Electric Heat
W Hot Water Heat
Digit 4—Development Sequence
F Sixth
Digit 5, 6—Primary Air Valve
04 4" inlet (225 cfm)
05 5" inlet (350 cfm)
06 6" inlet (500 cfm)
08 8" inlet (900 cfm)
10 10" inlet (1400 cfm)
12 12" inlet (2000 cfm)
14 14" inlet (3000 cfm)
16 16" inlet (4000 cfm)
24 24" x 16" inlet (8000 cfm)
Digit 7, 8—Not Used
00 N/A
Digit 9—Not Used
0 N/A
Digit 10, 11—Design Sequence
C0 Third (factory assigned)
Digit 12, 13, 14, 15—Controls
ENON No controls, field-installed DDC/
electric
PNON No controls, field-installed
pneumatic
DD00 Trane elec actuator only
DD01 DDC – Cooling only
DD02 DDC – N.C. on/off water valve
control
DD03 DDC – Prop hot water valve
control
DD04 DDC – On/off electric heat
DD05 DDC – Pulse-width modulation
electric heat
DD07 DDC – N.O. on/off water valve
control
DD11 LonTalk DDC Controller—
Cooling only
DD12 LonTalk DDC Controller w/ N.C.
on/off hot water control
DD13 LonTalk DDC Controller w/
proportional hot water control
DD14 LonTalk DDC Controller–on/off
electric heat control
Service
Model Number
Description
DD15 LonTalk DDC Controller w/
pulse-width modulation electric
heat control
DD17 LonTalk DDC Controller w/ N.O.
on/off hot water control
AT08 FM Automated Logic ZN341v+
AT10 FM Automated Logic ZN141v+
FM00 FM – Customer-supplied
actuator & controller
FM01 FM – Trane actuator w/
customer-supplied control
HNY2 FM Honeywell W7751H
INV3 FM Invensys MNL-V2R
PWR1 FM Siemens 540-100 w/
GDE131.1 actuator
PWR2 FM Siemens 540-103 w/
GDE131.1 actuator
PW12 FM Siemens 550-065
PW13 FM Siemens 550-067
VMA2 FM Johnson VMA-1420
EI05 Analog – With optional on/off
reheat
EI28 Analog – With optional on/off
reheat with dual-minimum cfm
EI29 Analog – With optional on/off
reheat with constant-volume cfm
PC00 PN – N.C. Trane pneumatic
actuator
PC04 PN – N.C. with optional on/off HW,
DA Stat
PC05 PN – N.C. with optional on/off
electric, RA Stat
PN00 PN – N.O. Trane pneumatic
actuator, RA Stat
PN04 PN – N.O. PVR, DA Stat
PN05 PN – N.O. PVR, RA Stat
PN11 PN – N.O. dual-minimum cfm,
DA Stat
PN32 PN – Water Valve, N.O. constant
volume, DA Stat
PN34 PN – Electric heat, N.O. constant
volume, DA Stat
Notes:
N.C. = Normally-closed
N.O. = Normally-opened
DA Stat = Direct-acting pneumatic t-stat (by
others)
RA Stat = Reverse-acting pneumatic
t-stat (by others)
PN =
FM =
PVR =
Pneumatic
Factory installation of customersupplied
controller
Pneumatic Volume Regulator
SD 2
VAV-PRC008-EN

Single-Duct
Service
Model Number
Description
Digit 16—Insulation
A 1/2" Matte-faced
B 1" Matte-faced
C 1/2" Foil-faced
D 1" Foil-faced
F 1" Double-wall
G 3/8" Closed-cell
Digit 17—Not Used
0 N/A
Digit 18—Not Used
0 N/A
Digit 19—Outlet Plenum (Connection
is Slip & Drive)
0 None
A 1 Outlet RH
B 1 Outlet END
C 1 Outlet LH
D 2 Outlets, 1 RH, 1 END
E 2 Outlets, 1 LH, 1 END
F 2 Outlets, 1 RH, 1 LH
H 3 Outlets, 1 LH, 1 RH, 1 END
J 4 Outlets, 1 LH, 1 RH, 2 END
Note: See unit drawings for outlet sizes/
damper information.
Digit 20—Not Used
0 N/A
Digit 21—Water Coil
0 None
1 1-Row
2 2-Row
Digit 22—Electrical Connections (VCCF,
VCWF can be flipped in the field to
achieve opposite-hand connection)
L Left (Airflow hitting you in the
R
face)
Right (Airflow hitting you in the
face)
0 Opposite side connection – coil
and control
Digit 23—Transformer
0 None
1 120/24 volt (50 VA)
2 208/24 volt (50 VA)
3 240/24 volt (50 VA)
4 277/24 volt (50 VA)
5 480/24 volt (50 VA)
6 347/24 Volt (50 VA)
7 575/24 Volt (50 VA)
8 380/24 Volt (50 VA)
Note: For VCEF units with transformers
the VA depends on the staging, control,
and contactor type (ranges are 40 VA
to 75 VA)
Digit 24—Disconnect Switch
0 None
W With
Note:
VCCF, VCWF – Toggle Disconnect
VCEF – Door Interlocking Power
Disconnect
Digit 25—Power Fuse
0 None
W With
Digit 26—Electric Heat Voltage
0 None
A 208/60/1
B 208/60/3
C 240/60/1
D 277/60/1
E 480/60/1
F 480/60/3
G 347/60/1
H 575/60/3
J 380/50/3
K 120/60/1
Digit 27, 28, 29—Electric Heat kW
000 None
050 0.5 kW
010 1.0 kW
015 1.5 kW
460 46.0 kW
Notes:
0.5 to 8.0 kW – ½ kW increments
8.0 to 18.0 kW – 1 kW increments
18.0 to 46.0 kW – 2 kW increments
Digit 30—Electric Heat Stages
0 None
1 1 Stage
2 2 Stages Equal
3 3 Stages Equal
Digit 31—Contactors
0 None
1 24-volt magnetic
2 24-volt mercury
3 PE with magnetic
4 PE with mercury
Digit 32—Not Used
0 N/A
Digit 33—Not Used
0 N/A
Digit 34—Actuator
0 Standard
A
B
Spring Return (Normally Open)
Spring Return (Normally
Closed)
Digit 35—Sensor Options
0 Standard (Wired)
1 Factory Mounted Wireless
Receiver (Sensor Accessory)
VAV-PRC008-EN
SD 3

Single-Duct
Selection
Procedure
This section describes the catalog
selection of single-duct VAV terminal
units with specific examples. A
computer selection program is also
available to aid in selection of VAV
terminal units.
Selection of single-duct VAV terminal
units can involve three elements:
• Air valve selection
• Heating coil selection (if required)
• Acoustics
Air Valve Selection
The wide-open static pressure and
airflows are found in the performance
data section of the catalog. To select an
air valve, locate the required design
cooling airflow for your terminal unit
type and find the smallest air valve size
that has a pressure drop equal to or
lower than the maximum wide-open
static pressure requirement.
Selection Example—
Cooling Only VCCF Terminal Unit
Design cooling airflow: 1700 cfm
Maximum wide open
Air pressure drop: 0.25 in. wg
Minimum cooling airflow: 850 cfm
From the performance data charts,
select a valve size 12, which has a wideopen
static pressure drop of 0.01 in. wg
Check the minimum and maximum cfm
desired with the minimum and
maximum cfm allowed in the table in
the general data section. The maximum
setting of 1700 cfm is within the
acceptable range. The desired minimum
setting of 850 cfm is acceptable for the
cooling only box desired. Note that if an
electric reheat box was selected, the
minimum cfm would be dependent
upon the kW of the electric heater. (See
Electric Heat Unit Selection.)
Heating Coil Selection (If
required)
First, determine the amount of heat
required to meet space and
downstream duct heat losses from a
load calculation.
Hot Water Heat
Select a hot water coil sufficient to meet
the design heat loss.
Example:
VCWF, Hot Water Unit Heat, Size 12
(See air Valve Selection)
Heating airflow: 850 cfm
Hot water flow:
1.0 gpm
Design Heat Loss: Q =25 MBh
SD 4
Select hot water coil from the coil
performance table in the Performance
Data section of the catalog.
Selection:
A one-row coil is sufficient to meet
design conditions. From the Hot Water
Coil Capacity Data of the Performance
Data Section, a one-row coil for a size
12 air valve will operate at the above
conditions as follows:
Coil Capacity:
25.17 MBh
Water pressure drop: 0.72 ft WPD
Air pressure drop (APD) of the hot
water coil is included in the chart
preceding the hot water coil
performance data section.
APD = 0.35 in. wg
Electric Heat
Determine the kW required to meet
zone design heat loss.
kW = MBh / 3.414
MBh = Design Heat Loss
Select the nearest available kW with
voltage and steps desired from the
electric heater kW guideline table in the
Performance Data section of the
catalog.
Example:
VCEF, Electric Unit Heat, Size 12
(See Air Valve Selection)
Heating airflow: 850 cfm
Voltage:
277/60/1 VAC
Design Heat Loss: Q = 25 MBh
kW = Q/3.414
kW = 25/3.414
kW = 7.3
Selection:
Select 7.5 kW from the electric heat
table in the voltage and stages
required. The table shows the
minimum cfm allowable for the kW
selected. The static pressure
requirement is shown as 0.06 in. wg
for this example with a design cooling
flow of 1700 cfm.
Check Leaving Air Temperature:
Q
LAT =
T is the primary entering air
temperature 55°F for this example.
LAT =
3414 x 7.5 + 55 = 82.8
1.085 x 850
Decide if leaving air temperature of
82.8°F is satisfactory for your
application.
Acoustics
The acoustical data found in the
"Performance Data" section of the VAV
catalog is used to make a
determination of the amount of noise
the terminal unit will generate. Locate
the table for the VAV terminal unit of
interest. Sound power data and an
equivalent NC level for an ARI 885-98
transfer function is listed.
Example:
VCCF, Cooling-Only Terminal Unit, Size
10 (See air Valve Selection)
Cooling Airflow: 1100 cfm
Maximum inlet static
pressure:
1.5 in. wg
Interpolation gives sound power
data of:
Octave 2 3 4 5 6 7 NC
Band
Disch. 68 68 65 65 60 57 28
Sound
Power
Rad. 63 58 54 47 39 32 29
Sound
Power
The NC level above is determined by
using either the catalog’s ARI 885-98
(mineral fiber for radiated sound)
transfer function for the conditions
shown in the acoustics table. A
different transfer function could be
applied as conditions dictate.
The maximum NC level is NC-37. If the
maximum NC level was exceeded, it
would have been necessary to reselect
the next larger unit size.
Computer Selection
The advent of personal computers has
served to automate many processes
that were previously repetitive and
time-consuming. One of those tasks is
the proper scheduling, sizing, and
selection of VAV terminal units. Trane
has developed a computer program to
perform these tasks. The software is
called the Trane Official Product
Selection System (TOPSS).
+ T 1.085 x CFM
The TOPSS program will take the input
specifications and output the properly
sized VariTrane VAV terminal unit along
with the specific performance for that
size unit.
The program has several required
fields, denoted by red shading in the
TOPSS screen, and many other
optional fields to meet the criteria you
have. Required values include
maximum and minimum airflows,
control type, and model. If selecting
models with reheat, you will be
required to enter information to make
VAV-PRC008-EN

Single-Duct
Selection
Procedure
that selection also. The user is given
the option to look at all the information
for one selection on one screen or as a
schedule with the other VAV units on
the job.
The user can select single-duct, dualduct,
and fan-powered VAV boxes with
the program, as well as most other
Trane products, allowing you to select
all your Trane equipment with one
software program.
The program will also calculate sound
power data for the selected terminal
unit. The user can enter a maximum
individual sound level for each octave
band or a maximum NC value. The
program will calculate acoustical data
subject to default or user supplied
sound attenuation data.
Schedule View
The program has many time-saving features such as:
• Copy/Paste from spreadsheets like Microsoft ® Excel
• Easily arranged fields to match your schedule
• Time-saving templates to store default settings
The user can also export the Schedule View to Excel to modify and put into a CAD
drawing as a schedule.
Specific details regarding the program, its operation, and how to obtain a copy of it
are available from your local Trane sales office.
Required entry fields (in Red
on TOPSS screen).
Rearrange what fields you see
and in what order with a few
clicks of a button.
VAV-PRC008-EN
SD 5

Single-Duct
General Data—
Valve/Controller
Airflow Guidelines
Primary Airflow Control Factory Settings – I-P
Control Air Valve Maximum Valve Maximum Controller Minimum Controller Constant Volume
Type Size (in.) Cfm Cfm Cfm Cfm
4 225 25–225 0,25–225 25–225
5 350 40–350 0,40–350 40–350
6 500 60–500 0,60–500 60–500
Direct Digital Control/ 8 900 105–900 0,105–900 105–900
UCM 10 1400 165–1400 0,165–1400 165–1400
12 2000 240–2000 0,240–2000 240–2000
14 3000 320–3000 0,320–3000 320–3000
16 4000 420–4000 0,420–4000 420–4000
24 x 16 8000 800–8000 0,800–8000 800–8000
4 225 38–225 0,38–225 38–225
5 350 63–350 0,63–350 63–350
6 500 73–500 0,73–500 73–500
Pneumatic with 8 900 134–900 0,134–900 134–900
Volume Regulator 10 1400 215–1400 0,215–1400 215–1400
12 2000 300–2000 0,300–2000 300–2000
14 2887 408–2887 0,408–2887 408–2887
16 3789 536–3789 0,536–3789 536–3789
24 x 16 7745 1096–7745 0,1096–7745 1096–7745
4 225 52–225 0,52–225 52–225
5 350 82–350 0,82–350 82–350
6 500 120–500 0,120–500 120–500
Analog Electronic 8 900 210–900 0,210–900 210–900
10 1400 328–1400 0,328–1400 328–1400
12 2000 470–2000 0,470–2000 470–2000
14 3000 640–3000 0,640–3000 640–3000
16 4000 840-4000 0,840–4000 840–4000
24 x 16 8000 1600-8000 0,1600–8000 1600–8000
Primary Airflow Control Factory Settings – SI
Control Air Valve Maximum Valve Maximum Controller Minimum Controller Constant Volume
Type Size (in.) L/s L/s L/s L/s
4 106 12–106 0,12–106 12–106
5 165 19–165 0,19–165 19–165
6 236 28–236 0,28–236 28–236
Direct Digital Control/ 8 425 50–425 0,50–425 50–425
UCM 10 661 77–661 0,77–661 77–661
12 944 111–944 0,111–944 111–944
14 1416 151–1416 0,151–1416 151–1416
16 1888 198–1888 0,198–1888 198–1888
24 x 16 3776 378–3776 0,378–3776 378–3776
4 106 18–106 0,18–106 18–106
5 165 30–165 0,30–165 30–165
6 236 35–236 0,35–236 35–236
Pneumatic with 8 425 63–425 0,63–425 63–425
Volume Regulator 10 661 102–661 0,102–661 102–661
12 944 141–944 0,141–944 141–944
14 1363 193–1363 0,193–1363 193–1363
16 1788 253–1788 0,253–1788 253–1788
24 x 16 3656 517–3656 0,517–3656 517–3656
4 106 25–106 0,25–106 25–106
5 165 39–165 0,39–165 39–165
6 236 57–236 0,57–236 57–236
Analog Electronic 8 425 100–425 0,100–425 100–425
10 661 155–661 0,155–661 155–661
12 944 222–944 0,222–944 222–944
14 1416 303–1416 0,303–1416 303–1416
16 1888 397–1888 0,397–1888 397–1888
24 x 16 3776 756–3776 0,756–3776 756–3776
Note: Maximum airflow must be greater than or equal to minimum airflow.
SD 6
VAV-PRC008-EN

Single-Duct
Performance
Data—Air Pressure
Requirements
Air Pressure Drop – in. wg (I-P)
Inlet Airflow Cooling Hot Water Electric
Size Cfm Only 1-row coil 2-row coil Heat
04 50 0.01 0.01 0.01 0.01
100 0.01 0.02 0.02 0.01
150 0.01 0.03 0.03 0.01
225 0.01 0.06 0.06 0.02
05 100 0.01 0.01 0.03 0.01
200 0.01 0.05 0.08 0.01
300 0.01 0.09 0.17 0.02
350 0.02 0.12 0.22 0.02
06 100 0.01 0.02 0.03 0.01
250 0.05 0.11 0.17 0.05
350 0.10 0.22 0.32 0.11
500 0.22 0.45 0.63 0.23
08 200 0.01 0.03 0.05 0.01
400 0.02 0.10 0.17 0.02
600 0.04 0.20 0.34 0.05
900 0.08 0.40 0.69 0.11
10 500 0.01 0.07 0.12 0.01
800 0.01 0.15 0.26 0.02
1100 0.01 0.27 0.44 0.03
1400 0.01 0.42 0.66 0.05
12 800 0.01 0.10 0.19 0.01
1200 0.01 0.19 0.35 0.03
1600 0.01 0.31 0.55 0.05
2000 0.01 0.45 0.79 0.08
14 1500 0.01 0.10 0.23 0.01
2000 0.01 0.16 0.36 0.01
2500 0.01 0.22 0.51 0.01
3000 0.01 0.30 0.69 0.01
16 2000 0.01 0.11 0.30 0.01
2500 0.01 0.16 0.46 0.02
3000 0.01 0.22 0.65 0.02
4000 0.01 0.35 1.14 0.03
24 x 16 4000 0.01 0.40 0.66 0.15
5500 0.01 0.70 1.12 0.30
6500 0.01 0.95 1.47 0.44
8000 0.01 1.37 2.06 0.69
Air Pressure Drop – Pa (SI)
Inlet Airflow Cooling Hot Water Electric
Size L/s Only 1-row coil 2-row coil Heat
04 25 3 3 3 3
50 3 4 4 3
70 3 7 7 3
105 3 15 15 3
05 45 3 3 6 3
95 3 12 21 3
140 3 22 41 5
165 4 29 54 6
06 45 3 4 7 3
120 13 29 43 14
165 26 55 79 27
235 55 112 155 57
08 95 3 8 13 3
190 4 25 43 6
280 9 49 83 12
420 21 99 169 28
10 235 3 16 29 3
375 3 37 63 5
520 3 67 110 9
660 3 104 165 13
12 375 3 24 47 3
565 3 47 88 7
755 3 76 138 13
940 3 111 195 19
14 700 3 26 55 3
945 3 40 89 3
1180 3 56 127 3
1415 3 74 171 3
16 940 3 28 73 3
1180 3 40 114 4
1415 3 54 162 5
1885 3 87 284 8
24 x 16 1885 3 100 165 38
2600 3 176 279 76
3070 3 236 366 110
3775 3 341 513 172
Note: Hot water pressure drops are for the entire unit, not just the coil. To calculate the hot water coil only pressure drop, subtract the cooling only pressure drop from the
other pressure drop.
VAV-PRC008-EN
SD 7

Single-Duct
Performance
Data—Air Pressure
Requirements (I-P)
Integral Outlet Plenum Air Pressure Drop – in. wg (I-P)
Outlet
Inlet Outlet Diameter Airflow (Cfm)
Size Configuration (in.) 50 100 150 200 250 350 400 500 600 800 900 1100 1200 1400 1600 2000
4,5,6 A,C 5 0.02 0.07 0.15 0.26 0.41 0.80 1.04 1.63
4,5,6 6 0.01 0.03 0.07 0.13 0.20 0.37 0.48 0.74
8,10 AC 8 0.04 0.06 0.11 0.14 0.23 0.33 0.58 0.74 1.11 1.33 1.81
10 10 0.01 0.02 0.04 0.05 0.08 0.12 0.21 0.27 0.41 0.48 0.66
12 10 0.03 0.06 0.08 0.12 0.17 0.29 0.37 0.54 0.64 0.86 1.11 1.71
4,5,6 B 5 0.01 0.03 0.08 0.15 0.23 0.48 0.64 1.02
4,5,6 6 0.01 0.01 0.01 0.03 0.04 0.07 0.10 0.15
8 8 0.01 0.01 0.02 0.02 0.03 0.05 0.07 0.09
10 B 8 0.02 0.04 0.07 0.09 0.14 0.20 0.35 0.44 0.65 0.76 1.03
10 10 0.01 0.01 0.01 0.01 0.02 0.02 0.04 0.06 0.08 0.10 0.13
12 10 0.02 0.04 0.05 0.08 0.11 0.19 0.24 0.36 0.43 0.58 0.76 1.17
4,5,6 D,E 5 0.01 0.01 0.02 0.04 0.05 0.09 0.12 0.17
4,5,6 6 0.01 0.01 0.01 0.01 0.01 0.01 0.02 0.03
8 D, E 5 0.06 0.09 0.18 0.23 0.35 0.49 0.85 1.06
8 6 0.02 0.03 0.05 0.07 0.11 0.15 0.26 0.32
8 8 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01
10 D, E 6 0.02 0.04 0.07 0.10 0.15 0.22 0.38 0.48 0.72 0.85 1.16
10 8 0.01 0.01 0.01 0.02 0.02 0.04 0.06 0.08 0.12 0.14 0.19
10 10 0.01 0.01 0.01 0.01 0.01 0.01 0.02 0.02 0.03 0.04 0.05
12 D, E 8 0.01 0.02 0.03 0.05 0.07 0.12 0.15 0.23 0.28 0.38 0.49 0.77
12 10 0.01 0.01 0.02 0.02 0.04 0.05 0.07 0.08 0.11 0.14 0.21
4,5,6 F 6 0.01 0.01 0.03 0.05 0.08 0.16 0.21 0.32
4,5,6,8 5 0.01 0.03 0.06 0.10 0.16 0.30 0.38 0.58 0.83 1.43 1.78
8,10 F 6 0.05 0.08 0.14 0.18 0.27 0.37 0.61 0.76 1.08 1.26 1.66
8,10 8 0.01 0.02 0.04 0.06 0.09 0.13 0.23 0.29 0.43 0.52 0.71
10 F 10 0.01 0.01 0.02 0.02 0.03 0.04 0.07 0.08 0.12 0.14 0.18
12 8 0.02 0.04 0.05 0.07 0.10 0.17 0.21 0.31 0.37 0.50 0.64 0.98
12 10 0.01 0.02 0.02 0.03 0.04 0.06 0.08 0.11 0.13 0.16 0.21 0.30
4,5,6 H 5 0.01 0.01 0.01 0.01 0.01 0.03 0.04 0.06
4 6 0.01 0.01 0.01 0.01
5 6 0.01 0.01 0.01 0.01 0.01 0.01
6 6 0.01 0.01 0.01 0.01 0.01 0.01 0.01
8 H 5 0.03 0.05 0.09 0.11 0.18 0.25 0.43 0.54
8 6 0.01 0.01 0.02 0.03 0.04 0.06 0.10 0.13
8 8 0.01 0.01 0.01 0.01 0.01 0.01 0.02 0.03
10 H 6 0.01 0.02 0.04 0.05 0.08 0.11 0.18 0.22 0.32 0.38 0.50
10 8 0.01 0.01 0.01 0.01 0.01 0.02 0.03 0.03 0.05 0.05 0.07
10 10 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01
12 H 8 0.01 0.01 0.02 0.03 0.04 0.06 0.08 0.11 0.13 0.17 0.21 0.32
12 10 0.01 0.01 0.01 0.01 0.01 0.02 0.02 0.03 0.03 0.05 0.06 0.09
10 J 5 0.02 0.02 0.05 0.06 0.09 0.13 0.23 0.29 0.43 0.51 0.70
12 5 0.03 0.06 0.08 0.12 0.17 0.30 0.38 0.57 0.68 0.92 1.20 1.87
12 6 0.01 0.02 0.03 0.04 0.06 0.11 0.14 0.21 0.25 0.35 0.45 0.71
OUTL CONVERSION CHART
SYMBOL NOMINALØ
I 5" (127 mm)
6" (152 mm)
II
III
IV
8" (203 mm)
10" (254 mm)
OUTLET AVAILABILITY CHART - SEE OUTL CONVERSION FOR NOMINALØ
VALV 4
OUTL
A,B,C
D,E,F
H
J
5 6
8 10 12
I, II I, II I, II III III, IV IV
I, II I, II I, II I, II, III II, III, IV III, IV
I, II I, II I, II I, II, III II, III, IV III, IV
N/A N/A N/A N/A
I
I, II
OUTLET PLENUM
ARRANGEMENTS A B C D
(TOP VIEW)
E
F
H
J
SD 8
VAV-PRC008-EN

Single-Duct
Performance
Data—Air Pressure
Requirements (SI)
Integral Outlet Plenum Air Pressure Drop – Pa (SI)
Outlet
Inlet Outlet Diameter Airflow (L/s)
Size Configuration (mm) 25 50 70 95 120 165 190 235 280 375 420 520 565 660 755 940
4,5,6 A,C 127 4 17 37 66 102 199 260 405
4,5,6 152 3 8 18 32 49 93 120 185
8,10 AC 203 9 14 27 36 56 81 145 185 277 330 451
10 254 3 5 10 13 21 30 53 67 101 120 164
12 254 8 15 19 29 42 73 91 134 159 214 277 427
4,5,6 B 127 3 8 20 36 58 119 158 254
4,5,6 152 3 3 4 6 10 19 24 37
8 203 3 3 5 6 8 11 19 23
10 B 203 6 9 17 22 35 49 86 109 161 190 257
10 254 3 3 3 3 4 6 11 14 20 24 33
12 254 5 10 12 19 28 48 61 90 107 145 188 292
4,5,6 D,E 127 3 3 6 9 13 23 29 42
4,5,6 152 3 3 3 3 3 3 4 6
8 D, E 127 15 23 44 57 87 123 211 264
8 152 5 7 13 17 26 37 64 81
8 203 3 3 3 3 3 3 3 3
10 D, E 152 6 9 18 24 37 54 95 120 179 213 289
10 203 3 3 3 4 6 9 16 20 30 35 48
10 254 3 3 3 3 3 3 4 5 8 9 12
12 D, E 203 3 6 7 12 17 30 38 57 69 94 123 193
12 254 3 3 3 4 6 10 12 17 20 27 34 52
4,5,6 F 152 3 4 8 14 21 40 52 81
4,5,6,8 127 3 7 15 25 39 74 95 145 206 355 444
8,10 F 152 13 19 35 45 66 92 153 189 269 315 414
8,10 203 3 5 10 14 22 31 56 72 108 129 177
10 F 254 3 3 4 5 7 10 17 21 29 34 45
12 203 5 9 11 18 25 43 53 78 92 124 159 244
12 254 3 4 5 7 9 16 19 27 31 41 51 75
4,5,6 H 127 3 3 3 3 3 7 9 15
4 152 3 3 3 3
5 152 3 3 3 3 3 3
6 152 3 3 3 3 3 3 3
8 H 127 8 12 22 29 44 62 108 136
8 152 3 3 6 7 11 15 26 33
8 203 3 3 3 3 3 3 5 6
10 H 152 4 5 10 13 19 27 45 56 81 95 126
10 203 3 3 3 3 3 4 6 8 12 14 18
10 254 3 3 3 3 3 3 3 3 3 3 3
12 H 203 3 3 4 6 9 15 19 27 32 42 53 80
12 254 3 3 3 3 3 4 5 7 9 11 15 22
10 J 127 4 6 11 15 23 33 58 73 108 128 173
12 127 7 14 19 29 42 75 95 142 168 229 299 467
12 152 3 5 7 11 15 28 35 53 63 86 113 178
OUTL CONVERSION CHART
SYMBOL NOMINALØ
I 5" (127 mm)
6" (152 mm)
II
III
IV
8" (203 mm)
10" (254 mm)
OUTLET AVAILABILITY CHART - SEE OUTL CONVERSION FOR NOMINALØ
VALV 4
OUTL
A,B,C
D,E,F
H
J
5 6
8 10 12
I, II I, II I, II III III, IV IV
I, II I, II I, II I, II, III II, III, IV III, IV
I, II I, II I, II I, II, III II, III, IV III, IV
N/A N/A N/A N/A
I
I, II
OUTLET PLENUM
ARRANGEMENTS A B C D
(TOP VIEW)
E
F
H
J
VAV-PRC008-EN
SD 9

Single-Duct
Performance
Data—Hot Water
Coil (I-P)
Inlet Size 04, 05, 06 (I-P)
Water
Pressure
Airflow (Cfm)
Rows Gpm Drop (ft) 45 60 90 100 150 200 250 300 400 500
1-Row 0.5 0.55 4.16 4.82 5.83 6.10 7.26 8.17 8.94 9.62 10.73 11.60
Capacity 1.0 1.84 4.42 5.20 6.41 6.75 8.22 9.42 10.47 11.40 13.00 14.36
MBH 1.5 3.74 4.52 5.34 6.63 7.00 8.60 9.93 11.11 12.17 14.02 15.62
2.0 6.22 4.57 5.41 6.75 7.13 8.80 10.21 11.46 12.59 14.60 16.34
2.5 9.24 4.61 5.46 6.82 7.22 8.93 10.39 11.68 12.86 14.97 16.81
2-Row 0.5 1.14 5.07 6.36 8.47 9.06 11.41 13.07 14.30 — — —
Capacity 1.0 3.84 5.25 6.68 9.16 9.89 12.97 15.34 17.23 18.77 21.15 22.90
MBH 1.5 7.80 5.31 6.79 9.40 10.18 13.53 16.20 18.39 20.21 23.10 25.30
2.0 12.95 5.34 6.84 9.52 10.32 13.83 16.66 19.01 20.99 24.18 26.65
2.5 19.16 5.36 6.88 9.59 10.41 14.01 16.94 19.39 21.48 24.87 27.51
Applicable Range Size 04
Size 05
Size 06
Inlet Size 08 (I-P)
Water
Pressure
Airflow (Cfm)
Rows Gpm Drop (ft) 165 200 300 400 500 600 700 800 900
1-Row 0.5 0.86 8.81 9.51 11.15 12.41 13.41 14.24 14.95 — —
Capacity 1.0 2.90 10.04 10.97 13.19 14.99 16.54 17.92 19.13 20.21 21.18
MBH 1.5 5.96 10.52 11.56 14.06 16.14 17.95 19.56 21.01 22.35 23.58
2.0 9.97 10.78 11.88 14.54 16.79 18.76 20.53 22.14 23.61 24.97
2.5 14.89 10.95 12.08 14.85 17.20 19.29 21.17 22.88 24.46 25.93
2-Row 2.0 0.35 15.01 16.97 21.32 24.48 26.88 28.78 30.32 31.61 32.70
Capacity 4.0 1.22 16.00 18.30 23.68 27.79 31.06 33.75 36.00 37.92 39.58
MBH 6.0 2.57 16.36 18.79 24.57 29.09 32.75 35.79 38.37 40.60 42.55
8.0 4.38 16.55 19.05 25.05 29.79 33.67 36.92 39.69 42.10 44.21
10.0 6.63 16.66 19.21 25.35 30.23 34.25 37.63 40.54 43.06 45.29
12.5 10.05 16.76 19.34 25.59 30.60 34.74 38.24 41.25 43.87 46.20
Inlet Size 10 (I-P)
Water
Rows Gpm Drop (ft) 350 450 550 650 750 850 1000 1100 1300 1400
1-Row 0.7 2.07 15.52 17.18 18.54 19.71 20.72 — — — — —
Capacity 1.0 3.87 16.89 18.79 20.51 22.01 23.34 24.54 26.12 27.07 28.74 29.48
MBH 1.5 7.93 18.16 20.40 22.37 24.13 25.76 27.28 29.33 30.58 32.81 33.83
2.0 13.20 18.87 21.30 23.47 25.42 27.22 28.87 31.18 32.62 35.23 36.42
2.5 19.67 19.31 21.88 24.18 26.26 28.19 29.98 32.45 33.97 36.82 38.14
2-Row 2.0 0.72 27.75 31.74 34.93 37.54 39.72 41.58 43.91 45.22 47.42 48.35
Capacity 4.0 2.62 30.43 35.52 39.76 43.37 46.48 49.21 52.71 54.74 58.23 59.74
MBH 6.0 5.61 31.41 36.93 41.62 45.66 49.19 52.30 56.36 58.73 62.86 64.67
8.0 9.65 31.92 37.68 42.61 46.89 50.65 53.99 58.37 60.94 65.44 67.43
10.0 14.71 32.24 38.15 43.23 47.66 51.57 55.05 59.64 62.35 67.10 69.20
Notes:
1. Fouling Factor = 0.00025
2. Capacity based on 55°F entering air temperature and 180°F entering water temperature. Refer to correction factors for different
entering conditions on page 42.
3. The following equations may be used in calculating Leaving Air Temperature (LAT) and Water Temperature Difference (WTD).
LAT = EAT +
Pressure
Airflow (Cfm)
MBH x 921.7
(
WTD = EWT - LWT =
Cfm ) 2 x MBH
Gpm
( )
SD 10
VAV-PRC008-EN

Single-Duct
Performance
Data—Hot Water
Coil (I-P)
Inlet Size 12 (I-P)
Water
Pressure
Airflow (Cfm)
Rows Gpm Drop (ft) 400 600 800 1000 1200 1400 1600 1800 2000
1-Row 1.0 0.68 18.07 21.12 23.48 25.37 26.96 28.30 29.47 30.49 31.39
Capacity 2.0 2.37 20.76 24.83 28.16 31.04 33.61 35.88 37.91 39.74 41.41
MBH 3.0 4.95 21.84 26.41 30.24 33.58 36.55 39.24 41.74 44.03 46.13
4.0 8.38 22.42 27.28 31.40 35.02 38.28 41.26 43.99 46.51 48.88
5.0 12.62 22.78 27.83 32.14 35.95 39.41 42.57 45.49 48.21 50.74
2-Row 2.0 0.25 — — — — — — — — —
Capacity 5.0 1.38 35.55 45.61 53.18 59.13 63.96 67.96 71.36 74.28 76.82
MBH 8.0 3.35 36.91 47.07 56.74 63.72 69.50 74.37 78.57 82.22 85.44
11.0 6.14 37.56 49.28 58.51 66.04 72.33 77.69 82.33 86.40 90.01
14.0 9.72 37.95 50.00 59.58 67.45 74.06 79.73 84.66 88.99 92.85
17.5 14.90 38.24 50.54 60.39 68.53 75.39 81.30 86.46 91.01 95.06
Notes:
1. Fouling Factor = 0.0005 °F ft² h/Btu.
2. Capacity based on 55°F entering air temperature and 180°F entering water temperature.
Inlet Size 14 (I-P)
Water
Pressure
Airflow (Cfm)
Rows Gpm Drop (ft) 700 900 1100 1300 1500 1700 2000 2300 2600 3000
1-Row 2.0 1.23 31.76 35.18 38.24 40.91 43.27 45.38 48.18 50.62 52.77 55.28
Capacity 3.0 2.56 34.35 38.43 42.00 45.19 48.14 50.86 54.53 57.80 60.73 64.21
MBH 4.0 4.32 35.80 40.28 44.24 47.82 51.09 54.10 58.28 62.10 65.56 69.72
5.0 6.50 36.73 41.47 45.70 49.54 53.07 56.34 60.85 64.96 68.79 73.44
6.0 9.08 37.38 42.31 46.73 50.76 54.48 57.94 62.74 67.12 71.15 76.13
7.0 12.05 37.86 42.93 47.49 51.67 55.53 59.14 64.15 68.75 73.01 78.21
2-Row 5.0 1.09 55.66 63.95 70.65 76.21 80.91 84.94 90.02 94.23 97.79 101.78
Capacity 9.0 3.32 59.72 69.65 77.96 85.04 91.16 96.51 103.42 109.29 114.33 120.09
MBH 13.0 6.71 61.41 72.08 91.13 88.93 95.74 101.76 109.59 116.30 122.14 128.86
17.0 11.24 62.34 73.44 82.92 91.13 98.35 104.76 113.16 120.39 126.71 134.03
21.0 16.89 62.94 74.31 84.06 92.56 100.05 106.72 115.49 123.08 129.73 137.45
22.5 19.29 63.11 74.56 84.40 92.98 100.54 107.29 116.17 123.87 130.62 138.46
Notes:
1. Fouling Factor = 0.0005 °F ft² h/Btu.
2. Capacity based on 55°F entering air temperature and 180°F entering water temperature.
Inlet Size 16 (I-P)
Water
Pressure
Airflow (Cfm)
Rows Gpm Drop (ft) 900 1200 1500 1800 2000 2400 2800 3200 3600 4000
1-Row 2.0 1.37 38.24 43.01 46.92 50.22 52.17 55.58 58.48 60.99 63.19 65.12
Capacity 3.0 2.84 41.85 47.41 52.24 56.54 59.12 63.73 67.76 71.32 74.49 77.34
MBH 4.0 4.77 43.89 50.10 55.46 60.22 63.20 68.61 73.40 77.69 81.56 85.07
5.0 7.16 45.21 51.85 57.64 62.82 66.00 71.85 77.19 82.01 86.39 90.40
6.0 9.98 46.14 53.08 59.19 64.67 68.06 74.28 79.91 85.13 89.90 94.29
7.5 15.02 47.10 54.38 60.81 66.64 70.24 76.91 82.97 88.52 93.67 98.49
2-Row 5.0 1.15 68.70 79.75 88.29 95.11 98.96 105.40 110.59 114.89 118.51 121.61
Capacity 9.0 3.50 74.51 88.21 99.24 108.35 113.62 122.64 130.12 136.45 141.90 146.64
MBH 13.0 7.05 76.95 91.85 104.07 114.31 120.28 130.63 139.34 146.78 153.23 158.90
17.0 11.78 78.30 93.89 106.80 117.70 124.11 135.27 144.71 152.85 159.94 166.20
21.0 17.67 79.16 95.20 108.56 119.91 126.60 138.31 148.26 156.86 164.39 171.06
22.5 20.18 79.40 95.58 109.07 120.55 127.32 139.19 149.30 158.04 165.70 172.49
Notes:
1. Fouling Factor = 0.0005 °F ft² h/Btu.
2. Capacity based on 55°F entering air temperature and 180°F entering water temperature. Refer to correction factors found on page 42
for different entering conditions.
3. The following equations may be used in calculating Leaving Air Temperature (LAT) and Water Temperature Difference (WTD).
LAT = EAT + MBH x 921.7
(
WTD = EWT - LWT =
Cfm ) 2 x MBH
Gpm
( )
VAV-PRC008-EN
SD 11

Single-Duct
Performance
Data—Hot Water
Coil (I-P)
Inlet Size 16 x 24 (I-P)
Water
LAT = EAT +
Pressure
Airflow (Cfm)
Rows Gpm Drop (ft) 1000 1700 2400 3100 3800 4500 5200 5900 6600 7300 8000
1-Row 2.0 1.51 42.77 52.52 59.23 64.28 68.27 71.50 74.18 76.44 78.38 80.05
Capacity 3.0 3.11 47.00 58.99 68.05 75.19 81.02 85.90 90.04 93.62 96.75 99.50
MBH 4.0 5.21 49.47 62.79 73.31 81.88 89.04 95.14 100.43 105.05 109.14 112.79
5.0 7.81 51.07 65.46 76.79 86.39 94.52 101.55 107.71 113.15 118.01 122.37
6.0 10.88 52.20 67.37 79.41 89.63 98.51 106.25 113.09 119.18 124.65 129.60
7.5 16.35 53.37 69.38 82.26 93.19 102.80 111.34 118.95 125.79 131.98 137.62
2-Row 5.0 1.26 77.04 99.78 113.85 123.52 130.63 136.11 140.49 144.09 147.10 149.66
Capacity 9.0 3.71 83.86 113.03 132.54 146.70 157.53 166.15 173.21 179.13 184.17 188.53
MBH 13.0 7.34 86.70 118.88 141.13 157.68 170.59 181.01 189.66 196.97 203.26 208.74
17.0 12.13 88.27 122.18 146.09 164.10 178.31 189.88 199.55 207.78 214.89 221.13
21.0 18.02 89.27 124.32 149.31 168.32 183.42 195.79 206.17 215.05 222.75 229.51
22.5 20.52 59.56 124.93 150.25 169.56 184.92 197.53 208.13 217.20 225.07 232.00
Notes:
1. Fouling Factor = 0.0005 °F ft² h/Btu.
2. Capacity based on 55°F entering air temperature and 180°F entering water temperature. Refer to correction factors found on page 42
for different entering conditions.
3. The following equations may be used in calculating Leaving Air Temperature (LAT) and Water Temperature Difference (WTD).
MBH x 921.7
(
WTD = EWT - LWT =
Cfm ) (
2 x MBH
Gpm
Temperature Correction Factors for Water Pressure Drop (ft)
Average Water Temperature 200 190 180 170 160 150 140 130 120 110
Correction Factor 0.970 0.985 1.000 1.020 1.030 1.050 1.080 1.100 1.130 1.150
Temperature Correction Factors for Coil Capacity (MBH)
Entering Water Minus Entering Air 40 50 60 70 80 100 125 140 150 160 180 200
Correction Factor 0.32 0.40 0.48 0.56 0.64 0.80 1.00 1.12 1.20 1.28 1.44 1.60
)
Coil Only–Water Weights
Internal Internal Operating
Inlet Coil Volume Volume Weight
Size Type (in. 3 ) (Gal.) (lbs)
04 1-Row 9.37 0.041 5.3
05 1-Row 9.37 0.041 5.3
06 1-Row 9.37 0.041 5.3
08 1-Row 12.78 0.055 5.5
10 1-Row 19.06 0.083 7.7
12 1-Row 30.05 0.130 10.7
14 1-Row 51.21 0.222 13.9
16 1-Row 58.62 0.254 16.2
24 x 16 1-Row 66.03 0.286 20.4
04 2-Row 23.68 0.102 6.9
05 2-Row 23.68 0.102 6.9
06 2-Row 23.68 0.102 6.9
08 2-Row 35.47 0.154 9.0
10 2-Row 48.83 0.211 11.7
12 2-Row 67.34 0.292 15.5
14 2-Row 94.27 0.408 19.8
16 2-Row 109.09 0.472 23.3
24 x 16 2-Row 123.91 0.536 29.8
SD 12
VAV-PRC008-EN

Single-Duct
Performance
Data—Hot Water
Coil (SI)
Inlet Size 04, 05, 06 (SI)
Water
Pressure
Inlet Size 08 (SI)
Water
Airflow (L/s)
Rows L/s Drop (kPa) 21 28 42 47 71 94 118 142 189 236
1-Row 0.03 1.57 1.20 1.38 1.66 1.73 2.05 2.30 2.52 2.70 3.01 3.26
Capacity 0.06 5.26 1.27 1.49 1.82 1.91 2.31 2.64 2.93 3.19 3.63 4.01
kW 0.010 10.72 1.30 1.53 1.88 1.98 2.42 2.78 3.10 3.39 3.91 4.35
0.13 17.82 1.32 1.55 1.91 2.02 2.47 2.86 3.20 3.51 4.06 4.54
0.16 26.47 1.32 1.56 1.93 2.04 2.51 2.91 3.26 3.58 4.16 4.67
2-Row 0.06 1.85 1.48 1.88 2.54 2.73 3.53 4.14 4.61 4.99 5.58 6.00
Capacity 0.13 6.39 1.52 1.94 2.68 2.90 3.84 4.60 5.22 5.73 6.56 7.19
kW 0.19 13.28 1.53 1.96 2.72 2.95 3.96 4.77 5.45 6.02 6.96 7.69
0.25 22.39 1.54 1.97 2.75 2.98 4.01 4.86 5.57 6.18 7.18 7.96
0.32 33.61 1.54 1.98 2.76 3.00 4.05 4.92 5.65 6.28 7.32 8.14
Notes:
1. Fouling Factor = 0.0005.
2. Capacity based on 12°C entering air temperature and 82°C entering water temperature.
Pressure
Airflow (L/s)
Rows L/s Drop (kPa) 78 94 142 189 236 283 330 378 425
1-Row 0.03 2.12 2.47 2.66 3.12 3.47 3.75 3.99 4.18 4.35 4.50
Capacity 0.06 7.05 2.81 3.06 3.68 4.18 4.61 4.99 5.33 5.63 5.90
kW 0.09 14.35 2.94 3.22 3.92 4.49 4.99 5.44 5.84 6.22 6.56
0.13 23.82 3.01 3.31 4.05 4.67 5.22 5.71 6.15 6.56 6.93
0.16 35.35 3.06 3.37 4.13 4.78 5.36 5.88 6.35 6.79 7.20
2-Row 0.13 0.98 — — — — — — — — —
Capacity 0.25 3.48 4.54 5.18 6.67 7.79 8.69 9.42 10.03 10.55 11.01
kW 0.38 7.37 4.65 5.33 6.92 8.16 9.16 9.99 10.70 11.30 11.83
0.50 12.56 4.70 5.40 7.06 8.36 9.42 10.31 11.07 11.72 12.29
0.63 19.04 4.74 5.45 7.15 8.49 9.59 10.51 11.30 11.99 12.59
0.79 28.90 4.77 5.49 7.22 8.60 9.73 10.68 11.50 12.22 12.84
Notes:
1. Fouling Factor = 0.0005.
2. Capacity based on 12°C entering air temperature and 82°C entering water temperature.
Inlet Size 10 (SI)
Water
Rows L/s Drop (kPa) 165 212 260 307 354 401 472 519 613 661
1-Row 0.04 5.29 4.36 4.83 5.21 5.54 5.83 6.08 6.41 6.61 6.94 7.09
Capacity 0.06 9.81 4.74 5.27 5.75 6.17 6.54 6.88 7.33 7.60 8.07 8.28
kW 0.09 19.90 5.09 5.71 6.26 6.75 7.21 7.63 8.21 8.55 9.18 9.47
0.13 33.00 5.28 5.96 6.56 7.10 7.60 8.07 8.71 9.11 9.84 10.17
0.16 48.93 5.40 6.11 6.75 7.33 7.87 8.37 9.06 9.48 10.28 10.64
2-Row 0.13 2.07 7.87 8.98 9.87 10.59 11.20 11.72 12.36 12.73 13.34 13.60
Capacity 0.25 7.53 8.64 10.06 11.23 12.23 13.10 13.85 14.81 15.37 16.34 16.75
kW 0.38 16.15 8.93 10.46 11.76 12.88 13.86 14.72 15.83 16.49 17.62 18.12
0.50 27.83 9.07 10.68 12.05 13.23 14.27 15.19 16.40 17.10 18.34 18.88
0.63 42.50 9.17 10.81 12.22 13.45 14.53 15.49 16.75 17.50 18.80 19.38
Notes:
1. Fouling Factor = 0.0005.
2. Capacity based on 12°C entering air temperature and 82°C entering water temperature. Refer to correction factors for different
entering conditions on page 45.
3. The following equations may be used in calculating Leaving Air Temperature (LAT) and Water Temperature Difference (WTD).
LAT = EAT +
(
Pressure
Airflow (L/s)
( (4.19) L/s )
kW x 0.83
WTD = EWT - LWT =
L/s ) kW
VAV-PRC008-EN
SD 13

Single-Duct
Performance
Data—Hot Water
Coil (SI)
Inlet Size 12 (SI)
Water
Pressure
Airflow (L/s)
Rows L/s Drop (kPa) 189 283 378 472 566 661 755 849 944
1-Row 0.06 2.04 5.30 6.19 6.88 7.44 7.90 8.29 8.64 8.93 9.20
Capacity 0.13 7.08 6.08 7.28 8.25 9.10 9.85 10.51 11.11 11.65 12.14
kW 0.19 14.79 6.40 7.74 8.86 9.84 10.71 11.50 12.23 12.90 13.52
0.25 25.04 6.57 8.00 9.20 10.26 11.22 12.09 12.89 13.63 14.33
0.32 37.73 6.68 8.16 9.42 10.54 11.55 12.48 13.33 14.13 14.87
2-Row 0.13 0.74 — — — — — — — — —
Capacity 0.32 4.12 10.42 13.37 15.59 17.33 18.74 19.92 20.91 21.77 22.51
kW 0.50 10.01 10.82 14.09 16.63 18.68 20.37 21.80 23.03 24.10 25.04
0.69 18.35 11.01 14.44 17.15 19.35 21.20 22.77 24.13 25.32 26.38
0.88 29.06 11.12 14.65 17.46 19.77 21.71 23.37 24.81 26.08 27.21
1.10 44.53 11.21 14.81 17.70 20.08 22.10 23.83 25.34 26.67 27.86
Notes:
1. Fouling Factor = 0.0005.
2. Capacity based on 12°C entering air temperature and 82°C entering water temperature.
Inlet Size 14 (SI)
Water
Pressure
Airflow (L/s)
Rows L/s Drop (kPa) 330 425 519 613 708 802 944 1085 1227 1416
1-Row 0.13 3.69 9.31 10.31 11.21 11.99 12.68 13.30 14.12 14.84 15.47 16.20
Capacity 0.19 7.67 10.07 11.26 12.31 13.24 14.11 14.91 15.98 16.94 17.80 18.82
kW 0.25 12.93 10.49 11.80 12.97 14.01 14.97 15.86 17.08 18.20 19.21 20.43
0.32 19.43 10.76 12.15 13.39 14.52 15.55 16.51 17.83 19.04 20.16 21.52
0.38 27.13 10.95 12.40 13.69 14.88 15.97 16.98 18.39 19.67 20.85 22.31
0.44 36.01 11.09 12.58 13.92 15.14 16.28 17.33 18.80 20.15 21.40 22.92
2-Row 0.32 3.24 16.31 18.74 20.71 22.34 23.71 24.89 26.38 27.62 28.66 29.83
Capacity 0.57 9.93 17.50 20.41 22.85 24.92 26.72 28.28 30.31 32.03 33.51 35.20
kW 0.82 20.07 18.00 21.13 23.78 26.06 28.06 29.82 32.12 34.08 35.80 37.76
1.07 33.61 18.27 21.52 24.30 26.71 28.82 30.70 33.16 35.28 37.14 39.28
1.32 50.49 18.45 21.78 24.64 27.13 29.32 31.28 33.85 36.07 38.02 40.28
1.42 57.67 18.50 21.85 24.73 27.25 29.47 31.44 34.05 36.30 38.28 40.58
Notes:
1. Fouling Factor = 0.0005.
2. Capacity based on 12°C entering air temperature and 82°C entering water temperature.
Inlet Size 16 (SI)
Water
Pressure
Airflow (L/s)
Rows L/s Drop (kPa) 425 566 708 849 944 1133 1321 1510 1699 1888
1-Row 0.13 4.10 11.21 12.61 13.75 14.72 15.29 16.29 17.14 17.87 18.52 19.09
Capacity 0.19 8.48 12.26 13.90 15.31 16.57 17.33 18.68 19.86 20.90 21.83 22.67
kW 0.25 14.26 12.86 14.68 16.25 17.65 18.52 20.11 21.51 22.77 23.90 24.93
0.32 21.39 13.25 15.20 16.89 18.41 19.34 21.06 22.62 24.03 25.32 26.49
0.38 29.83 13.52 15.56 17.35 18.95 19.95 21.77 23.42 24.95 26.35 27.63
0.47 44.89 13.80 15.94 17.82 19.53 20.59 22.54 24.32 25.94 27.45 28.87
2-Row 0.32 3.44 20.13 23.37 25.88 27.88 29.00 30.89 32.41 33.67 34.73 35.64
Capacity 0.57 10.45 21.84 25.85 29.08 31.76 33.30 35.94 38.14 39.99 41.59 42.98
kW 0.82 21.07 22.55 26.92 30.50 33.50 35.25 38.28 40.84 43.02 44.91 46.57
1.07 35.21 22.95 27.52 31.30 34.50 36.37 39.64 42.41 44.79 46.87 48.71
1.32 52.82 23.20 27.90 31.82 35.14 37.10 40.53 43.45 45.97 48.18 50.13
1.42 60.31 23.27 28.01 31.97 35.33 37.31 40.79 43.75 46.32 48.56 50.55
Notes:
1. Fouling Factor = 0.0005.
2. Capacity based on 12°C entering air temperature and 82°C entering water temperature. Refer to correction factors for different
entering conditions on page 45.
3. The following equations may be used in calculating Leaving Air Temperature (LAT) and Water Temperature Difference (WTD).
LAT = EAT + kW x 0.83
WTD = EWT - LWT =
( L/s ) ( kW
(4.19) L/s )
SD 14
VAV-PRC008-EN

Single-Duct
Performance
Data—Hot Water
Coil (SI)
Inlet Size 16x24 (SI)
Water
Pressure
Airflow (L/s)
Rows L/s Drop (kPa) 472 802 1133 1463 1793 2124 2454 2784 3115 3445
1-Row 0.13 4.50 12.54 15.39 17.36 18.84 20.01 20.95 21.74 22.40 22.97 23.46
Capacity 0.19 9.28 13.77 17.29 19.94 22.04 23.74 25.17 26.39 27.44 28.35 29.16
kW 0.25 15.59 14.50 18.40 21.48 24.00 26.09 27.88 29.43 30.79 31.99 33.05
0.32 23.35 14.97 19.19 22.50 25.32 27.70 29.76 31.57 33.16 34.58 35.86
0.38 32.53 15.30 19.74 23.27 26.27 28.87 31.14 33.14 34.93 36.53 37.98
0.47 48.88 15.64 20.33 24.11 27.31 30.13 32.63 34.86 36.87 38.68 40.33
2-Row 0.32 3.75 22.58 29.24 33.37 36.20 38.28 39.89 41.17 42.23 43.11 43.86
Capacity 0.57 11.08 24.58 33.13 38.84 42.99 46.17 48.70 50.76 52.50 53.97 55.25
kW 0.82 21.95 25.41 34.84 41.36 46.21 49.99 53.05 55.58 57.73 59.57 61.18
1.07 36.25 25.87 35.81 42.81 48.09 52.26 55.65 58.48 60.89 62.98 64.81
1.32 53.88 26.16 36.43 43.76 49.33 53.76 57.38 60.42 63.02 65.28 67.26
1.42 61.34 26.25 36.61 44.03 49.69 54.20 57.89 61.00 63.65 65.96 67.99
Notes:
1. Fouling Factor = 0.0005.
2. Capacity based on 12°C entering air temperature and 82°C entering water temperature. Refer to correction factors for different
entering conditions on page 45.
3. The following equations may be used in calculating Leaving Air Temperature (LAT) and Water Temperature Difference (WTD).
kW x 0.83
kW
LAT = EAT + WTD = EWT - LWT =
( L/s ) ( (4.19) L/s )
Temperature Correction Factors for Water Pressure Drop (kPa)
Average Water Temperature 93 88 82 77 71 66 60 54 49 43
Correction Factor 0.970 0.985 1.000 1.020 1.030 1.050 1.080 1.100 1.130 1.150
Temperature Correction Factors for Coil Capacity (kW)
Entering Water Minus Entering Air 22 28 33 39 44 56 69 78 83 89 100 111
Correction Factor 0.32 0.40 0.48 0.56 0.64 0.80 1.00 1.12 1.20 1.29 1.45 1.61
Coil Only –Water Weights
Internal Internal Operating
Inlet Coil Volume Volume Weight
Size Type (cm 3 ) (liters) (kg)
04 1-Row 153.6 0.154 2.421
05 1-Row 153.6 0.154 2.421
06 1-Row 153.6 0.154 2.421
08 1-Row 209.4 0.209 2.477
10 1-Row 312.4 0.312 3.487
12 1-Row 492.5 0.493 4.853
14 1-Row 839.1 0.839 6.309
16 1-Row 960.6 0.961 7.337
24x16 1-Row 1082.0 1.082 9.273
04 2-Row 388.0 0.388 3.12
05 2-Row 388.0 0.388 3.12
06 2-Row 388.0 0.388 3.12
08 2-Row 581.3 0.580 4.099
10 2-Row 800.1 0.799 5.294
12 2-Row 1103.0 1.101 7.026
14 2-Row 1545.0 1.542 8.965
16 2-Row 1788.0 1.784 10.57
24x16 2-Row 2030.0 2.027 13.53
VAV-PRC008-EN
SD 15

Single-Duct
Performance
Data—
Electric Data
VCEF Electric Coil kW Guidelines – Minimum to Maximum
Inlet Single-Phase Voltage Three-Phase Voltage
Size Stages 120V 208V/240V 277V 347V 480V 208V 480V 575V 380V/50 Hz
04 1 1.0 1.0 1.0 1.0 1.0 1.0 1.0 — 1.0
2 1.0 1.0 1.0 1.0 — — — — —
3 1.0 1.0 1.0 1.0 — — — — —
05 1 1.0–2.5 1.0–2.5 1.0–2.5 1.0–2.5 1.0–2.5 1.0–2.5 1.0–2.5 1.5–2.5 1.0–2.5
2 1.0–2.5 1.0–2.5 1.0–2.5 1.0–2.5 1.5–2.5 1.0–2.5 — — —
3 1.0–2.5 1.0–2.5 1.0–2.5 1.5–2.5 — — — — —
06 1 1.0–4.0 1.0–4.0 1.0–4.0 1.0–4.0 1.0–4.0 1.0–4.0 1.0–4.0 1.5–4.0 1.0–4.0
2 1.0–4.0 1.0–4.0 1.0–4.0 1.0–4.0 1.5–4.0 1.0–4.0 — — —
3 1.0–4.0 1.0–4.0 1.0–4.0 1.5–4.0 — — — — —
08 1 1.0–5.0 1.0–7.0 1.0–7.0 1.0–7.0 1.0–7.0 1.0–7.0 1.0–7.0 1.5–7.0 1.0–7.0
2 1.0–5.0 1.0–7.0 1.0–7.0 1.0–7.0 1.5–7.0 2.0–7.0 4.0 — 3.0–7.0
3 1.0–5.0 1.0–7.0 1.0–7.0 1.5–7.0 2.0–7.0 — 6.0 — 4.0–7.0
10 1 1.0–5.0 1.0–9.0 1.0–11.0 1.0–11.0 1.0–11.0 1.0–11.0 1.0–11.0 1.5–11.0 1.0–11.0
2 1.0–5.0 1.0–9.0 1.0–11.0 1.0–11.0 1.0–11.0 1.0–11.0 3.0–11.0 9.0–10.0 2.0–11.0
3 1.0–5.0 1.0–9.0 1.0–11.0 1.5–11.0 1.5–11.0 2.0–11.0 5.0–11.0 — 3.0–11.0
12 1 1.0–5.0 1.0–9.0 1.0–13.0 1.0–16.0 1.0–16.0 1.0–16.0 1.0–16.0 1.5–16.0 1.0–16.0
2 1.0–5.0 1.0–9.0 1.0–13.0 1.0–16.0 1.0–16.0 1.0–16.0 3.0–16.0 3.5–16.0 1.5–16.0
3 1.0–5.0 1.0–9.0 1.0–13.0 1.5–16.0 1.5–16.0 2.0–16.0 4.0–15.0 5.5–16.0 2.5–16.0
14 1 1.0–5.0 1.0–9.0 1.0–13.0 1.0–16.0 1.0–22.0 1.0–16.0 1.0–22.0 1.5–22.0 1.0–22.0
2 1.0–5.0 1.0–9.0 1.0–13.0 1.0–16.0 1.0–22.0 1.0–16.0 2.0–22.0 3.0–22.0 1.5–22.0
3 1.0–5.0 1.0–9.0 1.0–13.0 1.5–16.0 1.5–22.0 2.0–16.0 3.0–20.0 4.5–18.0 2.5–22.0
16 1 1.0–5.0 1.0–9.0 1.0–13.0 1.0–16.0 1.0–22.0 1.0–16.0 1.0–30.0 1.5–30.0 1.0–30.0
2 1.0–5.0 1.0–9.0 1.0–13.0 1.0–16.0 1.0–22.0 1.0–16.0 2.0–30.0 2.5–30.0 1.5–30.0
3 1.0–5.0 1.0–9.0 1.0–13.0 1.5–16.0 1.5–22.0 2.0–16.0 3.0–30.0 4.0–26.0 2.5–30.0
24 x 16 1 1.0–5.0 1.0–9.0 1.0–13.0 1.0–16.0 1.0–22.0 1.0–16.0 1.0–38.0 1.5–46.0 1.0–30.0
2 1.0–5.0 1.0–9.0 1.0–13.0 1.0–16.0 1.0–22.0 1.0–16.0 2.0–38.0 2.5–46.0 1.5–30.0
3 1.0–5.0 1.0–9.0 1.0–13.0 1.5–16.0 1.5–22.0 1.5–16.0 3.0–38.0 3.5–40.0* 2.5–30.0
* 36.0 not available
Notes:
1. Coils available with 24-volt magnetic or mercury contactors, load carrying P.E switches, and P.E. switch with magnetic or mercury contactors.
2. Available kW increments are by 0.5 kW from 1.0 to 8.0 kW, by 1.0 kW from 9.0 to 18.0 kW, and by 2.0 kW from 18.0 to 46.0 kW.
3. Each stage will be equal in kW output.
4. All heaters contain an auto-thermal cutout and a manual-reset cutout.
5. The current amp draw for the heater elements is calculated by the formula below.
6. The maximum allowable kW is based on the largest kW possible per a voltage and the minimum airflow per an inlet size and kW.
Minimum Circuit Ampacity (MCA) Equation
— MCA = heater amps x 1.25
Maximum Overcurrent Protection (MOP) Equation
— MOP = heater amps
— However since MOP ≤ MCA, then choose next fuse greater than MCA.
— Units without electric reheat would use smallest fuse sizing.
— Standard Fuse Sizes: 15, 20, 25, 30, 35, 40, 45, 50, and 60.
Example–For MOP of Single-Duct Unit
A model VCEF, electric reheat unit size 14 has 480/3 phase 15 kW electric reheat with 2 stages.
15 kW – 480/3 heater 15 x 1000 = 18.06
480 x 1.73
MCA = 18.06 x 1.25 = 22.58 amps. Since MOP ≤ MCA, then MOP = 25.
Useful formulas:
Cfm x ATD
kW =
3145
kW = 1214 x L/s x ATD
kW x 1000
3φamps =
Primary Voltage x √ 3
1φamps =
kW x 1000
Primary Voltage
kW x 3145
ATD =
Cfm
ATD =
kW
1214 x L/s
SD 16
VAV-PRC008-EN

Single-Duct
Performance
Data—
Electric Data
Minimum and Maximum Airflow per Inlet Size and kW
√
I-P
SI
I-P
SI
Inlet Min Max Min Max
Inlet Min Max Min Max
Size kW Cfm Cfm L/s L/s
Size kW Cfm Cfm L/s L/s
4 1.0 130 225 61 106
14 1.0–9.0 640 3000 302 1415
5 1.0 125 350 59 165
10.0 720 3000 340 1415
1.5 165 350 78 165
11.0 800 3000 378 1415
2.0 185 350 87 165
12.0 880 3000 415 1415
2.5 205 350 97 165
13.0 960 3000 453 1415
14.0 1040 3000 491 1415
6 1.0 120 500 57 236
15.0 1120 3000 529 1415
1.5 150 500 71 236
16.0 1200 3000 566 1415
2.0 180 500 85 236
17.0 1280 3000 604 1415
2.5 210 500 99 236
18.0 1345 3000 635 1415
3.0 240 500 113 236
20.0 1475 3000 696 1415
3.5 270 500 127 236
22.0 1600 3000 755 1415
4.0 300 500 142 236
16 1.0–12.0 840 4000 396 1886
8 1.0–3.0 210 900 99 425
13.0 910 4000 430 1886
3.5 265 900 125 425
14.0 980 4000 463 1886
4.0 315 900 149 425
15.0 1050 4000 496 1886
4.5 345 900 163 425
16.0 1120 4000 529 1886
5.0 380 900 179 425
17.0 1190 4000 562 1886
5.5 420 900 198 425
18.0 1260 4000 595 1886
6.0 450 900 212 425
20.0 1400 4000 661 1886
6.5 490 900 231 425
22.0 1540 4000 727 1886
7.0 525 900 248 425
24.0 1680 4000 793 1886
10 1.0–4.5 330 1400 156 660
26.0 1820 4000 859 1886
5.0 370 1400 175 660
28.0 1960 4000 925 1886
5.5 410 1400 194 660
30.0 2100 4000 991 1886
6.0 450 1400 212 660
24 x 16 1.0–22.0 1600 8000 755 3772
6.5 495 1400 234 660
24.0 1800 8000 850 3772
7.0 550 1400 260 660
26.0 2000 8000 944 3772
7.5 605 1400 286 660
28.0 2200 8000 1038 3772
8.0 660 1400 312 660
30.0 2400 8000 1133 3772
9.0 710 1400 335 660
32.0 2600 8000 1227 3772
10.0 765 1400 361 660
34.0 2800 8000 1322 3772
11.0 820 1400 387 660
36.0 3000 8000 1416 3772
12 1.0–6.5 470 2000 222 943
38.0 3200 8000 1510 3772
7.0 520 2000 245 943
40.0 3400 8000 1605 3772
7.5 565 2000 267 943
42.0 3600 8000 1699 3772
8.0 615 2000 290 943
44.0 3800 8000 1794 3772
9.0 705 2000 333 943
46.0 4000 8000 1888 3772
10.0 785 2000 371 943
11.0 860 2000 406 943
12.0 940 2000 444 943
13.0 1000 2000 472 943
14.0 1055 2000 498 943
15.0 1115 2000 526 943
16.0 1175 2000 555 943
Note: Minimum and maximum airflow is based on UL listing and certification.
VAV-PRC008-EN
SD 17

Single-Duct
Performance
Data—
Acoustics
Discharge Sound Power (dB)
Discharge Sound Power (dB)
Inlet Fan 0.5" ∆Ps 1.0" ∆Ps 2.0" ∆Ps 3.0"∆Ps
Size Cfm L/s 2 3 4 5 6 7 2 3 4 5 6 7 2 3 4 5 6 7 2 3 4 5 6 7
4 80 38 57 57 45 44 40 37 58 61 52 51 47 46 60 66 60 60 60 56 61 69 66 66 64 61
120 57 60 60 48 48 43 41 64 65 54 53 49 47 64 69 63 60 57 55 65 72 70 68 63 60
150 71 60 60 48 49 45 42 65 66 55 54 51 49 67 72 64 61 58 56 68 72 71 68 64 61
225 106 65 64 53 54 50 49 70 71 60 59 55 54 73 77 67 64 61 59 72 78 72 69 65 63
5 130 61 52 52 44 43 41 38 55 58 51 50 48 47 57 64 60 59 58 55 59 68 68 66 63 60
200 94 55 55 47 47 43 40 59 61 55 53 50 49 62 67 63 61 58 56 61 69 69 67 63 61
250 118 57 57 48 49 44 42 62 63 56 55 52 50 65 69 63 60 58 57 65 71 71 69 63 61
350 165 59 59 53 53 48 47 66 65 58 57 53 53 70 72 66 62 59 58 70 74 72 69 64 63
6 200 94 52 53 45 44 41 38 56 59 54 52 49 47 58 66 63 60 58 55 60 70 71 67 63 60
300 142 56 56 47 48 44 41 59 61 55 53 50 48 63 67 64 61 58 56 64 71 71 69 64 62
400 189 57 56 50 49 44 42 63 63 57 55 51 50 66 69 65 61 58 57 68 72 72 68 63 62
500 236 61 60 54 53 49 47 65 65 60 58 53 53 69 71 68 63 60 59 71 74 72 69 64 63
8 350 165 54 54 47 45 44 40 57 61 53 51 50 53 61 68 61 58 58 60 64 73 70 66 63 61
520 245 56 56 50 48 45 42 59 63 56 53 52 56 64 71 64 61 60 66 66 73 71 66 65 66
700 330 58 57 53 51 48 44 62 64 59 56 53 57 66 71 66 62 61 64 68 74 73 68 66 69
900 425 61 60 56 56 52 49 65 65 61 59 56 57 70 72 68 64 62 65 72 75 73 68 67 68
10 550 260 53 52 52 51 45 40 58 60 57 57 53 48 64 66 64 66 62 58 66 69 69 71 66 62
820 387 56 55 54 51 46 42 61 62 60 60 55 52 66 68 65 66 62 60 69 72 69 70 66 63
1100 519 60 58 57 54 49 46 65 65 63 61 56 53 70 70 67 68 63 60 72 73 72 71 67 64
1400 661 64 61 61 58 53 51 69 66 64 62 57 54 73 72 69 66 63 60 74 75 72 70 67 64
12 800 378 54 52 52 49 47 41 59 59 57 55 55 52 66 67 65 63 63 61 67 69 68 67 67 64
1200 566 56 54 54 50 49 43 62 62 60 57 57 55 68 69 67 63 64 62 72 73 71 68 68 66
1600 755 59 57 58 53 52 46 64 64 62 58 57 56 70 71 69 64 65 63 73 75 73 69 69 66
2000 944 63 60 61 56 56 51 68 67 65 61 60 59 73 73 70 65 65 64 76 75 74 69 69 67
14 1100 519 54 52 51 46 44 39 60 60 57 54 53 51 65 71 66 62 61 59 68 72 71 67 66 63
1600 755 57 55 55 49 46 41 63 61 60 56 54 51 67 70 67 63 62 61 70 75 72 67 67 64
2100 991 60 59 59 52 49 44 65 65 63 57 54 52 69 71 69 64 62 61 72 73 73 68 67 64
3000 1416 66 65 67 57 55 52 71 70 68 61 58 58 76 76 72 66 64 61 77 77 75 70 69 66
16 1400 661 54 52 51 47 46 40 60 60 58 55 55 51 66 71 67 63 63 62 69 75 73 69 67 66
2100 991 57 55 55 51 49 43 63 62 60 57 55 52 68 70 68 64 64 61 70 75 73 70 68 66
2800 1321 61 60 61 54 51 48 66 65 64 58 57 54 69 71 70 65 64 63 72 73 73 70 69 65
4000 1888 68 67 68 63 57 54 71 70 70 63 61 59 75 75 73 68 65 64 77 76 76 72 70 67
24 2700 1274 68 67 61 58 54 50 72 71 67 65 62 58 74 75 73 71 68 65 75 77 76 75 72 69
x 4000 1888 70 70 65 62 58 54 74 75 71 68 65 61 78 79 77 75 72 68 79 81 80 78 76 72
16 5300 2501 69 70 67 64 61 58 75 76 75 71 67 63 78 82 81 78 74 70 81 84 84 81 78 74
6000 2832 68 70 68 65 62 60 75 76 76 72 68 65 79 82 83 79 75 71 81 85 86 82 79 75
7500 3540 67 70 70 67 63 63 76 76 77 73 70 68 80 83 88 81 76 73 82 86 90 84 80 76
8000 3776 67 70 71 68 64 64 76 76 78 74 71 69 80 83 89 82 77 74 82 86 91 85 81 77
Notes:
1. All data are measured in accordance with current Industry Standard ARI 880, version 1998.
2. All sound power levels, dB re: 10-12 watts.
3. Where ∆Ps is inlet static pressure minus discharge static pressure.
SD 18
VAV-PRC008-EN

Single-Duct
Performance
Data—
Acoustics
Radiated Sound Power (dB)
Radiated Sound Power (dB)
Inlet 0.5" ∆Ps 1.0" ∆Ps 2.0"∆Ps 3.0" ∆Ps
Size Cfm L/s 2 3 4 5 6 7 2 3 4 5 6 7 2 3 4 5 6 7 2 3 4 5 6 7
4 80 38 48 45 40 33 31 23 48 47 43 37 34 25 48 51 53 47 43 35 46 52 60 54 48 42
120 57 47 45 40 33 30 23 49 48 45 38 34 27 50 51 54 46 42 36 51 54 60 52 47 42
150 71 47 45 41 35 30 24 51 49 46 39 35 28 52 53 55 47 43 37 51 56 61 53 48 42
225 106 52 49 44 40 35 30 57 54 49 43 39 33 60 59 57 48 45 39 59 61 63 54 49 44
5 130 61 47 44 35 29 24 21 48 45 41 35 30 25 48 48 50 45 39 33 48 51 58 51 45 40
200 94 48 45 38 32 25 22 49 47 43 37 32 26 50 52 52 45 39 35 50 55 58 51 45 40
250 118 48 44 40 34 27 23 50 48 45 38 33 27 52 53 53 44 40 35 53 56 60 52 44 40
350 165 51 47 44 38 31 26 55 51 47 41 35 31 59 56 55 47 41 37 56 58 60 51 44 40
6 200 94 52 46 38 31 25 22 50 47 43 36 31 26 52 51 52 43 38 33 51 55 59 50 44 40
300 142 52 48 41 33 25 22 55 50 46 38 32 27 56 53 53 44 38 35 57 57 60 50 44 39
400 189 55 49 44 36 28 24 56 53 48 40 33 28 59 56 55 46 40 35 59 58 60 50 43 40
500 236 55 49 47 40 32 27 59 54 51 43 36 31 62 59 57 47 41 36 63 60 61 52 44 40
8 350 165 46 42 38 31 27 22 48 45 43 36 35 27 54 52 53 42 41 36 56 58 64 52 46 42
520 245 49 43 41 35 31 24 51 48 47 39 37 29 55 54 54 45 43 38 56 57 63 51 47 44
700 330 50 46 44 38 34 26 54 51 50 42 38 34 58 57 57 48 45 39 60 59 62 52 48 44
900 425 56 49 50 44 37 29 59 53 53 46 41 35 62 59 57 49 46 39 63 61 62 53 49 44
10 550 260 48 44 42 32 25 24 52 49 48 40 31 26 55 55 53 47 39 32 58 58 59 50 44 38
820 387 53 47 43 36 28 25 57 52 49 41 33 27 60 58 55 48 40 33 62 61 60 52 44 38
1100 519 58 50 46 39 30 27 61 55 51 43 35 29 64 61 57 50 42 35 67 63 61 53 45 39
1400 661 62 53 49 42 34 30 66 58 54 46 38 33 69 63 58 51 43 37 71 65 63 55 46 41
12 800 378 49 46 40 33 27 27 54 51 46 39 34 29 58 58 53 46 42 35 59 62 59 51 47 40
1200 566 54 48 43 35 29 27 59 54 48 41 35 30 64 61 55 48 43 37 66 64 60 52 47 42
1600 755 60 53 47 38 32 30 63 58 50 42 37 32 68 64 57 49 43 39 71 66 61 53 48 43
2000 944 63 58 52 42 37 34 67 62 54 45 40 38 72 68 58 50 45 42 75 68 61 54 50 45
14 1100 519 47 46 36 30 24 23 53 53 42 36 32 27 57 61 52 43 40 35 60 64 60 48 43 38
1600 755 52 49 39 32 24 23 56 54 45 38 32 26 60 63 52 44 39 35 63 67 60 49 43 40
2100 991 55 52 43 35 27 25 59 57 48 40 33 28 63 64 55 46 40 36 65 67 61 50 44 40
3000 1416 63 59 51 42 34 31 65 64 54 44 36 34 68 68 57 48 41 37 69 69 60 52 45 41
16 1400 661 50 47 38 32 26 23 54 54 45 40 35 29 60 62 53 47 43 38 63 66 61 52 47 43
2100 991 51 49 41 35 28 24 56 54 47 41 36 30 61 61 55 49 44 39 64 66 60 53 48 43
2800 1321 56 54 45 38 31 27 59 56 49 43 37 32 62 62 56 49 44 39 65 65 61 54 49 44
4000 1888 61 60 55 45 38 32 63 63 56 47 41 36 67 66 59 51 46 41 69 66 62 55 50 45
24 2700 1274 65 63 53 45 38 30 70 65 60 52 45 37 71 69 66 59 51 45 72 71 69 62 54 50
x 4000 1888 67 67 57 48 40 32 71 71 64 55 48 41 74 75 69 61 54 48 76 77 72 65 58 52
16 5300 2501 67 66 58 49 42 35 74 75 69 57 49 42 76 77 74 64 56 50 78 79 76 67 60 53
6000 2832 68 66 59 51 44 37 74 75 69 58 50 43 77 78 75 65 57 51 79 80 77 68 61 54
7500 3540 69 67 61 54 48 42 75 74 70 59 51 45 78 80 78 66 58 52 80 81 79 69 62 55
8000 3776 69 67 62 55 49 44 75 74 70 59 52 46 79 81 79 67 59 52 80 82 80 70 63 56
Notes:
1. All data are measured in accordance with current Industry Standard ARI 880, version 1998.
2. All sound power levels, dB re: 10 -12 watts.
3. Where ∆Ps is inlet static pressure minus discharge static pressure.
VAV-PRC008-EN
SD 19

Single-Duct
Performance
Data—
Acoustics
Sound Noise Criteria (NC)
Discharge
Radiated
Inlet Pressure (∆Ps)
Inlet Pressure (∆Ps)
Inlet 0.5" 1.0" 2.0" 3.0" 0.5" 1.0" 2.0" 3.0"
Size Cfm L/s (127 Pa) (254 Pa) (508 Pa) (762 Pa) (127 Pa) (254 Pa) (508 Pa) (762 Pa)
4 80 38 15 20 26 30 — 16 27 35
120 57 19 25 30 34 — 19 29 35
150 71 19 26 34 34 — 20 30 36
225 106 24 32 39 40 17 23 32 38
5 130 61 — 16 24 29 — 15 24 33
200 94 — 20 27 30 — 16 26 33
250 118 15 22 30 32 — 19 27 35
350 165 17 25 34 36 17 21 30 35
6 200 94 — 17 26 31 — 16 26 34
300 142 — 20 27 32 15 20 27 35
400 189 — 22 30 34 17 22 30 35
500 236 19 25 32 36 21 25 32 36
8 350 165 — 17 27 34 — 16 27 39
520 245 — 21 31 34 — 21 29 38
700 330 — 22 31 35 17 24 32 37
900 425 17 24 32 36 24 27 32 37
10 550 260 — 16 24 27 15 22 27 34
820 387 — 19 26 31 16 23 30 35
1100 519 — 22 29 32 20 25 32 36
1400 661 17 24 31 35 25 30 34 38
12 800 378 — 16 25 27 — 20 27 34
1200 566 — 19 27 32 16 22 31 35
1600 755 — 21 30 35 22 27 35 37
2000 944 16 25 32 35 27 32 39 41
14 1100 519 — 16 30 31 — 21 31 35
1600 755 — 17 29 35 16 22 34 38
2100 991 15 22 30 32 20 26 35 38
3000 1416 22 29 36 37 29 35 39 40
16 1400 661 — 16 30 35 — 22 32 37
2100 991 — 19 29 35 16 22 31 37
2800 1321 16 22 30 32 22 25 32 36
4000 1888 25 29 35 36 30 34 37 37
24 2700 1274 25 30 35 37 34 36 41 45
x 4000 1888 29 35 39 41 38 42 47 50
16 5500 2501 29 36 42 45 37 47 50 52
6000 2832 29 36 42 46 37 47 51 54
7500 3540 29 36 44 47 38 46 55 56
8000 3776 29 36 44 47 38 46 56 57
Notes:
1. “—” represents NC levels below NC 15.
2. NC Values are calculated using current Industry Standard ARI 885, 2002 addendum to revision 1998. Radiated Transfer Function
obtained from Appendix E, Type 2 Mineral Fiber Insulation.
3. Where ∆Ps is inlet static pressure minus discharge static pressure.
ARI 885-98 DISCHARGE TRANSFER FUNCTION ASSUMPTIONS:
Octave Band
2 3 4 5 6 7
Small Box (< 300 cfm) -24 -28 -39 -53 -59 -40
Medium Box (300-700 cfm) -27 -29 -40 -51 -53 -39
Large Box (> 700 cfm) -29 -30 -41 -51 -52 -39
Note: Add to terminal unit sound power to determine discharge sound
pressure in the space.
ARI 885-98 RADIATED TRANSFER FUNCTION ASSUMPTIONS:
Octave Band
2 3 4 5 6 7
Type 1 – Glass Fiber -19 -19 -21 -25 -29 -35
Type 2 – Mineral Fiber Insulation -18 -19 -20 -26 -31 -36
Type 3 – Solid Gypsum Board -23 -26 -25 -27 -27 -28
Note: Select the ceiling type which most closely represents the
application. Next, add to terminal unit sound power to determine radiated
sound pressure in the space.
SD 20
VAV-PRC008-EN

Single-Duct
Performance
Data—
Acoustics
Discharge Sound Power (dB)
ARI Conditions
Inlet
1.5" Inlet Pressure (381 Pa)
Size Cfm L/s 2 3 4 5 6 7
4 150 71 67 70 60 58 55 53
5 250 118 63 66 60 57 55 54
6 400 189 65 67 62 59 56 55
8 700 330 64 68 62 59 58 60
10 1100 519 69 68 66 66 61 57
12 1600 755 68 69 66 61 62 60
14 2100 991 68 68 66 61 59 58
16 2800 1321 69 68 67 62 61 60
24x16 5300 2501 77 79 78 75 71 68
Radiated Sound Power (dB)
ARI Conditions
Inlet
1.5" Inlet Pressure (381 Pa)
Size Cfm L/s 2 3 4 5 6 7
4 150 71 52 52 50 43 39 33
5 250 118 52 50 49 42 37 31
6 400 189 58 54 51 43 37 32
8 700 330 57 54 53 45 42 36
10 1100 519 63 59 54 47 39 32
12 1600 755 66 62 54 46 40 36
14 2100 991 61 61 51 43 37 32
16 2800 1321 60 60 53 46 41 36
24x16 5300 2501 75 76 72 61 53 46
Notes:
1. All sound data rated in accordance with current Industry Standard
ARI 880, version 1998.
2. All sound power levels, dB re: 10 -12 watts.
VAV-PRC008-EN
SD 21

Single-Duct
Dimensional
Data
SINGLE-DUCT COOLING ONLY WITH OPTIONAL OUTLET PLENUM (VCCF)
VALV
04
05
06
08
10
12
14
16
CFM
225
350
500
900
1400
2000
3000
4000
L/s
106
165
236
425
661
994
1416
1888
INLET SIZE
(NOMINAL Ø)
L
H
W
D
C
4" (104 mm) 11.50" (292 mm) 9.50" [241 mm] 11.50" (292 mm) 5.00" (127 mm)
5" (127 mm)
6" (152 mm)
8" (203 mm) 11.00" (279 mm) 11.50" [292 mm] 12.50" (318 mm) 5.50" (140 mm)
10" (254 mm) 12.00" (305 mm) 13.50" [343 mm] 15.50" (394 mm) 5.00" (127 mm)
12" (305 mm) 13.00" (330 mm) 15.50" [394 mm] 18.50" (470 mm) 4.50" (114 mm)
14" (356 mm)
16" (406 mm)
14.00" (356 mm)
15.00" (381 mm)
19.50" [495 mm] 20.50" (521 mm)
24.50" (622 mm) 3.50" (89 mm)
DISCHARGE DIM W/O OUTLET PLENUM
Z
A (h)
B (w)
E
2.75" (70 mm) 8.00" (203 mm) 9.85" (250 mm) 11.50" (292 mm)
2.25" (57 mm) 10.00" (254 mm) 11.00" (279 mm)
2.75" (70 mm) 12.00" (305 mm) 14.00" (356 mm) 14.00" (356 mm)
3.25" (83 mm) 14.00" (356 mm) 17.00" (432 mm) 14.00" (356 mm)
4.25" (108 mm)
18.00" (457 mm) 19.00" (483 mm)
23.00" (584 mm)
NA
NA
WT
LBS
(KGS)
21 (9.5)
22 (10)
30 (14)
38 (17)
46 (21)
51 (23)
24RT 8000
3776
24" x 16" 18.00" (457 mm)
(610 mm x 406 mm)
28.50" (724 mm)
5.55" (141 mm)
2.25" (57 mm)
27.00" (686 mm)
NA
70 (32)
CONTROL BOX
ANALOG OR DDC/UCM
(PNEU. CONTROLS AREA)
6.50"
(165 mm)
ACTUATOR
FLOW RING
TUBING
Z
C
AIRFLOW
AIR
VALVE
4.00"
[102mm]
L
SIZE 04 & 05
5.75" (146 mm)
OUTL CONVERSION CHART
SYMBOL NOMINALØ
I 5" (127 mm)
II 6" (152 mm)
III 8" (203 mm)
IV 10" (254 mm)
OUTLET AVAILABILITY CHART - SEE OUTL CONVERSION FOR NOMINALØ
OUTL
VALV
A,B,C
D,E,F
H
J
4 5
6
8 10 12
I, II I, II I, II III III, IV IV
I, II I, II I, II I, II, III II, III, IV III, IV
I, II I, II I, II I, II, III II, III, IV III, IV
N/A N/A N/A N/A
I
I, II
SLIP & DRIVE
CONNECTION
DISCHARGE
DIMENSIONS (BxA)
TOP VIEW
D
AIRFLOW
ARRANGEMENT "H"
1.50" (38 mm) FLANGE
E
1.00"
(25.4 mm)
5.50"
(140 mm)
W
8.25"
(210 mm)
BACK VIEW
H
NOTES:
1. Air inlet centered in unit front panel.
2. Outlet combinations to remote diffusers have
optional integral balancing dampers. (See
specification sheet.)
3. Outlet connections are centered in plenum panel.
4. Plenum not available with size 14 & 16 units.
5. Minimum of 1.5 duct diamenters of straight duct
required at inlet for proper flow reading.
6. Allow 12" (305 mm) on control side for servicing.
SD 22
A B C D E F H J
OUTLET PLENUM
ARRANGEMENTS
(TOP VIEW)
7. Weights are an estimation and will vary based on
selected options, insulation type, etc.
8. Unit is field convertible from a left-hand connection
(shown) to right-hand by rotating unit.
VAV-PRC008-EN

Single-Duct
Dimensional
Data
SINGLE-DUCT HOT WATER WITH OPTIONAL OUTLET PLENUM (VCWF)
VALV CFM L/s
INLET SIZE
DISCHARGE DIM W/O OUTLET PLENUM
(NOMINAL Ø)
L
H
W
D
Z
C
A (h)
B (w)
E
04 225 106 4" (104 mm) 11.50" (292 mm) 9.50" (241 mm) 11.50" (292 mm) 5.00" (127 mm) 2.75" (70 mm) 8.00" (203 mm) 10.00" (254 mm) 11.50" (292 mm)
05
06
08
350
500
900
165
236
425
5" (127 mm)
6" (152 mm)
8" (203 mm) 11.00" (279 mm) 11.50" (292 mm) 12.50" (318 mm) 5.50" (140 mm) 2.25" (57 mm) 10.00" (254 mm) 11.00" (279 mm)
10 1400 661 10" (254mm) 12.00" (305 mm) 13.50" (343 mm) 15.50" (394 mm) 5.00" (127 mm) 2.75" (70 mm) 12.00" (305 mm) 14.00" (356 mm) 14.00" (356 mm)
12 2000 994 12" (305 mm) 13.00" (330 mm) 15.50" (394 mm) 18.50" (470 mm) 4.50" (114 mm) 3.25" (83 mm) 14.00" (356 mm) 17.00" (432 mm) 14.00" (356 mm)
14 3000 1416 14" (356 mm) 14.00" (356 mm) 19.50" (495 mm) 20.50" (521 mm)
18.00" (457 mm) 19.00" (483 mm) NA
16 4000 1888 16" (406 mm) 15.00" (381 mm)
24.50" (622 mm) 3.50" (89 mm) 4.25" (108 mm)
23.00" (584 mm) NA
24RT 8000 3776
24" x 16"
18.00" (457 mm)
(610 mm x 406 mm)
28.50" (724 mm) 5.55" (141 mm) 2.25" (57 mm)
27.00" (686 mm) NA
WT
LBS
(KGS)
27 (12)
30 (14)
40 (18)
51 (23)
62 (28)
71 (32)
95 (43)
CONTROL BOX
ANALOG OR DDC/UCM
(PNEU. CONTROLS AREA)
6.50"
(165 mm)
ACTUATOR
FLOW RING
TUBING
Z
C
AIRFLOW
AIR
VALVE
4.00"
(102 mm)
L
SIZE 04 & 05
5.75" (146 mm)
OUTL CONVERSION CHART
SYMBOL
I
II
III
IV
NOMINALØ
5" (127 mm)
6" (152 mm)
8" (203 mm)
10" (254 mm)
OUTLET AVAILABILITY CHART - SEE OUTL CONVERSION FOR NOMINALØ
VALV
4 5
6
8 10 12
A,B,C I, II I, II I, II III III, IV IV
D,E,F I, II I, II I, II I, II, III II, III, IV III, IV
OUTL
H I, II I, II I, II I, II, III II, III, IV III, IV
J N/A N/A N/A N/A
I
I, II
D
SLIP & DRIVE
CONNECTION
WATER
COIL
04, 05, 06 – 7.70" (196 mm)
all others – 7.40" (188 mm)
DISCHARGE
DIMENSIONS (BxA)
AIR FLOW
E
TOP VIEW
ARRANGEMENT "H"
1.50" (38 mm) FLANGE
COIL ACCESS
76 mm x 178 mm
(3.00" x 7.00")
5.50"
(140 mm)
W
NOTES:
1. Air inlet is centered in unit front panel.
8.25
(210 mm)
BACK VIEW
H
2. Outlet combinations to remote diffusers have
optional integral balancing dampers (See
specification sheet.)
3. Outlet connections are centerd in plenum panel.
4. Plenum not available with sizes 14 & 16 units.
5. Minimum of 1.5 duct diameters of straight duct
required for proper flow reading.
6. Allow 12" (305 mm) on control side for servicing.
A B C D
E
F
H
J
7. Weights are an estimation and will vary based
on selected options, insulation type, etc.
OUTLET PLENUM
ARRANGEMENTS
(TOP VIEW)
8. Coil furnished with stub sweat connections.
Handedness of coil connections is determined
by facing air stream.
9. Coils are provided without internal insulation. If
the unit is to be installed in a location with high
humidity, external insulation around the heating
coil should be installed as required.
VAV-PRC008-EN
10. Unit is field convertible from a left-hand connection
(shown) to right-hand by rotating unit.
SD 23

Single-Duct
Dimensional
Data
COIL INFORMATION FOR 1-ROW COIL
VALV
04
05
06
08
10
12
14
16
24 x 16
CFM
LITERS
per
SECOND
COIL
CONNECTION
A
225 106 3 / 8 " (10 mm) O.D. SEE 7" (178 mm)
21 / 32"
(17 mm) 1 / 2"
(13 mm) 8" (203 mm)
350 165 / 8 " (10 mm) O.D. (FIG 1) 7" (178 mm) / 32"
(17 mm)
(13 mm) 8" (203 mm)
500 236 8 " (10 mm) O.D.
7" (178 mm)
" (17 mm)
"
900 425 3 / 8 " (10 mm) O.D.
9" (229 mm)
(22 mm) 7 / "
10"
1400 661
3 / 8 " (10 mm) O.D.
11" (279 mm)
7 / 8 (22 mm) 7 / " (11 mm) 12 " (305 mm)
2000 994 7 / 8 " (22 mm) O.D. SEE 9 (248 mm) " (64 mm)
" (53 mm) 14" (356 mm)
3000 1416 8 " (22 mm) O.D. (FIG 2)
(400 mm) "
"
"
4000 1888 7 / " (22 mm) O.D.
15 (400 mm) " (38 mm)
" (27 mm) 18 "
8000 3776 7 / 8 " (22 mm) O.D.
15 / 4" (400 mm) 1 1 / " (38 mm) 1 1 / " (27 mm) 18 " (457 mm)
B
C
D
E
10" (254 mm)
10" (254 mm)
10" (254 mm)
11"
14"
(279 mm)
(356 mm)
17" (432 mm)
19" (482 mm)
23" (584 mm)
27" (686 mm)
E
E
CUSTOMER NOTES:
1.
Location of coil connections is determined by facing air stream.
L.H. and R.H. coil connections are available (L.H. shown).
Coils can be field rotated 180˚ for opposite connections.
2. Coil furnished with stub sweat connections.
3. Use port at bottom for inlet and port at top for outlet.
4.
Coil height and width is dependent upon unit height
and width.
5.
6.
Access Panel is standard and found on connection side.
Water coil discharge dimensions located on VCWF
dimension page.
AIR FLOW
(FIG 1)
AIR FLOW
(FIG 2)
13
3 "
/ 32
A
C
13
3 / " 32
(86 mm)
9
1 / "
64
(29 mm)
OUTLET
OUTLET
C
AIR FLOW
D
13
7 / " 16
(198 mm)
AIR FLOW
D
13
7 / "
16
(198 mm)
A
INLET
B
INLET
8 1 / 4 "
(210 mm)
1 3/ 4 "
(44 mm)
8 1 / "
(210 mm)
2 1/ 4 "
(57 mm)
B
SD 24
(FIG 1)
(FIG 2)
VAV-PRC008-EN

Single-Duct
Dimensional
Data
COIL INFORMATION FOR 2-ROW COIL
VALV
04
05
06
08
10
12
14
16
24 x 16
LITERS
CFM per
SECOND
225 106
350
500
165
236
900 425
1400 661
2000 994
3000 1416
4000 1888
8000 3776
7 / 8 "
/ 8 "
COIL
CONNECTION
(10 mm) O.D.
(10 mm) O.D.
(10 mm) O.D.
(22 mm) O.D.
(22 mm) O.D.
(22 mm) O.D.
(22 mm) O.D.
(22 mm) O.D.
(22 mm) O.D.
SEE
(FIG 1)
SEE
(FIG 2)
A
" (191 mm)
"
" (210 mm)
" (260 mm)
" (311 mm)
"
1/
4 " (413 mm)
16 / 4 " (413 mm)
18 / 8
B
(206 mm)
(257 mm)
(308 mm)
(359 mm)
(460 mm)
(460 mm)
(460 mm)
C
10" (254 mm)
10" (254 mm)
10" (254 mm)
11" (279 mm)
14" (356 mm)
17" (432 mm)
19" (482 mm)
23" (584 mm)
27" (686 mm)
CUSTOMER NOTES:
1.
Location of coil connections is determined by facing air stream.
L.H. and R.H. coil connections are available (L.H. shown).
Coils can be field rotated 180˚ for opposite connections.
2. Coil furnished with stub sweat connections.
3. Use port at bottom for inlet and port at top for outlet.
4.
5.
6.
Coil height and width is dependent upon unit height
and width.
Access Panel is standard and found on connection side.
Water coil discharge dimensions located on VCWF
dimension page.
C
C
AIR FLOW
(FIG 1)
AIR FLOW
(FIG 2)
AIR FLOW
B
7 13 / 32"
(198 mm)
3 13 / 32"
(86 mm)
19/ 64
"
23/ 64 "
(9 mm)
3 13 / 32
"
7 / 16 "
(11 mm)
OUTLET
OUTLET
A
7 32
AIR FLOW B
13 / "
(198 mm)
INLET
23 / 64 "
(9 mm)
/ "
2 1 2
A
11/ 16"
(27 mm)
1"
(25 mm)
8 1 / 4 "
(210 mm)
3 7 / 64 "
(79 mm)
8 1 / 4 "
(210 mm)
VAV-PRC008-EN
(FIG 1) (FIG 2)
SD 25

Single-Duct
Dimensional
Data
SINGLE-DUCT ELECTRIC HEAT (VCEF)
VALV
04
05
CFM
225
350
LITERS
per
SECOND
106
165
INLET SIZE
(NOMINAL Ø)
C
4" (104 mm)
5" (127 mm)
L
45.50" (1156 mm)
H
9.50" (241 mm)
W
16.00" (406 mm)
D
5.50" (140 mm)
DISCHARGE DIMENSIONS
A
B
8.00" (203 mm) 10.00" (254 mm)
WT
LBS/KGS
63 (29)
06
500
236
6" (152 mm)
08
10
12
14
16
900
1400
2000
3000
4000
425
661
994
1416
1888
8" (203 mm)
10" (254 mm)
12" (305 mm)
14" (356 mm)
16" (406 mm)
43.50" (1105 mm)
11.50" (292 mm)
13.50" (343 mm)
15.50" (394 mm)
19.50" (495 mm)
17.00" (432 mm)
20.00" (508 mm)
23.00" (584 mm)
25.00" (635 mm)
29.00" (737 mm)
5.00" (127 mm)
4.50" (114 mm)
3.50" (89 mm)
10.00" (254 mm)
12.00" (305 mm)
14.00" (356 mm)
18.00" (457 mm)
11.00" (279 mm)
14.00" (356 mm)
17.00" (432 mm)
19.00" (483 mm)
23.00" (584 mm)
67 (30)
81 (37)
93 (42)
108 (49)
121 (55)
24RT 8000
3776
24" x 16"
(610 mm x 406 mm)
33.00" (838 mm)
5.55" (141 mm)
27.00" (686 mm)
135 (61)
CONTROL BOX
ELECTRIC OR DDC/UCM
(PNEU. CONTROLS AREA)
C
AIRFLOW
SIZE 04 & 05
5.75" (146 mm)
ELECTRIC HEATER
CONTROL AREA
FLOW RING
TUBING
AIR
VALVE
4.00"
(102 mm)
6.50"
(165 mm")
ACTUATOR
D
L
TOP VIEW
SLIP & DRIVE
CONNECTION
W
AIRFLOW
5.50"
(140 mm)
B
CUSTOMER NOTES:
8.25"
(210 mm)
A
H
1. Air inlet is centered in unit front panel.
2. Slip and Drive discharge outlet standard.
BACK VIEW
3. 1.5 times duct diameter of straight duct at inlet for
proper flow reading.
4. For electric heater access, side hinged door must have
minimum distance per NEC or local code.
5. Allow 48" (1219 mm) of straight duct downstream of
unit before first runout & inside of the duct should be
equal discharge size (A & B).
6. Left-hand unit shown. Opposite hand available. (Moves
all components to the other side of the unit.)
SD 26
VAV-PRC008-EN

Single-Duct
Dimensional
Data
SINGLE-DUCT ELECTRIC HEAT (VCEF) RIGHT-HAND
VALV
04
05
06
08
10
12
14
16
CFM
225
350
500
900
1400
2000
3000
4000
LITERS
per
SECOND
106
165
236
425
661
994
1416
1888
INLET SIZE
(NOMINAL Ø)
C
4" (104 mm)
5" (127 mm)
6" (152 mm)
8" (203 mm)
10" (254 mm)
12" (305 mm)
14" (356 mm)
16" (406 mm)
L
45.50" (1156 mm)
43.50" (1105 mm)
H
9.50" (241 mm)
11.50" (292 mm)
13.50" (343 mm)
15.50" (394 mm)
19.50" (495 mm)
W
16.00" (406 mm)
17.00" (432 mm)
20.00" (508 mm)
23.00" (584 mm)
25.00" (635 mm)
29.00" (737 mm)
D
5.50" (140 mm)
5.00" (127 mm)
4.50" (114 mm)
3.50" (89 mm)
DISCHARGE DIMENSIONS
A
B
8.00" (203 mm) 10.00" (254 mm)
10.00" (254 mm) 11.00" (279 mm)
12.00" (305 mm) 14.00" (356 mm)
14.00" (356 mm) 17.00" (432 mm)
18.00" (457 mm) 19.00" (483 mm)
23.00" (584 mm)
WT
LBS/KGS
63 (29)
67 (30)
81 (37)
93 (42)
108 (49)
121 (55)
24RT 8000
3776
24" x 16"
(610 mm x 406 mm)
33.00" (838 mm)
5.55" (141 mm)
27.00" (686 mm)
135 (61)
SIZE 04 & 05
5.75" (146 mm)
C
AIRFLOW
CONTROL BOX
ELECTRIC OR DDC/UCM
(PNEU. CONTROLS AREA)
ELECTRIC HEATER
CONTROL AREA
4.00"
(102 mm)
AIR
VALVE
FLOW RING
TUBING
6.50"
(165 mm")
ACTUATOR
L
D
TOP VIEW
AIRFLOW
DISCHARGE OUTLET
W
SLIP & DRIVE
CONNECTION
B
5.50"
(140 mm)
CUSTOMER NOTES:
1. Air inlet is centered in unit front panel.
2. Slip & Drive discharge outlet standard.
3. 1.5 times duct diameter of straight duct at inlet.
H
A
8.25"
(210 mm)
4. For electric heater access, side hinged door must have
minimum distance per NEC or local code for proper
flow reading.
BACK VIEW
5. Allow 48" (1219 mm) of straight duct downstream of
unit before first runout & inside of the duct should be
equal discharge size (A & B)
VAV-PRC008-EN
SD 27

Single-Duct
Mechanical
Specifications
MODELS VCCF, VCWF
and VCEF
Single-duct terminal units.
VCCF – Cooling Only
VCWF – With Hot Water Coil
VCEF – With Electric Coil
CASING
22-gage galvanized steel.
AGENCY LISTING
The unit is UL and Canadian UL Listed
as a room air terminal unit. Control #
9N65.
ARI 880 Certified.
INSULATION
1/2" (12.7 mm) Matte-faced
Insulation—The interior surface of
the unit casing is acoustically and
thermally lined with ½-inch, 1.5 lb/ft 3
(12.7 mm, 24.0 kg/m 3 ) composite
density glass fiber with a high-density
facing. The insulation R-Value is 1.9. The
insulation is UL listed and meets NFPA-
90A and UL 181 standards. There are
no exposed edges of insulation
(complete metal encapsulation).
1" (25.4 mm) Matte-faced
Insulation—The interior surface of
the unit casing is acoustically and
thermally lined with 1-inch, 1.0 lb/ft 3
(25.4 mm, 16.0 kg/m 3 ) composite
density glass fiber with a high-density
facing. The insulation R-Value is 3.85.
The insulation is UL listed and meets
NFPA-90A and UL 181 standards. There
are no exposed edges of insulation
(complete metal encapsulation).
1/2" (12.7 mm) Foil-faced
Insulation—The interior surface of
the unit casing is acoustically and
thermally lined with ½-inch, 1.5 lb/ft 3
(12.7 mm, 24.0 kg/m 3 ) density glass
fiber with foil facing. The insulation
R-Value is 2.1. The insulation is UL
listed and meets NFPA-90A and UL 181
standards as well as bacteriological
standard ASTM C 665. There are no
exposed edges of insulation (complete
metal encapsulation).
1" (25.4 mm) Foil-faced
Insulation—The interior surface of the
unit casing is acoustically and
thermally lined with 1-inch, 1.5 lb/ft 3
(25.4 mm, 24.0 kg/m 3 ) density glass
fiber with foil facing. The insulation
R-Value is 4.1. The insulation is UL
listed and meets NFPA-90A and UL 181
standards as well as bacteriological
standard ASTM C 665. There are no
SD 28
exposed edges of insulation (complete
metal encapsulation).
1" (25.4 mm) Double-wall
Insulation—The interior surface of the
unit casing is acoustically and
thermally lined with a 1-inch, 1.0 lb./ft 3
(25.4 mm, 16.0 kg/m 3 ) composite
density glass fiber with high-density
facing. The insulation R-value is 3.8. The
insulation is UL listed and meets
NFPA-90A and UL 181 standards. The
insulation is covered by an interior
liner made of 26-gage galvanized steel.
All wire penetrations are covered by
grommets. There are no exposed
edges of insulation (complete metal
encapsulation).
3/8" (9.5 mm) Closed-cell
Insulation—The interior surface of the
unit casing is acoustically and
thermally lined with 3/8-inch, 4.4 lb/ft 3
(9.5 mm, 70.0 kg/m 3 ) closed-cell
insulation. The insulation is UL listed
and meets NFPA-90A and UL 181
standards. The insulation has an
R-Value of 1.4. There are no exposed
edges of insulation (complete metal
encapsulation).
PRIMARY AIR VALVE
Air Valve Round—The primary air
inlet connection is an 18-gage
galvanized steel cylinder sized to fit
standard round duct. A multiple-point,
averaging flow sensing ring is
provided with balancing taps for
measuring +/-5% of unit cataloged
airflow. An airflow-versus-pressure
differential calibration chart is provided.
The damper blade is constructed of a
closed-cell foam seal that is
mechanically locked between two
22-gage galvanized steel disks. The
damper blade assembly is connected
to a cast zinc shaft supported by selflubricating
bearings. The shaft is cast
with a damper position indicator. The
valve assembly includes a mechanical
stop to prevent over-stroking. At 4.0 in.
wg, air valve leakage does not exceed
1% of cataloged airflow.
Air Valve Rectangular—Inlet collar is
constructed of 22-gage galvanized steel
sized to fit standard rectangular duct.
An integral multiple-point, averaging
flow-sensing ring provides primary
airflow measurement within +/-5% of
unit cataloged airflow. Damper is
22-gage galvanized steel. The damper
blade assembly is connected to a cast
zinc shaft supported by self-lubricating
bearings. The shaft is cast with a
damper position indicator. The valve
assembly includes a mechanical stop
to prevent over-stroking. At 3.0 in. wg
air valve leakage does not exceed
6% of maximum airflow.
Air Valve Combinations Available:
Air Valve Size Maximum Cataloged Airflow
in. (mm)
cfm (L/s)
04 (102) 225 (106)
05 (127) 350 (165)
06 (152) 500 (236)
08 (203) 900 (425)
10 (254) 1400 (660)
12 (305) 2000 (943)
14 (356) 3000 (1415)
16 (406) 4000 (1886)
24 RT–24x16 (610x406) 8000 (3773)
OUTLET CONNECTION
Slip & Drive Connection—Terminal
units come standard with slip & drive
connection.
Outlet Plenum—A sheet metal,
insulated box with circular opening(s)
is attached to the discharge of the
main unit at the factory. The circular
opening(s) are centered on the unit
plenum to accept round ductwork
connections.
Outlet Plenum with Balancing
Dampers—A sheet metal, insulated
box with circular opening(s) is factoryconnected
to the main unit. The
circular opening(s) with balancing
damper(s) are centered on the unit
plenum to accept round ductwork
connections.
HOT WATER COILS
1-Row Hot Water Coils—The 1-row
hot water reheat coil is factory-installed
on the discharge outlet. The coil has
144 aluminum-plated fins per foot. Full
fin collars provided for accurate fin
spacing and maximum fin-tube
contact. The 3/8" (9.5 mm) OD
seamless copper tubes are
mechanically expanded into the fin
collars. Coils are proof tested at
450 psig (3102 kPa) and leak tested at
300 psig (2068 kPa) air pressure under
water. Coil connections are left-hand.
Right-hand connections are optional.
2-Row Hot Water Coils—The 2-row
hot water reheat coil is factory-installed
on the discharge outlet. The coil has
144 aluminum-plated fins per foot. Full
fin collars provided for accurate fin
spacing and maximum fin-tube
contact. The 3/8" (9.5 mm) OD seamless
copper tubes are mechanically
expanded into the fin collars. Coils are
proof tested at 450 psig (3102 kPa) and
leak tested at 300 psig (2068 kPa) air
pressure under water. Coils are
assembled with headers that provide
VAV-PRC008-EN

Single-Duct
Mechanical
Specifications
7/8" (22.2 mm) OD braze connections.
Right-hand connections are optional.
ELECTRIC HEAT COIL
The electric heater is a factory-provided
and -installed, UL recognized
resistance open-type heater with
airflow switch. It also contains a disctype
automatic pilot duty thermal
primary cutout, and manual reset load
carrying thermal secondary device.
Heater element material is nickelchromium.
The heater terminal box is
provided with 7/8" (22 mm) knockouts
for customer power supply. Terminal
connections are plated steel with
ceramic insulators. Heater control
access is on the left-hand side.
ELECTRIC HEAT OPTIONS
Electric Heat Transformer—An
optional transformer is an integral
component of the heater control panel
(dependent on unit load requirements)
to provide 24 VAC for controls. There is
19 VA available for controls.
Magnetic Contactor—An optional
electric heater 24-volt contactor for use
with direct digital control (DDC) or
analog electronic controls.
Mercury Contactor—An optional
electric heater 24-volt contactor for use
with direct digital control (DDC) or
analog electronic controls.
P.E. Switch with Magnetic
Contactor—This optional switch and
magnetic contactor is for use with
pneumatic controls.
P.E. Switch with Mercury
Contactor—This optional switch and
mercury contactor is for use with
pneumatic controls.
Airflow Switch— An air pressure
device designed to disable the heater
when the system fan is off. This is
standard on single-duct units.
Line Fuse—An optional safety fuse
located in the line of power of the
electric heater to prevent power surge
damage to the electric heater.
Disconnect Switch—A optional
factory-provided door interlocking
disconnect switch on the heater control
panel disengages primary voltage to
the terminal.
UNIT CONTROLS SEQUENCE OF
OPERATION
The unit controller continuously
monitors the zone temperature against
its setpoint and varies the primary
airflow as required to meet zone
setpoints. Airflow is limited by
VAV-PRC008-EN
minimum and maximum position
setpoints. Upon a further call for heat
after the air valve is at minimum, any
hot water or electric heat associated
with the unit is enabled.
DIRECT DIGITAL CONTROLS
DDC Actuator—Trane 3-wire,
24-VAC, floating-point control actuator
with linkage release button. Torque is
35 in-lb minimum and is non-spring
return with a 90-second drive time.
Travel is terminated by end stops at
fully-opened and -closed positions. An
integral magnetic clutch eliminates
motor stall.
Direct Digital Controller—The
microprocessor based terminal unit
controller provides accurate, pressureindependent
control through the use
of a proportional integral control
algorithm and direct digital control
technology. The controller, named the
Unit Control Module (UCM), monitors
zone temperature setpoints, zone
temperature and its rate of change,
and valve airflow using a differential
pressure signal from the pressure
transducer. Additionally, the controller
can monitor either supply duct air
temperature or CO 2
concentration via
appropriate sensors. The controller is
provided in an enclosure with 7/8"
(22 mm) knockouts for remote control
wiring. A Trane DDC zone sensor
is required.
DDC Zone Sensor—The UCM
controller senses zone temperature
through a sensing element located in
the zone sensor. In addition to the
sensing element, zone sensor options
may include an externally-adjustable
setpoint, communications jack for use
with a portable edit device, and an
override button to change the
individual controller from unoccupied
to occupied mode. The override button
has a cancel feature that will return the
system to unoccupied. Wired zone
sensors utilize a thermistor to vary the
voltage output in response to changes
in the zone temperature. Wiring to the
UCM controller must be 18- to 22-awg.
twisted pair wiring. The setpoint
adjustment range is 50–88ºF (10–31°C).
Depending upon the features available
in the model of sensor selected, the
zone sensor may require from a 2-wire
to a 5-wire connection. Wireless zone
sensors report the same zone
information as wired zone sensors, but
do so using radio transmitter
technology. Therefore with wireless,
wiring from the zone sensor to the UCM
is unnecessary.
Digital Display Zone Sensor with
Liquid Crystal Display (LCD)—
The digital display zone sensor contains
a sensing element, which sends a signal
to the UCM. A Liquid Crystal Display
(LCD) displays setpoint or space
temperature. Sensor buttons allow the
user to adjust setpoints, and allow space
temperature readings to be turned on or
off. The digital display zone sensor also
includes a communication jack for use
with a portable edit device, and an
override button to change the UCM from
unoccupied to occupied. The override
button has a cancel feature, which
returns the system to unoccupied mode.
System Communications— The
Controller is designed to send and
receive data from a Tracer Summit
or other Trane controllers. Current unit
status conditions and setpoints may be
monitored and/or edited via this data
communication feature. The network
type is a twisted wire pair shielded
serial communication.
ANALOG ELECTRONIC CONTROLS
Analog Actuator—A Trane 3- wire,
24-VAC, floating-point control actuator
with linkage release button. Torque is
35 in-lb minimum and is non-spring
return with a 90-second drive time.
Travel is terminated by end stops at
fully-opened and -closed positions. An
integral magnetic clutch eliminates
motor stall.
Analog Electronic Controller—The
controller consists of a circuit board that
offers basic VAV unit operation and
additional override functions and
operates using 24 VAC power. The
controller uses a capacitive type
pressure transducer to maintain
consistent air delivery regardless of
system pressure changes. The enclosure
has 7/8" (22 mm) knockouts for remote
control wiring. A Trane electronic zone
sensor is required.
Analog Electronic Thermostat—This
single-temperature, wall-mounted
electronic device utilizes a thermistor to
vary the voltage output in response to
changes in the zone temperature.
Connections to the VAV unit circuit
board are made using standard threeconductor
thermostat wire. The setpoint
adjustment range is 63–85ºF (17–29°C).
The sensor is available in two models.
One model has a concealed, internallyadjustable
setpoint. The other model
has an externally-adjustable setpoint.
SD 29

Single-Duct
Mechanical
Specifications
PNEUMATIC CONTROLS
Normally Open Actuator —
Pneumatic 3 to 8 psig (20 to 55 kPa)
spring-range pneumatic actuator.
Normally-Closed Actuator —
Pneumatic 8 to 13 psig (55 to 90 kPa)
spring-range pneumatic actuator.
3011 Pneumatic Volume Regulator
(PVR)—The regulator is a thermostat
reset velocity controller, which
provides consistent air delivery within
5% of cataloged flow down to 18% or
less of unit cataloged cfm, independent
of changes in system static pressure.
Factory-calibrated, field-adjustable
setpoints for minimum and maximum
flows. Average total unit bleed rate,
excluding thermostat, is 28.8 scim at
20 psig (7.87 ml/min at 138 kPa) supply.
CONTROL OPTIONS
Transformer (VCCF, VCWF)—The
50-VA transformer is factory-installed
in an enclosure with 7/8" (22 mm)
knockouts to provide 24 VAC for
controls.
Disconnect Switch (VCCF, VCWF)—
A toggle disconnect disengages
primary power to the terminal.
Fuse (VCCF, VCWF)—Optional fuse is
factory-installed in the primary voltage
hot leg.
HOT WATER VALVES
Two-Position Valve—The valve is a
field-adaptable, 2-way or 3-way
configuration and ships with a cap to
be field-installed when configured as a
2-way valve. All connections are
National Pipe Thread (NPT). The valve
body is forged brass with a stainless
steel stem and spring. Upon demand,
the motor strokes the valve. When the
actuator drive stops, a spring returns
the valve to its fail-safe position.
Flow Capacity – 1.17 Cv
Overall Diameter – ½" NPT
Close-off Pressure – 30 psi (207 kPa)
Flow Capacity – 3.0 Cv
Overall Diameter – 3/4" NPT
Close-off Pressure – 14.5 psi (100 kPa)
Flow Capacity – 6.4 Cv
Overall Diameter – 1" NPT
Close-off Pressure – 9 psi (62 kPa)
Maximum Operating Fluid
Temperature – 203ºF (95ºC)
Maximum system pressure – 300 psi
(2067 kPa)
Maximum static pressure – 300 psi
(2067 kPa)
Electrical Rating – 7 VA at 24 VAC,
6.5 Watts, 50/60 Hz
8 feet (2.44 m) of plenum rated wire
lead is provided with each valve.
Proportional Water Valve—The
valve is a field-adaptable, 2-way or
3-way configuration and ships with a
cap over the bottom port. This
configures the valve for 2-way
operation. For 3-way operation,
remove the cap. The valve is designed
with an equal percentage plug. The
intended fluid is water or water and
glycol (50% maximum glycol). The
actuator is a synchronous motor drive.
The valve is driven to a predetermined
position by the UCM controller using a
proportional plus integral control
algorithm. If power is removed, the
valve stays in its last position. The
actuator is rated for plenum
applications under UL 94-5V and UL
873 standards.
Pressure and Temperature Ratings –
The valve is designed and tested in full
compliance with ANSI B16.15 Class
250 pressure/temperature ratings,
ANSI B16.104 Class IV control shutoff
leakage, and ISA S75.11 flow
characteristic standards.
Flow Capacity – 3.80 Cv , 6.60 Cv,
0.70 Cv, 2.2 Cv
Overall Diameter – ½" NPT, ¾" NPT
(7.30 Cv)
Maximum Allowable Pressure – 300
psi (2068 kPa)
Maximum Operating Fluid
Temperature – 200ºF (93°C)
Maximum Close-off Pressure – 55 psi
(379 kPa)
Electrical Rating – 6VA at 24 VAC.
10 feet (3.05 m) of plenum rated
22-gage wire for connection.
Terminations are #6 stabs.
SD 30
VAV-PRC008-EN

Dual-Duct
Table of
Contents
Service Model Number Description DD 2
Selection Procedure DD 3 – 4
General Data – Valve/Controller Airflow Guidelines DD 5
Performance Data – Air Pressure Requirements DD 6 – 7
Performance Data – Acoustics DD 8 – 11
Dimensional Data DD 12 – 13
Mechanical Specifications DD 14 – 15
VAV-PRC008-EN
DD 1

Dual-Duct VAV Terminal Units
The features of the dual-duct VAV
terminal units are described by the
product categories shown in bold.
Within each category the options
available are listed.
VDDF
Dual-Duct
Digit 1, 2, 3—Unit Type
VDD VariTrane dual-duct
Digit 4—Development Sequence
F Sixth
Digit 5, 6—Primary Air Valve
05 5" inlet (350 cfm)
06 6" inlet (500 cfm)
08 6" inlet (900 cfm)
10 10" inlet (1400 cfm)
12 12" inlet (2000 cfm)
14 14" inlet (3000 cfm)
16 16" inlet (4000 cfm)
Digit 7, 8—Secondary Air Valve
05 5" inlet (350 cfm)
06 6" inlet (500 cfm)
08 8" inlet (900 cfm)
10 10" inlet (1400 cfm)
12 12" inlet (2000 cfm)
14 14" inlet (3000 cfm)
16 16" inlet (4000 cfm)
Digit 9—Not Used
0 N/A
Digit 10, 11—Design Sequence
C0 Third (factory assigned)
Digit 12, 13, 14, 15—Controls
ENON No Controls, Field-installed
DDC/Electric
PNON No Controls, Field-installed
Pneumatic
DD00 Trane elec actuator only
DD01 DDC – Cooling only
DD08 DDC – Constant-volume
discharge
DD11 LonTalk DDC Controller—
Cooling only
DD18 LonTalk DDC Controller—
Constant Volume Discharge
FM00 FM – Customer-supplied
actuator & controller
FM01 FM – Trane actuator w/
customer supplied controller
PC03 PN – N.C. heating/ N.O. cooling
w/ PVRs, DA stat
PN08 PN – N.O. heating/ N.O. cool
act. only, RA stat
PN09 PN – N.O. htg/clg vlvs w/ PVRs,
DA stat
PN10 PN – N.O. htg/clg w/ PVRs (cv
disch), DA stat.
Notes:
N.C. = Normally-closed
N.O. = Normally-opened
DA Stat = Direct-acting pneumatic t-stat
(by others)
RA Stat = Reverse-acting pneumatic t-
stat (by others)
PN = Pneumatic
FM = Factory installation of cus
tomer-supplied controller
PVR = Pneumatic Volume Regulator
Service
Model Number
Description
Digit 16—Insulation
A 1/2" Matte-faced
B 1" Matte-faced
C 1/2" Foil-faced
D 1" Foil-faced
F 1" Double-wall
G 3/8" Closed-cell
Digit 17—Not Used
0 N/A
Digit 18—Not Used
0 N/A
Digit 19—Outlet Plenum (Connection
is slip & drive)
0 none
A 1 outlet–RH
B 1 outlet–END
C 1 outlet–LH
D 2 outlets–1 RH, 1 END
E 2 outlets–1 LH, 1 END
F 2 outlets–1 RH, 1 LH
G 2 outlets - END
H 3 outlets–1 LH, 1 RH, 1 END
J 4 outlets–1 LH, 1 RH, 2 END
Note: See unit drawings for outlet sizes/
damper information.
Digit 20—Not Used
0 N/A
Digit 21—Not Used
0 N/A
Digit 22—Not Used
0 N/A
Digit 23—Transformer
0 None
1 120/24 volt (50 VA)
2 208/24 volt (50 VA)
3 240/24 volt (50 VA)
4 277/24 volt (50VA)
5 480/24 volt (50 VA)
6 347/24 volt (50 VA)
7 575/24 volt (50 VA)
Digit 24—Disconnect Switch
0 None
W With Toggle
Digit 25—Power Fuse
0 None
W With
DD 2
VAV-PRC008-EN

Dual-Duct
Selection
Procedure
This section describes the catalog
selection of dual-duct VAV terminal units
with specific examples. A computer
selection program is also available to
aid in selection of VAV terminal units.
Selection of dual-duct VAV terminal
units can involve two elements:
• Air valve selection
• Acoustics
Air Valve Selection
The wide-open static pressure and
airflows are found in the performance
data section of the catalog. To select the
air valves, locate the required design
cooling and heating airflows for your
terminal unit type and find their vertical
intersection, with the smallest air valve
size that has a pressure drop equal to or
lower than the maximum wide-open
static pressure requirement.
Example:
VDDF Terminal Unit
Design cooling airflow: 1000 cfm
Maximum wide-open
Air pressure drop: 0.25 in. wg
Minimum cooling airflow: 500 cfm
Design heating airflow: 1000 cfm
Maximum wide-open
Air pressure drop: 0.25 in. wg
Minimum heating airflow: 400 cfm
From the performance data charts,
select a valve size 10 for cooling, which
has a wide-open static pressure drop of
0.09 in. wg. Select a size 10 for heating,
which has a wide-open static pressure
drop of 0.09 in. wg.
Check the minimum and maximum cfm
desired with the minimum and
maximum cfm allowed in the table in
the general data section. The maximum
setting of 1000 cfm is within the
acceptable range. The desired minimum
setting of 500 cfm is acceptable for the
unit desired.
Acoustics
The acoustical data found in the
"Performance Data" section of the VAV
catalog is used to make a
determination of the amount of noise
the terminal unit will generate. Locate
the table for the VAV terminal unit of
interest. Sound power data and an
equivalent NC level for an ARI 885-98
transfer function is listed.
Example:
VDDF, Cooling-Only Terminal Unit, Size
10 cooling, Size 10 heating (See air
Valve Selection)
Cooling Airflow:
1000 cfm
Maximum inlet static
pressure:
1.5 in. wg
Heating Airflow:
1000 cfm
Maximum inlet static
pressure:
1.5 in. wg
Interpolation gives sound power data
of:
Octave 2 3 4 5 6 7 NC
Band
Disch. 83 72 69 67 66 60 39
Sound
Power
Rad. 69 63 57 54 47 40 34
Sound
Power
The NC level above is determined by
using either the catalog’s ARI 885-98
(mineral fiber for radiated sound)
transfer function for the conditions
shown in the acoustics table. A
different transfer function could be
applied as conditions dictate.
The maximum NC level is NC-40. If the
maximum NC level was exceeded, it
would have been necessary to reselect
the next larger unit size.
Computer Selection
The advent of personal computers has
served to automate many processes
that were previously repetitive and
time-consuming. One of those tasks is
the proper scheduling, sizing, and
selection of VAV terminal units. Trane
has developed a computer program to
perform these tasks. The software is
called the Trane Official Product
Selection System (TOPSS).
The TOPSS program will take the user’s
input specifications and output the
properly sized VariTrane VAV terminal
unit along with the specific
performance for that size unit.
The program has several required
fields, denoted by red shading in the
TOPSS program, and many other
optional fields to meet the criteria you
have. Required values include
maximum and minimum airflows,
control type, and model. If selecting
models with reheat, you will be
required to enter information to make
that selection also. The user is given
the option to look at all the information
for one selection on one screen or as a
schedule with the other VAV units on
the job.
The user can select single-duct, dualduct,
and fan-powered VAV boxes with
the program, as well as most other
Trane products, allowing you to select
all your Trane equipment with one
software program.
The program will also calculate sound
power data for the selected terminal
unit. The user can enter a maximum
individual sound level for each octave
band or a maximum NC value. The
program will calculate acoustical data
subject to default or user supplied
sound attenuation data.
VAV-PRC008-EN
DD 3

Dual-Duct
Selection
Procedure
Schedule View
The program has many time-saving
features such as:
• Copy/Paste from spreadsheets like
Microsoft ® Excel
• Easily arranged fields to match your
schedule
• Time-saving templates to store default
settings
The user can also export the Schedule
View to Excel to modify and put into a
CAD drawing as a schedule.
Specific details regarding the program,
its operation, and how to obtain a copy
of it are available from your local Trane
sales office.
Required entry fields (in Red
on TOPSS screen).
Rearrange what fields you see
and in what order with a few
clicks of a button.
DD 4
VAV-PRC008-EN

Dual-Duct
General Data—
Valve/Controller
Airflow Guidelines
Primary Airflow Control Factory Settings (per valve) – I-P
Control Air Valve Maximum Valve Maximum Controller Minimum Controller Constant Volume
Type Size (in.) Cfm Cfm Cfm Unit Cfm
5 350 40–350 0,40–350 40–700
6 500 60–500 0,60–500 60–1000
Direct Digital Control/ 8 900 105–900 0,105–900 105–1800
UCM 10 1400 165–1400 0,165–1400 165–2800
12 2000 240–2000 0,240–2000 240–4000
14 3000 320–3000 0,320–3000 320–6000
16 4000 420–4000 0,420–4000 420–8000
5 350 63–350 0,63–350 63–700
6 500 73–500 0,73–500 73–1000
Pneumatic with 8 900 134–900 0,134–900 134–1800
Volume Regulator 10 1400 215–1400 0,215–1400 215–2800
12 2000 300–2000 0,300–2000 300–4000
14 2885 408–2885 0,408–2885 408–5770
16 3785 536–3785 0,536–3785 536–7570
Primary Airflow Control Factory Settings (per valve) – SI
Control Air Valve Maximum Valve Maximum Controller Minimum Controller Constant Volume
Type Size (in.) L/s L/s L/s Unit L/s
5 165 19–165 0,19–165 19–330
6 236 28–236 0,28–236 28–472
Direct Digital Control/ 8 425 50–425 0,50–425 50–850
UCM 10 661 77–661 0,77–661 77–1321
12 944 111–944 0,111–944 111–1888
14 1416 151–1416 0,151–1416 151–2832
16 1888 198–1888 0,198–1888 198–3776
5 165 30–165 0,30–165 30–330
6 236 35–236 0,35–236 35–472
Pneumatic with 8 425 63–425 0,63–425 63–850
Volume Regulator 10 661 102–661 0,102–661 102–1321
12 944 141–944 0,141–944 141–1888
14 1362 193–1362 0,193–1362 193–2723
16 1787 253–1787 0,253–1787 253–3573
Note: Maximum airflow must be greater than or equal to minimum airflow.
VAV-PRC008-EN
DD 5

Dual-Duct
Performance
Data—Air Pressure
Requirements
Air Pressure Drop – in. wg (I-P)
Inlet Airflow
Size Cfm VDDF
05 100 0.01
200 0.02
300 0.04
350 0.06
06 100 0.01
250 0.08
350 0.17
500 0.38
08 200 0.01
400 0.04
600 0.10
900 0.24
10 500 0.02
800 0.05
1100 0.10
1400 0.17
12 800 0.01
1200 0.03
1600 0.06
2000 0.10
14 1500 0.04
2000 0.07
2500 0.12
3000 0.19
16 2000 0.03
2500 0.04
3000 0.06
4000 0.10
Note: Pressure drops are per air valve
Air Pressure Drop – Pa (SI)
Inlet Airflow
Size L/s VDDF
05 45 3
95 5
140 11
165 15
06 45 3
120 21
165 42
235 93
08 95 3
190 11
280 25
420 59
10 235 5
375 13
520 26
660 42
12 375 3
565 8
755 15
940 24
14 700 9
945 18
1180 30
1415 46
16 940 6
1180 10
1415 14
1885 25
DD 6
VAV-PRC008-EN

Dual-Duct
Performance
Data—Air Pressure
Requirements
Integral Outlet Plenum Air Pressure Drop – in. wg (I-P)
Outlet
Diameter Airflow
(in.) (Cfm) Integral Outlet Configurations
A,C B D,E F G H J
5 100 0.06 0.05 0.02 0.03 — 0.01 —
200 0.23 0.19 0.09 0.09 — 0.03 —
300 0.50 0.44 0.19 0.18 — 0.08 —
350 0.67 0.60 0.26 0.24 — 0.12 —
6 100 0.04 0.03 0.01 0.01 — 0.01 —
250 0.20 0.17 0.07 0.06 — 0.04 —
350 0.38 0.32 0.13 0.11 — 0.08 —
500 0.74 0.63 0.25 0.21 — 0.15 —
8 200 0.11 0.02 0.01 0.01 0.01 0.01 0.01
400 0.28 0.10 0.03 0.04 0.02 0.02 0.01
600 0.50 0.25 0.07 0.09 0.05 0.04 0.02
900 0.88 0.59 0.15 0.22 0.11 0.09 0.03
10 500 0.07 0.08 0.02 0.03 — 0.01 —
800 0.19 0.19 0.04 0.08 — 0.02 —
1100 0.35 0.34 0.07 0.15 — 0.04 —
1400 0.56 0.52 0.11 0.24 — 0.07 —
Integral Outlet Plenum Air Pressure Drop – Pa (SI)
Outlet
Diameter Airflow
(mm) (L/s) Integral Outlet Configurations
A,C B D,E F G H J
127 50 16 12 6 7 — 3 —
100 58 48 23 22 — 8 —
140 124 109 49 46 — 21 —
165 166 148 65 60 — 30 —
152 50 9 8 3 3 — 3 —
120 51 43 17 15 — 10 —
165 95 80 32 27 — 19 —
235 185 158 62 51 — 36 —
203 95 27 6 2 3 3 3 3
190 71 26 8 10 6 5 2
280 125 62 18 24 13 10 4
420 219 147 39 54 27 22 8
254 235 18 20 5 7 — 3 —
375 46 47 11 19 — 6 —
520 87 84 18 36 — 11 —
660 140 131 27 59 — 17 —
OUTL CONVERSION CHART
SYMBOL NOMINALØ
I 127 mm (5")
II 152 mm (6")
III 203 mm (8")
IV 254 mm (10")
OUTLET AVAILABILITY CHART-SEE OUTL CONVERSION FOR NOMINALØ
OUTL
VALV
A,B,C
D,E,F
G
H
J
0505 0606 0808 1010
I, II, III II, III
III, IV
N/A
I, II
I, II, III II, III, IV III, IV
N/A
N/A
N/A
III
I, II
I, II, III I, II, III
III, IV
N/A
N/A
N/A
III
OUTLET PLENUM
ARRANGEMENTS
(TOP VIEW)
A B C D E F G H
J
VAV-PRC008-EN
DD 7

Dual-Duct
Performance
Data—
Acoustics
Discharge Sound Power (dB)
Discharge Sound Power (dB)
Inlet 0.5" ∆Ps 1.0" ∆Ps 2.0" ∆Ps 3.0" ∆Ps
Size Cfm L/s 2 3 4 5 6 7 2 3 4 5 6 7 2 3 4 5 6 7 2 3 4 5 6 7
5 130 61 50 45 42 41 36 33 55 51 49 48 46 43 57 54 54 55 55 52 57 56 59 61 61 58
200 94 56 49 46 45 42 36 60 55 52 51 47 44 64 60 59 58 56 52 64 61 62 63 62 57
250 118 59 51 49 47 45 39 63 56 54 53 50 45 68 63 61 60 57 53 68 65 65 64 63 57
350 165 66 57 53 51 49 43 69 61 59 56 55 49 74 68 65 63 60 55 76 70 69 68 65 59
6 200 94 55 48 46 45 42 35 60 54 52 50 47 43 64 59 58 58 56 51 63 60 62 62 62 56
300 142 62 53 50 48 46 39 65 59 58 54 52 46 71 65 63 61 58 53 71 67 66 65 63 57
400 189 65 56 53 50 46 40 71 63 61 57 55 49 75 68 66 63 60 55 77 71 70 68 65 59
500 236 63 55 54 50 44 41 73 66 63 58 55 50 81 72 69 66 63 57 82 74 74 71 67 61
8 350 165 60 53 51 50 48 39 66 60 58 57 55 45 69 65 64 64 62 53 69 67 68 68 66 58
520 245 63 55 54 54 52 44 71 63 61 61 58 51 77 71 69 68 65 56 77 72 72 72 69 60
700 330 65 57 56 55 53 46 73 65 63 62 61 54 81 73 72 70 68 60 83 78 76 74 71 62
900 425 67 60 59 56 52 46 74 67 65 64 62 56 82 75 73 72 69 62 87 80 79 76 73 66
10 550 260 62 55 54 53 51 43 70 62 62 60 59 52 74 69 68 67 64 59 74 70 71 69 66 62
820 387 65 56 56 53 51 45 73 65 64 62 60 54 80 73 73 70 68 62 80 75 75 74 71 66
1100 519 68 59 58 55 52 47 75 66 64 63 60 55 83 75 74 71 68 63 85 79 78 76 73 68
1400 661 71 63 62 58 55 50 77 68 67 63 61 56 85 76 74 72 70 65 88 82 79 76 74 68
12 800 378 67 58 55 53 51 46 75 66 64 62 61 57 80 74 71 69 67 64 80 76 73 71 69 68
1200 566 71 60 56 53 51 46 80 70 64 62 60 56 86 78 73 70 68 65 86 81 77 73 72 69
1600 755 71 63 58 55 53 48 81 71 65 62 60 56 89 80 73 71 69 65 91 83 77 75 72 70
2000 944 73 65 61 57 55 50 81 73 67 63 61 56 92 81 74 72 69 65 94 86 78 76 72 69
14 1100 519 67 59 57 57 57 50 76 68 65 65 65 61 81 75 73 71 71 69 81 77 76 73 73 75
1600 755 69 61 57 57 56 50 77 69 65 65 66 60 85 77 74 72 72 70 86 81 77 76 74 74
2100 991 71 64 60 59 58 51 79 71 66 66 66 60 86 78 73 73 72 70 87 82 78 76 75 74
3000 1416 75 67 63 64 63 55 71 64 60 59 58 51 79 71 66 66 66 60 83 75 70 70 70 65
16 1400 661 66 59 57 56 59 54 75 68 67 64 66 63 81 76 73 70 70 72 82 79 77 73 71 76
2100 991 67 60 57 58 60 53 76 69 66 65 66 63 84 77 74 72 72 71 86 81 78 76 73 76
2800 1321 69 63 59 60 62 54 76 70 66 67 67 63 84 77 74 72 72 71 88 82 79 76 75 75
4000 1888 72 66 63 67 67 59 79 73 69 71 71 64 87 80 76 75 75 71 90 84 80 77 76 75
1. All data are measured in accordance with Industry Standard ARI 880-98.
2. All sound power levels, dB re: 10 -12 Watts.
3. Where ∆Ps is inlet static pressure minus discharge static pressure.
DD 8
VAV-PRC008-EN

Dual-Duct
Performance
Data—
Acoustics
Radiated Sound Power (dB)
Radiated Sound Power (dB)
Inlet 0.5" ∆Ps 1.0" ∆Ps 2.0" ∆Ps 3.0" ∆Ps
Size Cfm L/s 2 3 4 5 6 7 2 3 4 5 6 7 2 3 4 5 6 7 2 3 4 5 6 7
5 130 61 51 44 33 28 24 24 52 46 38 34 29 30 52 48 43 43 39 39 48 49 46 48 47 47
200 94 53 46 36 31 25 23 56 50 42 37 31 29 57 52 48 44 39 39 56 54 51 49 46 46
250 118 55 49 39 33 27 24 58 52 44 39 33 29 59 56 50 45 41 39 59 58 54 51 47 46
350 165 60 53 45 37 31 26 62 57 48 42 36 31 64 60 53 48 42 40 65 63 58 52 47 45
6 200 94 52 45 35 29 24 23 55 48 41 34 28 27 58 51 47 41 36 34 56 53 49 45 42 40
300 142 57 50 40 34 26 23 59 53 45 38 31 27 62 57 50 44 37 34 61 59 55 49 43 39
400 189 58 51 42 34 28 24 63 58 49 42 35 29 65 60 54 47 40 35 66 63 58 51 44 39
500 236 58 52 45 36 31 27 66 60 51 42 37 30 69 65 57 50 43 37 71 67 60 55 46 41
8 300 142 56 49 40 34 28 25 60 55 47 41 33 28 63 59 53 46 39 35 62 61 55 49 44 40
500 236 57 52 44 37 31 26 64 58 51 44 37 30 68 64 57 50 43 36 67 66 60 54 46 41
700 330 60 55 47 40 34 28 66 61 52 46 39 32 71 67 59 53 45 39 73 72 64 58 49 44
900 425 60 56 48 41 37 31 67 64 55 48 43 36 73 70 61 55 48 43 76 74 66 60 52 46
10 500 236 58 49 42 36 29 24 62 55 48 42 34 29 65 60 54 48 39 34 67 64 57 52 44 39
800 378 60 51 43 38 32 25 65 59 51 44 38 30 70 65 58 51 44 37 71 68 61 55 47 41
1100 519 60 53 46 40 35 27 67 60 53 46 40 32 73 67 60 53 46 39 75 71 65 57 50 43
1400 661 61 55 49 42 40 31 70 62 55 47 43 36 76 70 62 54 49 42 79 74 66 58 52 46
12 650 307 61 51 45 39 32 22 66 59 50 45 38 31 70 64 57 50 44 39 71 67 60 52 47 44
1100 519 64 54 48 41 36 25 71 62 52 47 42 34 75 69 59 52 47 42 77 72 64 55 50 47
1550 731 65 57 47 42 40 28 73 64 53 47 46 36 81 72 61 53 49 45 83 75 65 56 52 48
2000 944 66 59 48 44 45 35 75 66 54 48 48 40 85 74 62 53 51 47 88 79 67 57 53 50
14 900 425 58 50 43 39 33 23 67 58 52 45 40 34 72 66 60 51 45 40 72 68 64 53 48 46
1500 708 61 53 44 40 36 24 69 60 53 47 42 32 76 68 61 53 47 41 79 73 66 55 49 46
2100 991 63 55 46 42 40 27 71 62 53 47 44 35 78 69 61 52 48 43 82 73 66 56 51 46
3000 1416 66 60 50 46 49 36 75 66 55 50 50 40 85 73 61 54 52 47 88 77 66 57 53 48
16 1200 566 57 50 46 43 37 25 65 58 52 48 42 34 73 66 60 50 45 42 72 70 64 53 46 47
2000 944 59 53 48 46 42 28 67 60 54 50 47 36 75 68 62 53 49 45 78 73 66 56 49 48
3000 1416 61 56 50 50 48 33 69 62 54 52 52 40 78 69 61 55 53 47 83 74 66 58 53 51
4000 1888 65 61 54 54 59 43 71 65 58 55 60 49 83 72 63 58 59 54 89 76 66 61 58 55
1. All data are measured in accordance with Industry Standard ARI 880-98.
2. All sound power levels, dB re: 10 -12 Watts.
3. Where ∆Ps inlet static pressure minus discharge static pressure.
VAV-PRC008-EN
DD 9

Dual-Duct
Performance
Data—
Acoustics
Sound Noise Criteria (NC)
Discharge
Radiated
Inlet Pressure (∆Ps) Inlet Pressure (∆Ps)
Inlet 0.5" 1.0" 2.0" 3.0" 0.5" 1.0" 2.0" 3.0"
Size Cfm L/s (127 Pa) (254 Pa) (508 Pa) (762 Pa) (127 Pa) (254 Pa) (508 Pa) (762 Pa)
5 130 61 — — 15 21 — 15 16 20
200 94 — 15 20 20 — 17 22 25
250 118 — 19 25 25 16 20 25 29
350 165 22 26 32 35 22 26 30 34
6 200 94 — 15 20 19 — 16 21 23
300 142 17 21 29 29 19 21 26 30
400 189 21 29 34 36 20 27 30 34
500 236 19 31 41 42 20 30 36 38
8 350 165 15 22 26 27 17 24 29 31
520 245 19 29 36 36 20 27 35 37
700 330 21 31 41 44 24 31 38 44
900 425 24 32 42 49 25 35 41 46
10 550 260 — 24 29 30 20 25 30 35
820 387 17 27 36 36 22 29 36 39
1100 519 21 30 40 42 22 31 39 42
1400 661 25 32 42 46 24 35 42 46
12 800 378 17 27 34 36 24 30 35 38
1200 566 22 34 41 41 27 36 41 44
1600 755 22 35 45 47 29 39 49 52
2000 944 25 35 49 52 30 41 55 59
14 1100 519 17 29 35 38 20 31 37 39
1600 755 20 30 40 41 24 34 42 46
2100 991 22 32 41 42 26 36 45 50
3000 1416 27 22 32 37 30 41 55 59
16 1400 661 18 27 36 39 20 29 39 41
2100 991 17 29 39 41 22 31 41 45
2800 1321 20 29 39 44 25 34 45 52
4000 1888 24 32 42 46 31 36 52 60
1. “—” represents NC levels below NC 15.
2. NC Values are calculated using modeling assumptions based on ARI 885-98-02 Addendum.
3. Where ∆Ps is inlet static pressure minus discharge static pressure.
ARI 885-98 RADIATED TRANSFER FUNCTION ASSUMPTIONS:
Octave Band
2 3 4 5 6 7
Type 2- Mineral Fiber Insulation -18 -19 -20 -26 -31 -36
Total dB reduction -18 -19 -20 -26 -31 -36
Subtract from terminal unit sound power to determine radiated sound
pressure in the space.
ARI 885-98 DISCHARGE TRANSFER FUNCTION ASSUMPTIONS:
Octave Band
2 3 4 5 6 7
Small Box (700 Cfm) -29 -30 -41 -51 -52 -39
Subtract from terminal unit sound power to determine discharge sound
pressure in the space.
DD 10
VAV-PRC008-EN

Dual-Duct
Performance
Data—
Acoustics
Discharge Sound Power (dB)
ARI Conditions
Inlet
1.5" Inlet Pressure (381 Pa)
Size Cfm L/s 2 3 4 5 6 7
5 250 118 66 61 58 57 53 50
6 400 189 73 65 63 61 58 53
8 700 330 77 70 69 67 64 58
10 1100 519 80 71 70 68 65 59
12 1600 755 87 76 69 68 65 61
14 2100 991 83 75 70 70 70 65
16 2800 1321 81 75 70 70 71 68
Radiated Sound Power (dB)
ARI Conditions
Inlet
1.5" Inlet Pressure (381 Pa)
Size Cfm L/s 2 3 4 5 6 7
5 250 118 59 55 48 42 37 35
6 400 189 64 60 52 45 37 31
8 700 330 69 64 57 51 43 36
10 1100 519 71 65 57 50 43 36
12 1600 755 78 68 58 50 47 41
14 2100 991 76 66 57 50 47 39
16 2800 1321 74 66 58 53 52 44
Notes:
1. All sound data rated in accordance with current Industry Standard
ARI 880, version 1998.
2. All sound power levels, dB re: 10 -12 Watts.
VAV-PRC008-EN
DD 11

Dual-Duct
Dimensional
Data
DUAL-DUCT WITH OUTLET PLENUM/ATTENUATOR (VDDF)
INLET CFM LITERS per
INLET SIZE
SECOND
(NOMINAL Ø)
COOL HEAT COOL HEAT COOL HEAT COOL HEAT
05 05 350 350 165 165 5" (127 mm) 5" (127 mm)
06 05 500 350 236 165 6" (152 mm)
06 06 500 500 236 236
6" (152 mm)
08 06 900 500 425 236 8" (203 mm)
08 08 900 900 425 425
8" (203 mm)
10 08 1400 900 661 425 10" (254 mm)
10 10 1400 1400 661 661
10" (254 mm)
12 08 2000 900 994 425 12" (305 mm) 8" (203 mm)
12 10 2000 1400 994 661
10" (254 mm)
12 12 2000 2000 994 994
12" (305 mm)
14
16
14
16
3000
4000
3000
4000
1416
1888
1416
1888
14" (356 mm)
16" (406 mm)
14" (356 mm)
16" (406 mm)
FLOW RING
TUBING
5.50"
(140 mm)
6.50"
(165 mm)
C
AIR
VALVE
COOLING
4.00"
(104 mm)
AIR
VALVE
D
HEATING
DISCHARGE DIMENSIONS
A
14.00" (356 mm)
20.00" (508 mm)
FLOW RING
TUBING
B
20.00" (508 mm)
C
7.00" (178 mm)
D
7.00" (178 mm)
22.00" (559 mm)
8.00" (203 mm)
8.00" (203 mm)
7.00" (178 mm)
7.00" (178 mm)
10.00" (254 mm) 8.00" (203 mm)
9.00" (229 mm)
24.00" (610 mm)
10.00" (254 mm)
L
W
28.00" (711 mm) 15.50" (394 mm) 54 (24)
54 (24)
54 (24)
55 (25)
56 (25)
57 (26)
61 (28)
40.00" (1016 mm) 21.50" (546 mm) 58 (26)
59 (27)
60 (27)
81 (37)
83 (38)
H
Wt
Lbs
(kg)
L
SLIP & DRIVE
CONNECTION
DISCHARGE
DIMENSIONS (BxA)
AIRFLOW
ARRANGEMENT "H"
1.50" (38 mm) FLANGE
14.00"
(356 mm)
HEATING
CONTROL BOX
ANALOG OR DDC/UCM
TOP VIEW
COOLING
CONTROL BOX
ANALOG OR DDC/UCM
21.50"
(546.1 mm)
W
8.25"
(210 mm)
H
13.50"
(343 mm)
BACK VIEW
SIDE VIEW
OUTL CONVERSION CHART
SYMBOL
I
II
III
IV
NOMINALØ
5" (127 mm)
6" (152 mm)
8" (203 mm)
10" (254 mm)
OUTLET AVAILABILITY CHART-SEE OUTL CONVERSION FOR NOMINALØ
VALV
0505 0606 0808 1010
A,B,C I, II, III II, III
III, IV
N/A
OUTL
D,E,F I, II
I, II, III II, III, IV III, IV
G
H
N/A
I, II
N/A
I, II, III
N/A
I, II, III
III
III, IV
J N/A
N/A
N/A
III
A B C D E F G H
OUTLET PLENUM/ATTENUATOR
ARRANGEMENTS
(TOP VIEW)
J
CUSTOMER NOTES:
1. Outlet combinations to remote diffusers have
optional integral balancing dampers (See
specification sheet.)
2. Outlet connections are centered in plenum panel.
3. Minimum of 1.5 duct diameters of straight
duct required for proper flow reading.
4. Allow 12" (305 mm) on control side for servicing.
5. Weights are an estimation and will vary
based on selected options, insulation type, etc.
6. Allow 48" (1219 mm) of straight duct downstream
of unit before first runout & inside of the duct
should be equal discharge size (A x B).
DD 12
VAV-PRC008-EN

Dual-Duct
Dimensional
Data
DUAL-DUCT (VDDF) CONSTANT VOLUME
INLET
COOL
05 05
06 05
06
08 06
08 08
CFM
HEAT
350 350
500 350
500
900 500
900 900
LITERS per
SECOND
HEAT
165 165
236 165
425 236
425 425
INLET SIZE
(NOMINAL Ø)
COOL
HEAT
5" (127 mm) 5" (127 mm)
6" (152 mm)
6" (152 mm)
8" (203 mm)
8" (203 mm)
A
7.00" (178 mm)
8.00" (203 mm)
B
7.00" (178 mm)
8.00" (203 mm)
C
5" (127mm)
6" (152mm)
8" (203 mm)
L
22.00" (559 mm)
Wt
W H Lbs
(kg)
28.00" (711 mm) 15.50" (394 mm) 54 (24)
54 (24)
54 (24)
55 (25)
56 (25)
10
10 10
12 08
12
12 12
14 14
16 16
900
1400 1400
2000 900
1400
2000 2000
3000 3000
4000 4000
661 661
994 425
994 994
1416
1416
1888 1888
10" (254 mm)
10" (254 mm)
12" (305 mm) 8" (203 mm)
10" (254 mm)
12" (305 mm)
14" (356 mm) 14" (356 mm)
16" (406 mm) 16" (406 mm)
7.00" (178 mm)
7.00" (178 mm)
10.00" (254 mm) 8.00" (203 mm)
9.00" (229 mm)
10.00" (254 mm)
10" (254 mm)
12" (305 mm)
14" (356mm)
16" (406mm)
24.00" (610 mm) 40.00" (1016 mm) 21.50" (546 mm)
57 (26)
61 (28)
58 (26)
59 (27)
60 (27)
81 (37)
83 (38)
SEE CHART ABOVE
FLOW RING
TUBING
5.50"
(140 mm)
A
4.00"
B
6.50"
(165 mm)
COOLING
HEATING
HEATING
CONTROL BOX
ANALOG OR DDC/UCM
PNEUMATIC CONTROLS AREA
(SEE NOTES)
FLOW RING TUBING
CONNECTS TO
HEATING SIDE CONTROL
FLOW
RING
C
4.00"
(102 mm)
COOLING
CONTROL BOX
ANALOG OR DDC/UCM
PNEUMATIC CONTROLS AREA
(SEE NOTES)
TOP VIEW
AIRFLOW
DISCHARGE OUTLET
W
L
8.25"
(210 mm)
H
BACK VIEW
DISCHARGE IS CENTERED
ON BACK OF UNIT.
SIDE VIEW
NOTES:
1. See mechanical specifications for general unit clearances.
VAV-PRC008-EN
2. No control box provided for the following options:
ENON, PNON, DD00 & Pneumatic controls.
DD 13

Dual-Duct
Mechanical
Specifications
MODEL VDDF
Dual-duct terminal unit.
VDDF
CASING
22-gage galvanized steel.
Hanger brackets provided.
AGENCY LISTING
The unit is UL and Canadian UL
Listed as a room air terminal unit.
Control # 9N65.
ARI 880 Certified.
INSULATION
1/2" (12.7 mm) Matte-faced
Insulation—The interior surface of
the unit casing is acoustically and
thermally lined with ½-inch, 1.5 lb/ft 3
(12.7 mm, 24.0 kg /m 3 ) composite
density glass fiber with a high-density
facing. The insulation R-Value is 1.9. The
insulation is UL listed and meets NFPA-
90A
and UL 181 standards. There are no
exposed edges of insulation (complete
metal encapsulation).
1" (25.4 mm) Matte-faced
Insulation—The interior surface of the
unit casing is acoustically and
thermally lined with 1-inch, 1.0 lb/ft 3
(25.4 mm, 16.0 kg /m 3 ) composite
density glass fiber with a high-density
facing. The insulation R-Value is 3.85.
The insulation is UL listed and meets
NFPA-90A and UL 181 standards. There
are no exposed edges of insulation
(complete metal encapsulation).
1/2" (12.7 mm) Foil-faced
Insulation—The interior surface of the
unit casing is acoustically and
thermally lined with ½-inch, 1.5 lb/ft 3
(12.7 mm, 24.0 kg/m 3 ) density glass
fiber with foil facing. The insulation
R-Value is 2.1. The insulation is UL
listed and meets NFPA-90A and UL 181
standards as well as bacteriological
standard ASTM C 665. There are no
exposed edges of insulation (complete
metal encapsulation).
1" (25.4 mm) Foil-faced
Insulation—The interior surface of the
unit casing is acoustically and
thermally lined with 1-inch, 1.5 lb/ft 3
(25.4 mm, 24.0 kg/m 3 ) density glass
fiber with foil facing. The insulation
R-Value is 4.3. The insulation is UL
listed and meets NFPA-90A and UL 181
standards as well as bacteriological
standard ASTM C 665. There are no
exposed edges of insulation (complete
metal encapsulation).
DD 14
1" (25.4 mm) Double-wall
Insulation—The interior surface of
the unit casing is acoustically and
thermally lined with a 1-inch, 1.0 lb./ft 3
(25.4 mm, 16.0 kg/m 3 ) composite
density glass fiber with high-density
facing. The insulation R-value is 3.0.
The insulation is UL listed and meets
NFPA-90A and UL 181 standards.
An interior liner made of 26-gage
galvanized steel covers the insulation.
All wire penetrations are covered by
grommets. There are no exposed
edges of insulation (complete metal
encapsulation).
3/8" (9.5 mm) Closed-cell
Insulation—The interior surface of the
unit casing is acoustically and
thermally lined with 3/8-inch, 4.4 lb/ft 3
(9.5 mm, 70.0 kg/m 3 ) closed cell
insulation. The insulation is UL listed
and meets NFPA-90A and UL 181
standards. The insulation has an
R-Value of 1.4. There is complete metal
encapsulation.
Air Valve Combinations Available:
Air Valve Cataloged Air Valve Catalog
Size Airflow Size Airflow
in. (mm) cfm (L/s) in. (mm) cfm (L/s)
Cooling Cooling Heating Heating
05 (127) 350 (165) 05 (127) 350 (165)
06 (152) 500 (236) 05 (127) 350 (165)
06 (152) 500 (236) 06 (152) 500 (236)
08 (203) 900 (425) 06 (152) 500 (236)
08 (203) 900 (425) 08 (203) 900 (425)
10 (254) 1400 (661) 08 (203) 900 (425)
10 (254) 1400 (661) 10 (254) 1400 (661)
12 (305) 1400 (944) 08 (203) 900 (425)
12 (305) 2000 (944) 10 (254) 1400 (661)
12 (305) 2000 (944) 12 (305) 2000 (944)
14 (356) 3000 (1416) 14 (356) 3000 (1416)
16 (406) 4000 (1888) 16 (406) 4000 (1888)
PRIMARY AIR VALVES
Air Valve Round — The primary air
inlet connection is an 18-gage
galvanized steel cylinder sized to fit
standard round duct. A multiple-point,
averaging flow sensing ring is
provided with balancing taps for
measuring +/-5% of unit cataloged
airflow. An airflow-versus-pressure
differential calibration chart is provided.
The damper blade is constructed of a
closed-cell foam seal that is
mechanically locked between two
22-gage galvanized steel disks. The
damper blade assembly is connected
to a cast zinc shaft supported by selflubricating
bearings. The shaft is cast
with a damper position indicator. The
valve assembly includes a mechanical
stop to prevent over-stroking. At 4.0 in.
wg, air valve leakage does not exceed
1% of cataloged airflow.
OUTLET CONNECTION
Slip & Drive Connection—Terminal
units come standard with slip & drive
connection.
Outlet Plenum/Attenuator—A sheet
metal, insulated plenum/attenuator
with circular opening(s) is attached to
the discharge of the main unit at the
factory. The circular opening(s) are
centered on the unit plenum to accept
round ductwork connections.
Outlet Plenum/Attenuator with
Balancing Dampers—A sheet metal,
insulated plenum/attenuator with
circular opening(s) is factoryconnected
to the main unit. The circular
opening(s) with balancing damper(s)
are centered on the unit plenum to
accept round ductwork connections.
UNIT CONTROLS SEQUENCE OF
OPERATION
The unit controller continuously
monitors the zone temperature
against its setpoint and varies the
primary airflow as required to meet
zone setpoints. Airflow is limited by
minimum and maximum position
setpoints.
DIRECT DIGITAL CONTROLS
DDC Actuator—Trane 3-wire,
24 VAC, floating-point control actuator
with linkage release button. Torque is
35 in-lb. minimum and is non-spring
return with a 90-second drive time.
Travel is terminated by end stops at
fully-opened and -closed positions. An
integral magnetic clutch eliminates
motor stall.
Direct Digital Controller—The
microprocessor based terminal unit
controller provides accurate, pressureindependent
control through the use of
a proportional integral control
algorithm and direct digital control
technology. The controller, named the
Unit Control Module (UCM), monitors
zone temperature setpoints, zone
temperature and its rate of change, and
valve airflow using a differential
pressure signal from the pressure
transducer. Additionally, the controller
can monitor either supply duct air
temperature or CO 2
concentration via
appropriate sensors. The controller is
provided in an enclosure with 7/8"
(22 mm) knockouts for remote control
wiring. A Trane UCM zone sensor
is required.
VAV-PRC008-EN

Dual-Duct
Mechanical
Specifications
DDC Zone Sensor—The UCM
controller senses zone temperature
through a sensing element located in
the zone sensor. In addition to the
sensing element, zone sensor options
may include an externally-adjustable
setpoint, communications jack for use
with a portable edit device, and an
override button to change the individual
controller from unoccupied to occupied
mode. The override button has a cancel
feature that will return the system to
unoccupied. Wired zone sensors utilize a
thermistor to vary the voltage output in
response to changes in the zone
temperature. Wiring to the UCM
controller must be 18 to 22 awg. twisted
pair wiring. The setpoint adjustment
range is 50–88ºF (10–31°C). Depending
upon the features available in the model
of sensor selected, the zone sensor may
require from a 2-wire to a 5-wire
connection. Wireless zone sensors
report the same zone information as
wired zone sensors, but do so using
radio transmitter technology. Therefore
with wireless, wiring from the zone
sensor to the UCM is unnecessary.
Digital Display Zone Sensor with
Liquid Crystal Display (LCD)—
The digital display zone sensor
contains a sensing element, which
sends a signal to the UCM. A Liquid
Crystal Display (LCD) displays setpoint
or space temperature. Sensor buttons
allow the user to adjust setpoints, and
allow space temperature readings to
be turned on or off. The digital display
zone sensor also includes a
communication jack, for use with a
portable edit device, and an override
button to change the UCM from
unoccupied to occupied. The override
button has a cancel feature, which
returns the system to unoccupied mode.
System Communications—The
Controller is designed to send and
receive data from a Tracer Summit
or other Trane controllers. Current unit
status conditions and setpoints may be
monitored and/or edited via this data
communication feature. The network
type is a twisted wire pair shielded serial
communication.
PNEUMATIC CONTROLS
Normally-Open Actuator—
Pneumatic 3 to 8 psig (20 to 55 kPa)
spring-range pneumatic actuator.
Normally-Closed Actuator—
Pneumatic 8 to 13 psig (55 to 90 kPa)
spring-range pneumatic actuator.
3011 Pneumatic Volume Regulator
(PVR)—The regulator is a thermostat
reset velocity controller, which
provides consistent air delivery within
5% of cataloged flow down to 18% or
less of unit cataloged cfm, independent
of changes in system static pressure.
Factory-calibrated, field-adjustable
setpoints for minimum and maximum
flows. Average total unit bleed rate,
excluding thermostat, is 28.8 scim at
20 psig (7.87 mL/min at 138 kPa) supply.
3501 Pneumatic Volume Regulator
(PVR)—The 3501 regulator is a linear
reset volume controller. This PVR is
used to maintain a constant volume of
airflow from the dual-duct unit when
constant volume control is used.
Average total unit bleed rate, excluding
thermostat, is 43.2 scim at 20 psig
(11.8 mL/min at 138 kPa) supply.
CONTROL OPTIONS
Transformer—The 50-VA transformer
is factory-installed in an enclosure with
7/8" (2 mm) knockouts to provide
24 VAC for controls.
Disconnect Switch – A toggle
disconnect disengages primary power
to the terminal.
Fuse – Optional fuse is factoryinstalled
in the primary voltage hot leg.
VAV-PRC008-EN
DD 15

Fan-Powered
Parallel
Table of
Contents
Service Model Number Description FPP 2
Selection Procedure FPP 3 – 5
General Data – Valve/Controller Airflow Guidelines FPP 6
Performance Data – Air Pressure Requirements FPP 7 – 8
Performance Data – Fan Curves FPP 9 – 12
Performance Data – Hot Water Coil FPP 13 – 16
Performance Data – Electrical Data FPP 17 – 19
Performance Data – Acoustics FPP 20 – 25
Dimensional Data FPP 26 – 34
Mechanical Specifications FPP 35 – 37
VAV-PRC008-EN
FPP 1

Fan-Powered
Parallel
Service
Model Number
Description
Digit 1, 2—Unit Type
VP VariTrane fan-powered parallel
Digit 3—Reheat
C Cooling Only
E Electric Heat
W Hot Water Heat
Digit 4—Development Sequence
F Sixth
Digit 5, 6—Primary Air Valve
05 5" inlet (350 max cfm)
06 6" inlet (500 max cfm)
08 8" inlet (900 max cfm)
10 10" inlet (1400 max cfm)
12 12" inlet (2000 max cfm)
14 14" inlet (3000 max cfm)
16 16" inlet (4000 max cfm)
Digit 7, 8—Secondary Air Valve
00 N/A
Digit 9—Fan
P 02SQ fan (500 nominal cfm)
Q 03SQ fan (1100 nominal cfm)
R 04SQ fan (1350 nominal cfm)
S 05SQ fan (1550 nominal cfm)
T 06SQ fan (1850 nominal cfm)
U 07SQ fan (2000 nominal cfm)
Digit 10, 11—Design Sequence
A0 Design Sequence (Factory
assigned)
Digit 12, 13, 14, 15—Controls
ENON No controls, field-installed
DDC or analog
ENCL ENON with controls enclosure
PNON No controls, field-installed
pneumatic
DD00 Trane elec actuator only
DD01 DDC – cooling only
DD02 DDC – N.C. on/off water control
DD03 DDC – prop hot water control
DD04 DDC – on/off electric heat
control
DD05 DDC – pulse-width modulation
electric heat control
DD07 DDC – N.O. on/off hot water
control
DD11 LonTalk DDC Controller—
Cooling only
DD12 LonTalk DDC Controller w/ N.C.
on/off hot water control
DD13 LonTalk DDC Controller w/
proportional hot water control
DD14 LonTalk DDC Control–on/off
electric heat control
DD15 LonTalk DDC Controller w/
pulse-width modulation
electric heat control
DD17 LonTalk DDC Controller w/ N.O.
on/off hot water control
AT08 FM Automated Logic ZN341v+
AT10
FM00
FM Automated Logic ZN141v+
FM customer actuator &
control
FM01 FM Trane actuator w/ customersupplied
controller
HNY2 FM Honeywell W7751H
INV3 FM Invensys MNL-V2R
VMA2 FM Johnson VMA-1420
PWR1 FM Siemens 540-100 w/
GDE131.1 actuator
PWR2 FM Siemens 540-103 w/
GDE131.1 actuator
PW12 FM Siemens 550-065
PW13 FM Siemens 550-067
EI05 Analog – fan-powered parallel
with optional on/off reheat
PN00 PN – N.O. Trane pneumatic
actuator, R.A. stat
PN05 PN – N.O. PVR, R.A. stat
Notes:
N.C. = Normally-closed
N.O = Normally-opened
DA Stat = Direct-acting pneumatic t-stat
(by others)
RA Stat = Reverse-acting pneumatic
t-stat (by others)
PN = Pneumatic
FM = Factory installation of customersupplied
controller
PVR = Pneumatic Volume Regulator
Digit 16—Insulation
A 1/2" Matte-faced
B 1" Matte-faced
C 1/2" Foil-faced
D 1" Foil-faced
F 1" Double-wall
G 3/8" Closed-cell
Digit 17—Motor Type
D PSC Motor
E High-efficiency motor (ECM)
Digit 18—Motor Voltage
1 115/60/1
2 277/60/1
3 347/60/1
4 208/60/1
5 230/50/1
Digit 19—Outlet Connection
1 Flanged
2 Slip & Drive
Digit 20—Attenuator
0 None
W With
Digit 21—Water Coil
0 None
1 1-Row–Plenum inlet installed RH
2 2-Row–Plenum inlet installed RH
3 1-Row–Discharge installed, LH
4 1-Row–Discharge installed, RH
5 2-Row–Discharge installed, LH
6 2-Row–Discharge installed, RH
Digit 22—Electrical Connections
L Left
R Right
Electrical Connections Note: Airflow
hitting you in the face.
Digit 23—Transformer
0 N/A (provided as standard)
Digit 24—Disconnect Switch
0 None
W With
Note:
VPCF, VPWF – Toggle Disconnect
VPEF – Door Interlocking Power
Disconnect
Digit 25—Power Fuse
0 None
W With
Digit 26—Electric Heat Voltage
0 None
A 208/60/1
B 208/60/3
C 240/60/1
D 277/60/1
E 480/60/1
F 480/60/3
G 347/60/1
H 575/60/3
J 380/50/3
K 120/60/1
Digit 27, 28, 29—Electric Heat kW
000 None
050 0.5 kW
010 1.0 kW
015 1.5 kW
260 26.0 kW
Electric Heat Voltage Notes:
0.5 to 8.0 kW–½ kW increments
8.0 to 18.0 kW –1 kW increments
18.0 to 46.0 kW–2 kW increments
Digit 30—Electric Heat Stages
0 None
1 1 Stage
2 2 Stages Equal
3 3 Stages Equal
Digit 31—Contactors
0 None
1 24-volt magnetic
2 24-volt mercury
3 PE with magnetic
4 PE with mercury
Digit 32—Airflow Switch
0 None
W With
FPP 2
VAV-PRC008-EN

Fan-Powered
Parallel
Selection
Procedure
This section describes the elements
and process required to properly select
parallel fan-powered VAV terminals,
and includes a specific example. The
selection procedure is iterative in
nature which makes computer
selection desirable.
Selection of fan-powered VAV
terminals involves four elements:
• Air valve selection
• Heating coil selection
• Fan size and selection
• Acoustics
Note: Use the same procedures for
selecting Low-Height Parallel Fan-
Powered Units as used for selecting
Parallel Fan-Powered Units.
Air Valve Selection
Provided in the Performance Data—Air
Pressure Requirements section of the
catalog is the unit air pressure drop at
varying airflows. To select an air valve,
determine the airflow required at
design cooling. Next, select an air
valve diameter that will allow proper
airflow modulation, (a velocity of 1600
– 2000 FPM is recommended). Keep in
mind that modulation below 300
FPM is not recommended. Proper
selection requires defining the
minimum valve airflow (in either
heating or cooling) and maintaining at
least 300 FPM through the air valve.
The minimum is typically set based on
ventilation requirements. If zone
ventilation does not come through the
VAV unit, a minumum valve position
can also be zero.
Heating Coil Selection
Supply Air Temperature
The first step required when selecting a
heating coil is to determine the heating
supply air temperature to the space,
calculated using the heat transfer
equation. A recommended value is
90°F, although values between 85°F
and 95°F are common. Discharge air
temperatures that exceed 20 degrees
above space temperature are not
recommended for proper diffuser
operation. Air temperature difference is
defined as the heating supply air
temperature to the space minus the
winter room design temperature. The
zone design heat loss rate is denoted
by the letter Q. Supply air temperature
to the space equals the leaving air
temperature (LAT) for the terminal unit.
VAV-PRC008-EN
Coil Leaving Air Temperature
Once the terminal unit LAT is
determined, the heating requirements
for the coil can be calculated. The
leaving air temperature for the coil of a
parallel fan-powered terminal unit
varies based on the type of unit
installed heat being selected.
Electric coil LAT equals terminal unit
LAT because the coil is located on the
unit discharge. Hot water coils can be
located on either the discharge or, for
maximum system efficiency, the
plenum inlet when located on the
entering air side of the fan. Coil LAT is
calculated using a mixing equation.
Given the unit heating airflow and LAT,
minimum primary airflow at its supply
air temperature, and the volume of
heated plenum air, the leaving air
temperature for the hot water coil can
be determined (see the unit selection
example that follows for more details).
Coil Entering Air Temperature
The entering air temperature (EAT) to
the coil also varies based on the coil
position on the unit.
Electric coils are mounted on the unit
discharge. Hot water coils can be
mounted on the discharge or on the
plenum inlet. Plenum inlet mounting
creates a more efficient VAV system.
This is because the parallel fan is
energized only when in heating mode,
and thus, when in cooling mode, the
water coil is not in the airstream.
The EAT for discharge mounted coils
equals the temperature of blended
primary air and plenum air. For
plenum inlet mounted water coils, the
EAT equals the plenum air
temperature.
Capacity Requirement
Once both coil EAT and LAT are
determined, the heat transfer (Q) for
the coil must be calculated using the
heat transfer equation. For electric heat
units, the Q value must be converted
from Btu to kW for heater selection.
The required kW should be compared
to availability charts in the performance
data section for the unit selected. For
hot water heat units, reference the
capacity charts in the performance data
section for the required heat transfer Q
and airflow to pick the appropriate coil.
Fan Size and Selection
Fan Airflow
Fan airflow is determined by
calculating the difference between
the unit design heating airflow and
minimum primary airflow.
Fan External Static Pressure
Fan external static pressure is the total
resistance experienced by the fan,
which may include downstream
ductwork and diffusers, heating coils,
and sound attenuators. As total airflow
varies so will static pressure, making
calculation of external static pressure
dependent on unit type.
In many applications of parallel
terminals, a minimum primary airflow
must be maintained to meet
ventilation requirements. This primary
airflow contributes to the total
resistance experienced by the fan and
should be accounted for in all
components downstream of the fan
itself, including electric coils. Hot water
coils positioned on the fan inlet are not
affected by the additional primary
airflow. The static pressure resistance
experienced by the fan due to the hot
water coil is based on fan airflow only,
not the total heating airflow.
Selection
Once fan airflow and external static
pressure are determined, reference the
fan curves in the performance data
section. Cross plot both airflow and
external static pressure on each
applicable graph. A selection between
the minimum and maximum airflow
ranges for the fan is required.
It is common to identify more than
one fan that can meet the design
requirements. Typically, selection
begins with the smallest fan available
to meet capacity. If this selection
does not meet acoustical
requirements, upsizing the fan and
operating it at a slower speed can be
done for quieter operation.
Acoustics
Air Valve Generated Noise
To determine the noise generated by
the air valve, two pieces of information
are required; design airflow and design
air pressure drop. The design air
pressure drop is determined by taking
the difference between design inlet
and static pressure (the valve’s most
over-pressurized condition) and
external static pressure at design
cooling flow. This represents a worstcase
operating condition for the valve.
Fan Generated Noise
To determine fan noise levels, fan
airflow, external static pressure and
speed information is required.
FPP 3

Fan-Powered
Parallel
Selection
Procedure
Evaluation Elements
For parallel fan-powered terminal units,
the air valve and fan operation must be
evaluated separately because these
operations are not simultaneous.
Access the appropriate acoustics table(s)
of the catalog and determine the sound
power and NC prediction for both the
discharge and radiated paths. It is
important to understand that discharge air
noise is generally not a concern with fanpowered
terminals. Radiated noise from
the unit casing typically dictates the noise
level of
the space.
If the entire unit or any element of it is
generating noise in excess of the Noise
Criteria requirements, the size of the
appropriate portion of the terminal
should be increased. Because the
selection procedure is iterative, care
should be taken by the designer to
confirm that the change in selection
does not affect other elements of the
unit or system design.
Selection Example—
Parallel With Hot Water Heat
Air Valve Selection
Design Cooling Airflow 1000 cfm
Minimum Ventilation Airflow 200 cfm
Maximum Unit APD 0.25 in. wg
Choose 10" air valve
Check – Is minimum airflow above
300 FPM?
Answer – Yes. Minimum cfm allowable =
165 cfm (see General Data—Valve/
Controller Guidelines, FPP 8)
A 10" air valve is selectd with unit
pressure drop = 0.01 in. wg
Heating Coil Selection
Required Information:
Zone design heat loss: 20000 Btu
Unit heating airflow: 600 cfm
Winter room design temp.: 68ºF
Coil entering water temp.: 180ºF
Minimum primary airflow: 200 cfm
Fan Airflow:
400 cfm
Plenum temperature: 70ºF
Coil flow rate:
2 gpm
Primary air temperature: 55ºF
Heat Transfer Equation (Btu)
Q = 1.085 x Cfm x D Temperature
For the heating zone, the temperature
difference is the zone supply air
temperature (SAT) minus the winter
room design temperature.
18000 Btu = 1.085 x 600 x (SAT - 68ºF)
SAT = 95.6ºF
FPP 4
Because the designer chose to maximize
system efficiency by having the hot
water coil on the plenum inlet, the unit
supply air temperature is equal to the
mix of the heated plenum air from the
fan and the minimum primary airflow.
600 cfm x 95.6ºF =
200 cfm x 55ºF +
(600 cfm - 200 cfm) x Coil LAT
Coil LAT = 116ºF
For the heating coil, the temperature
difference is the calculated coil LAT
minus the coil EAT (Plenum Air
Temperature).
Coil Q = 1.085 x 400 x (116-70) =
19,964 Btu = 19.96 Mbh
Coil Performance Table
Selection:
Size 02SQ fan, 1-row coil with 2 gpm =
20.53 Mbh (at 400 cfm)
1-row coil with 2 gpm = 2.57 ft WPD
Fan Selection
Required Information:
Design airflow:
400 cfm
Downstream static pressure
at design airflow: 0.25 in. wg
Fan external static pressure equals
downstream static pressure (ductwork
and diffusers) plus coil static pressure.
The coil static pressure that the fan
experiences is at the fan airflow
(400 cfm). The downstream static
pressure the fan experiences is at fan
airflow plus minimum primary airflow.
The sum of fan airflow and minimum
primary airflow (600 cfm) is less than
design airflow (1000 cfm) and therefore
the 0.25 in. wg downstream static
pressure at design airflow must be
adjusted for the lower heating airflow.
Parallel Fan-Powered Unit with
Water Coil (2 Options)
Plenum Inlet Mounted
Discharge Mounted
Using Fan Law Two:
Heating Downstream Static Pressure =
(600/1000) 2 x 0.25 = .09 in. wg
A size 02SQ fan has the capability to
deliver approximately 650 cfm at 0.09
downstream static pressure.
If an attenuator is required, use the
attenuator air pressure drop tables to
define additional fan static pressure.
Acoustics
Required Information:
Design inlet static press.: 1.0 in. wg
NC criteria:
NC-35
The selection is a VPWF Parallel Fanpowered
Terminal Unit, 10" primary,
parallel fan size 02SQ, with a 1-row hot
water coil.
Determine the casing radiated noise
level because it typically dictates the
sound level (NC) of the space. With a
parallel unit, two operating conditions
must be considered, design cooling
and design heating.
Design Cooling (1000 cfm). Radiated
valve typically sets the NC for parallel
units in cooling mode. The closest
tabulated condition (1100 cfm at
1.0 in. wg ISP) has an NC=31. (A more
accurate selection can be done via
TOPSS electronic selection program.):
Selection Program Output (Radiated Valve):
Octave 2 3 4 5 6 7 NC
Band
Sound 65 60 53 48 41 32 30
Power
Design Heating (200 cfm valve,
400 cfm fan, 0.25 in. wg DSP). Radiated
fan typically sets the NC for parallel
units in heating mode. The closest
cataloged condition (430 fan cfm , 0.25
in. wg DSP) has an NC=32. (A more
accurate selection can be done via
TOPSS electronic selection program.)
Selection Program Output (Radiated Fan):
Octave 2 3 4 5 6 7 NC
Band
Sound 66 58 56 52 48 41 31
Power
The predicted NC level for design
cooling is NC-30 and for design
heating is NC-31. If the catalog path
attenuation assumptions are
acceptable, this unit meets all of the
design requirements and the selection
process is complete.
VAV-PRC008-EN

Fan-Powered
Parallel
Selection
Procedure
Computer Selection
The advent of personal computers
has served to automate many
processes that were previously
repetitive and time-consuming. One
of those tasks is the proper scheduling,
sizing, and selection of VAV terminal
units. Trane has developed a computer
program to perform these tasks. The
software is called the Trane Official
Product Selection System (TOPSS).
The TOPSS program will take the input
specifications and output the properly
sized VariTrane VAV terminal unit along
with the specific performance for that
size unit.
The program has several required
fields, denoted by red shading in the
TOPSS screen, and many other
optional fields to meet the criteria you
have. Required values include
maximum and minimum airflows,
control type, and model. If selecting
models with reheat, you will be
required to enter information to make
that selection also. The user is given
the option to look at all the information
for one selection on one screen or as a
schedule with the other VAV units on
the job.
The user can select single-duct, dualduct,
and fan-powered VAV boxes with
the program, as well as most other
Trane products, allowing you to select
all your Trane equipment with one
software program.
The program will also calculate sound
power data for the selected terminal
unit. The user can enter a maximum
individual sound level for each octave
band or a maximum NC value. The
program will calculate acoustical data
subject to default or user supplied
sound attenuation data.
Schedule View
The program has many time-saving features such as:
• Copy/Paste from spreadsheets like Microsoft ® Excel
• Easily arranged fields to match your schedule
• Time-saving templates to store default settings
The user can also export the Schedule View to Excel to modify and put into a CAD
drawing as a schedule.
Specific details regarding the program, its operation, and how to obtain a copy of it
are available from your local Trane sales office.
Required entry fields (in Red
on TOPSS screen).
Rearrange what fields you see
and in what order with a few
clicks of a button.
VAV-PRC008-EN
FPP 5

Fan-Powered
Parallel
General Data—
Valve/Controller
Airflow Guidelines
Primary Airflow Control Factory Settings – I-P
Control Air Valve Maximum Valve Maximum Controller Minimum Controller Constant Volume
Type Size (in.) Cfm Cfm Cfm Cfm
5 350 40–350 0, 40–350 40–350
6 500 60–500 0, 60–500 60–500
8 900 105–900 0, 105–900 105–900
Direct Digital Control/ 10 1400 165–1400 0, 165–1400 165–1400
UCM 12 2000 240–2000 0, 240–2000 240–2000
14 3000 320–3000 0, 320–3000 320–3000
16 4000 420–4000 0, 420–4000 420–4000
5 350 63–350 0, 63–350 63–350
6 500 73–500 0, 73–500 73–500
Pneumatic with 8 900 134–900 0, 134–900 134–900
Volume Regulator 10 1400 215–1400 0, 215–1400 215–1400
12 2000 300–2000 0, 300–2000 300–2000
14 2885 408–2887 0, 408–2887 408–2887
16 3785 536–3789 0, 536–3789 536–3789
5 350 82–350 0, 82–350 82–350
6 500 120–500 0, 120–500 120–500
8 900 210–900 0, 210–900 210–900
Analog Electronic 10 1400 328–1400 0, 328–1400 328–1400
12 2000 470–2000 0, 470–2000 470–2000
14 3000 640–3000 0, 640–3000 640–3000
16 4000 840–4000 0, 840–4000 840–4000
Primary Airflow Control Factory Settings – SI
Control Air Valve Maximum Valve Maximum Controller Minimum Controller Constant Volume
Type Size (in.) L/s L/s L/s L/s
5 165 19–165 0, 19–350 19–350
6 236 28–236 0, 28–236 28–236
8 425 50–425 0, 50–425 50–425
Direct Digital Control/ 10 661 77–661 0, 77–661 77–661
UCM 12 944 111–944 0, 111–944 111–944
14 1416 151–1416 0, 151–1416 151–1416
16 1888 198–1888 0, 198–1888 198–1888
5 165 30–165 0, 30–165 30–165
6 236 35–236 0, 35–236 35–236
Pneumatic with 8 425 63–425 0, 63–425 63–425
Volume Regulator 10 661 102–661 0, 102–661 102–661
12 944 141–944 0, 141–944 141–944
14 1362 193–1363 0, 193–1363 193–1363
16 1787 253–1788 0, 253–1788 253–1788
5 165 39–165 0, 39–165 39–165
6 236 57–236 0, 57–236 57–236
8 425 100–425 0, 100–425 100–425
Analog Electronic 10 661 155–661 0, 155–661 155–661
12 944 222–944 0, 222–944 222–944
14 1416 303–1416 0, 303–1416 303–1416
16 1888 397–1888 0, 397–1888 397–1888
Note: Maximum airflow must be greater than or equal to minimum airflow.
FPP 6
VAV-PRC008-EN

Unit Air Pressure Drop – in. wg (I-P)
Fan/Inlet Airflow Cooling
Size Cfm Only
02SQ–05 40 0.01
150 0.03
250 0.08
350 0.17
02SQ–06 60 0.01
200 0.05
350 0.17
500 0.35
02SQ–08 105 0.01
350 0.03
600 0.09
900 0.21
02SQ–10 165 0.01
550 0.01
950 0.01
1400 0.01
03SQ–06 60 0.01
200 0.06
350 0.19
500 0.40
03SQ–08 105 0.01
350 0.03
600 0.08
900 0.20
03SQ–10 165 0.01
550 0.01
950 0.02
1400 0.05
03SQ–12 240 0.01
750 0.01
1350 0.01
2000 0.01
04SQ–08 105 0.01
350 0.03
600 0.08
900 0.20
04SQ–10 165 0.01
550 0.01
950 0.02
1400 0.05
04SQ–12 240 0.01
750 0.01
1350 0.01
2000 0.01
04SQ–14 320 0.01
1200 0.01
2100 0.01
Fan-Powered
Parallel
Fan/Inlet Airflow Cooling
Size Cfm Only
05SQ–10 165 0.01
550 0.01
950 0.02
1400 0.05
05SQ–12 240 0.01
750 0.01
1350 0.01
2000 0.01
05SQ–14 320 0.01
1200 0.01
2100 0.01
3000 0.01
06SQ–10 165 0.01
550 0.01
950 0.01
1400 0.01
06SQ–12 240 0.01
750 0.01
1350 0.01
2000 0.01
06SQ–14 320 0.01
1200 0.01
2100 0.01
3000 0.01
06SQ–16 420 0.01
1600 0.01
2800 0.01
4000 0.01
07SQ–10 165 0.01
550 0.01
950 0.01
1400 0.01
07SQ–12 240 0.01
750 0.01
1350 0.01
2000 0.01
07SQ–14 320 0.01
1200 0.01
2100 0.01
3000 0.01
07SQ–16 420 0.01
1600 0.01
2800 0.01
4000 0.01
3000 0.01
Note: Unit pressure drops do not include hot water coil or attenuator
pressure drops.
Performance
Data—Air Pressure
Requirements (I-P)
Coil Air Pressure Drop – in. wg (I-P)
Fan Airflow 1-Row HW 2-Row HW
Size Cfm (in. wg) (in. wg)
02SQ 100 0.00 0.00
200 0.01 0.01
300 0.01 0.02
400 0.02 0.03
500 0.02 0.05
03SQ 250 0.01 0.02
04SQ 500 0.02 0.04
05SQ 750 0.04 0.08
1000 0.07 0.13
1250 0.10 0.19
1400 0.12 0.23
06SQ 600 0.02 0.04
07SQ 900 0.04 0.07
1200 0.06 0.11
1500 0.09 0.16
1800 0.12 0.22
2000 0.15 0.27
Note: HW Coil Only pressure drops do not include unit
pressure drop.
Attenuator Air
Pressure Drop (I-P)
Fan Plenum
Size Cfm Attenuator
02SQ 50 0.00
200 0.00
350 0.01
500 0.02
650 0.04
750 0.06
03SQ 50 0.00
250 0.00
500 0.00
750 0.00
1000 0.01
1200 0.06
04SQ 50 0.00
300 0.01
600 0.02
900 0.03
1200 0.05
1450 0.06
05SQ 50 0.00
300 0.00
600 0.02
900 0.06
1200 0.13
1550 0.24
06SQ 50 0.00
500 0.01
900 0.03
1300 0.06
1650 0.10
1900 0.14
07SQ 50 0.00
500 0.01
1000 0.04
1500 0.08
2000 0.15
2500 0.25
Note: Plenum cfm = (Fan cfm)
VAV-PRC008-EN
FPP 7

Unit Air Pressure Drop – Pa (SI)
Fan/Inlet Airflow Cooling
Size L/s Only
02SQ–05 19 2
71 7
118 20
165 41
02SQ–06 28 2
94 13
165 41
236 86
02SQ–08 50 2
165 8
283 23
425 51
02SQ–10 78 2
260 2
448 2
661 3
03SQ–06 28 2
94 15
165 48
236 99
03SQ–08 50 2
165 6
283 21
425 49
03SQ–10 78 2
260 2
448 6
661 13
03SQ–12 113 2
354 2
637 2
944 2
04SQ–08 50 2
165 6
283 21
425 49
04SQ–10 78 2
260 2
448 6
661 13
04SQ–12 113 2
354 2
637 2
944 2
04SQ–14 151 2
566 2
991 2
1416 2
Note: Unit pressure drops do not include hot water coil or attenuator
pressure drops.
Fan-Powered
Parallel
Fan/Inlet Airflow Cooling
Size L/s Only
05SQ–10 78 2
260 2
448 6
661 13
05SQ–12 113 2
354 2
637 2
944 2
05SQ–14 151 2
566 2
991 2
1416 2
06SQ–10 78 2
260 2
448 2
661 2
06SQ–12 113 2
354 2
637 2
944 2
06SQ–14 151 2
566 2
991 2
1416 2
06SQ–16 198 2
755 2
1321 2
1888 2
07SQ–10 78 2
260 2
448 2
661 2
07SQ–12 113 2
354 2
637 2
944 2
07SQ–14 151 2
566 2
991 2
1416 2
07SQ–16 198 2
755 2
1321 2
1888 2
Performance
Data—Air Pressure
Requirements (SI)
Coil Air Pressure Drop – Pa (SI)
Fan Airflow 1-Row HW 2-Row HW
Size L/s (Pa) (Pa)
02SQ 200 0 1
300 1 3
400 2 5
500 4 8
600 6 12
03SQ 118 2 4
04SQ 236 5 11
05SQ 354 10 21
472 17 33
590 25 47
661 31 57
06SQ 900 5 10
07SQ 1200 9 18
1500 15 28
1800 22 41
2150 30 56
2500 36 67
Note: HW Coil Only pressure drops do not include unit
pressure drop.
Attenuator Air
Pressure Drop (SI)
Fan Plenum
Size L/s Attenuator
02SQ 24 0
94 0
165 2
236 5
307 10
354 14
03SQ 24 0
118 0
236 0
354 0
472 2
566 14
04SQ 24 0
142 3
283 5
425 8
566 11
684 14
05SQ 24 0
142 1
283 5
425 15
566 32
731 61
06SQ 24 0
236 2
425 7
613 15
779 26
897 35
07SQ 24 0
236 2
472 9
708 21
944 38
1180 62
Note: Plenum cfm = (Fan cfm)
FPP 8
VAV-PRC008-EN

Fan-Powered
Parallel
Performance
Data—
Fan Curves
Notes:
1. When attenuator is required,
add inlet attenuator pressure to
discharge static pressure for final
fan performance.
Pa
150
125
In. wg
0.60
0.50
Parallel 02SQ—PSC
Discharge Static Pressure
100
75
50
0.40
0.30
0.20
120 cfm min
(57 L/s)
25
0.10
100
200 300 400 500
600
700
Cfm
47
94 142 189 236
283
330
L/s
Airflow
Pa
199
In. wg
0.80
Parallel Fan Size 03SQ—PSC
174
0.70
150
0.60
VPCF and VPEF maximum
Minimum
1-row coil maximum
2-row coil maximum
Discharge Static Pressure
125
100
75
50
0.50
0.40
0.30
0.20
250 cfm min
(118 L/s)
25
0.10
200 300 400 500
600
700
800
900
1000
1100
1200
1300 Cfm
94 142 189 236
283
330
378
425
472
519
566
614 L/s
Airflow
Pa
199
In. wg
0.80
Parallel 04SQ—PSC
174
0.70
Discharge Static Pressure
150
125
100
75
50
0.60
0.50
0.40
0.30
0.20
300 cfm min
(142 L/s)
VAV-PRC008-EN
25
0.10
200 400 600 800 1000 1200 1400 1600 Cfm
94 189 283 378 472 566 661 755 L/s
Airflow
FPP 9

Fan-Powered
Parallel
Performance
Data—
Fan Curves
Discharge Static Pressure
Pa
199
174
150
125
100
75
50
In. wg
0.80
0.70
0.60
0.50
0.40
0.30
0.20
350 cfm min
(165 L/s)
Parallel 05SQ—PSC
Notes:
1. When attenuator is required,
add inlet attenuator pressure to
discharge static pressure for final
fan performance.
25
0.10
300 500 700 900 1100 1300 1500 1700
142 236 330 425 519 614 708 802
Airflow
Cfm
L/s
Pa In. wg Parallel 06SQ—PSC
199
0.80
174
0.70
Discharge Static Pressure
150
125
100
75
0.60
0.50
0.40
0.30
530 cfm min
(250 L/s)
VPCF and VPEF maximum
Minimum
1-row coil maximum
2-row coil maximum
50
0.20
25
0.10
400 600 800 1000 1200 1400 1600 1800 2000 2200
189 283 378 472 566 661 755 850 944 1038
Airflow
Cfm
L/s
Pa In. wg Parallel 07SQ—PSC
199
0.80
174
0.70
Discharge Static Pressure
150
125
100
75
0.60
0.50
0.40
0.30
585 cfm min
(276 L/s)
50
0.20
25
0.10
500 700 900 1100 1300 1500 1700 1900 2100 2300
236 330 425 519 614 708 802 897 991 1086
Cfm
L/s
FPP 10
Airflow
VAV-PRC008-EN

Fan-Powered
Parallel
ECM Data—
Fan Curves
Notes:
1. ECMs (Electrically Commutated
Motors) are ideal for systems seeking
maximum motor efficiency.
2. When attenuator is required, add inlet
attenuator pressure to discharge
static pressure for final fan
performance.
Discharge Static Pressure
Pa In. wg VPxF 03SQ—ECM
125
100
75
50
0.50
0.40
0.30
0.20
160 cfm min
(76 L/s)
25
0.10
100 200 300 400 500 600 700 800 900 1000 1100
47 94 142 189 236 283 330 378 425 472 519
Airflow
Cfm
L/s
Pa In. wg VPxF 04SQ—ECM
125
0.50
100
0.40
VPCF and VPEF maximum
Minimum
1-row coil maximum
2-row coil maximum
Discharge Static Pressure
75
50
0.30
0.20
220 cfm min
(104 L/s)
25
0.10
200 400 600 800 1000 1200 1400 1600
94 189 283 378
472 566
661 755
Airflow
Cfm
L/s
Pa In. wg VPxF 05SQ—ECM
125
0.50
Discharge Static Pressure
100
75
50
0.40
0.30
0.20
280 cfm min
(132 L/s)
25
0.10
200 400 600 800 1000 1200 1400 1600 1800 2000
94 189 283 378 472 566 661 755 850 944
Cfm
L/s
VAV-PRC008-EN
Airflow
FPP 11

Fan-Powered
Parallel
ECM Data—
Fan Curves
Discharge Static Pressure
Pa In. wg VPxF 06SQ—ECM
125
100
75
50
0.50
0.40
0.30
0.20
530 cfm min
(250 L/s)
Notes:
1. ECMs (Electrically Commutated
Motors) are ideal for systems seeking
maximum motor efficiency.
2. When attenuator is required, add inlet
attenuator pressure to discharge
static pressure for final fan
performance.
25
0.10
400 600 800 1000 1200 1400 1600 1800 2000 2200
189 283 378 472 566 661 755 850 944 1038
Airflow
Cfm
L/s
VPCF and VPEF maximum
Minimum
1-row coil maximum
2-row coil maximum
FPP 12
VAV-PRC008-EN

Fan-Powered
Parallel
Performance
Data—Hot Water
Coil (I-P)
Fan Size 02SQ (I-P)
Water
Pressure
Airflow (Cfm)
Rows Gpm Drop (ft) 100 150 200 250 300 350 400 450 500 550 600
1-Row 0.5 0.22 — — — — — — — — — — —
Capacity 1.0 0.76 9.20 11.49 13.14 14.45 15.56 16.52 17.38 18.16 18.93 19.64 20.30
MBH 2.0 2.65 9.79 12.50 14.52 16.17 17.60 18.87 20.02 21.09 22.08 23.02 23.90
3.0 5.54 10.01 12.87 15.04 16.84 18.39 19.79 21.07 22.26 23.38 24.44 25.44
4.0 9.39 10.12 13.07 15.32 17.19 18.82 20.29 21.64 22.90 24.09 25.22 26.29
5.0 14.17 10.19 13.19 15.49 17.41 19.09 20.60 22.00 23.30 24.54 25.71 26.83
2-Row 1.0 1.30 9.97 13.83 17.07 19.81 22.13 24.13 25.85 27.35 28.67 29.83 30.86
Capacity 2.0 4.41 10.29 14.58 18.39 21.78 24.82 27.56 30.03 32.27 34.31 36.18 37.90
MBH 3.0 9.08 10.40 14.83 18.83 22.46 25.76 28.77 31.54 34.09 36.45 38.63 40.67
4.0 15.18 10.45 14.95 19.05 22.80 26.23 29.40 32.32 35.04 37.56 39.92 42.13
5.0 22.66 10.48 15.03 19.18 23.00 26.52 29.78 32.80 35.62 38.25 40.72 43.03
Notes:
1. Fouling Factor = 0.0005 °F ft² h/Btu.
2. Capacity based on 70°F entering air temperature and 180°F entering water temperature.
Fan Sizes 03SQ–05SQ (I-P)
Water
Pressure
Airflow (Cfm)
Rows Gpm Drop (ft) 150 300 450 600 750 900 1050 1200 1350 1500 1650
1-Row 1.0 0.28 — — — — — — — — — — —
Capacity 2.0 1.02 13.14 18.63 22.21 25.01 27.36 29.41 31.30 33.00 34.54 35.94 37.23
MBH 3.0 2.22 13.62 19.69 23.78 27.05 29.86 32.34 34.58 36.63 38.52 40.31 41.99
4.0 3.85 13.88 20.27 24.65 28.20 31.28 34.03 36.54 38.84 40.98 42.99 44.86
5.0 5.92 14.04 20.64 25.21 28.95 32.21 35.14 37.82 40.31 42.62 44.80 46.85
6.0 8.41 14.14 20.89 25.59 29.46 32.85 35.92 38.73 41.35 43.80 46.10 48.28
7.0 11.32 14.22 21.08 25.88 29.85 33.34 36.50 39.41 42.13 44.67 47.08 49.36
8.0 14.65 14.28 21.22 26.10 30.15 33.71 36.95 39.94 42.73 45.36 47.85 50.21
9.0 18.40 14.33 21.33 26.28 30.38 34.01 37.31 40.36 43.22 45.91 48.46 50.89
10.0 22.57 14.37 21.42 26.42 30.57 34.25 37.60 40.71 43.62 46.36 48.97 51.45
2-Row 1.0 0.35 — — — — — — — — — — —
Capacity 2.0 1.28 15.08 25.87 33.70 39.58 44.13 47.77 50.73 53.20 55.29 57.08 58.63
MBH 3.0 2.74 15.36 27.00 35.94 42.99 48.69 53.40 57.36 60.74 63.66 66.21 68.46
4.0 4.72 15.50 27.57 37.11 44.82 51.20 56.57 61.15 65.13 68.60 71.68 74.42
5.0 7.20 15.59 27.92 37.83 45.97 52.78 58.59 63.60 67.99 71.85 75.30 78.39
6.0 10.18 15.64 28.15 38.31 46.74 53.87 59.99 65.32 70.00 74.15 77.87 81.23
7.0 13.64 15.68 28.31 38.66 47.31 54.67 61.02 66.58 71.49 75.86 79.80 83.36
8.0 17.59 15.71 28.44 38.93 47.74 55.28 61.81 67.55 72.64 77.19 81.29 85.01
9.0 22.03 15.74 28.54 39.13 48.08 55.76 62.44 68.32 73.55 78.24 82.48 86.33
10.0 26.94 15.76 28.62 39.30 48.35 56.15 62.95 68.95 74.30 79.10 83.45 87.42
Notes:
1. Fouling Factor = 0.0005 °F ft² h/Btu.
2. Capacity based on 70°F entering air temperature and 180°F entering water temperature.
Fan Sizes 06SQ & 07SQ (I-P)
Water
Pressure
Airflow (Cfm)
Rows Gpm Drop (ft) 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900
1-Row 0.5 0.11 — — — — — — — — — — —
Capacity 1.0 0.36 — — — — — — — — — — —
MBH 2.0 1.24 32.17 33.60 34.93 36.17 37.34 38.43 39.47 40.45 41.38 42.27 43.12
3.0 2.57 35.12 36.76 38.31 39.77 41.16 42.50 43.81 45.07 46.27 47.42 48.53
4.0 4.32 36.78 38.60 40.32 41.95 43.51 45.01 46.44 47.82 49.14 50.42 51.68
5.0 6.49 37.86 39.79 41.63 43.38 45.05 46.66 48.21 49.70 51.14 52.53 53.88
6.0 9.04 38.61 40.63 42.55 44.38 46.14 47.83 49.46 51.04 52.56 54.04 55.47
7.0 11.99 39.17 41.25 43.23 45.13 46.95 48.70 50.40 52.04 53.62 55.16 56.66
2-Row 1.0 0.68 — — — — — — — — — — —
Capacity 2.0 2.24 51.03 53.38 55.46 57.32 58.98 60.47 61.83 63.07 64.20 65.24 66.20
MBH 3.0 4.57 56.65 59.74 62.53 65.06 67.37 69.48 71.42 73.20 74.86 76.40 77.83
4.0 7.59 59.73 63.27 66.50 69.46 72.18 74.69 77.02 79.18 81.19 83.08 84.84
5.0 11.29 61.67 65.51 69.04 72.28 75.29 78.08 80.67 83.09 85.36 87.50 89.50
6.0 15.64 63.00 67.05 70.79 74.24 77.45 80.44 83.24 85.86 88.31 90.63 92.81
7.0 20.61 63.97 68.18 72.07 75.69 79.05 82.19 85.14 87.90 90.51 92.96 95.28
Notes:
1. Fouling Factor = 0.0005 °F ft² h/Btu.
2. Capacity based on 70°F entering air temperature and 180°F entering water temperature.
VAV-PRC008-EN
FPP 13

Fan-Powered
Parallel
Performance
Data—Hot Water
Coil (I-P)
Water Coil Notes (I-P)
1. Fouling Factor = 0.0005.
2. The off-coil temperature of the hot water coil on parallel fan-powered units must not exceed 140°F when mounted on
plenum inlet.
3. The following equations may be used in calculating Leaving Air Temperature (LAT) and Water Temperature
Difference (WTD).
( ) ( )
LAT = EAT +
MBH x 921.7
WTD = EWT - LWT =
Cfm
Gpm
4. Capacity based on 70°F entering air temperature and 180°F entering water temperature. Refer to correction factors for
different entering conditions.
Temperature Correction Factors for Water Pressure Drop (ft)
Average Water Temperature 200 190 180 170 160 150 140 130 120 110
Correction Factor 0.970 0.985 1.000 1.020 1.030 1.050 1.080 1.100 1.130 1.150
Temperature Correction Factors for Coil Capacity (MBH)
Entering Water Minus Entering Air 40 50 60 70 80 90 100 110 120 130
Correction Factor 0.355 0.446 0.537 0.629 0.722 0.814 0.907 1.000 1.093 1.187
FPP 14
VAV-PRC008-EN

Fan-Powered
Parallel
Performance
Data—Hot Water
Coil (SI)
Fan Size 02SQ (SI)
Water
Pressure
Airflow (L/s)
Rows L/s Drop (kPa) 47 71 94 118 142 165 189 212 236 260 283
1-Row 0.03 0.66 — — — — — — — — — — —
Capacity 0.06 2.26 2.69 3.37 3.85 4.24 4.56 4.84 5.09 5.32 5.55 5.76 5.76
kW 0.13 7.91 2.87 3.66 4.26 4.74 5.16 5.53 5.87 6.18 6.47 6.75 6.75
0.19 16.57 2.93 3.77 4.41 4.93 5.39 5.80 6.18 6.52 6.85 7.16 7.16
0.25 28.08 2.97 3.83 4.49 5.04 5.52 5.95 6.34 6.71 7.06 7.39 7.39
0.32 42.34 2.99 3.87 4.54 5.10 5.59 6.04 6.45 6.83 7.19 7.53 7.53
2-Row 0.06 3.89 2.92 4.05 5.00 5.80 6.49 7.07 7.58 8.02 8.40 8.74 8.74
Capacity 0.13 13.19 3.02 4.27 5.39 6.38 7.27 8.08 8.80 9.46 10.06 10.60 10.60
kW 0.19 27.13 3.05 4.35 5.52 6.58 7.55 8.43 9.24 9.99 10.68 11.32 11.32
0.25 45.38 3.06 4.38 5.58 6.68 7.69 8.62 9.47 10.27 11.01 11.70 11.70
0.32 67.73 3.07 4.40 5.62 6.74 7.77 8.73 9.61 10.44 11.21 11.93 11.93
Notes:
1. Fouling Factor = 0.0005.
2. Capacity based on 21°C entering air temperature and 82°C entering water temperature.
Fan Sizes 03SQ–05SQ (SI)
Water
Pressure
Airflow (L/s)
Rows L/s Drop (kPa) 71 142 212 283 354 425 495 566 637 708 779
1-Row 0.06 0.82 — — — — — — — — — — —
Capacity 0.13 3.06 3.85 5.46 6.51 7.33 8.02 8.62 9.17 9.67 10.12 10.53 10.53
kW 0.19 6.63 3.99 5.77 6.97 7.93 8.75 9.48 10.14 10.74 11.29 11.81 11.81
0.25 11.51 4.07 5.94 7.22 8.27 9.17 9.97 10.71 11.38 12.01 12.60 12.60
0.32 17.68 4.11 6.05 7.39 8.48 9.44 10.30 11.08 11.81 12.49 13.13 13.13
0.38 25.13 4.15 6.12 7.50 8.64 9.63 10.53 11.35 12.12 12.84 13.51 13.51
0.44 33.83 4.17 6.18 7.58 8.75 9.77 10.70 11.55 12.35 13.09 13.80 13.80
0.50 43.79 4.19 6.22 7.65 8.83 9.88 10.83 11.71 12.52 13.29 14.02 14.02
0.57 55.00 4.20 6.25 7.70 8.90 9.97 10.93 11.83 12.67 13.46 14.20 14.20
0.63 67.45 4.21 6.28 7.74 8.96 10.04 11.02 11.93 12.78 13.59 14.35 14.35
2-Row 0.06 1.06 — — — — — — — — — — —
Capacity 0.13 3.83 4.42 7.58 9.88 11.60 12.93 14.00 14.87 15.59 16.20 16.73 16.73
kW 0.19 8.20 4.50 7.91 10.53 12.60 14.27 15.65 16.81 17.80 18.66 19.40 19.40
0.25 14.11 4.54 8.08 10.88 13.14 15.01 16.58 17.92 19.09 20.11 21.01 21.01
0.32 21.52 4.57 8.18 11.09 13.47 15.47 17.17 18.64 19.92 21.06 22.07 22.07
0.38 30.42 4.58 8.25 11.23 13.70 15.79 17.58 19.14 20.51 21.73 22.82 22.82
0.44 40.78 4.60 8.30 11.33 13.87 16.02 17.88 19.51 20.95 22.23 23.39 23.39
0.50 52.59 4.61 8.33 11.41 13.99 16.20 18.12 19.80 21.29 22.62 23.82 23.82
0.57 65.84 4.61 8.36 11.47 14.09 16.34 18.30 20.02 21.56 22.93 24.17 24.17
0.63 80.52 4.62 8.39 11.52 14.17 16.45 18.45 20.21 21.77 23.18 24.46 24.46
Notes:
1. Fouling Factor = 0.0005.
2. Capacity based on 21°C entering air temperature and 82°C entering water temperature.
Fan Sizes 06SQ & 07SQ (SI)
Water
Pressure
Airflow (L/s)
Rows L/s Drop (kPa) 425 472 519 566 613 661 708 755 802 849 897
1-Row 0.03 0.33 — — — — — — — — — — —
Capacity 0.06 1.09 — — — — — — — — — — —
kW 0.13 3.71 9.43 9.85 10.24 10.60 10.94 11.26 11.57 11.86 12.13 12.39 12.39
0.19 7.68 10.29 10.77 11.23 11.66 12.06 12.46 12.84 13.21 13.56 13.90 13.90
0.25 12.92 10.78 11.31 11.82 12.30 12.75 13.19 13.61 14.01 14.40 14.78 14.78
0.32 19.39 11.10 11.66 12.20 12.71 13.20 13.67 14.13 14.57 14.99 15.40 15.40
0.38 27.04 11.32 11.91 12.47 13.01 13.52 14.02 14.50 14.96 15.40 15.84 15.84
0.44 35.84 11.48 12.09 12.67 13.23 13.76 14.27 14.77 15.25 15.72 16.17 16.17
2-Row 0.06 2.02 — — — — — — — — — — —
Capacity 0.13 6.70 14.96 15.64 16.25 16.80 17.28 17.72 18.12 18.48 18.82 19.12 19.12
kW 0.19 13.65 16.60 17.51 18.33 19.07 19.74 20.36 20.93 21.45 21.94 22.39 22.39
0.25 22.70 17.51 18.54 19.49 20.36 21.15 21.89 22.57 23.20 23.80 24.35 24.35
0.32 33.76 18.07 19.20 20.23 21.18 22.06 22.88 23.64 24.35 25.02 25.64 25.64
0.38 46.74 18.46 19.65 20.75 21.76 22.70 23.58 24.39 25.16 25.88 26.56 26.56
0.44 61.61 18.75 19.98 21.12 22.18 23.17 24.09 24.95 25.76 26.52 27.24 27.24
Notes:
1. Fouling Factor = 0.0005.
2. Capacity based on 21°C entering air temperature and 82°C entering water temperature.
VAV-PRC008-EN
FPP 15

Fan-Powered
Parallel
Performance
Data—Hot Water
Coil (SI)
Water Coil Notes (SI)
1. Fouling Factor = 0.0005.
2. The off-coil temperature of the hot water coil on parallel fan-powered units must not exceed 60°C when mounted on
plenum inlet.
3. The following equations may be used in calculating Leaving Air Temperature (LAT) and Water Temperature
Difference (WTD).
LAT = EAT kW x 0.83
+( L/s )
WTD = EWT - LWT =( (4.19)L/s
kW
)
4. Capacity based on 21°C entering air temperature and 82°C entering water temperature. Refer to correction factors for
different entering conditions.
Temperature Correction Factors for Water Pressure Drop (kPa)
Average Water Temperature 93 88 82 77 71 66 60 54 49 43
Correction Factor 0.970 0.985 1.000 1.020 1.030 1.050 1.080 1.100 1.130 1.150
Temperature Correction Factors for Coil Capacity (kW)
Entering Water Minus Entering Air 22 27 33 38 44 50 55 61 67 72
Correction Factor 0.355 0.446 0.537 0.629 0.722 0.814 0.907 1.000 1.093 1.187
FPP 16
VAV-PRC008-EN

Fan-Powered
Parallel
Performance
Data—
Electrical Data
PSC Motor Units—Electric Coil kW Guidelines – Minimum to Maximum (VPEF)
Fan Single-Phase Voltage Three-Phase Voltage
Size Stages 120V 208V 240V 277V 347V 480V 208V 480V 600V
02SQ 1 0.5–5.0 0.5–6.0 0.5–6.0 0.5–6.0 0.5–6.0 0.5–6.0 0.5–6.0 1.0–6.0 1.5–6.0
2 0.5–5.0 0.5–6.0 0.5–6.0 1.0–6.0 1.0–6.0 1.0–6.0 1.0–6.0 2.0–6.0 3.0–6.0
3* 1.0–5.0 1.0–6.0 1.0–6.0 1.0–6.0 1.5–6.0 1.5–6.0 1.5–6.0 3.0–6.0 4.5–6.0
03SQ 1 0.5–5.0 0.5–9.0 0.5–10.0 0.5–11.0 0.5–11.0 0.5–11.0 0.5–11.0 1.0–11.0 1.5–11.0
2 0.5–5.0 0.5–9.0 0.5–10.0 1.0–11.0 1.0–11.0 1.0–11.0 1.0–11.0 2.0–11.0 3.0–11.0
3* 1.0–5.0 1.0–9.0 1.0–10.0 1.0–11.0 1.5–11.0 1.5–11.0 1.5–11.0 3.0–11.0 4.5–11.0
04SQ 1 0.5–4.5 0.5–8.0 0.5–10.0 0.5–12.0 0.5–14.0 0.5–14.0 0.5–14.0 1.0–14.0 1.5–14.0
2 0.5–4.5 0.5–8.0 0.5–10.0 1.0–12.0 1.0–14.0 1.0–14.0 1.0–14.0 2.0–14.0 3.0–14.0
3* 1.0–4.5 1.0–8.0 1.0–10.0 1.0–12.0 1.5–14.0 1.5–14.0 1.5–14.0 3.0–14.0 4.5–14.0
05SQ 1 0.5–4.5 0.5–8.0 0.5–9.0 0.5–12.0 0.5–15.0 0.5–18.0 0.5–14.0 1.0–18.0 1.5–18.0
2 0.5–4.5 0.5–8.0 0.5–9.0 1.0–12.0 1.0–15.0 1.0–18.0 1.0–14.0 2.0–18.0 3.0–18.0
3* 1.0–4.5 1.0–8.0 1.0–9.0 1.0–12.0 1.5–15.0 1.5–18.0 1.5–14.0 3.0–18.0 4.5–18.0
06SQ 1 — 0.5–9.0 — 0.5–12.0 0.5–15.0 0.5–16.0 0.5–15.0 1.0–16.0 1.5–16.0
2 — 0.5–9.0 — 1.0–12.0 1.0–15.0 1.0–16.0 1.0–15.0 2.0–16.0 3.0–16.0
3* — 1.0–9.0 — 1.0–12.0 1.5–15.0 1.5–16.0 1.5–15.0 3.0–16.0 4.5–16.0
07SQ 1 — 0.5–8.0 — 0.5–11.0 0.5–15.0 0.5–20.0 0.5–14.0 1.0–20.0 1.5–20.0
2 — 0.5–8.0 — 1.0–11.0 1.0–15.0 1.0–20.0 1.0–14.0 2.0–20.0 3.0–20.0
3* — 1.0–8.0 — 1.0–11.0 1.5–15.0 1.5–20.0 1.5–14.0 3.0–20.0 4.5–18.0
*Three stages of electric heat available only with pneumatic controls.
ECM Units—Electric Coil kW Guidelines – Minimum to Maximum (VPEF)
Fan Single-Phase Voltage Three-Phase Voltage
Size Stages 120V 208V 240V 277V 347V 480V 208V 480V 600V
03SQ 1 0.5–4.5 0.5–8.0 0.5–10.0 0.5–11.0 — 0.5–11.0 0.5–11.0 1.0–11.0 —
2 0.5–4.5 0.5–8.0 0.5–10.0 1.0–11.0 — 1.0–11.0 1.0–11.0 2.0–11.0 —
3 1.0–4.5 1.0–8.0 1.0–10.0 1.0–11.0 — 1.5–11.0 1.5–11.0 3.0–11.0 —
04SQ 1 0.5–4.5 0.5–8.0 0.5–9.0 0.5–12.0 — 0.5–14.0 0.5–14.0 1.0–14.0 —
2 0.5–4.5 0.5–8.0 0.5–9.0 1.0–12.0 — 1.0–14.0 1.0–14.0 2.0–14.0 —
3 1.0–4.5 1.0–8.0 1.0–9.0 1.0–12.0 — 1.5–14.0 1.5–14.0 3.0–14.0 —
05SQ 1 0.5–4.0 0.5–7.0 0.5–8.0 0.5–11.0 — 0.5–18.0 0.5–12.0 1.0–18.0 —
2 0.5–4.0 0.5–7.0 0.5–8.0 1.0–11.0 — 1.0–18.0 1.0–12.0 2.0–18.0 —
3 1.0–4.0 1.0–7.0 1.0–8.0 1.0–11.0 — 1.5–18.0 1.5–12.0 3.0–18.0 —
06SQ 1 0.5–4.0 0.5–7.0 0.5–8.0 0.5–11.0 — 0.5–16.0 0.5–12.0 1.0–16.0 —
2 0.5–4.0 0.5–7.0 0.5–8.0 1.0–11.0 — 1.0–16.0 1.0–12.0 2.0–16.0 —
3 1.0–4.0 1.0–7.0 1.0–8.0 1.0–11.0 — 1.5–16.0 1.5–12.0 3.0–16.0 —
Notes:
1. Coils available with 24-VAC magnetic or mercury contactors, load carrying P.E. switches, and P.E. switch with magnetic or mercury contactors.
2. Available kW increments are by 0.5 from 0.5 kW to 8.0 kW, by 1.0 kW from 9.0 to 18.0 kW, and by 2.0 kW from 18.0 to 20.0 kW.
3. Each stage will be equal in kW output.
4. All heaters contain an auto reset thermal cutout and a manual reset cutout .
5. The current amp draw for the heater elements is calculated by the formula on the next page.
6. Recommended coil temperature rise = 20° to 30°F (-7° to -1°C). Maximum temperature rise = 55°F (12°C).
7. Heaters should not operate at cfms below the nameplate minimum.
8. Only two stages of electric reheat available with Trane controls (ECM only).
Fan Electrical Performance (PSC)
Maximum Fan Motor Amperage (FLA)
Fan Size HP 115 VAC 208 VAC 277 VAC
02SQ 1/8 1.6 — 0.7
03SQ 1/3 4.3 — 1.6
04SQ 1/3 5.5 — 2.0
05SQ 1/2 6.7 — 2.4
06SQ 1/2 — 4.6 3.8
07SQ 1 — 6.6 4.7
Notes:
1. Electric Heat Units - Units with fan sizes 02SQ to 05SQ
and a primary voltage of 208/60/1, 208/60/3, or 240/60/1
have 115/60/1 VAC fan motors. Fan sizes 06SQ and
07SQ with the same voltages, have 208/60/1 VAC motors.
2. Electric Heat Units - Units with primary voltage of
277/60/1, 480/60/1 or 480/60/3 use 277 VAC fan motors.
3. Electric Heat Units - Units with primary voltage of
347/60/1 or 575/60/3 use 347 VAC fan motors.
4. With 380/50/3 and 230/50/1, use 230/50 motors.
Fan Electrical Performance (ECM)
Maximum Fan Motor Amperage (FLA)
Fan Size HP 115 VAC 277 VAC
03SQ 1/3 4.5 2.4
04SQ 1/2 6.5 3.5
05SQ 1 10.1 5.4
06SQ 1 9.5 5.1
Notes:
1. Electric heat units—units with primary voltages of
208/60/1, 208/60/3, or 240/60/1 have 115-VAC fan motors.
2. Electric heat units—units with primary voltages of
277/60/1, 480/60/1, or 480/60/3 have 277-VAC fan motors.
3. 347/60/1 and 230/50/1 voltage motors not available with
ECMs.
VAV-PRC008-EN
FPP 17

Fan-Powered
Parallel
Performance
Data—
Electrical Data
Formulas
Minimum Circuit Ampacity (MCA) Equation
• MCA = 1.25 x (Σ motor amps + heater amps)
Motor amps is the sum of all motor current draws if more
than one is used in the unit.
Maximum Overcurrent Protection (MOP) Equation
• MOP = (2.25 x motor1 amps) + motor2 amps + heater amps
motor1 amps = current draw of largest motor
motor2 amps = sum of current of all other motors used in
unit
General Sizing Rules:
• If MOP = 15, then fuse size = 15
• If MOP = 19, then fuse size = 15 with one exception. If heater
amps x 1.25 > 15, then fuse size = 20.
• If MOP ≤ MCA, then choose next fuse size greater than MCA.
• Control fusing not applicable.
• Standard Fuse Sizes: 15, 20, 25, 30, 35, 40, 45, 50, and 60.
Example:
A model VPEF, electric reheat unit size 10-05SQ has 480/3 phase, 12 kW
electric reheat with 2 stages and 277-Volt motor.
For MOP of fan-powered unit:
12 kW - 480/3 heater 12 x 1000 = 14.45 amps
480 x 1.73
MCA = (2.4 + 14.45) x 1.25 = 21.06, MOP = (2.25 x 2.4) + 14.45 = 19.9.
Since MOP ≤ MCA, then MOP = 25.
For total current draw of unit:
12 kW—480/3 heater 12 x 1000 = 14.45
480 x 1.73
Two heat outputs (2 stages) @0.5 amps max each = 1.00
Motor amps: 277 V (Fan size 0517) = 2.4
18.35 amps max
Useful formulas:
Cfm x ATD
kW =
3145
kW = 1214 x L/s x ATD
kW x 1000
3φamps =
Primary Voltage x √ 3
1φamps =
kW x 1000
Primary Voltage
ATD =
kW x 3145
Cfm
ATD =
kW
1214 x L/s
Minimum Unit Electric
Heat Cfm Guidelines (PSC)
Unit
Cfm
kW 02SQ 03SQ 04SQ 05SQ 06SQ 07SQ
0.5 118 200 315 350 533 585
1 118 200 315 350 533 585
1.5 118 200 315 350 533 585
2 118 200 315 350 533 585
2.5 146 200 315 350 533 585
3 174 200 315 350 533 585
3.5 201 200 315 350 533 585
4 229 230 315 350 533 585
4.5 257 260 315 350 533 585
5 285 290 315 350 533 585
5.5 312 315 315 350 533 585
6 340 350 350 350 533 585
6.5 — 375 375 375 533 585
7 — 400 400 400 533 585
7.5 — 430 430 430 533 585
8 — 460 460 460 533 585
9 — 515 515 515 589 633
10 — 575 575 575 645 682
11 — 630 630 630 701 730
12 — — 690 690 758 779
13 — — 745 745 814 827
14 — — 810 810 870 876
15 — — — 860 926 924
16 — — — 920 982 972
17 — — — 973 — 1021
18 — — — 1030 — 1069
20 — — — — — 1166
Minimum Unit Electric
Heat L/s Guidelines (PSC)
Unit
L/s
kW 02SQ 03SQ 04SQ 05SQ 06SQ 07SQ
0.5 56 94 149 165 252 276
1 56 94 149 165 252 276
1.5 56 94 149 165 252 276
2 56 94 149 165 252 276
2.5 69 94 149 165 252 276
3 82 94 149 165 252 276
3.5 95 94 149 165 252 276
4 108 109 149 165 252 276
4.5 121 123 149 165 252 276
5 134 137 149 165 252 276
5.5 147 149 149 165 252 276
6 160 165 165 165 252 276
6.5 — 177 177 177 252 276
7 — 189 189 189 252 276
7.5 — 203 203 203 252 276
8 — 217 217 217 252 276
9 — 243 243 243 278 299
10 — 271 271 271 305 322
11 — 297 297 297 331 345
12 — — 326 326 358 367
13 — — 352 352 384 390
14 — — 382 382 410 413
15 — — — 406 437 436
16 — — — 434 463 459
17 — — — 459 — 482
18 — — — 486 — 505
20 — — — — — 550
FPP 18
VAV-PRC008-EN

Fan-Powered
Parallel
Performance
Data—
Electrical Data
Minimum Unit Electric
Heat Cfm Guidelines (ECM)
Unit
Cfm
kW 03SQ 04SQ 05SQ 06SQ
0.5 200 315 350 560
1 200 315 350 560
1.5 200 315 350 560
2 200 315 350 560
2.5 200 315 350 560
3 200 315 350 560
3.5 200 315 350 560
4 230 315 350 560
4.5 260 315 350 560
5 290 315 350 560
5.5 315 315 350 560
6 350 350 350 560
6.5 375 375 375 560
7 400 400 400 560
7.5 430 430 430 560
8 460 460 460 560
9 515 515 515 604
10 575 575 575 649
11 630 630 630 693
12 — 690 690 738
13 — 745 745 782
14 — 810 810 826
15 — — 860 871
16 — — 920 915
17 — — 973 —
18 — — 1030 —
Minimum Unit Electric
Heat L/s Guidelines (ECM)
Unit
L/s
kW 03SQ 04SQ 05SQ 06SQ
0.5 94 149 165 264
1 94 149 165 264
1.5 94 149 165 264
2 94 149 165 264
2.5 94 149 165 264
3 94 149 165 264
3.5 94 149 165 264
4 109 149 165 264
4.5 123 149 165 264
5 137 149 165 264
5.5 149 149 165 264
6 165 165 165 264
6.5 177 177 177 264
7 189 189 189 264
7.5 203 203 203 264
8 217 217 217 264
9 243 243 243 285
10 271 271 271 306
11 297 297 297 327
12 — 326 326 348
13 — 352 352 369
14 — 382 382 390
15 — — 406 411
16 — — 434 432
17 — — 459 —
18 — — 486 —
VAV-PRC008-EN
FPP 19

Fan-Powered
Parallel
Performance
Data—
Acoustics
Discharge Sound Power (dB)
Valve Only
Discharge Sound Power (dB)
Fan Inlet 0.5" ∆Ps 1.0" ∆Ps 2.0" ∆Ps 3.0" ∆Ps
Size Size Cfm L/s 2 3 4 5 6 7 2 3 4 5 6 7 2 3 4 5 6 7 2 3 4 5 6 7
02SQ 6 200 94 51 50 44 43 38 30 53 51 48 47 43 39 56 53 54 53 51 50 59 55 57 57 56 56
300 142 56 52 49 48 44 35 58 55 54 53 50 43 60 57 57 56 54 50 62 59 61 59 57 55
400 189 58 53 49 47 42 36 63 59 58 57 54 46 64 61 60 61 58 52 65 63 63 63 60 56
500 236 60 56 53 51 47 41 66 62 60 59 55 47 67 64 64 65 62 55 69 67 66 68 65 58
02SQ 8 350 165 52 48 46 45 40 33 56 53 51 48 46 45 59 57 56 53 52 51 61 59 59 56 55 55
520 245 57 53 50 49 44 37 60 57 55 52 50 47 62 61 60 57 55 52 64 63 63 60 58 56
700 330 62 59 55 53 49 42 64 62 60 57 54 49 66 66 65 62 59 54 68 68 67 65 62 57
900 425 66 63 59 57 52 45 69 66 64 61 57 52 70 69 69 66 62 57 72 71 71 68 65 60
02SQ 10 550 260 59 54 52 52 49 39 63 59 57 57 55 47 67 64 62 62 59 54 69 66 65 65 62 58
820 387 62 57 56 56 54 44 67 63 61 61 59 51 72 69 67 67 65 58 74 71 70 70 67 61
1100 519 65 60 59 59 58 48 69 66 64 65 63 55 75 71 70 70 68 60 78 74 73 74 71 64
1400 661 67 64 62 62 60 51 72 69 67 67 65 57 78 74 72 73 71 63 81 77 76 76 74 67
03SQ 6 100 47 44 44 41 37 33 30 45 45 44 39 37 39 46 47 47 43 45 47 47 47 47 45 49 53
200 94 48 47 43 40 35 29 51 50 47 44 41 40 53 52 52 48 47 48 54 54 54 50 51 54
300 142 53 50 46 43 36 32 56 55 51 47 44 40 58 58 56 52 50 49 59 59 59 55 54 54
400 189 55 52 48 44 38 34 60 58 54 50 46 42 62 62 59 55 52 49 64 63 62 58 56 54
600 283 59 58 56 50 46 44 61 60 57 53 48 46 69 67 64 61 56 52 71 69 68 64 60 56
03SQ 8 175 83 44 44 42 39 34 30 46 46 44 41 41 42 49 48 47 45 47 49 51 49 49 48 51 53
04SQ 350 165 48 47 44 41 35 31 52 51 49 46 43 41 56 56 55 52 51 51 58 57 58 54 54 55
525 248 53 52 49 47 42 34 57 56 54 51 47 42 61 60 59 56 53 51 62 62 62 58 56 56
700 330 58 56 53 51 47 40 60 59 57 55 51 45 64 64 63 60 56 52 66 66 66 62 59 57
1050 496 64 63 60 59 51 46 68 67 65 63 59 53 69 69 68 67 63 57 71 71 71 69 65 60
03SQ 10 275 130 48 47 46 44 38 32 50 50 49 47 46 47 52 53 53 51 50 49 54 55 56 54 54 53
04SQ 550 260 53 51 50 47 42 35 56 56 54 51 48 43 59 61 60 57 55 54 61 63 63 60 58 56
05SQ 825 389 57 55 53 50 46 39 60 60 58 56 52 46 63 65 64 60 58 53 66 68 68 64 62 59
1100 519 60 59 57 54 50 43 63 63 62 59 55 49 68 68 67 64 61 56 70 70 70 67 64 60
1640 774 65 65 63 59 54 48 69 69 68 64 61 55 72 73 72 69 66 60 75 76 75 73 70 64
03SQ 12 385 182 48 47 47 41 38 34 52 51 51 46 43 41 55 56 57 52 50 48 55 58 60 55 54 53
04SQ 775 366 54 52 52 49 43 37 59 58 57 54 50 47 63 64 63 59 55 52 65 66 66 61 58 55
05SQ 1160 547 58 56 55 51 47 41 63 61 60 57 54 49 69 67 67 64 61 55 72 70 70 67 64 59
1550 732 61 59 58 54 50 44 66 64 63 60 57 51 73 70 69 67 64 58 76 74 73 71 68 62
2350 1105 66 65 65 60 56 50 71 70 69 65 61 55 77 74 73 71 68 62 80 78 77 75 72 66
05SQ 14 525 248 51 49 48 45 41 35 55 53 53 50 48 44 59 58 59 55 53 52 60 61 62 58 56 55
1050 496 57 55 54 51 51 40 63 61 60 57 54 49 66 67 66 62 59 56 68 69 69 65 62 58
1575 743 60 58 57 54 52 44 67 64 63 60 57 52 71 71 70 67 63 59 73 74 73 70 67 62
2100 991 63 61 60 57 53 47 68 67 66 62 59 56 75 73 72 70 66 61 78 77 76 73 70 65
3200 1510 68 67 67 63 59 55 73 71 71 67 64 59 79 77 76 73 70 65 83 81 79 77 74 69
06SQ 10 550 260 50 48 46 43 38 31 53 53 51 49 45 41 57 59 58 54 52 54 59 62 62 58 56 54
07SQ 800 378 54 52 50 46 41 34 57 57 55 52 48 42 61 62 61 57 54 53 63 65 65 61 59 56
1000 472 57 55 53 49 44 36 60 60 58 54 50 43 64 64 63 60 56 52 66 67 67 64 61 57
1200 566 59 58 56 52 46 39 63 63 61 57 52 46 67 67 66 62 58 53 69 69 69 66 62 58
1350 637 61 60 58 54 48 42 65 65 63 59 54 48 69 69 68 64 60 54 71 71 71 67 63 59
06SQ 12 800 378 60 55 55 54 51 42 65 61 61 61 59 51 68 66 65 66 64 57 70 69 68 69 67 60
07SQ 1100 519 62 56 56 54 52 43 69 64 63 63 60 53 72 70 69 70 67 60 74 73 72 73 71 64
1400 661 63 58 58 54 52 44 71 66 64 64 62 54 76 72 71 72 70 62 78 76 74 76 74 66
1700 802 64 60 60 55 52 44 72 68 66 65 62 55 79 74 72 73 71 63 81 78 76 77 76 68
2000 944 66 62 61 55 52 46 73 69 67 65 63 55 81 76 74 74 71 64 83 80 78 78 77 69
06SQ 14 1100 519 57 53 53 51 48 41 62 59 58 57 54 48 66 65 64 61 60 55 70 70 69 64 62 59
07SQ 1600 755 61 57 56 55 52 45 66 63 62 61 58 52 71 69 68 66 64 59 74 72 71 69 67 62
2100 991 64 60 60 57 55 47 69 66 66 64 61 55 74 71 71 69 67 61 77 75 74 72 70 65
2500 1180 67 63 63 60 57 50 71 68 67 66 63 56 77 73 72 71 69 63 80 76 76 74 72 66
3000 1416 70 66 66 63 60 53 74 70 69 68 65 58 80 75 74 73 71 65 84 78 78 76 74 68
06SQ 16 1400 661 59 56 54 54 51 43 64 62 61 60 57 52 69 69 67 65 62 57 72 74 72 67 65 61
07SQ 2100 991 61 59 58 56 54 46 68 65 63 62 60 55 73 72 71 69 67 62 75 75 74 72 70 65
2700 1274 64 62 61 59 56 49 70 67 66 65 62 57 76 73 72 71 69 64 79 77 76 75 73 68
3400 1605 67 64 64 62 58 52 72 69 68 66 64 58 79 74 74 72 70 65 83 78 77 76 74 69
4000 1888 70 67 67 64 61 55 74 71 70 68 65 60 81 76 75 74 71 66 86 79 78 77 75 70
1. All data are measured in accordance with Industry Standard ARI 880-98.
2. All sound power levels, dB re: 10 -12 Watts.
3. Where ∆Ps is inlet static pressure minus discharge static pressure.
FPP 20
VAV-PRC008-EN

Fan-Powered
Parallel
Performance
Data—
Acoustics
Radiated Sound Power (dB)
Valve Only
Radiated Sound Power (dB)
Fan Inlet 0.5" ∆Ps 1.0" ∆Ps 2.0" ∆Ps 3.0" ∆Ps
Size Size Cfm L/s 2 3 4 5 6 7 2 3 4 5 6 7 2 3 4 5 6 7 2 3 4 5 6 7
02SQ 6 200 94 48 40 38 35 31 25 48 44 42 37 33 26 53 48 47 43 38 33 54 50 47 44 41 37
300 142 51 45 42 35 29 24 54 49 46 39 33 26 57 51 50 44 38 32 60 55 53 48 42 37
400 189 54 48 46 38 32 25 58 53 49 42 35 26 61 55 52 47 40 33 63 57 55 49 43 37
500 236 52 50 48 40 33 27 62 56 52 45 37 29 65 59 56 50 42 34 65 60 57 52 45 38
02SQ 8 350 165 53 45 40 37 31 23 55 49 44 39 35 30 60 53 50 45 41 36 62 55 52 48 45 40
520 245 57 49 44 40 34 26 59 53 48 42 37 31 64 57 53 47 43 38 66 59 56 51 46 41
700 330 61 53 48 43 37 29 63 57 52 46 40 33 68 61 57 50 45 40 70 63 60 54 48 42
900 425 66 58 53 47 41 33 68 62 56 50 44 37 72 65 61 53 48 42 73 67 63 56 50 44
02SQ 10 550 260 57 50 44 39 32 25 61 54 48 42 36 28 65 58 52 46 40 34 67 60 56 50 43 38
820 387 59 52 46 41 34 25 64 58 52 46 40 31 69 63 56 51 44 37 71 66 60 54 47 40
1100 519 62 56 50 44 41 26 66 61 54 49 42 33 72 66 60 54 48 39 75 68 63 57 51 42
1400 661 65 60 53 47 44 30 68 64 57 52 45 36 74 69 63 57 50 41 77 71 66 60 53 44
03SQ 6 100 47 49 44 38 37 31 24 50 46 41 41 35 29 52 47 44 46 41 36 53 48 45 48 45 40
200 94 50 44 39 37 31 24 53 48 43 41 36 29 56 51 47 46 42 36 59 53 49 49 45 40
300 142 52 45 40 38 31 25 54 50 45 42 36 30 59 53 50 47 42 37 60 55 53 49 45 40
400 189 54 47 42 39 33 26 57 53 48 44 38 31 61 55 52 48 43 38 62 57 55 50 46 41
600 283 58 53 50 45 40 34 58 56 54 48 42 35 64 61 58 51 45 39 67 62 60 53 48 42
03SQ 8 175 83 52 45 39 36 33 26 54 47 42 41 36 30 57 50 45 46 42 36 59 52 46 49 45 39
04SQ 350 165 57 50 43 38 33 26 59 52 46 42 37 30 61 54 50 47 43 37 63 55 52 50 46 40
525 248 58 51 45 39 34 27 61 55 48 43 38 31 64 57 53 48 44 37 66 58 56 51 47 41
700 330 60 53 47 42 36 30 63 56 51 45 39 33 66 60 55 49 44 37 68 62 58 52 48 41
1050 496 63 59 55 49 42 35 68 62 57 51 45 38 72 65 60 54 48 41 74 67 63 56 50 43
03SQ 10 275 130 55 49 43 38 34 27 57 51 45 42 37 30 58 53 48 47 43 36 59 54 50 50 46 40
04SQ 550 260 59 54 47 40 34 28 61 56 50 45 39 34 63 58 53 51 45 41 64 60 56 54 51 44
05SQ 825 389 61 55 49 42 36 29 63 58 53 46 40 35 66 61 57 51 46 41 69 64 60 54 50 44
1100 519 62 56 50 44 38 32 66 60 54 49 43 37 70 64 59 53 48 43 72 66 62 56 51 46
1640 774 65 61 55 50 43 37 70 65 58 53 46 40 76 69 64 58 51 45 79 72 67 61 55 49
03SQ 12 385 182 52 47 42 40 36 30 55 50 45 43 40 35 59 53 48 47 44 39 61 55 50 50 47 42
04SQ 775 366 59 51 45 40 35 28 63 55 48 43 38 33 66 59 52 48 44 39 69 62 56 52 48 42
05SQ 1160 547 63 54 47 41 35 30 67 58 51 46 39 35 72 63 56 51 45 40 75 67 60 54 49 43
1550 732 66 58 50 43 37 31 71 62 54 48 42 36 75 66 59 53 46 41 78 70 63 56 50 44
2350 1105 69 64 55 49 42 36 74 68 59 52 45 40 79 72 64 57 50 44 82 75 67 60 54 47
05SQ 14 525 248 58 51 45 40 34 27 61 53 48 44 38 31 64 56 51 49 44 37 66 59 54 51 47 40
1050 496 62 56 49 42 37 30 66 59 52 46 42 34 71 63 57 51 46 39 74 66 60 54 49 42
1575 743 65 59 52 44 37 31 70 62 55 48 42 35 75 67 61 54 48 40 78 70 64 57 51 43
2100 991 67 60 54 45 38 33 72 64 58 50 43 36 78 69 63 56 49 43 83 74 68 61 54 46
3200 1510 72 66 59 51 44 38 77 70 63 55 48 42 83 75 68 60 53 47 86 78 71 63 56 50
06SQ 10 550 550 51 44 42 40 37 32 54 49 45 44 42 38 58 55 49 49 48 45 61 58 52 52 52 49
07SQ 800 378 53 48 43 41 37 32 57 52 47 45 42 38 62 58 52 50 48 45 65 61 55 53 52 49
1000 472 55 51 44 42 38 33 59 55 48 46 42 38 65 61 54 51 48 45 68 63 57 54 52 49
1200 566 58 53 47 43 38 33 62 58 51 47 42 38 67 63 56 52 48 45 70 65 59 56 52 49
1350 637 60 55 49 44 39 34 64 60 53 48 43 39 69 65 58 53 49 45 72 67 61 57 53 49
06SQ 12 800 378 58 50 44 40 33 26 62 55 49 45 38 31 66 60 54 50 43 36 68 63 56 52 46 39
07SQ 1100 519 60 52 46 40 33 27 65 58 51 47 40 33 70 64 58 53 46 39 72 66 60 56 50 42
1400 661 62 54 46 40 34 27 67 60 53 48 41 34 73 66 60 55 48 41 75 69 64 58 52 44
1700 802 64 56 48 42 34 28 68 62 54 48 41 35 76 68 61 56 49 42 78 72 66 60 54 46
2000 944 65 58 49 47 36 31 70 63 55 50 42 35 77 70 62 57 50 43 79 73 67 61 55 48
06SQ 14 1100 519 56 49 44 40 32 25 61 55 48 44 38 30 66 61 54 49 43 36 69 66 57 51 45 40
07SQ 1600 755 59 53 47 42 35 27 65 59 52 48 41 33 70 64 58 53 46 39 74 68 61 55 49 42
2100 991 64 57 51 46 38 29 68 61 55 50 43 35 74 67 61 55 49 41 77 70 64 59 52 45
2500 1180 67 59 53 48 40 31 71 63 57 52 44 36 76 68 62 56 50 42 79 72 66 60 54 46
3000 1416 71 62 56 50 42 33 74 66 59 54 46 38 78 70 64 58 51 44 82 74 68 62 56 48
06SQ 16 1400 661 63 54 48 41 36 29 67 59 53 46 42 35 70 66 58 52 48 40 72 70 61 54 50 43
07SQ 2100 991 66 57 51 44 39 32 71 63 56 49 45 38 75 69 63 56 52 44 77 72 66 59 55 47
2700 1274 68 60 54 46 41 34 73 65 59 51 47 40 78 72 66 59 54 47 80 75 69 62 58 50
3400 1605 70 63 57 51 46 42 76 68 61 54 48 42 81 74 68 60 56 48 83 76 70 64 59 52
4000 1888 73 66 60 56 52 50 78 70 63 56 50 45 83 75 70 62 57 50 85 78 72 65 60 53
1. All data are measured in accordance with Industry Standard ARI 880-98.
2. All sound power levels, dB re: 10 -12 Watts.
3. Where ∆Ps is inlet static pressure minus discharge static pressure.
VAV-PRC008-EN
FPP 21

Fan-Powered
Parallel
Performance
Data—
Acoustics
Sound Noise Criteria (NC)
Fan Only
Radiated
Fan Fan Outlet Discharge NC/NC with
Size Cfm L/s Static NC Level Attenuator
02SQ 200 94 — 27/ *
280 132 0.25 — 29/ *
350 165 (63 Pa) — 30/ *
430 203 — 32/ *
500 236 — 34/ *
03SQ 250 118 — 27/24
400 189 0.25 — 30/27
610 288 (63 Pa) — 35/ *
850 401 15 37/ *
04SQ 300 142 — 29/24
530 250 0.25 — 31/26
790 373 (63 Pa) — 35/34
1100 519 19 39/37
05SQ 350 165 — 29/26
650 307 0.25 — 32/29
970 458 (63 Pa) 16 37/32
1300 614 21 40/37
06SQ 920 434 16 37/ *
1200 566 0.25 20 39/ *
1400 661 (63 Pa) 21 41/ *
1700 802 25 44/ *
07SQ 1050 496 16 37/32
1300 614 0.25 21 41/35
1500 708 (63 Pa) 24 44/36
1800 850 25 44/40
* Attenuator not recommended
Notes:
1. “–“ represents NC levels below NC 15.
2. NC Values are calculated using current Industry
Standard ARI 885, 2002 addendum to revision 1998.
Radiated Transfer Function obtained from Appendix
E, Type 2 Mineral Fiber Insulation.
Fan Only Sound Power
Discharge Sound Power (dB) Radiated Sound Power (dB)
Fan Outlet Fan Octave Bands Octave Bands
Size Static Cfm L/s 2 3 4 5 6 7 2 3 4 5 6 7
02SQ 200 94 55 50 50 46 42 35 63 55 53 50 44 37
0.25 280 132 57 52 51 48 44 38 65 57 54 52 46 40
(63 Pa) 350 165 58 53 52 50 46 40 66 58 55 52 48 42
430 203 61 55 54 52 49 43 68 60 57 54 50 45
500 236 62 56 55 53 50 46 69 61 58 56 52 48
03SQ 250 118 53 49 51 45 40 39 61 55 53 49 42 35
0.25 400 189 56 51 53 46 42 41 64 56 55 51 45 40
(63 Pa) 610 288 63 58 57 53 48 47 70 62 60 56 51 48
850 401 65 59 60 56 52 51 72 63 62 59 55 53
04SQ 300 142 55 51 52 47 41 38 61 56 54 49 43 34
0.25 530 250 56 53 55 50 45 42 63 57 56 51 47 41
(63 Pa) 790 373 62 58 59 55 50 48 69 62 60 56 52 49
1100 519 65 62 64 60 56 55 72 66 64 60 57 55
1350 637 68 65 66 65 60 59 75 69 67 64 61 60
05SQ 350 165 56 52 54 46 40 37 63 57 54 48 42 35
0.25 650 307 58 55 57 50 45 42 65 60 57 51 47 43
(63 Pa) 970 458 61 60 62 57 51 50 68 63 62 57 53 51
1300 614 64 63 66 63 58 57 71 67 65 62 59 57
06SQ 920 434 63 60 60 56 51 48 71 64 62 56 51 47
0.25 1200 566 66 63 61 59 54 51 73 65 63 59 53 51
(63 Pa) 1400 661 68 64 63 61 56 54 75 67 64 60 55 53
1700 802 70 67 65 63 58 57 77 69 66 63 58 56
07SQ 1050 496 59 60 61 55 49 46 67 61 62 56 50 46
0.25 1300 614 62 64 62 58 53 50 69 64 66 58 54 50
(63 Pa) 1500 708 64 66 64 61 56 53 70 65 68 60 56 52
1800 850 66 67 68 65 60 57 73 68 68 63 59 56
1. All data are measured in accordance with Industry Standard ARI 880-98.
2. All sound power levels, dB re: 10 -12 Watts.
ARI 885-98 DISCHARGE TRANSFER FUNCTION ASSUMPTIONS:
Octave Band
2 3 4 5 6 7
Small Box (700 Cfm) -29 -30 -41 -51 -52 -39
Subtract from terminal unit sound power to determine discharge sound
pressure in the space.
ARI 885-98 RADIATED TRANSFER FUNCTION ASSUMPTIONS:
Octave Band
2 3 4 5 6 7
Type 2- Mineral Fiber Insulation -18 -19 -20 -26 -31 -36
Total dB reduction -18 -19 -20 -26 -31 -36
Subtract from terminal unit sound power o determine radiated sound
pressure in the space.
FPP 22
VAV-PRC008-EN

Fan-Powered
Parallel
Performance
Data—
Acoustics
Sound Noise Criteria (NC)
Valve Only
Discharge
Radiated
NC Level ∆Ps
NC Level ∆Ps
Fan Inlet 0.5" 1.0" 2.0" 3.0" 0.5" 1.0" 2.0" 3.0"
Size Size Cfm L/s (127 Pa) (254 Pa) (508 Pa) (762 Pa) (127 Pa) (254 Pa) (508 Pa) (762 Pa)
02SQ 6 200 94 — — — 20 — 15 21 21
300 142 — — — 19 15 20 24 27
400 189 — 16 19 21 20 23 26 30
500 236 — 20 22 26 22 26 31 32
02SQ 8 350 165 — — 15 19 — 17 24 26
520 245 — — 19 21 19 22 27 31
700 330 16 20 25 27 24 26 32 35
900 425 21 25 29 31 30 32 37 39
02SQ 10 550 260 — 16 22 25 19 24 29 31
820 387 — 21 29 31 21 27 34 37
1100 519 17 25 31 35 25 31 37 41
1400 661 22 29 35 38 30 35 40 *
03SQ 6 100 47 — — — 16 — — 18 20
200 94 — — — 17 — 16 21 23
300 142 — — 16 17 — 19 24 27
400 189 — 16 21 22 15 22 26 30
600 283 16 19 27 30 24 29 33 35
03SQ 8 175 83 — — — 17 — 15 19 21
04SQ 350 165 — — 15 19 19 21 24 26
525 248 — — 17 20 20 24 27 31
700 330 — 16 22 25 22 26 30 33
1050 496 21 26 29 31 30 32 37 40
03SQ 10 275 128 — — — 17 16 19 22 24
04SQ 550 260 — — 18 20 22 25 27 31
05SQ 825 389 — 16 22 26 24 27 32 35
1100 519 15 20 26 29 25 30 35 37
1640 774 22 27 32 36 31 36 42 *
03SQ 12 385 182 — — — 17 15 19 22 24
04SQ 775 366 — — 21 24 21 26 30 34
05SQ 1160 547 — 17 25 29 26 31 37 41
1550 732 15 21 29 34 30 36 41 45
2350 1105 22 29 34 38 35 40 * *
05SQ 14 525 248 — — 16 19 20 24 27 30
1050 496 — 17 25 27 25 30 36 40
1575 743 — 21 30 34 29 35 41 45
2100 991 17 25 32 37 31 37 45 52
3200 1510 25 30 37 41 37 44 52 56
06SQ 10 550 260 — — 18 19 15 19 24 27
07SQ 800 378 — — 19 22 16 21 27 31
1000 472 — 16 21 25 19 24 31 34
1200 566 — 20 25 27 21 27 34 36
1350 637 16 22 27 30 24 30 36 38
06SQ 12 800 260 — 17 24 27 20 25 30 34
07SQ 1100 519 — 21 29 32 22 29 35 37
1400 661 — 24 31 36 25 31 39 41
1700 802 16 26 34 38 27 32 42 *
2000 944 19 27 36 40 29 35 * *
06SQ 14 1100 519 — 15 22 29 17 24 31 37
07SQ 1600 755 — 20 27 31 21 29 35 40
2100 991 16 24 30 35 27 32 40 44
2500 1180 20 26 32 36 31 36 42 46
3000 1416 24 29 35 39 36 40 45 50
06SQ 16 1400 661 — 19 27 34 26 31 37 41
07SQ 2100 991 15 22 31 35 30 36 41 44
2700 1274 19 25 32 37 32 39 45 *
3400 1605 21 27 34 38 35 42 * *
4000 1888 25 30 36 41 39 45 52 55
*Not a recommended selection
VAV-PRC008-EN
FPP 23

Fan-Powered
Parallel
Performance
Data—
Acoustics
Discharge Sound Power (dB)
Valve Only
ARI Conditions
Fan Inlet 1.5" Inlet Pressure (381 Pa)
Size Size Cfm L/s 2 3 4 5 6 7
02SQ 5 250 118 61 56 54 53 50 47
02SQ 6 400 189 63 60 59 60 57 49
02SQ 8 700 330 65 64 63 60 57 52
02SQ 10 1100 519 73 69 68 68 66 58
03SQ 6 400 189 61 60 57 53 50 46
03SQ 8 700 330 62 62 60 57 54 49
04SQ
03SQ 10 1100 519 66 66 65 62 59 53
04SQ
05SQ
03SQ 12 1600 755 70 67 66 64 61 55
04SQ
05SQ
04SQ 14 2100 991 72 71 69 66 63 59
05SQ
06SQ 10 1100 519 63 64 62 58 54 49
07SQ
06SQ 12 1600 755 75 71 69 69 67 60
07SQ
06SQ 14 2100 991 72 69 68 67 64 58
07SQ
06SQ 16 2800 1321 74 70 69 68 66 61
07SQ
Radiated Sound Power (dB)
Valve Only
ARI Conditions
Fan Inlet 1.5" Inlet Pressure (381 Pa)
Size Size Cfm L/s 2 3 4 5 6 7
02SQ 5 250 118 50 48 46 42 38 30
02SQ 6 400 189 60 54 51 44 37 29
02SQ 8 700 330 66 59 55 48 43 39
02SQ 10 1100 519 70 64 58 52 45 36
03SQ 6 400 189 59 55 51 46 41 35
03SQ 8 700 330 64 58 53 47 42 35
04SQ
03SQ 10 1100 519 68 62 57 51 46 40
04SQ
05SQ
03SQ 12 1600 755 73 64 57 51 44 39
04SQ
05SQ
04SQ 14 2100 991 75 66 60 53 46 40
05SQ
06SQ 10 1100 519 63 59 53 49 46 42
07SQ
06SQ 12 1600 755 73 65 58 53 46 40
07SQ
06SQ 14 2100 991 72 64 58 53 46 38
07SQ
06SQ 16 2800 1321 76 69 62 55 51 44
07SQ
Note: Oversizing primary valves to achieve lower sound levels will increase the minimum operable cfm. (See "Valve/Controller
Airflow Guidelines".) This will increase energy consumption at minimum airflows when local reheat is energized.
Discharge Sound Power (dB)
Fan Only
ARI Conditions
Fan Inlet
Size Size Cfm L/s 2 3 4 5 6 7
02SQ 6, 8, 10 500 236 62 56 55 53 50 46
03SQ 6, 8, 10, 12 1090 514 70 64 65 63 58 58
04SQ 8, 10, 12, 14 1300 614 67 64 66 64 59 58
05SQ 10, 12, 14 1550 732 66 65 67 66 61 60
06SQ 10, 12, 14, 16 1960 925 72 69 68 66 62 60
07SQ 10, 12, 14, 16 2020 953 67 68 69 66 62 59
Notes:
1. All sound data rated in accordance with current Industry Standard
ARI 880, version 1998.
2. All sound power levels, dB re: 10 -12 Watts.
Radiated Sound Power (dB)
Fan Only
ARI Conditions
Fan Inlet
Size Size Cfm L/s 2 3 4 5 6 7
02SQ 6, 8, 10 500 236 69 61 58 56 52 48
03SQ 6, 8, 10, 12 1090 514 77 68 66 64 60 59
04SQ 8, 10, 12, 14 1300 614 74 68 66 63 60 59
05SQ 10, 12, 14 1550 732 74 69 68 65 62 61
06SQ 10, 12, 14, 16 1960 925 79 71 67 64 61 59
07SQ 10, 12, 14, 16 2020 953 74 69 69 65 61 58
FPP 24
VAV-PRC008-EN

Fan-Powered
Parallel
Performance
Data—
Acoustics
Parallel Inlet Attenuator Appurtenance Effects
(Fan Noise Only)
Discharge Sound Effect* (dB) Radiated Sound Effect* (dB)
Fan 2 3 4 5 6 7 2 3 4 5 6 7
Matte-faced and foil-faced insulation, solid double-wall**
02SQ 2 1 1 2 1 2 1 -2 -8 -13 -15 -16
03SQ, 04SQ, 05SQ 2 1 1 2 1 2 0 -1 -8 -12 -16 -17
06SQ, 07SQ 2 1 1 2 1 2 1 0 -8 -12 -15 -18
Closed-cell insulation
02SQ 1 1 1 1 1 1 1 -1 -3 -2 -4 -4
03SQ, 04SQ, 05SQ 1 1 1 1 1 1 0 -1 -3 -2 -4 -4
06SQ, 07SQ 1 1 1 1 1 1 1 -1 -3 -2 -4 -4
* Add to sound power, a negative effect represents a sound reduction, a positive effect
represents a sound increase.
** Note- Attenuators on double-wall units contain foil-faced insulation.
Parallel Cabinet Lining Appurtenance Effects
(Fan Noise and Valve Noise)
Discharge Sound Effect* (dB) Radiated Sound Effect* (dB)
Fan 2 3 4 5 6 7 2 3 4 5 6 7
Solid double-wall
02SQ 3 1 1 -1 1 3 1 0 0 1 4 7
03SQ, 04SQ, 05SQ 1 -1 1 3 4 5 1 0 2 5 8 8
06SQ, 07SQ 3 1 1 1 3 5 -1 -1 -1 2 4 5
Closed-cell insulation
02SQ 1 1 1 0 1 4 0 0 2 2 5 7
03SQ, 04SQ, 05SQ 1 1 2 2 2 3 1 2 4 4 4 5
06SQ, 07SQ 1 1 2 1 2 4 1 0 3 4 5 6
* Add to sound power, a negative effect represents a sound reduction, a positive effect
represents a sound increase
Parallel Heating Coil Appurtenance Effects
Discharge Sound Effect* (dB) Radiated Sound Effect* (dB)
Fan 2 3 4 5 6 7 2 3 4 5 6 7
Hot Water Coil**
02SQ -1 0 -1 -1 0 -1 -1 -1 0 -1 -1 -3
03SQ, 04SQ, 05SQ 2 2 2 2 2 1 1 1 1 1 0 0
06SQ, 07SQ 2 1 0 -1 0 0 0 0 0 -1 0 -1
Electric Heat***
02SQ 0 0 0 -1 -2 -1 0 0 0 0 0 0
03SQ, 04SQ, 05SQ 0 0 0 0 0 1 0 0 0 0 0 0
06SQ, 07SQ 3 4 3 2 4 4 1 0 0 0 0 0
* Add to sound power, a negative effect represents a sound reduction, a positive effect
represents a sound increase.
** Add to fan sound only, not valve sound.
*** Add to both fan sound and valve sound.
Apply fan only data, not valve sound.
VAV-PRC008-EN
FPP 25

Fan-Powered
Parallel
Dimensional
Data
PARALLEL COOLING ONLY (VPCF)
FAN
SIZE
02SQ
03SQ
04SQ
06SQ
07SQ
INLET SIZE
INLET SIZE
AVAILABILITY
(NOMINAL Ø")
(NOMINAL Ømm)
127 mm, 152 mm, 203 mm, 254 mm
6", 8", 10", 12" 152 mm, 203 mm, 254 mm, 305 mm
203 mm, 254 mm, 305 mm, 356 mm
10", 12", 14" 254 mm, 305 mm, 356 mm
254 mm, 305 mm, 356 mm, 406 mm
10", 12", 14", 16" 254 mm, 305 mm, 356 mm, 406 mm
H
15.50" (394 mm)
17.50" (445 mm)
21.50" (546 mm)
W
40.00" (1016 mm)
L
30.00" (762 mm)
32.50" (826 mm)
40.00" (1016 mm)
DISCHARGE DIMENSIONS
A
B
19.25" (489 mm)
20.00" (508 mm)
UNIT WT
WT LBS
(kg)
78 (35)
97 (44)
117 (53)
125 (57)
4.
Optional Attenuator
Field Installed
9.
Actuator, Controller and
Fan Controls located in this area
2.
9.
Actuator, Controller and
Fan Controls located in this area
40.00"
(1016 mm)
Airflow
Plenum Inlet
(Valves 5"-14")
(Valve 16")
18.875" Max.
(479 mm)
4.00"
(102 mm)
2.00"
(51 mm)
Flow Ring
tubing
20.00"
(508 mm)
Primary
Airflow
Valve 5"
6.50"
(165 mm)
Air 4.00"
Valve
Optional Attenuator
Field Installed
5.
30.00"
(762 mm)
Fan Size
02SQ
03SQ
04SQ
05SQ
Filter Size
14" x 20" x 1"
(356 mm x 508 mm x 25 mm)
16" x 20" x 1"
(406 mm x 508 mm x 25 mm)
Attn. Weight
Wt Lbs
(kg)
46 (21)
48 (22)
L
06SQ
07SQ
20" x 20" x 1"
(508 mm x 508 mm x 25 mm)
54 (25)
9.
NOTES:
TOP VIEW
1. Allow a minimum 6" (152 mm) plenum inlet
clearance for unducted installations.
5.
2. Filter location with optional Attenuator.
Airflow
Discharge Outlet
Panel slides
for Motor access
3. Attenuator-factory assembled, field installed.
4. See Installation Documents for exact hanger bracket location.
5.50" Max.
(140 mm)
W
20.00"
(508 mm)
5. For Motor access, remove bottom screw on hanger brackets
to slide panel as shown in drawing.
6. When Attenuator option selected, water coil ships mounted
to attenuator.
7. Air valve centered between top and bottom panel.
B
FPP 26
(287 mm)
9.
A
DISCHARGE VIEW
H
8. All high & low voltage controls have same-side NEC
jumpback clearance. (Left-hand shown, right-hand/mirror
image optional.)
9. Maximum dimensions for controls area shown. Configurations
and types of control boxes vary according to control type
selected. See "Enclosure Details" for specific layout.
VAV-PRC008-EN

Fan-Powered
Parallel
Dimensional
Data
PARALLEL HOT WATER (VPWF)
FAN INLET SIZE
INLET SIZE
DISCHARGE DIMENSIONS UNIT WT
SIZE
AVAILABILITY
H
W
L
WT LBS
(NOMINAL Ø")
(NOMINAL Ømm)
A
B
(kg)
02SQ 5", 6", 8", 10" 127 mm, 152 mm, 203 mm, 254 mm 15.50" (394 mm) 40.00" (1016 mm) 30.00" (762 mm) 19.25" (489 mm) 14.00" (356 mm) 78 (35)
17.50" (445 mm)
32.50" (826 mm)
16.00" (406 mm)
04SQ
10", 12", 14"
203 mm, 254 mm, 305 mm, 356 mm
254 mm, 305 mm, 356 mm
97 (44)
06SQ
254 mm, 305 mm, 356 mm, 406 mm 21.50" (546 mm) 40.00" (1016 mm) 20.00" (508 mm) 117 (53)
07SQ 10", 12", 14", 16" 254 mm, 305 mm, 356 mm, 406 mm
125 (57)
4.
Optional Attenuator
Field Installed
9.
Actuator, Controller and
Fan Controls located in this area
2.
9.
Actuator, Controller and
Fan Controls located in this area
40.00"
(1016 mm)
20.00"
(508 mm)
Coil
Connection
Water
Coil
6.30"
(160 mm)
Airflow
Plenum Inlet
(Valves 6"-14")
(Valve 16")
4.00"
(102 mm)
2.00"
(51 mm)
Flow Ring
tubing
20.00"
(508 mm)
Primary
Airflow
Valve 5"
6.50"
(165 mm)
Valve 5"
6.50"
(165 mm)
Optional Attenuator
Field Installed
30.00"
(762 mm)
Fan Size
Filter Size
Attn. Weight
Wt Lbs
(kg)
Air
Valve
4.00"
02SQ
14" x 20" x 1"
(356 mm x 508 mm x 25 mm)
46 (21)
18.875" Max.
(479 mm)
5.
03SQ
04SQ
05SQ
06SQ
07SQ
16" x 20" x 1"
(406 mm x 508 mm x 25 mm)
20" x 20" x 1"
(508 mm x 508 mm x 25 mm)
48 (22)
54 (25)
L
9.
NOTES:
TOP VIEW
1. Allow a minimum 6" (152 mm) plenum inlet clearance
for unducted installations.
2. Filter location with optional Attenuator.
5.
3. Attenuator-factory assembled, field installed.
Airflow
Discharge Outlet
Panel slides
for Motor access
4. See Installation Documents for exact hanger bracket location.
5. For Motor access, remove bottom screw on hanger
brackets to slide panel as shown in drawing.
5.50" Max.
(140 mm)
W
20.00"
(508 mm)
6. When Attenuator option selected, water coil ships
mounted to attenuator.
7. Air valve centered between top and bottom panel.
B
11.30" Max.
(287 mm)
H
8. All high & low voltage controls have same-side NEC
jumpback clearance. (Left-hand shown, right-hand/mirror
image optional.)
9. Maximum dimensions for controls area shown.
Configurations and types of control boxes vary according to
control type selected. See "Enclosure Details" for specific layout.
9.
VAV-PRC008-EN
A
DISCHARGE VIEW
FPP 27

Fan-Powered
Parallel
Dimensional
Data
PARALLEL WITH HOT WATER ON DISCHARGE (VPWF)
FAN INLET SIZE
SIZE
(NOMINAL Ø")
02SQ
03SQ 6", 8", 10", 12"
04SQ 8", 10", 12", 14"
05SQ 10", 12", 14"
06SQ 10", 12", 14", 16"
07SQ 10", 12", 14", 16"
INLET SIZE
AVAILABILITY
(NOMINAL Ømm)
203 mm, 254 mm, 305 mm, 356 mm
254 mm, 305 mm, 356 mm
254 mm, 305 mm, 356 mm, 406 mm
254 mm, 305 mm, 356 mm, 406 mm
H
21.50" (546 mm)
W
40.00" (1016 mm)
L
30.00" (762 mm)
32.50" (826 mm)
40.00" (1016 mm)
DISCHARGE DIMENSIONS
A
B
14.00" (356 mm)
16.00" (406 mm)
20.00" (508 mm)
UNIT WT
WT LBS
(kg)
78 (35)
96 (43)
97 (44)
111 (50)
117 (53)
125 (57)
4.
Optional Attenuator
Field Installed
8.
Actuator, Controller and
Fan Controls located in this area
2.
Actuator, Controller and
Fan Controls located in this area
40.00"
(1016 mm)
Airflow
Plenum Inlet
(Valves 5"-14")
4.00"
(102 mm)
20.00"
(508 mm)
(Valve 16")
2.00"
(51 mm)
Flow Ring
tubing
Primary
Airflow
Air
alve
Valve 5"
6.50"
(165 mm)
4.00"
Optional Attenuator
Field Installed
30.00"
(762 mm)
Fan Size
Filter Size
Attn. Weight
Wt. Lbs.
(kg)
18.875" Max.
(479 mm)
5.
02SQ
03SQ
04SQ
05SQ
14" x 20" x 1"
(356 mm x 508 mm x 25 mm)
16" x 20" x 1"
(406 mm x 508 mm x 25 mm)
46 (21)
48 (22)
L
06SQ
07SQ
20" x 20" x 1"
(508 mm x 508 mm x 25 mm)
54 (25)
8.
Airflow
Discharge Outlet
TOP VIEW
NOTES:
6.30"
(160 mm)
Water
Coil
Panel slides
for Motor access
5.
1. Allow a minimum 6" (152 mm) plenum inlet
clearance for unducted installations.
2. Filter location with optional Attenuator.
20.00"
(508 mm)
3. Attenuator-factory assembled, field installed.
4. See Installation Documents for exact hanger bracket location.
5.50" Max.
(140 mm)
W
20.00"
(508 mm)
5. For Motor access, remove bottom screw on hanger brackets
to slide panel as shown in drawing.
6. Air valve centered between top and bottom panel.
B
11.30" Max.
(287 mm)
H
7. All high & low voltage controls have same-side NEC
jumpback clearance. (Left-hand shown, right-hand/mirror
image optional.)
8. Maximum dimensions for controls area shown. Configurations
and types of control boxes vary according to type selected. See
"Enclosure Details" for specific layout.
FPP 28
8.
A
DISCHARGE VIEW
VAV-PRC008-EN

Fan-Powered
Parallel
Dimensional
Data
COIL INFORMATION FOR PARALLEL PLENUM INLET 1-ROW COIL
FAN
SIZE
COIL
CONNECTION
A
B
C
D
L
H
W
02SQ
03SQ
.875" (22 mm) O.D.
9.75" (248 mm)
13.75" (349 mm)
1.30" (33 mm)
1.00" (25 mm)
2.00" (51 mm)
1.00" (25 mm)
2.50" (64 mm)
1.50" (38 mm)
20.20" (513 mm)
20.00" (508 mm)
14.20" (359 mm)
16.00" (406 mm)
6.75" (171 mm)
6.30" (160 mm)
04SQ
05SQ
06SQ
15.75" (400 mm) 1.25" (32 mm) 2.00" (51 mm) 2.50" (64 mm) 20.20" (513 mm) 20.20" (513 mm)
6.75" (171 mm)
07SQ
L
W
.75"
(19 mm)
C
B
H
A
AIR FLOW
D
FAN SIZE
02SQ
INTERNAL
VOLUME
GAL (L)
OPERATING
WEIGHT
LBS (KG)
0.14 (.53) 12.3 (5.6)
1.125"
(29 mm)
B
03SQ
04SQ
05SQ
06SQ
07SQ
0.21 (.80) 21.9 (9.9)
0.22 (.84) 14.5 (6.6)
NOTES:
1. Location of coil connections is determined by facing air stream. R.H. coil
connection shown, L.H. not available.
2. Coil furnished with stub sweat connections.
VAV-PRC008-EN
FPP 29

Fan-Powered
Parallel
Dimensional
Data
INFORMATION FOR PARALLEL PLENUM INLET 2-ROW COIL
FAN
SIZE
COIL
CONNECTION
A
B
C
L
H
W
02SQ
03SQ
.875" (22 mm) O.D.
10.25" (260 mm) 1.25" (32 mm)
13.75" (349 mm) 1.00" (25 mm)
6.80" (173 mm)
6.70" (170 mm)
20.20" (513 mm)
20.00" (508 mm)
14.20" (359 mm)
16.00" (406 mm)
6.75" (171 mm)
6.30" (160 mm)
04SQ
05SQ
06SQ
15.75" (400 mm)
1.12" (28 mm)
6.80" (173 mm) 20.20" (513 mm) 20.20" (513 mm) 6.75" (171 mm)
07SQ
L
W
.75"
(19 mm)
OUTLET
B
H
A
AIR FLOW
FAN SIZE
INTERNAL
VOLUME
GAL (L)
OPERATING
WEIGHT
LBS (KG)
INLET
A
1.94"
(50 mm)
B
C
02SQ
03SQ
04SQ
05SQ
06SQ
07SQ
0.25
0.36
0.38
(.95) 16.8 (7.6)
(1.38) 24.8 (11.2)
(1.46) 20.1 (9.1)
NOTES:
1. Location of coil connections is determined by facing air stream. R.H. coil
connections shown, L.H. not available.
2. Coil furnished with stub sweat connections.
FPP 30
VAV-PRC008-EN

Fan-Powered
Parallel
Dimensional
Data
COIL INFORMATION FOR PARALLEL DISCHARGE 1-ROW COIL
FAN
SIZE
COIL
CONNECTION
A
B
L
H
W
02SQ
03SQ
04SQ
05SQ
.875" (22 mm) O.D.
9.75" (248 mm)
13.75" (349 mm)
1.60" (41 mm)
20.20" (513 mm)
20.00" (508 mm)
14.20" (359 mm)
16.00" (406 mm)
6.75" (171 mm)
6.30" (160 mm)
06SQ
15.75" (400 mm)
20.20" (513 mm)
20.20" (513 mm)
6.75" (171 mm)
07SQ
W
L
2.00"
(51 mm)
B
H
7.82"
(198 mm)
A
AIR FLOW
ACCESS PANEL
A
2.50"
(64 mm)
FAN SIZE
02SQ
INTERNAL
VOLUME
GAL (L)
0.14
(.53)
OPERATING
WEIGHT
LBS (KG)
12.3
(5.6)
3.40"
(86 mm)
B
03SQ
04SQ
05SQ
06SQ
07SQ
0.21
0.22
(.79)
(.83)
21.9
14.5
(9.9)
(6.6)
1.125"
(29 mm)
NOTES:
1. Location of coil connections is determined by facing air stream. L.H. coil
connections shown, R.H. opposite.
2. Coil furnished with stub sweat connections.
3. Coils can be field-rotated for opposite connections. Note: Water inlet is always
the bottom connection.
4. Flanged water coil shown. Slip and Drive available.
VAV-PRC008-EN
5. Access panel is standard.
FPP 31

Fan-Powered
Parallel
Dimensional
Data
COIL INFORMATION FOR PARALLEL DISCHARGE 2-ROW COIL
FAN
SIZE
COIL
CONNECTION
A
B
C
D
L
H
W
02SQ
.875" (22 mm) O.D.
9.75" (248 mm)
1.60" (41 mm)
6.80" (173 mm)
2.00" (51 mm)
20.20" (513 mm)
14.20" (359 mm)
6.75" (171 mm)
03SQ
13.75" (349 mm)
1.00" (25 mm)
6.70" (170 mm)
1.00" (25 mm)
20.00" (508 mm)
16.00" (406 mm)
6.30" (160 mm)
04SQ
05SQ
06SQ
15.75" (400 mm)
1.25" (32 mm)
6.80" (173 mm)
2.00" (51 mm)
20.20" (513 mm)
20.20" (513 mm)
6.75" (171 mm)
07SQ
L
W
H
OUTLET
B
7.82"
(198 mm)
A
AIR FLOW
FAN SIZE
INTERNAL
VOLUME
GAL (L)
OPERATING
WEIGHT
LBS (KG)
02SQ
0.25
(.95)
16.8
(7.6)
03SQ
04SQ
05SQ
06SQ
07SQ
0.36 (1.36) 24.8 (11.2)
0.38 (1.44) 20.1 (9.1)
ACCESS PANEL
INLET
A
NOTES:
B
C
1. Location of coil connections is determined by facing air stream. L.H. coil
connections shown, R.H. opposite.
3.40"
(86 mm)
1.94"
(50 mm)
2. Coil furnished with stub sweat connections.
3. Coils can be field-rotated for opposite connections. Note: Water inlet is
always the bottom connection.
4. Flanged water coil shown. Slip and Drive available.
5. Access panel is standard.
FPP 32
VAV-PRC008-EN

Fan-Powered
Parallel
Dimensional
Data
PARALLEL ELECTRIC HEAT (VPEF)
FAN INLET SIZE
SIZE
AVAILABILITY
(NOMINAL Ø")
02SQ 5", 6", 8", 10"
03SQ 6", 8", 10", 12"
04SQ 8", 10", 12", 14"
05SQ 10", 12", 14"
06SQ 10", 12", 14", 16"
07SQ 10", 12", 14", 16"
INLET SIZE
AVAILABILITY
(NOMINAL Ømm)
H
W
127 mm, 152 mm, 203 mm, 254 mm
152 mm, 203 mm, 254 mm, 305 mm
203 mm, 254 mm, 305 mm, 356 mm
15.50" (394 mm)
17.50" (445 mm)
40.00" (1016 mm)
254 mm, 305 mm, 356 mm
254 mm, 305 mm, 356 mm, 406 mm
254 mm, 305 mm, 356 mm, 406 mm
21.50" (546 mm)
L
30.00" (762 mm)
32.50" (826 mm)
40.00" (1016 mm)
DISCHARGE DIMENSIONS UNIT WT
WT LBS
A
20.00" (508 mm)
B
14.00" (356 mm)
16.00" (406 mm)
(kg)
120 (54)
96 (43)
138 (63)
141 (64)
20.00" (508 mm)
178 (80)
186 (84)
5.
Optional Attenuator
Field Installed
9.
2.
Actuator, Controller and
9. Fan Controls located in this area
Actuator, Controller and
Fan Controls located in this area
40.00"
(1016 mm)
Airflow
Plenum Inlet
4.00"
(102 mm)
Flow Ring
tubing
20.00"
(508 mm)
Primary
Airflow
Valve 5"
6.50"
(165 mm)
4.00"
Optional Attenuator
Field Installed
30.00"
(762 mm)
Fan Size
Filter Size
Attn. Weight
Wt. Lbs.
(kg)
02SQ
14" x 20" x 1"
(356 mm x 508 mm x 25 mm)
46 (21)
18.875" Max.
(479 mm)
4.
03SQ
04SQ
05SQ
16" x 20" x 1"
(406 mm x 508 mm x 25 mm)
48 (22)
9.
L
06SQ
07SQ
20" x 20" x 1"
(508 mm x 508 mm x 25 mm)
54 (25)
22.00"
(559 mm)
Terminal Box
Heater
6.00"
(152 mm)
Panel slides
for Motor access
4.
NOTES:
1. Allow a minimum 6" (152 mm) plenum inlet clearance for
unducted installations.
2. Filter location with optional Attenuator.
3. Attenuatory factory assembled, field installed.
Airflow
Discharge Outlet
TOP VIEW
4. For motor access, remove bottom screws on hanger brackets
to slide panel as shown in drawing.
5.50" Max.
(140 mm)
W
20.00"
(508 mm)
5. See Installation Documents for exact hanger bracket location.
6. Air valve centered between top and bottom panel.
7. Heating coil uninsulated. External insulation may be field
supplied and installed as required.
8. All high & low voltage controls have same side NEC jumpback
clearance. (Left-hand shown, right-hand/mirror image optional.)
B
11.30" Max.
(287 mm)
H
9. Maximum dimensions for controls area shown. Configurations
and types of control boxes vary according to control type
selected. See "Enclosure Details" for specific layout.
9.
VAV-PRC008-EN
A
DISCHARGE VIEW
FPP 33

Fan-Powered
Parallel
Dimensional
Data
ENCLOSURE DETAILS (Parallel Units)
AIRFLOW
AIRFLOW
AIR
VALVE
AIR
VALVE
ACTUATOR
6.50"
(165 mm)
6.50"
(165 mm)
5.50"
(140 mm)
Detail A
5.50"
(140 mm)
Detail B
AIRFLOW
AIRFLOW
AIR
VALVE
AIR
VALVE
ACTUATOR
16.50"
(419 mm)
6.50"
(165 mm)
5.50"
(140 mm)
Detail C
5.00"
(127 mm)
Detail D
AIRFLOW
6.50"
(165 mm)
ACTUATOR
AIR
VALVE
NOTES:
1. All high & low voltage controls have same-side jumpback
clearance. (Left-hand shown, right-hand available.
6.50"
(165 mm)
Detail E
5.50"
(140 mm)
Control Type
Enclosure Detail Summary
DD01 DD11
ENON PNON DD00 PNOO PNO5 EI05 thru thru ENCL
DD07 DD17
FM00
02SQ
D
D
D
D
D
D
D
D
D
D
Fan Size
03SQ
04SQ
05SQ
D D D D D D D D D
D
06SQ
07SQ
A
A
B
C
C
E
E
D
D
D
FPP 34
VAV-PRC008-EN

Fan-Powered
Parallel
Mechanical
Specifications
MODELS VPCF, VPWF
and VPEF
Parallel fan-powered
terminal units.
VPCF – Cooling Only
VPWF – With Hot Water Coil
VPEF – With Electric Coil
CASING
22-gage galvanized steel. Hanger
brackets, side access, and plenum filter
are provided as standard.
AGENCY LISTING
The unit is UL and Canadian UL
Listed as a room air terminal unit.
Control # 9N65.
ARI 880 Certified.
INSULATION
1/2" (12.7 mm) Matte-faced
Insulation—The interior surface of the
unit casing is acoustically and
thermally lined with ½-inch, 1.5 lb/ft 3
(12.7 mm, 24.0 kg/m 3 ) composite
density glass fiber with a high-density
facing. The insulation R-Value is 1.9. The
insulation is UL listed and meets NFPA-
90A and UL 181 standards. There are
no exposed edges of insulation
(complete metal encapsulation).
1" (25.4 mm) Matte-faced
Insulation—The interior surface of the
unit casing is acoustically and
thermally lined with 1 inch, 1.0 lb/ft 3
(25.4 mm, 16.0 kg/m 3 ) composite
density glass fiber with a high-density
facing. The insulation R-Value is 3.85.
The insulation is UL listed and meets
NFPA-90A and UL 181 standards. There
are no exposed edges of insulation
(complete metal encapsulation).
1/2" (12.7 mm) Foil-faced
Insulation—The interior surface of the
unit casing is acoustically and
thermally lined with ½-inch, 1.5 lb/ft 3
(12.7 mm, 24.0 kg/m 3 ) density glass
fiber with foil facing. The insulation
R-Value is 2.1. The insulation is UL
listed and meets NFPA-90A and UL 181
standards as well as bacteriological
standard ASTM C 665. There are no
exposed edges of insulation (complete
metal encapsulation).
1" (25.4 mm) Foil-faced
Insulation—The interior surface of
the unit casing is acoustically and
thermally lined with 1-inch, 1.5 lb/ft 3
(25.4 mm, 24.0 kg/m 3 ) density glass
fiber with foil facing. The insulation R-
Value is 4.1. The insulation is UL listed
and meets NFPA-90A and UL 181
standards as well as bacteriological
VAV-PRC008-EN
Fan–Inlet Combinations:
VPXF
Inlet 02SQ 03SQ 04SQ 05SQ 06SQ 07SQ
5" X
6" X X
8" X X X
10" X X X X X X
12" X X X X X
14" X X X X
16" X X
standard ASTM C 665. There are no
exposed edges of insulation (complete
metal encapsulation).
1" (25.4 mm) Double-wall
Insulation—The interior surface of
the unit casing is acoustically and
thermally lined with a 1-inch, 1.0 lb./ft 3
(25.4 mm, 16.0 kg/m 3 ) composite
density glass fiber with high-density
facing. The insulation R-value is 3.8. The
insulation is UL listed and meets NFPA-
90A and UL 181 standards. The
insulation is covered by an interior
liner made of 26-gage galvanized steel.
All wire penetrations are covered by
grommets. There are no exposed
edges of insulation (complete metal
encapsulation).
3/8" (9.5 mm) Closed-cell
Insulation—The interior surface of
the unit casing is acoustically and
thermally lined with 3/8-inch, 4.4 lb/ft 3
(9.5 mm, 70.0 kg/m 3 ) closed-cell
insulation. The insulation is UL listed
and meets NFPA-90A and UL 181
standards. The insulation has an
R-Value of 1.4. There are no exposed
edges of insulation (complete metal
encapsulation).
PRIMARY AIR VALVE
Air Valve Round—The primary air
inlet connection is an 18-gage
galvanized steel cylinder sized to fit
standard round duct. A multiple-point,
averaging flow sensing ring is
provided with balancing taps for
measuring +/-5% of unit cataloged
airflow. An airflow-versus-pressure
differential calibration chart is provided.
The damper blade is constructed of a
closed-cell foam seal that is
mechanically locked between two 22-
gage galvanized steel disks. The
damper blade assembly is connected
to a cast zinc shaft supported by selflubricating
bearings. The shaft is cast
with a damper position indicator. The
valve assembly includes a mechanical
stop to prevent over-stroking. At 4 in.
wg, air valve leakage does not exceed
1% of cataloged airflow.
ATTENUATORS
The attenuator is 22-gage galvanized
steel with an internal acoustical liner.
Attenuators have been tested in
accordance with ARI 880 standards.
FAN MOTOR
PSC—Single-speed, direct-drive,
permanent split capacitor type.
Thermal overload protection provided.
Motors will be designed specifically for
use with an open SCR. Motors will
accommodate anti-backward rotation
at start up. Motor and fan assembly
are isolated from terminal unit.
ECM—Electrically Commutated Motor
is designed for high-efficient operation
with over 70% efficiency throughout
the operating range.
FAN SPEED CONTROL
Variable Speed Control Switch
(SCR)—The SCR speed control device
is provided as standard and allows the
operator infinite fan speed adjustment.
TRANSFORMER
The 50-VA transformer is factoryinstalled
in the fan control box to
provide 24 VAC for controls.
DISCONNECT SWITCH
A toggle disconnect is provided as
standard and allows the operator to
turn the unit on or off by toggling to
the appropriate setting. This switch
breaks both legs of power to the fan
and the electronic controls (if
applicable)
OUTLET CONNECTION
Flanged Connection—A rectangular
opening on the unit discharge to
accept a 90° flanged ductwork
connection.
FILTER
A 1" (25 mm) filter is provided on the
plenum inlet and attaches to the unit
with a filter frame.
FPP 35

Fan-Powered
Parallel
Mechanical
Specifications
HOT WATER COIL
Parallel Water Coils—factoryinstalled
on the plenum inlet.
The coil has 1-row with 144 aluminumplated
fins per foot (.305 m), and if
needed 2-row with 144 aluminumplated
fins per foot (.305 m). Full fin
collars provided for accurate fin
spacing and maximum fin-tube
contact. The 3/8" (9.5 mm) OD
seamless copper tubes are
mechanically expanded into the fin
collars. Coils are proof tested at 450
psig (3102 kPa) and leak tested at 300
psig (2068 kPa) air pressure under
water. Coil connections are brazed.
ELECTRIC HEAT COIL
The electric heater is a factory-provided
and installed, UL recognized resistance
open-type heater. It also contains a
disc-type automatic pilot duty thermal
primary cutout, and manual reset load
carrying thermal secondary device.
Heater element material is nickelchromium.
The heater terminal box is
provided with 7/8" (22 mm) knockouts
for customer power supply. Terminal
connections are plated steel with
ceramic insulators. All fan-powered
units with electric reheat are singlepoint
power connections.
ELECTRIC HEAT OPTIONS
Magnetic Contactor—An optional
electric heater 24-volt contactor for use
with direct digital control (DDC) or
analog electronic controls.
Mercury Contactor—An optional
electric heater 24-volt contactor for use
with direct digital control (DDC) or
analog electronic controls.
P.E. Switch with Magnetic
Contactor—This optional switch and
magnetic contactor is for use with
pneumatic controls.
P.E. Switch with Mercury
Contactor—This optional switch and
mercury contactor is for use with
pneumatic controls.
Airflow Switch—An optional air
pressure device designed to disable
the heater when the system fan is off.
Power Fuse—If a power fuse is
chosen with a unit containing electric
heat, then a safety fuse is located in the
electric heater’s line of power to
prevent power surge damage to the
electric heater.
Any electric heat unit with a calculated
MCA greater than or equal to 30 will
have a fuse provided.
FPP 36
Disconnect Switch—An optional
factory-provided door interlocking
disconnect switch on the heater control
panel disengages primary voltage to
the terminal.
UNIT CONTROLS SEQUENCE OF
OPERATION
The unit controller continuously
monitors the zone temperature against
its setpoint and varies the primary
airflow as required to meet zone
setpoints. Airflow is limited by
minimum and maximum position set
points. For a parallel unit, the controller
will intermittently start the fan upon a
call for heat. Upon a further call for
heat, reheat is enabled.
1. Primary Airflow—The fan energizes
when primary airflow drops below
the fan setpoint airflow. The fan
automatically starts when the zone
temperature drops to the heating
temperature setpoint.
2. Zone Temperature—The fan
energizes when the zone temperature
drops to a selectable number of
degrees above the heating
temperature setpoint.
DIRECT DIGITAL CONTROLS
DDC Actuator—Trane 3-wire, 24-
VAC, floating-point control actuator
with linkage release button. Torque is
35 in-lb minimum and is non-spring
return with a 90-second drive time.
Travel is terminated by end stops at
fully-opened and -closed positions. An
integral magnetic clutch eliminates
motor stall.
Direct Digital Controller—The
microprocessor-based terminal unit
controller provides accurate, pressureindependent
control through the use
of a proportional integral control
algorithm and direct digital control
technology. The controller, named the
Unit Control Module (UCM), monitors
zone temperature setpoints, zone
temperature and its rate of change,
and valve airflow using a differential
pressure signal from the pressure
transducer. Additionally, the controller
can monitor either supply duct air
temperature or CO 2
concentration via
appropriate sensors. The controller is
provided in an enclosure with 7/8"
(22 mm) knockouts for remote control
wiring. A Trane UCM zone sensor
is required.
DDC Zone Sensor—The UCM
controller senses zone temperature
through a sensing element located in
the zone sensor. In addition to the
sensing element, zone sensor options
may include an externally-adjustable
setpoint, communications jack for use
with a portable edit device, and an
override button to change the
individual controller from unoccupied
to occupied mode. The override button
has a cancel feature that will return the
system to unoccupied. Wired zone
sensors utilize a thermistor to vary the
voltage output in response to changes
in the zone temperature. Wiring to the
UCM controller must be 18- to 22-awg.
twisted pair wiring. The setpoint
adjustment range is 50–88ºF (10–31°C).
Depending upon the features available
in the model of sensor selected, the
zone sensor may require from a 2-wire
to a 5-wire connection. Wireless zone
sensors report the same zone
information as wired zone sensors,
but do so using radio transmitter
technology. Therefore with wireless,
wiring from the zone sensor to the
UCM is unnecessary.
Digital Display Zone Sensor with
Liquid Crystal Display (LCD)—
The digital display zone sensor contains
a sensing element, which sends a signal
to the UCM. A Liquid Crystal Display
(LCD) displays setpoint or space
temperature. Sensor buttons allow the
user to adjust setpoints, and allow space
temperature readings to be turned on or
off. The digital display zone sensor also
includes a communication jack for use
with a portable edit device, and an
override button to change the UCM
from unoccupied to occupied. The
override button has a cancel feature,
which returns the system to unoccupied
mode.
Trane LonTalk—The Controller is
designed to send and receive data using
SCC LonTalk profile. Current unit status
conditions and setpoints may be
monitored and/or edited from any of
several LonTalk-compatible systemlevel
controllers.
ANALOG ELECTRONIC CONTROLS
Analog Actuator—A Trane 3-wire,
24-VAC, floating-point control actuator
with linkage release button. Torque is
35 in-lb minimum and is non-spring
return with a 90-second drive time.
Travel is terminated by end stops at
fully-opened and -closed positions. An
integral magnetic clutch eliminates
motor stall.
Analog Electronic Controller—
The controller consists of a circuit
board that offers basic VAV unit
operation and additional override
functions and operates using 24 VAC
VAV-PRC008-EN

Fan-Powered
Parallel
Mechanical
Specifications
power. The controller uses a capacitive
type pressure transducer to maintain
consistent air delivery regardless of
system pressure changes. The enclosure
has 7/8" (22 mm) knockouts for remote
control wiring. A Trane electronic zone
sensor is required.
Analog Electronic Thermostat—
This single-temperature, wall-mounted
electronic device utilizes a thermistor
to vary the voltage output in response
to changes in the zone temperature.
Connections to the VAV unit circuit
board are made using standard threeconductor
thermostat wire. The setpoint
adjustment range is 63–85ºF (17–29°C).
The sensor is available in two models.
One model has a concealed, internallyadjustable
setpoint. The other model
has an externally-adjustable setpoint.
PNEUMATIC CONTROLS
Normally Open Actuator—Pneumatic
3 to 8 psig (20 to 55 kPa) spring-range
pneumatic actuator.
3011 Pneumatic Volume Regulator
(PVR)—The regulator is a thermostat
reset velocity controller, which provides
consistent air delivery within 5% of
cataloged flow down to 18% of unit
cataloged cfm, independent of changes
in system static pressure. Factorycalibrated,
field-adjustable setpoints for
minimum and maximum flows. Average
total unit bleed rate, excluding
thermostat, is 28.8 scim at
20 psig (7.87 ml/min at 138 kPa) supply.
UNIT OPTIONS
Power Fuse (VPCF, VPWF)—Optional
fuse is factory-installed in the primary
voltage hot leg.
HOT WATER VALVES
Two-Position Valve—The valve is a
field-adaptable, 2-way or 3-way
configuration and ships with a cap to
be field-installed when configured as a
2-way valve. All connections are
National Pipe Thread (NPT). The valve
body is forged brass with a stainless
steel stem and spring. Upon demand,
the motor strokes the valve. When the
actuator drive stops, a spring returns
the valve to its fail-safe position.
Flow Capacity – 1.17 Cv
Overall Diameter – ½" NPT
Close-off Pressure – 30 psi (207 kPa)
Flow Capacity – 3.0 Cv
Overall Diameter – 3/4" NPT
Close-off Pressure – 14.5 psi (100 kPa)
Flow Capacity – 6.4 Cv
Overall Diameter – 1" NPT
Close-off Pressure – 9 psi (62 kPa)
Maximum Operating Fluid
Temperature – 203ºF (95ºC)
Maximum system pressure – 300 psi
(2067 kPa)
Maximum static pressure – 300 psi
(2067 kPa)
Electrical Rating – 7 VA at 24 VAC,
6.5 Watts, 50/60 Hz
8 feet (2.44 m) of plenum rated wire
lead is provided with each valve.
Proportional Water Valve—The
valve is a field-adaptable, 2-way or
3-way configuration and ships with a
cap over the bottom port. This
configures the valve for 2-way
operation. For 3-way operation,
remove the cap. The valve is linear
equal percentage design. The intended
fluid is water or water and glycol (50%
maximum glycol). The actuator is a
synchronous motor drive. The valve is
driven to a predetermined position by
the UCM controller using a
proportional plus integral control
algorithm. If power is removed, the
valve stays in its last position. The
actuator is rated for plenum
applications under UL 94-5V and UL
873 standards.
Pressure and Temperature Ratings –
The valve is designed and tested in full
compliance with ANSI B16.15 Class
250 pressure/temperature ratings,
ANSI B16.104 Class IV control shutoff
leakage, and ISA S75.11 flow
characteristic standards.
Flow Capacity – 0.7 Cv, 2.2 Cv, 3.8 Cv,
6.6 Cv
Overall Diameter – ½" NPT, ¾" NPT
(6.6 Cv)
Maximum Allowable Pressure –
300 psi (2068 kPa)
Maximum Operating Fluid
Temperature – 200ºF (93°C)
Maximum Close-off Pressure – 55 psi
(379 kPa)
Electrical Rating – 6 VA at 24 VAC.
10 feet (3.05 m) of plenum rated
22-gage wire for connection.
Terminations are #6 stabs.
VAV-PRC008-EN
FPP 37

Fan-Powered
Series
Table of
Contents
Service Model Number Description FPS 2
Selection Procedure FPS 3 – 5
General Data – Valve/Controller Airflow Guidelines FPS 6
Performance Data – Air Pressure Requirements FPS 7 – 8
Performance Data – Fan Curves FPS 9 – 12
Performance Data – Hot Water Coil FPS 13 – 16
Performance Data – Electrical Data FPS 17 – 19
Performance Data – Acoustics FPS 20 – 25
Dimensional Data FPS 26 – 37
Mechanical Specifications FPS 38 – 40
VAV-PRC008-EN FPS 1

Fan-Powered
Series
Service
Model Number
Description
Digit 1, 2—Unit Type
VS VariTrane fan-powered series
Digit 3—Reheat
C Cooling Only
E Electric Heat
W Hot Water Heat
Digit 4—Development Sequence
F Sixth
Digit 5, 6—Primary Air Valve
04 4" inlet (225 max cfm)
05 5" inlet (350 max cfm)
06 6" inlet (500 max cfm)
08 8" inlet (900 max cfm)
10 10" inlet (1400 max cfm)
12 12" inlet (2000 max cfm)
14 14" inlet (3000 max cfm)
16 16" inlet (4000 max cfm)
Digit 7, 8—Secondary Air Valve
00 N/A
Digit 9—Fan
P 02SQ fan (700 nominal cfm)
Q 03SQ fan (1200 nominal cfm)
R 04SQ fan (1550 nominal cfm)
S 05SQ fan (1900 nominal cfm)
T 06SQ fan (2600 nominal cfm)
U 07SQ fan (3000 nominal cfm)
Fan Note: See fan curves for specific
airflows
Digit 10, 11—Design Sequence
A0 Design Sequence (Factory
assigned)
Digit 12, 13, 14, 15—Controls
ENON No controls, field-installed
DDC or analog
ENCL ENON with control enclosure
PNON No controls, field-installed
pneumatic
DD00 Trane elec actuator only
DD01 DDC – cooling only
DD02 DDC – N.C. on/off water control
DD03 DDC – prop hot water control
DD04 DDC – on/off electric heat
control
DD05 DDC – pulse-width modulation
electric heat control
DD07 DDC N.O. on/off hot water
control
DD11 LonTalk DDC Controller—
Cooling only
DD12 LonTalk DDC Controller w/ N.C.
on/off hot water control
DD13 LonTalk DDC Controller w/
proportional hot water control
DD14 LonTalk DDC Controller–on/off
electric heat control
DD15 LonTalk DDC Controller w/
pulse-width modulation
electric heat control
DD17 LonTalk DDC Controller w/ N.O.
on/off hot water control
FPS 2
AT08 FM Automated Logic ZN341v+
AT10 FM Automated Logic ZN141v+
FM00 FM customer actuator &
control
FM01 FM Trane actuator w/
customer-supplied controller
HNY2 FM Honeywell W7751H
INV3 FM Invensys MNL-V2R
PWR1 FM Siemens 540-100 w/
GDE131.1 actuator
PWR2 FM Siemens 540-103 w/
GDE131.1 actuator
PW12 FM Siemens 550-065
PW13 FM Siemens 550-067
VMA2 FM Johnson VMA-1420
EI71 Analog fan-powered series
with optional on/off reheat
PN00 PN – N.O. Trane pneumatic
actuator, R.A. stat
PN51 PN – N.O. PVR, duct pressure
switch, R.A. stat
PN52 PN – N.O. PVR, dual pressure
main, R.A. stat
Notes:
N.C. = Normally-closed
N.O. = Normally-opened
DA Stat = Direct-acting pneumatic t-stat (by
others)
RA Stat = Reverse-acting pneumatic t-stat
(by others)
PN = Pneumatic
FM = Factory installation of customersupplied
controller
PVR = Pneumatic Volume Regulator
Digit 16—Insulation
A 1/2" Matte-faced
B 1" Matte-faced
C 1/2" Foil-faced
D 1" Foil-faced
F 1" Double-wall
G 3/8" Closed-cell
Digit 17—Motor Type
D PSC Motor
E High-efficiency motor (ECM)
Digit 18—Motor Voltage
1 115/60/1
2 277/60/1
3 347/60/1
4 208/60/1
5 230/50/1
Digit 19—Outlet Connection
1 Flanged
2 Slip & Drive
Digit 20—Attenuator
0 None
W With
Digit 21—Water Coil
0 None
3 1-Row–Discharge installed, LH
4 1-Row–Discharge installed, RH
5 2-Row–Discharge installed, LH
6 2-Row–Discharge installed, RH
Digit 22—Electrical Connections
L Left
R Right
W Narrow Corridor LH, Hi-Volt
Inlet Facing
X Narrow Corridor RH, Hi-Volt
Inlet Facing
Y Narrow Corridor LH, Hi-Volt
Discharge Facing
X Narrow Corridor RH, Hi-Volt,
Discharge Facing
Water Coil and Electrical Connections
Note: Airflow hitting you in the face.
Digit 23—Transformer
0 N/A (provided as standard)
Digit 24—Disconnect Switch
0 None
W With
Note:
VSCF, VSWF – Toggle Disconnect
VSEF – Door Interlocking Power
Disconnect
Digit 25—Power Fuse
0 None
W With
Digit 26—Electric Heat Voltage
0 None
A 208/60/1
B 208/60/3
C 240/60/1
D 277/60/1
E 480/60/1
F 480/60/3
G 347/60/1
H 575/60/3
J 380/50/3
K 120/60/1
Digit 27, 28, 29—Electric Heat kW
000 None
050 0.5 kW
010 1.0 kW
015 1.5 kW
240 24.0 kW
Digit 30—Electric Heat Stages
0 None
1 1 Stage
2 2 Stages Equal
3 3 Stages Equal
Digit 31—Contactors
0 None
1 24-volt magnetic
2 24-volt mercury
3 PE with magnetic
4 PE with mercury
Digit 32—Airflow Switch
0 None
W With
VAV-PRC008-EN

Fan-Powered
Series
Selection
Procedure
This section describes the elements
and process required to properly select
series fan-powered VAV terminals, and
includes a specific example. The
selection procedure is iterative in
nature, which makes computer
selection desirable.
Selection of fan-powered VAV
terminals involves four elements:
• Air valve selection
• Heating coil selection
• Fan size and speed selection
• Acoustics
NOTE: Use the same procedures for
selecting Low-Height Series Fan-
Powered Units as used for selecting
Series Fan-Powered Units.
Air Valve Selection
Provided in the Performance Data—Air
Pressure Requirements section of the
catalog is the unit air pressure drop at
varying airflows. To select an air valve,
determine the airflow required at
design cooling. Next, select an air
valve diameter that will allow proper
airflow modulation, (a velocity of 1600
– 2000 FPM is recommended). Keep in
mind that modulation below 300
FPM is not recommended. Proper
selection requires defining the
minimum valve airflow (in either
heating or cooling) and maintaining at
least 300 FPM through the air valve.
The minimum is typically set based on
ventilation requirements. If zone
ventilation does not come through the
VAV unit, a minumum valve position
can also be zero.
Heating Coil Selection
Supply Air Temperature
The first step required when selecting a
heating coil is to determine the heating
supply air temperature to the space,
calculated using the heat transfer
equation. Air temperature difference is
defined as the heating supply air
temperature to the space minus the
winter room design temperature. The
zone design heat loss rate is denoted
by the letter Q. Supply air temperature
to the space equals the leaving air
temperature (LAT) for the terminal unit.
Coil Leaving Air Temperature
Once the terminal unit LAT is
determined, the heating requirements
for the coil can be calculated. Electric
and hot water coil LAT equals the LAT
for the unit because, in each case, the
coil is located on the unit discharge.
Coil Entering Air Temperature
Unit heat is mounted on the discharge
of the unit. Therefore, electric and hot
water coil EAT equals the temperature
of blended primary air and plenum air.
Capacity Requirement
Once both coil EAT and LAT are
determined, the heat transfer (Q) for the
coil must be calculated using the heat
transfer equation. For electric heat units,
the Q value must be converted from Btu
to kW for heater selection. The required
kW should be compared to availability
charts in the performance data section
for the unit selected. For hot water heat
units, reference the capacity charts in
the performance data section for the
required heat transfer Q and airflow to
pick the appropriate coil.
Fan Size and Motor Selection
Fan Airflow
Fan airflow is equal to the unit design
flow in both heating and cooling modes.
Fan External Static Pressure
Fan external static pressure is the total
resistance experienced by the fan,
which may include downstream
ductwork and diffusers, heating coils,
and sound attenuators. As total airflow
varies, so will static pressure, making
calculation of external static pressure
dependent on unit type.
With series fan-powered terminal units,
all airflow passes through the fan.
External static pressure requirements
are the sum of the individual
component pressure requirements at
the design airflow of the unit.
Fan Motor Type
The fan motor type that will be used for
the unit will need to be known before
fan selection can begin. The ECM motor
offers more efficient operation than
the standard single-speed PSC motor
and will use different fan curves.
Because series fans operate in both
heating and cooling mode, payback is
typically 2–3 years for the premium
ECM option.
Refer to the Features and Benefits
section to determine which motor is
more appropriate for the unit
Selection
Once fan airflow and external static
pressure is determined, reference the
fan curves in the performance data
section. Cross plot both airflow and
external static pressure on each
applicable graph. If selecting with an
ECM motor, make sure you use the
ECM fan curves. If the point is in
between the high and low limits of the
graph, that fan will work.
It is common to identify more than one
fan that can meet the design
requirements. Typically selection
begins with the smallest fan available
to meet capacity. If this selection does
not meet acoustical requirements,
upsizing the fan and operating it at a
slower speed can be done for quieter
operation.
Acoustics
Air Valve Generated Noise
To determine the noise generated by
the air valve, two pieces of information
are required; design airflow and design
air pressure drop. The design air
pressure drop is determined by taking
the difference between design inlet
and static pressure (the valve’s most
over-pressurized condition) and
external static pressure at design
cooling flow. This represents a worstcase
operating condition for the valve.
In summary, fan + 100% valve radiated
sound is the dominant acoustical
impact on the series VAV system.
Fan Generated Noise
To determine fan noise levels, fan
airflow, external static pressure and
speed information is required.
Evaluation Elements
Air valve and fan are evaluated
together because they have
simultaneous operation.
Access the appropriate acoustics
table(s) of the catalog and determine
the sound power and NC prediction for
both the discharge and radiated paths.
It is important to understand that
discharge air noise is generally not a
concern with fan-powered terminals.
Radiated noise from the unit
casing typically dictates the noise
level of the space (radiated fan +
100% valve).
If the entire unit or any element of it is
generating noise in excess of the Noise
Criteria requirements, the size of the
appropriate portion of the terminal
should be increased. Because the
selection procedure is iterative, care
should be taken by the designer to
confirm that the change in selection
does not affect other elements of the
unit or system design.
VAV-PRC008-EN FPS 3

Fan-Powered
Series
Selection
Procedure
Selection Example—
Series With Hot Water Heat and ECM
Air Valve Selection
Required Information:
Design cooling airflow 1000 cfm
Minimum ventilation airflow 200 cfm
Maximum unit APD 0.40 in. wg
A 10" air valve is selected.
Check–is minimum airflow above
300 FPM?
Answer–Yes. Minimum cfm allowable =
165 cfm. (See General Data—Valve/
Controller Guidelines pp FPS 8).
The 03SQ fan will be used in this
instance. By interpolating, you can
choose a 10" air valve with wide-open
air pressure drop of 0.32 in. wg.
Heating Coil Selection
Required Information:
Zone design heat loss 30000 Btu
Design heating airflow 1000 cfm
Winter room design temp. 68ºF
Coil entering water temp. 180ºF
Minimum primary airflow 200 cfm
Plenum temperature 70ºF
Primary air temperature 55ºF
Coil flow rate:
2 gpm
Heat Transfer Equation (Btu)
Q = 1.085 x Cfm x ∆ Temperature
For the heating zone, the temperature
difference is the zone supply air
temperature (SAT) minus the winter
room design temperature.
30000 Btu = 1.085 x 1000 x (SAT-68°F)
SAT = 96ºF
Because the hot water coil is on the
unit discharge of a series fan-powered
unit, the unit supply air temperature is
equal to the coil LAT. Coil entering air
temperature (EAT) is a mix of plenum
air and the minimum primary airflow.
1000 cfm x Coil EAT =
200 cfm x 55ºF +
(1000 cfm - 200 cfm) x 70ºF
Coil EAT = 67ºF
For the heating coil, the temperature
difference is the calculated coil LAT
minus the coil EAT (Plenum Air
Temperature).
Coil Q = 1.085 x 1000 x (96-70) =
31,465 Btu
On a series unit the hot water coil is
located on the discharge, so the total
heating airflow, 1000 cfm, passes
through the coil.
Coil Performance Table
Selection:
Performance:
Size 03SQ fan, 1-row coil at 2 gpm =
32.23 MBh
1-row Coil at 2 gpm= 0.83 ft WPD
Fan Selection
Required Information:
Fan airflow:
1000 cfm
Downstream static pressure
at design airflow: 0.25 in. wg
A size 03SQ fan can operate at up to
1150 cfm with a 1-row coil or 1100 with
a 2-row coil and 0.25" downstream
static pressure. Inlet and coil selections
should be verified with TOPSS
electronic selections.
If an attenuator is required, use the
attenuator air pressure drop tables to
define additional fan static pressure.
Acoustics
Required Information:
Design inlet static press: 0.75 in. wg
NC criteria
(general office space): NC-40
The selection is a VSWF Series Fan-
Powered Terminal Unit, 10" primary,
series fan size 03SQ, with a 1-row hot
water coil.
Determine the casing radiated
noise level because it typically
dictates the sound level (NC) of
the space. With a series unit, the air
valve and fan operate simultaneously,
so the chart for air valve and fan sound
data must be consulted.
The acoustics value of a size 10" air
valve with a size 03SQ fan has the
following tabulated results:
Octave 2 3 4 5 6 7 NC
Band
Sound 70 65 63 61 59 59 38
Power
The predicted NC level for design
conditions is NC-38.
Note: Make sure the water coil
acoustical impact is considered. For
this example, the appurtenance effect
adds one (1) NC to fan-only radiated
sound. Because this does not set NC
for this selection, it can be overlooked.
The addition of an attenuator (see
same appurtenance effect tables
reduces the NC four (4) points,
resulting in a final selection NC = 30 (if
required).
Caution: Do not overlook the water coil
impact on acoustics. A good rule of
thumb is that it will add 1 to 2 NC to
"fan only" radiated sound for most
applications.
Series Fan-Powered Unit with
Hot Water Coil
FPS 4
VAV-PRC008-EN

Fan-Powered
Series
Selection
Procedure
Computer Selection
The advent of personal computers has
served to automate many processes
that were previously repetitive and
time-consuming. One of those tasks is
the proper scheduling, sizing, and
selection of VAV terminal units. Trane
has developed a computer program to
perform these tasks. The software is
called the Trane Official Product
Selection System (TOPSS).
The TOPSS program will take the input
specifications and output the properly
sized VariTrane VAV terminal unit along
with the specific performance for that
size unit.
The program has several required
fields, denoted by red shading in the
TOPSS screen, and many other
optional fields to meet the criteria you
have. Required values include
maximum and minimum airflows,
control type, and model. If selecting
models with reheat, you will be
required to enter information to make
that selection also. The user is given
the option to look at all the information
for one selection on one screen or as a
schedule with the other VAV units on
the job.
The user can select single-duct, dualduct,
and fan-powered VAV boxes with
the program, as well as most other
Trane products, allowing you to select
all your Trane equipment with one
software program.
The program will also calculate sound
power data for the selected terminal
unit. The user can enter a maximum
individual sound level for each octave
band or a maximum NC value. The
program will calculate acoustical data
subject to default or user supplied
sound attenuation data.
Schedule View
The program has many time-saving
features such as:
• Copy/Paste from spreadsheets like
Microsoft ® Excel
• Easily arranged fields to match your
schedule
• Time-saving templates to store default
settings
The user can also export the Schedule
View to Excel to modify and put into a
CAD drawing as a schedule.
Specific details regarding the program,
its operation, and how to obtain a copy
of it are available from your local Trane
sales office.
Required entry fields (in Red
on TOPSS screen).
Rearrange what fields you see
and in what order with a few
clicks of a button.
VAV-PRC008-EN FPS 5

Fan-Powered
Series
General Data—
Valve/Controller
Airflow Guidelines
Primary Airflow Control Factory Settings – I-P
Control Air Valve Maximum Valve Maximum Controller Minimum Controller Constant Volume
Type Size (in.) Cfm Cfm Cfm Cfm
4 225 25–225 0, 25–225 25–225
5 350 40–350 0, 40–350 40–350
6 500 60–500 0, 60–500 60–500
Direct Digital Control/ 8 900 105–900 0, 105–900 105–900
UCM 10 1400 165–1400 0, 165–1400 165–1400
12 2000 240–2000 0, 240–2000 240–2000
14 3000 320–3000 0, 320–3000 320–3000
16 4000 420–4000 0, 420–4000 420–4000
4 225 38–225 0, 38–225 38–225
5 350 63–350 0, 63–350 63–350
6 500 73–500 0, 73–500 73–500
Pneumatic with 8 900 134–900 0, 134–900 134–900
Volume Regulator 10 1400 215–1400 0, 215–1400 215–1400
12 2000 300–2000 0, 300–2000 300–2000
14 2885 408–2887 0, 408–2887 408–2887
16 3785 536–3789 0, 536–3789 536–3789
4 225 52–225 0, 52–225 52–225
5 350 82–350 0, 82–350 82–350
6 500 120–500 0, 120–500 120–500
8 900 210–900 0, 210–900 210–900
Analog Electronic 10 1400 328–1400 0, 328–1400 328–1400
12 2000 470–2000 0, 470–2000 470–2000
14 3000 640–3000 0, 640–3000 640–3000
16 4000 840–4000 0, 840–4000 840–4000
Primary Airflow Control Factory Settings – SI
Control Air Valve Maximum Valve Maximum Controller Minimum Controller Constant Volume
Type Size (in.) L/s L/s L/s L/s
4 106 12–106 0, 12–106 12–106
5 165 19–165 0, 19–165 19–165
6 236 28–236 0, 28–236 28–236
Direct Digital Control/ 8 425 50–425 0, 50–425 50–425
UCM 10 661 77–661 0, 77–661 77–661
12 944 111–944 0, 111–944 111–944
14 1416 151–1416 0, 151–1416 151–1416
16 1888 198–1888 0, 198–1888 198–1888
4 106 18–106 0, 18–106 18–106
5 165 30–165 0, 30–165 30–165
6 236 35–236 0, 35–236 35–236
Pneumatic with 8 425 63–425 0, 63–425 63–425
Volume Regulator 10 661 102–661 0, 102–661 102–661
12 944 141–944 0, 141–944 141–944
14 1362 193–1363 0, 193–1363 193–1363
16 1787 253–1788 0, 253–1788 253–1788
4 106 25–106 0, 25–106 25–106
5 165 39–165 0, 39–165 39–165
6 236 57–236 0, 57–236 57–236
8 425 100–425 0, 100–425 100–425
Analog Electronic 10 661 156–661 0, 156–661 156–661
12 944 222–944 0, 222–944 222–944
14 1416 303–1416 0, 303–1416 303–1416
16 1888 397–1888 0, 397–1888 397–1888
Note: Maximum airflow must be greater than or equal to minimum airflow.
FPS 6
VAV-PRC008-EN

Unit Air Pressure Drop – in. wg (I-P)
Fan/Inlet Airflow
Size Cfm Unit
2SQ–04 200 0.03
225 0.03
2SQ–05 200 0.03
250 0.04
300 0.06
350 0.09
2SQ–06 200 0.03
300 0.06
400 0.12
500 0.19
2SQ–08 200 0.01
400 0.05
550 0.10
700 0.16
2SQ–10 200 0.01
400 0.02
550 0.06
700 0.11
03SQ–06 250 0.10
300 0.15
400 0.34
500 0.45
03SQ–08 250 0.05
500 0.16
700 0.31
900 0.49
03SQ–10 250 0.03
550 0.11
850 0.24
1200 0.44
03SQ–12 250 0.01
550 0.07
850 0.16
1200 0.32
04SQ–06 330 0.16
400 0.29
450 0.35
500 0.48
04SQ–08 330 0.04
500 0.12
700 0.25
900 0.44
04SQ–10 330 0.02
700 0.12
1050 0.29
1400 0.54
04SQ–12 330 0.02
750 0.11
1150 0.28
1550 0.51
04SQ–14 330 0.02
750 0.11
1150 0.26
1550 0.48
Note: Unit pressure drops do not include hot water coil or attenuator
pressure drops.
Fan-Powered
Series
Fan/Inlet Airflow
Size Cfm Unit
05SQ–10 400 0.01
750 0.08
1100 0.22
1400 0.39
05SQ–12 400 0.01
900 0.09
1400 0.28
1900 0.58
05SQ–14 400 0.01
900 0.09
1400 0.26
1900 0.53
6SQ–10 700 0.01
950 0.03
1200 0.12
1400 0.22
6SQ–12 700 0.01
1150 0.01
1600 0.12
2000 0.27
6SQ–14 700 0.01
1350 0.04
2000 0.19
2600 0.41
6SQ–16 700 0.01
1350 0.04
2000 0.19
2600 0.41
7SQ–10 850 0.01
1000 0.05
1200 0.12
1400 0.22
7SQ–12 850 0.01
1200 0.02
1600 0.12
2000 0.27
7SQ–14 850 0.01
1550 0.07
2250 0.27
3000 0.59
7SQ–16 850 0.01
1550 0.07
2250 0.27
3000 0.59
Performance
Data—Air Pressure
Requirements (I-P)
Coil Air Pressure Drop – in. wg (I-P)
Fan Airflow 1-Row HW 2-Row HW
Size Cfm (in. wg) (in. wg)
02SQ 200 0.01 0.03
300 0.02 0.05
400 0.04 0.08
500 0.06 0.11
600 0.08 0.15
03SQ 250 0.01 0.02
04SQ 500 0.02 0.05
750 0.05 0.10
1000 0.08 0.15
1250 0.12 0.22
1500 0.16 0.30
05SQ 400 0.01 0.03
700 0.04 0.08
1000 0.07 0.13
1250 0.10 0.19
1500 0.14 0.26
1750 0.19 0.34
06SQ 600 0.02 0.04
07SQ 1000 0.04 0.08
1500 0.08 0.15
2000 0.13 0.23
2500 0.19 0.34
3000 0.27 0.47
Note: HW Coil Only pressure drops do not include unit
pressure drop.
Attenuator Air
Pressure Drop (I-P)
Fan Plenum
Size Cfm Attenuator
02SQ 50 0.00
150 0.00
350 0.02
550 0.05
750 0.10
950 0.16
03SQ 50 0.00
250 0.00
500 0.02
750 0.06
1000 0.13
1200 0.21
04SQ 50 0.00
300 0.02
600 0.07
900 0.14
1200 0.24
1500 0.35
05SQ 50 0.00
300 0.01
650 0.05
1000 0.14
1300 0.28
1650 0.52
06SQ 50 0.00
500 0.00
900 0.02
1300 0.07
1700 0.17
2100 0.36
07SQ 50 0.00
800 0.01
1200 0.05
1600 0.14
2000 0.30
2400 0.58
Note: Plenum cfm = (Fan cfm) – (Min.
valve cfm)
VAV-PRC008-EN FPS 7

Fan-Powered
Series
Performance
Data—Air Pressure
Requirements (SI)
Unit Air Pressure Drop – Pa (SI)
Fan/Inlet Airflow
Size L/s Unit
2SQ–04 94 7
106 9
2SQ–05 94 7
118 11
142 16
165 22
2SQ–06 94 7
142 16
189 29
236 46
2SQ–08 94 2
189 12
260 24
330 39
2SQ–10 94 2
189 5
260 14
330 28
03SQ–06 118 25
142 38
189 85
236 112
03SQ–08 118 12
236 41
330 76
425 123
03SQ–10 118 8
260 28
401 59
566 110
03SQ–12 118 4
260 17
401 40
566 79
04SQ–06 156 40
189 73
212 88
236 119
04SQ–08 156 10
236 29
330 63
425 109
04SQ–10 156 5
330 30
495 73
661 135
04SQ–12 156 5
354 28
543 69
731 127
04SQ–14 156 5
354 27
543 65
731 120
Fan/Inlet Airflow
Size L/s Unit
05SQ–10 189 1
354 20
519 55
661 98
05SQ–12 189 2
425 23
661 71
897 144
05SQ–14 189 2
425 21
661 65
897 131
6SQ–10 330 2
448 8
566 31
661 55
6SQ–12 330 2
543 3
755 31
944 68
6SQ–14 330 2
637 9
944 47
1227 101
6SQ–16 330 2
637 9
944 47
1227 101
7SQ–10 401 2
472 12
566
661 55
7SQ–12 401 2
566 5
755 31
944 68
7SQ–14 401 2
731 18
1062 67
1416 147
7SQ–16 401 2
731 18
1062 67
1416 147
Note: Unit pressure drops do not include hot water coil or attenuator
pressure drops.
Coil Air Pressure Drop – Pa (SI)
Fan Airflow 1-Row HW 2-Row HW
Size L/s (Pa) (Pa)
02SQ 250 3 7
400 6 12
500 10 19
600 14 28
700 20 38
03SQ 118 2 5
04SQ 236 6 13
354 12 24
472 19 38
590 29 55
708 40 75
05SQ 189 4 8
330 9 19
472 17 33
590 25 48
708 35 65
826 47 85
06SQ 850 4 9
07SQ 1300 9 19
1700 19 36
2150 31 58
2550 47 85
3000 66 117
Note: HW Coil Only pressure drops do not include unit
pressure drop.
Attenuator Air
Pressure Drop (SI)
Fan Plenum Attenuator
Size L/s
02SQ 24 0
71 1
165 4
260 12
354 24
448 40
03SQ 24 0
118 1
236 5
354 15
472 32
566 52
04SQ 24 0
142 5
283 18
425 36
566 59
708 88
05SQ 24 0
142 2
307 12
472 36
613 70
779 129
06SQ 24 0
236 1
425 4
613 16
802 42
991 90
07SQ 24 0
378 3
566 12
755 34
944 75
1133 144
Note: Plenum cfm = (Fan cfm) – (Min.
valve cfm)
FPS 8
VAV-PRC008-EN

Fan-Powered
Series
Performance
Data—
Fan Curves
Notes:
1. When attenuator is required,
add inlet attenuator pressure to
discharge static pressure for final
fan performance.
Discharge Static Pressure
Pa In. wg Series 02SQ—PSC
150
125
100
75
50
25
0.60
0.50
0.40
0.30
0.20
0.10
190 cfm min
(90 L/s)
0
0.00
100 200 300 400 500 600 700 800
47 94 142 189 236
283
330 378
Airflow
Cfm
L/s
Pa
199
In. wg
0.80
Series 03SQ—PSC
174
0.70
VSCF and VSEF maximum
Minimum
1-row coil maximum
2-row coil maximum
Discharge Static Pressure
150
125
100
75
50
0.60
0.50
0.40
0.30
0.20
250 cfm min
(118 L/s)
25
0.10
0
0.00
200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 Cfm
94 142 189 236 283 330 378 425 472 519 566 614 661 L/s
Airflow
Pa
199
In. wg
0.80
Series 04SQ—PSC
174
0.70
Discharge Static Pressure
150
125
100
75
50
0.60
0.50
0.40
0.30
0.20
330 cfm min
(156 L/s)
25
0.10
0
0.00
300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 Cfm
142 189 236 283 330 378 425 472 519 566 614 661 708 755 802 L/s
VAV-PRC008-EN FPS 9
Airflow

Fan-Powered
Series
Performance
Data—
Fan Curves
Discharge Static Pressure
Pa
199
174
150
125
100
75
50
In. wg
0.80
0.70
0.60
0.50
0.40
0.30
0.20
400 cfm min
(189 L/s)
Series 05SQ—PSC
Notes:
1. When attenuator is required,
add inlet attenuator pressure to
discharge static pressure for final
fan performance.
25
0.10
0
0.00
300 500 700 900 1100 1300 1500 1700 1900 2100 Cfm
142 236 330 425 519 614 708 802 897 991 L/s
Airflow
Pa In. wg Series 06SQ—PSC
199
0.80
174
0.70
150
0.60
Discharge Static Pressure
125
100
75
50
0.50
0.40
0.30
0.20
700 cfm min
(330 L/s)
VSCF and VSEF maximum
Minimum
1-row coil maximum
2-row coil maximum
25
0.10
0
0.00
400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800
189 283 378 472 566 661 755 850 944 1038 1133 1227 1322
Airflow
Cfm
L/s
Pa In. wg Series 07SQ—PSC
199 0.80
174
0.70
Discharge Static Pressure
150
125
100
75
50
0.60
0.50
0.40
0.30
0.20
850 cfm min
(401 L/s)
25
0.10
0
0.00
800 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000 3200 3400
378 472 566 661 755 850 944 1038 1133 1227 1322 1416 1510 1605
Cfm
L/s
FPS 10
Airflow
VAV-PRC008-EN

Fan-Powered
Series
ECM Data—
Fan Curves
Notes:
1. ECMs (Electrically Commutated
Motors) are ideal for systems seeking
maximum motor efficiency.
2. When attenuator is required, add inlet
attenuator pressure to discharge
static pressure for final fan
performance.
Discharge Static Pressure
Pa In. wg
VSxF Size 03SQ—ECM
125
100
75
50
25
0.50
0.40
0.30
0.20
0.10
200 cfm min
(94 L/s)
0
0.00
100 200 300 400 500 600 700 800 900 1000 1100 1200
47 94 142 189 236 283 330 378 425 472 519 566
Airflow
Cfm
L/s
Pa
125
In. wg
0.50
VSxF 04SQ—ECM
100
0.40
VSCF and VSEF maximum
Minimum
1-row coil maximum
2-row coil maximum
Discharge Static Pressure
75
50
0.30
0.20
240 cfm min
(113 L/s)
25
0.10
0
0.00
200 400 600 800 1000 1200 1400 1600 Cfm
94 189
283 378
472
566
661 755 L/s
Airflow
Pa
125
In. wg
0.50
VSxF 05SQ—ECM
100
0.40
Discharge Static Pressure
75
50
0.30
0.20
350 cfm min
(165 L/s)
25
0.10
0
0.00
300 500 700 900 1100 1300 1500 1700 1900 2100 Cfm
142 236 330 425 519 614 708 802 897 991 L/s
Airflow
VAV-PRC008-EN FPS 11

Fan-Powered
Series
ECM Data—
Fan Curves
Discharge Static Pressure
Pa In. wg VSxF 06SQ—ECM
125 0.50
100
75
50
25
0.40
0.30
0.20
0.10
700 cfm min
(330 L/s)
Notes:
1. ECMs (Electrically Commutated
Motors) are ideal for systems seeking
maximum motor efficiency.
2. When attenuator is required, add inlet
attenuator pressure to discharge
static pressure for final fan
performance.
0
0.00
600 800 1,000 1,200 1,400 1,600 1,800 2,000 2,200 2,400 2,600
283 378 472 566 661 755 850 944 1038 1133 1227
Airflow
Cfm
L/s
VSCF and VSEF maximum
Minimum
1-row coil maximum
2-row coil maximum
FPS 12
VAV-PRC008-EN

Fan-Powered
Series
Performance
Data—Hot Water
Coil (I-P)
Fan Size 02SQ (I-P)
Water
Pressure
Airflow (Cfm)
Rows Gpm Drop (ft) 150 200 250 300 350 400 450 500 550 600 700
1-Row 0.50 0.16 — — — — — — — — — — —
Capacity 1.0 0.53 9.14 10.34 11.34 12.20 12.97 13.67 14.32 14.93 15.51 16.05 17.02
MBH 2.0 1.85 9.94 11.40 12.63 13.73 14.73 15.66 16.52 17.33 18.10 18.82 20.18
3.0 3.85 10.25 11.80 13.14 14.34 15.43 16.45 17.41 18.32 19.18 20.01 21.56
4.0 6.51 10.41 12.02 13.41 14.66 15.81 16.89 17.90 18.87 19.78 20.66 22.32
5.0 9.79 10.51 12.15 13.58 14.87 16.05 17.17 18.21 19.21 20.17 21.08 22.81
2-Row 1.0 1.00 12.59 15.23 17.40 19.21 20.74 22.06 23.19 24.19 25.07 25.85 27.19
Capacity 2.0 3.42 13.42 16.60 19.34 21.73 23.84 25.71 27.39 28.90 30.27 31.52 33.72
MBH 3.0 7.05 13.71 17.08 20.04 22.66 25.00 27.12 29.03 30.77 32.37 33.84 36.46
4.0 11.82 13.86 17.33 20.40 23.14 25.62 27.86 29.90 31.77 33.50 35.10 37.96
5.0 17.68 13.94 17.48 20.62 23.44 25.99 28.32 30.44 32.40 34.21 35.89 38.92
Fan Sizes 03SQ 04SQ (I-P)
Water
Pressure
Airflow (Cfm)
Rows Gpm Drop (ft) 200 300 400 550 700 850 1000 1150 1300 1450 1600
1-Row 1.0 0.27 — — — — — — — — — — —
Capacity 2.0 1.01 15.03 18.19 20.63 23.57 26.00 28.09 29.99 31.71 33.27 34.68 35.97
MBH 3.0 2.19 15.70 19.23 22.00 25.41 28.29 30.81 33.08 35.15 37.05 38.83 40.51
4.0 3.81 16.06 19.80 22.76 26.44 29.59 32.38 34.91 37.23 39.38 41.38 43.26
5.0 5.85 16.29 20.16 23.24 27.11 30.43 33.40 36.11 38.60 40.93 43.10 45.15
6.0 8.32 16.45 20.41 23.58 27.57 31.02 34.12 36.96 39.58 42.03 44.34 46.51
7.0 11.20 16.56 20.59 23.82 27.91 31.46 34.66 37.59 40.31 42.86 45.26 47.54
8.0 14.50 16.65 20.73 24.01 28.18 31.80 35.07 38.08 40.88 43.51 45.99 48.34
9.0 18.22 16.72 20.84 24.17 28.39 32.08 35.41 38.48 41.34 44.03 46.57 48.99
10.0 22.35 16.78 20.93 24.29 28.56 32.30 35.68 38.80 41.71 44.46 47.05 49.52
2-Row 1.0 0.39 — — — — — — — — — — —
Capacity 2.0 1.41 18.93 25.58 30.93 37.20 41.99 45.78 48.85 51.38 53.52 55.34 56.92
MBH 3.0 3.01 19.46 26.72 32.79 40.20 46.12 50.97 55.02 58.45 61.41 63.98 66.24
4.0 5.16 19.72 27.30 33.75 41.80 48.38 53.88 58.54 62.56 66.05 69.14 71.88
5.0 7.84 19.88 27.65 34.34 42.79 49.81 55.73 60.81 65.23 69.11 72.55 75.63
6.0 11.06 19.98 27.88 34.74 43.47 50.79 57.01 62.40 67.10 71.26 74.98 78.31
7.0 14.81 20.06 28.05 35.02 43.96 51.50 57.96 63.57 68.49 72.87 76.79 80.32
8.0 19.07 20.12 28.18 35.24 44.34 52.05 58.68 64.46 69.57 74.11 78.19 81.88
Fan Size 05SQ (I-P)
Water
Pressure
Airflow (Cfm)
Rows Gpm Drop (ft) 350 500 650 800 1000 1200 1400 1600 1800 2000 2150
1-Row 1.0 0.29 — — — — — — — — — — —
Capacity 2.0 1.08 21.67 25.25 28.09 30.49 33.30 35.79 37.96 39.88 41.61 43.17 44.25
MBH 3.0 2.33 23.02 27.14 30.49 33.38 36.75 39.71 42.39 44.89 47.17 49.26 50.73
4.0 4.03 23.76 28.20 31.85 35.03 38.78 42.12 45.14 47.92 50.48 52.91 54.64
5.0 6.18 24.23 28.87 32.72 36.10 40.11 43.71 46.98 50.01 52.81 55.44 57.30
6.0 8.76 24.55 29.34 33.34 36.86 41.05 44.83 48.29 51.50 54.50 57.30 59.30
7.0 11.79 24.79 29.69 33.79 37.42 41.75 45.67 49.28 52.63 55.76 58.71 60.82
8.0 15.24 24.97 29.95 34.14 37.85 42.29 46.33 50.05 53.51 56.76 59.82 62.01
2-Row 1.0 0.39 — — — — — — — — — — —
Capacity 2.0 1.39 29.95 37.69 43.62 48.30 53.17 56.95 59.97 62.43 64.49 66.24 67.38
MBH 3.0 2.96 31.40 40.36 47.58 53.51 59.95 65.16 69.45 73.07 76.15 78.82 80.59
4.0 5.08 32.14 41.74 49.69 56.37 63.77 69.90 75.05 79.45 83.26 86.60 88.84
5.0 7.72 32.58 42.59 51.00 58.16 66.21 72.97 78.72 83.68 88.02 91.85 94.45
6.0 10.90 32.87 43.16 51.88 59.39 67.90 75.11 81.30 86.69 91.42 95.63 98.49
7.0 14.59 33.08 43.57 52.53 60.28 69.14 76.69 83.22 88.93 93.97 98.47 101.54
8.0 18.79 33.24 43.88 53.02 60.96 70.09 77.91 84.70 90.66 95.95 100.69 103.93
Fan Size 06SQ & 07SQ (I-P)
Water
Pressure
Airflow (Cfm)
Rows Gpm Drop (ft) 700 900 1100 1300 1500 1700 1900 2100 2300 2500 2700
1-Row 0.5 0.12 — — — — — — — — — — —
Capacity 1.0 0.40 — — — — — — — — — — —
MBH 2.0 1.37 31.21 34.50 37.47 40.06 42.33 44.37 46.21 47.89 49.43 50.85 52.16
3.0 2.83 33.81 37.76 41.19 44.25 47.10 49.74 52.17 54.40 56.49 58.43 60.24
4.0 4.76 35.27 39.61 43.42 46.86 50.00 52.91 55.63 58.24 60.68 62.97 65.14
5.0 7.13 36.20 40.80 44.87 48.57 51.97 55.12 58.07 60.84 63.46 66.00 68.41
6.0 9.93 36.85 41.64 45.90 49.78 53.36 56.70 59.83 62.79 65.59 68.24 70.77
2-Row 1.0 0.77 — — — — — — — — — — —
Capacity 2.0 2.58 47.79 54.01 58.79 62.56 65.61 68.13 70.25 72.05 73.60 74.95 76.14
MBH 3.0 5.27 52.10 60.08 66.51 71.79 76.21 79.96 83.19 86.00 88.47 90.65 92.61
4.0 8.78 54.37 63.38 70.82 77.06 82.39 86.98 91.00 94.54 97.69 100.51 103.06
5.0 13.07 55.77 65.44 73.55 80.45 86.40 91.60 96.18 100.26 103.91 107.20 110.19
6.0 18.13 56.71 66.85 75.43 82.80 89.22 94.86 99.86 104.34 108.37 112.03 115.36
VAV-PRC008-EN FPS 13

Fan-Powered
Series
Performance
Data—Hot Water
Coil (I-P)
Water Coil Notes (I-P)
1. Fouling Factor = 0.0005.
2. The following equations may be used in calculating Leaving Air Temperature (LAT) and Water Temperature
Difference (WTD).
( ) ( )
LAT = EAT +
MBH x 921.7
WTD = EWT - LWT =
Cfm
2 x MBH
Gpm
3. Capacity based on 70°F entering air temperature and 180°F entering water temperature. Refer to correction factors for
different entering conditions.
Temperature Correction Factors for Water Pressure Drop (ft)
Average Water Temperature 200 190 180 170 160 150 140 130 120 110
Correction Factor 0.970 0.985 1.000 1.020 1.030 1.050 1.080 1.100 1.130 1.150
Temperature Correction Factors for Coil Capacity (MBH)
Entering Water Minus Entering Air 40 50 60 70 80 90 100 110 120 130
Correction Factor 0.355 0.446 0.537 0.629 0.722 0.814 0.907 1.000 1.093 1.187
FPS 14
VAV-PRC008-EN

Fan-Powered
Series
Performance
Data—Hot Water
Coil (SI)
Fan Size 02SQ (SI)
Water
Pressure
Airflow (L/s)
Rows L/s Drop (kPa) 71 94 118 142 165 189 212 236 260 283 330
1-Row 0.03 0.47 — — — — — — — — — — —
Capacity 0.06 1.59 2.68 3.03 3.32 3.58 3.80 4.01 4.20 4.38 4.55 4.70 4.70
kW 0.13 5.52 2.91 3.34 3.70 4.02 4.32 4.59 4.84 5.08 5.30 5.52 5.52
0.19 11.51 3.00 3.46 3.85 4.20 4.52 4.82 5.10 5.37 5.62 5.86 5.86
0.25 19.45 3.05 3.52 3.93 4.30 4.63 4.95 5.25 5.53 5.80 6.06 6.06
0.32 29.27 3.08 3.56 3.98 4.36 4.71 5.03 5.34 5.63 5.91 6.18 6.18
2-Row 0.06 3.00 3.69 4.46 5.10 5.63 6.08 6.46 6.80 7.09 7.35 7.58 7.58
Capacity 0.13 10.21 3.93 4.86 5.67 6.37 6.99 7.54 8.03 8.47 8.87 9.24 9.24
kW 0.19 21.07 4.02 5.01 5.87 6.64 7.33 7.95 8.51 9.02 9.49 9.92 9.92
0.25 35.33 4.06 5.08 5.98 6.78 7.51 8.16 8.76 9.31 9.82 10.29 10.29
0.32 52.84 4.09 5.12 6.04 6.87 7.62 8.30 8.92 9.50 10.03 10.52 10.52
Fan Sizes 03SQ 04SQ(SI)
Water
Pressure
Airflow (L/s)
Rows L/s Drop (kPa) 94 142 189 260 330 401 472 543 613 684 755
1-Row 0.06 0.81 — — — — — — — — — — —
Capacity 0.13 3.02 4.40 5.33 6.04 6.91 7.62 8.23 8.79 9.29 9.75 10.16 10.16
kW 0.19 6.56 4.60 5.64 6.45 7.45 8.29 9.03 9.70 10.30 10.86 11.38 11.38
0.25 11.39 4.71 5.80 6.67 7.75 8.67 9.49 10.23 10.91 11.54 12.13 12.13
0.32 17.49 4.77 5.91 6.81 7.94 8.92 9.79 10.58 11.31 11.99 12.63 12.63
0.38 24.86 4.82 5.98 6.91 8.08 9.09 10.00 10.83 11.60 12.32 12.99 12.99
0.44 33.49 4.85 6.03 6.98 8.18 9.22 10.16 11.02 11.81 12.56 13.27 13.27
0.50 43.36 4.88 6.08 7.04 8.26 9.32 10.28 11.16 11.98 12.75 13.48 13.48
0.57 54.46 4.90 6.11 7.08 8.32 9.40 10.38 11.28 12.12 12.90 13.65 13.65
0.63 66.80 4.92 6.13 7.12 8.37 9.47 10.46 11.37 12.22 13.03 13.79 13.79
2-Row 0.06 1.18 — — — — — — — — — — —
Capacity 0.13 4.22 5.55 7.50 9.07 10.90 12.31 13.42 14.32 15.06 15.68 16.22 16.22
kW 0.19 8.99 5.70 7.83 9.61 11.78 13.52 14.94 16.12 17.13 18.00 18.75 18.75
0.25 15.41 5.78 8.00 9.89 12.25 14.18 15.79 17.16 18.33 19.36 20.26 20.26
0.32 23.45 5.83 8.10 10.06 12.54 14.60 16.33 17.82 19.12 20.25 21.26 21.26
0.38 33.07 5.86 8.17 10.18 12.74 14.88 16.71 18.29 19.67 20.89 21.97 21.97
0.44 44.26 5.88 8.22 10.26 12.88 15.09 16.99 18.63 20.07 21.36 22.50 22.50
0.50 57.00 5.90 8.26 10.33 12.99 15.25 17.20 18.89 20.39 21.72 22.92 22.92
Fan Size 05SQ(SI)
Water
Pressure
Airflow (L/s)
Rows L/s Drop (kPa) 165 236 307 378 472 566 661 755 849 944 1015
1-Row 0.06 0.87 — — — — — — — — — — —
Capacity 0.13 3.22 6.35 7.40 8.23 8.94 9.76 10.49 11.12 11.69 12.19 12.65 12.65
kW 0.19 6.95 6.75 7.95 8.94 9.78 10.77 11.64 12.42 13.16 13.82 14.44 14.44
0.25 12.04 6.96 8.26 9.33 10.27 11.37 12.34 13.23 14.04 14.79 15.51 15.51
0.32 18.46 7.10 8.46 9.59 10.58 11.76 12.81 13.77 14.66 15.48 16.25 16.25
0.38 26.20 7.19 8.60 9.77 10.80 12.03 13.14 14.15 15.09 15.97 16.79 16.79
0.44 35.23 7.26 8.70 9.90 10.97 12.24 13.39 14.44 15.42 16.34 17.21 17.21
0.50 45.57 7.32 8.78 10.01 11.09 12.40 13.58 14.67 15.68 16.63 17.53 17.53
2-Row 0.06 1.16 — — — — — — — — — — —
Capacity 0.13 4.16 8.78 11.05 12.78 14.16 15.58 16.69 17.57 18.30 18.90 19.41 19.41
kW 0.19 8.85 9.20 11.83 13.94 15.68 17.57 19.10 20.35 21.41 22.32 23.10 23.10
0.25 15.17 9.42 12.23 14.56 16.52 18.69 20.48 21.99 23.28 24.40 25.38 25.38
0.32 23.09 9.55 12.48 14.95 17.04 19.41 21.38 23.07 24.52 25.80 26.92 26.92
0.38 32.57 9.63 12.65 15.21 17.40 19.90 22.01 23.83 25.41 26.79 28.03 28.03
0.44 43.60 9.70 12.77 15.39 17.67 20.26 22.48 24.39 26.06 27.54 28.86 28.86
0.50 56.16 9.74 12.86 15.54 17.87 20.54 22.83 24.82 26.57 28.12 29.51 29.51
Fan Sizes 06SQ & 07SQ (SI)
Water
Pressure
Airflow (L/s)
Rows L/s Drop (kPa) 330 425 519 613 708 802 897 991 1085 1180 1274
1-Row 0.03 0.36 — — — — — — — — — — —
Capacity 0.06 1.20 — — — — — — — — — — —
kW 0.13 4.10 9.15 10.11 10.98 11.74 12.41 13.00 13.54 14.03 14.49 14.90 14.90
0.19 8.46 9.91 11.07 12.07 12.97 13.80 14.58 15.29 15.94 16.55 17.12 17.12
0.25 14.22 10.34 11.61 12.73 13.73 14.66 15.51 16.30 17.07 17.78 18.46 18.46
0.32 21.30 10.61 11.96 13.15 14.23 15.23 16.15 17.02 17.83 18.60 19.34 19.34
0.38 29.68 10.80 12.20 13.45 14.59 15.64 16.62 17.54 18.40 19.22 20.00 20.00
2-Row 0.06 2.31 — — — — — — — — — — —
Capacity 0.13 7.71 14.01 15.83 17.23 18.33 19.23 19.97 20.59 21.11 21.57 21.97 21.97
kW 0.19 15.74 15.27 17.61 19.49 21.04 22.33 23.43 24.38 25.20 25.93 26.57 26.57
0.25 26.24 15.94 18.58 20.75 22.58 24.14 25.49 26.67 27.71 28.63 29.46 29.46
0.32 39.08 16.34 19.18 21.55 23.58 25.32 26.85 28.19 29.38 30.45 31.42 31.42
0.38 54.19 16.62 19.59 22.11 24.27 26.15 27.80 29.27 30.58 31.76 32.83 32.83
VAV-PRC008-EN FPS 15

Fan-Powered
Series
Performance
Data—Hot Water
Coil (SI)
Water Coil Notes (SI)
1. Fouling Factor = 0.0005.
2. The following equations may be used in calculating Leaving Air Temperature (LAT) and Water Temperature
Difference (WTD).
LAT = EAT kW x 0.83
+( L/s )
WTD = EWT - LWT =( (4.19)L/s
kW
)
3. Capacity based on 21°C entering air temperature and 82°Centering water temperature. Refer to correction factors for
different entering conditions.
Temperature Correction Factors for Water Pressure Drop (kPa)
Average Water Temperature 93 88 82 77 71 66 60 54 49 43
Correction Factor 0.970 0.985 1.000 1.020 1.030 1.050 1.080 1.100 1.130 1.150
Temperature Correction Factors for Coil Capacity (kW)
Entering Water Minus Entering Air 22 27 33 38 44 50 55 61 67 72
Correction Factor 0.355 0.446 0.537 0.629 0.722 0.814 0.907 1.000 1.093 1.187
FPS 16
VAV-PRC008-EN

Fan-Powered
Series
Performance
Data—
Electrical Data
VSEF—Electric Coil kW Guidelines – Minimum to Maximum (PSC Motor Units)
Fan Single-Phase Voltage Three-Phase Voltage
Size Stages 120V 208V 240V 277V 347V 480V 208V 480V 600V
02SQ 1 0.5–5.0 0.5–7.0 0.5–7.0 0.5–7.0 0.5–7.0 1.0–7.0 0.5–7.0 1.0–7.0 1.5–7.0
2 0.5–5.0 0.5–7.0 0.5–7.0 1.0–7.0 1.0–7.0 1.5–7.0 1.0–7.0 3.5–7.0 —
3* 1.0–5.0 1.0–7.0 1.0–7.0 1.0–7.0 1.5–7.0 2.0–7.0 1.5–7.0 5.5–6.0 —
03SQ 1 0.5–5.0 0.5–9.0 0.5–10.0 0.5–12.0 0.5–14.0 1.0–13.0 0.5–14.0 1.0–14.0 1.5–14.0
2 0.5–5.0 0.5–9.0 0.5–10.0 1.0–12.0 1.0–14.0 1.5–13.0 1.0–14.0 3.5–14.0 —
3* 1.0–5.0 1.0–9.0 1.0–10.0 1.0–12.0 1.5–14.0 2.0–12.0 1.5–14.0 5.5–9.0 —
04SQ 1 0.5–4.5 0.5–8.0 0.5–10.0 0.5–12.0 0.5–16.0 0.5–18.0 0.5–15.0 1.0–18.0 1.5–18.0
2 0.5–4.5 0.5–8.0 0.5–10.0 1.0–12.0 1.0–16.0 1.0–18.0 1.0–15.0 2.5–18.0 4.0–17.0
3* 1.0–4.5 1.0–8.0 1.0–10.0 1.0–12.0 1.5–16.0 1.5–18.0 1.5–15.0 4.0–18.0 6.0–16.0
05SQ 1 0.5–4.5 0.5–8.0 0.5–9.0 0.5–12.0 0.5–15.0 0.5–20.0 0.5–14.0 1.0–22.0 1.5–22.0
2 0.5–4.5 0.5–8.0 0.5–9.0 1.0–12.0 1.0–15.0 1.0–20.0 1.0–14.0 2.5–20.0 4.0–20.0
3* 1.0–4.5 1.0–8.0 1.0–9.0 1.0–12.0 1.5–15.0 1.5–20.0 1.5–14.0 4.0–18.0 6.0–16.0
06SQ 1 — 0.5–9.0 — 0.5–12.0 0.5–15.0 0.5–22.0 0.5–15.0 1.0–22.0 1.5–22.0
2 — 0.5–9.0 — 1.0–12.0 1.0–15.0 1.0–22.0 1.0–15.0 2.0–22.0 3.0–22.0
3* — 1.0–9.0 — 1.0–12.0 1.5–15.0 1.5–20.0 1.5–15.0 3.0–20.0 4.5–18.0
07SQ 1 — 0.5–8.0 — 0.5–11.0 0.5–15.0 0.5–24.0 0.5–14.0 1.0–24.0 1.5–24.0
2 — 0.5–8.0 — 1.0–11.0 1.0–15.0 1.0–24.0 1.0–14.0 2.0–24.0 3.0–24.0
3* — 1.0–8.0 — 1.0–11.0 1.5–15.0 1.5–20.0 1.5–14.0 3.0–20.0 4.5–18.0
*Three stages of electric heat available only with pneumatic controls.
VSEF—Electric Coil kW Guidelines – Minimum to Maximum (ECM Units)
Fan Single-Phase Voltage Three-Phase Voltage
Size Stages 120V 208V 240V 277V 347V 480V 208V 480V 600V
03SQ 1 0.5–4.5 0.5–8.0 0.5–10.0 0.5–12.0 — 1.0–13.0 0.5–14.0 1.0–14.0 —
2 0.5–4.5 0.5–8.0 0.5–10.0 1.0–12.0 — 1.5–13.0 1.0–14.0 3.5–14.0 —
3 1.0–4.5 1.0–8.0 1.0–10.0 1.0–12.0 — 2.0–12.0 1.5–14.0 5.5–9.0 —
04SQ 1 0.5–4.5 0.5–8.0 0.5–9.0 0.5–12.0 — 0.5–18.0 0.5–14.0 1.0–18.0 —
2 0.5–4.5 0.5–8.0 0.5–9.0 1.0–12.0 — 1.0–18.0 1.0–14.0 2.5–18.0 —
3 1.0–4.5 1.0–8.0 1.0–9.0 1.0–12.0 — 1.5–18.0 1.5–14.0 4.0–18.0 —
05SQ 1 0.5–4.0 0.5–7.0 0.5–8.0 0.5–11.0 — 0.5–18.0 0.5–12.0 1.0–22.0 —
2 0.5–4.0 0.5–7.0 0.5–8.0 1.0–11.0 — 1.0–18.0 1.0–12.0 2.5–20.0 —
3 1.0–4.0 1.0–7.0 1.0–8.0 1.0–11.0 — 1.5–18.0 1.5–12.0 4.0–18.0 —
06SQ 1 0.5–4.0 0.5–7.0 0.5–8.0 0.5–11.0 — 0.5–22.0 0.5–12.0 1.0–22.0 —
2 0.5–4.0 0.5–7.0 0.5–8.0 1.0–11.0 — 1.0–22.0 1.0–12.0 2.0–22.0 —
3 1.0–4.0 1.0–7.0 1.0–8.0 1.0–11.0 — 1.5–20.0 1.5–12.0 3.0–20.0 —
Notes:
1. Coils available with electric, 24-VAC magnetic or contactors, load carrying P.E. switches, and P.E. switches with magnetic or mercury contactors.
2. Available kW increments are by 0.5 from 0.5 kW to 8.0 kW, by 1.0 kW from 9.0 to 17.0 kW, and by 2.0 kW from 18.0 to 24.0 kW.
3. Each stage will be equal in kW output.
4. All heaters contain an auto reset thermal cutout and a manual reset cutout.
5. The current amp draw for the heater elements is calculated by the formula below.
6. Recommended coil temperature rise = 20°–30°F (-7°–-1°C). Maximum temperature rise = 55°F (12°C).
7. Heaters should not operate at cfms below the namplate minimum.
8. Only two stages of electric reheat available with Trane controls (ECM only).
Fan Electrical Performance (PSC)
Maximum Fan Motor Amperage (FLA)
Fan Size HP 115 VAC 208 VAC 277 VAC
02SQ 1/8 1.6 — 0.7
03SQ 1/3 4.3 — 1.6
04SQ 1/3 5.5 — 2.0
05SQ 1/2 6.7 — 2.4
06SQ 1/2 — 4.6 3.8
07SQ 1 — 6.6 4.7
Notes:
1. Electric Heat Units—Units with fan sizes 02SQ to
05SQ and a primary voltage of 208/60/1, 208/60/3 or
0/60/1 use 115/60/1 VAC fan motors. Fan sizes 06SQ
and 07SQ in these same voltages, have 208/60/1 VAC
fan motors.
2. Electric Heat Units—Units with primary voltage of
277/60/1, 480/60/1 or 480/60/3 use 277 VAC fan
motors.
3. Electric Heat Units—Units with primary voltage of
347/60/1 or 575/60/3 use 347 VAC fan motors.
4. With 380/50/3 and 230/50/1 use 230/50 motors.
Fan Electrical Performance (ECM)
Maximum Fan Motor Amperage (FLA)
Fan Size HP 120 VAC 277 VAC
03SQ 1/3 4.5 2.4
04SQ ½ 6.5 3.5
05SQ 1 10.1 5.4
06SQ 1 9.5 5.1
Notes:
1. Acceptable selections are any point
within the shaded area. The ECM will
operate on a vertical performance line
using the solid state speed controller
provided.
2. The ECM motor provides constant
volume with changing static pressure
conditions. Therefore, the fan curves
for the ECM are different compared to
fan curves with PSC motors.
3. By using an ECM motor, less fan sizes
are used because of the wider turndown
ratios.
VAV-PRC008-EN FPS 17

Fan-Powered
Series
Performance
Data—
Electrical Data
Formulas
Minimum Circuit Ampacity (MCA) Equation
• MCA = 1.25 x (Σmotor amps + heater amps)
Here motor amps is the sum of all motor current draws if more
than one is used in the unit.
Maximum Overcurrent Protection (MOP) Equation
• MOP = (2.25 x motor 1amps) + motor2 amps + heater amps
motor1 amps = current draw of largest motor
motor2 amps = sum of current draw of all other motors used in units
General Sizing Rules:
• If MOP = 15, then fuse size = 15
• If MOP = 19, then fuse size = 15 with one exception. If heater
amps x 1.25 > 15, then fuse size = 20.
• If MOP ≤ MCA, then choose next fuse size greater than MCA.
• Control fusing not applicable.
• Standard Fuse Sizes: 15, 20, 25, 30, 35, 40, 45, 50, and 60.
Example:
A model VSEF, electric reheat unit size 10-0517 has 480/3 phase, 12 kW
electric reheat with 2 stages and 277-Volt motor.
For MOP of fan-powered unit:
12 kW - 480/3 heater 12 x 1000 = 14.45 amps
480 x 1.73
MCA = (2.4 + 14.45) x 1.25 = 21.06, MOP = (2.25 x 2.4) + 14.45 = 19.9.
Since MOP ≤ MCA, then MOP = 25.
For total current draw of unit:
12 kW—480/3 heater 12 x 1000 = 14.45
480 x 1.73
Two heat outputs (2 stages) @0.5 amps max each = 1.00
Motor amps: 277 V (Fan size 0517) = 2.4
18.35 amps max
Useful formulas:
Cfm x ATD
kW =
3145
kW = 1214 x L/s x ATD
kW x 1000
3φamps =
Primary Voltage x √ 3
1φamps =
kW x 1000
Primary Voltage
ATD =
kW x 3145
Cfm
ATD =
kW
1214 x L/s
Minimum Unit Electric
Heat Cfm Guidelines (PSC)
Unit
Cfm
kW 02SQ 03SQ 04SQ 05SQ 06SQ 07SQ
0.5 191 260 315 400 700 850
1 191 260 315 400 700 850
1.5 191 260 315 400 700 850
2 191 260 315 400 700 850
2.5 191 260 315 400 700 850
3 214 260 315 400 700 850
3.5 236 260 315 400 700 850
4 259 260 315 400 700 850
4.5 282 260 315 400 700 850
5 304 290 315 400 700 850
5.5 327 315 315 400 700 850
6 350 350 350 400 700 850
6.5 372 375 375 400 700 850
7 395 400 400 400 700 850
7.5 — 430 430 430 700 850
8 — 460 460 460 700 850
9 — 515 515 515 700 850
10 — 575 575 575 700 850
11 — 630 630 630 713 850
12 — 690 690 690 792 902
13 — 745 745 745 872 954
14 — 810 810 810 951 1006
15 — — 860 860 1031 1057
16 — — 920 920 1110 1109
17 — — 973 973 1190 1161
18 — — 1030 1030 1269 1213
20 — — — 1150 1428 1317
22 — — — 1260 1587 1420
24 — — — — — 1524
Minimum Unit Electric
Heat L/s Guidelines (PSC)
Unit
L/s
kW 02SQ 03SQ 04SQ 05SQ 06SQ 07SQ
0.5 90 123 149 189 330 401
1 90 123 149 189 330 401
1.5 90 123 149 189 330 401
2 90 123 149 189 330 401
2.5 90 123 149 189 330 401
3 101 123 149 189 330 401
3.5 112 123 149 189 330 401
4 122 123 149 189 330 401
4.5 133 123 149 189 330 401
5 144 137 149 189 330 401
5.5 154 149 149 189 330 401
6 165 165 165 189 330 401
6.5 176 177 177 189 330 401
7 186 189 189 189 330 401
7.5 — 203 203 203 330 401
8 — 217 217 217 330 401
9 — 243 243 243 330 401
10 — 271 271 271 330 401
11 — 297 297 297 336 401
12 — 326 326 326 374 426
13 — 352 352 352 411 450
14 — 382 382 382 449 475
15 — — 406 406 486 499
16 — — 434 434 524 524
17 — — 459 459 562 548
18 — — 486 486 599 572
20 — — — 543 674 621
22 — — — 595 749 670
24 — — — — — 719
FPS 18
VAV-PRC008-EN

Fan-Powered
Series
Minimum Unit Electric
Heat Cfm Guidelines (ECM)
Unit
Cfm
kW 03SQ 04SQ 05SQ 06SQ
0.5 260 315 400 943
1 260 315 400 943
1.5 260 315 400 943
2 260 315 400 943
2.5 260 315 400 943
3 260 315 400 943
3.5 260 315 400 943
4 260 315 400 943
4.5 260 315 400 943
5 290 315 400 943
5.5 315 315 400 943
6 350 350 400 943
6.5 375 375 400 943
7 400 400 400 943
7.5 430 430 430 943
8 460 460 460 943
9 515 515 515 943
10 575 575 575 975
11 630 630 630 1006
12 690 690 690 1038
13 745 745 745 1069
14 810 810 810 1101
15 — 860 860 1133
16 — 920 920 1164
17 — 973 973 1196
18 — 1030 1030 1228
20 — — 1150 1291
22 — — 1260 1354
Performance
Data—
Electrical Data
Minimum Unit Electric
Heat L/s Guidelines (ECM)
Unit
L/s
kW 03SQ 04SQ 05SQ 06SQ
0.5 123 149 189 445
1 123 149 189 445
1.5 123 149 189 445
2 123 149 189 445
2.5 123 149 189 445
3 123 149 189 445
3.5 123 149 189 445
4 123 149 189 445
4.5 123 149 189 445
5 137 149 189 445
5.5 149 149 189 445
6 165 165 189 445
6.5 177 177 189 445
7 189 189 189 445
7.5 203 203 203 445
8 217 217 217 445
9 243 243 243 445
10 271 271 271 460
11 297 297 297 475
12 326 326 326 490
13 352 352 352 505
14 382 382 382 520
15 — 406 406 535
16 — 434 434 549
17 — 459 459 564
18 — 486 486 579
20 — — 543 609
22 — — 595 639
VAV-PRC008-EN FPS 19

Fan-Powered
Series
Performance
Data—
Acoustics
Discharge Sound Power (dB)
Fan and 100% Primary
Discharge Sound Power (dB)
Fan Inlet 0.5" ∆Ps 1.0" ∆Ps 2.0" ∆Ps 3.0" ∆Ps
Size Size Cfm L/s 2 3 4 5 6 7 2 3 4 5 6 7 2 3 4 5 6 7 2 3 4 5 6 7
02SQ 10 200 94 65 53 53 52 49 45 66 59 55 54 52 51 68 68 65 62 59 55 68 62 62 61 59 59
300 142 65 54 54 52 49 46 66 59 56 54 52 52 68 67 64 61 58 56 69 65 65 63 60 60
500 236 65 55 55 52 49 47 66 59 57 54 52 53 68 66 63 60 57 59 70 72 72 67 63 63
600 283 66 58 58 55 52 50 68 61 59 56 54 55 69 65 63 60 58 59 70 70 68 64 61 62
700 330 67 60 60 57 55 53 69 62 60 58 56 56 69 64 62 59 58 58 70 67 63 61 59 60
03SQ 10 250 118 53 48 47 43 38 34 53 49 48 43 39 34 54 51 48 44 40 36 55 52 48 45 41 39
480 227 57 52 52 49 45 43 58 54 53 49 46 43 59 56 53 49 46 44 60 58 53 50 47 45
720 340 62 57 58 55 53 52 64 59 59 56 54 52 64 62 58 55 53 52 66 64 59 55 53 52
960 453 67 62 63 61 59 59 68 63 63 62 59 59 70 66 64 62 60 60 70 67 64 62 60 59
1200 566 72 66 67 66 64 65 73 67 67 66 64 64 75 70 68 67 65 65 75 71 68 68 65 65
04SQ 12 330 156 54 51 49 45 39 34 55 52 49 45 40 35 58 56 50 46 40 38 59 58 51 46 42 40
620 293 58 54 54 51 46 43 59 56 54 51 47 44 63 61 55 52 47 46 64 63 55 52 48 47
930 439 62 58 59 57 54 53 64 60 59 57 55 53 68 66 60 58 55 54 69 68 60 58 55 54
1250 590 68 63 64 63 60 60 70 65 65 64 61 61 72 68 65 65 62 62 74 71 66 65 63 62
1550 732 73 68 68 68 66 66 73 69 68 69 66 66 76 71 69 70 67 67 77 74 70 70 68 67
05SQ 12 400 189 53 51 52 46 40 38 54 52 52 47 41 39 56 53 52 47 42 40 57 55 53 48 43 41
760 359 58 57 58 54 49 48 59 57 57 54 49 48 62 59 57 53 49 48 63 61 58 54 50 48
1140 538 64 63 64 62 59 58 64 62 63 61 58 57 68 65 63 60 57 56 70 68 64 61 58 56
1500 708 70 68 69 68 65 64 70 68 69 67 65 64 72 69 69 68 65 64 74 71 69 68 65 64
1900 897 74 73 73 74 71 71 75 73 73 74 71 70 76 73 73 73 70 70 76 74 73 73 70 70
06SQ 16 700 330 54 52 53 49 46 41 67 58 55 52 51 50 72 70 65 62 56 56 75 70 69 65 60 58
1200 566 60 58 58 55 52 48 69 62 60 57 55 54 74 71 67 64 60 60 77 74 71 67 64 62
1600 755 66 62 62 59 56 54 71 66 64 61 59 58 76 73 69 66 62 62 79 76 73 69 66 64
2100 991 72 68 67 65 62 61 74 70 69 66 63 62 78 75 72 69 66 66 81 79 75 72 70 68
2500 1180 74 71 69 67 65 64 76 73 71 69 66 65 80 77 74 71 69 68 83 81 77 74 72 70
07SQ 16 850 401 59 57 51 53 47 51 63 59 53 54 47 52 66 62 56 56 52 58 72 68 62 59 54 63
1400 661 62 60 59 56 52 53 66 62 61 57 55 57 71 67 64 59 57 61 74 71 67 62 59 63
1900 897 66 65 65 61 58 57 70 66 66 61 59 60 74 70 68 63 61 63 77 74 70 65 63 64
2500 1180 71 70 71 67 65 63 73 71 71 67 65 65 76 73 73 67 66 67 80 76 73 69 67 67
3000 1416 74 74 75 71 69 68 76 74 75 71 69 69 78 76 76 71 70 70 82 78 76 72 70 70
1. All data are measured in accordance with Industry Standard ARI 880-98.
2. All sound power levels, dB re: 10 -12 Watts.
3. Where ∆Ps is inlet static pressure minus discharge static pressure.
FPS 20
VAV-PRC008-EN

Fan-Powered
Series
Performance
Data—
Acoustics
Radiated Sound Power (dB)
Fan and 100% Primary
Radiated Sound Power (dB)
Fan Inlet 0.5" ∆Ps 1.0" ∆Ps 2.0" ∆Ps 3.0" ∆Ps
Size Size Cfm L/s 2 3 4 5 6 7 2 3 4 5 6 7 2 3 4 5 6 7 2 3 4 5 6 7
02SQ 10 200 94 65 53 53 52 49 45 66 59 55 54 52 51 68 68 65 62 59 55 68 62 62 61 59 59
300 142 65 54 54 52 49 46 66 59 56 54 52 52 68 67 64 61 58 56 69 65 65 63 60 60
500 236 65 55 55 52 49 47 66 59 57 54 52 53 68 66 63 60 57 59 70 72 72 67 63 63
600 283 66 58 58 54 52 50 68 60 58 56 54 54 69 66 63 60 58 60 71 72 70 66 62 63
700 330 67 60 60 57 55 53 69 62 60 58 56 56 70 67 63 61 59 60 72 71 68 66 62 63
03SQ 10 250 118 53 49 47 44 40 35 56 51 49 47 44 42 58 54 53 52 49 48 59 56 56 55 52 52
480 227 58 54 52 49 45 42 61 56 53 51 48 48 63 59 57 55 52 53 65 62 60 58 55 56
720 340 63 59 57 54 51 50 66 61 58 55 53 54 69 65 61 58 56 59 71 68 64 61 58 61
960 453 68 63 61 59 57 57 71 65 63 60 58 59 73 69 65 62 59 62 74 71 68 64 61 63
1200 566 72 67 65 63 61 62 75 69 66 64 62 63 77 72 68 66 63 65 78 74 70 67 64 66
04SQ 12 330 156 56 51 49 44 41 37 58 54 52 47 46 47 62 58 56 53 51 53 64 60 59 57 54 56
620 293 60 55 54 49 46 44 62 58 55 51 50 51 67 63 60 56 54 57 69 65 63 60 57 60
930 439 64 60 59 54 52 51 67 62 59 55 54 56 73 68 64 59 58 62 74 71 67 63 60 65
1250 590 69 65 63 59 58 57 72 66 64 60 59 60 76 71 66 62 61 65 78 74 69 65 63 67
1550 732 74 69 67 65 63 63 76 71 68 65 64 64 79 73 69 66 65 67 80 76 72 68 66 68
05SQ 12 400 189 57 54 50 45 44 40 60 56 53 49 50 50 63 60 57 53 52 55 65 62 60 57 54 57
760 359 61 58 55 51 50 47 64 60 57 53 54 54 68 64 60 56 55 59 70 67 64 60 57 61
1140 538 65 63 60 57 56 54 68 65 61 58 58 58 73 69 64 60 59 63 75 73 68 63 61 65
1500 708 69 67 65 63 62 60 72 69 65 63 62 62 76 72 68 64 63 65 78 75 70 66 65 67
1900 897 74 72 69 68 67 66 76 73 70 69 67 67 79 75 71 68 67 68 81 77 72 69 68 69
06SQ 16 700 330 54 52 53 49 46 41 67 58 55 52 51 50 72 70 65 62 56 56 75 70 69 65 60 58
1200 566 60 58 58 55 52 48 69 62 60 57 55 54 74 71 67 64 60 60 77 74 71 67 64 62
1600 755 66 62 62 59 56 54 71 66 64 61 59 58 76 73 69 66 62 62 79 76 73 69 66 64
2100 991 72 68 67 65 62 61 74 70 68 66 63 62 78 74 72 69 66 66 81 79 75 72 70 68
2500 1180 74 71 69 67 65 64 76 73 70 69 66 65 80 76 74 71 69 68 83 81 77 74 72 70
07SQ 16 850 401 59 57 51 53 47 51 63 59 53 54 47 52 66 62 56 56 52 58 72 68 62 59 54 63
1400 661 62 60 59 56 52 53 66 62 61 57 55 57 71 67 64 59 57 61 74 71 67 62 59 63
1900 897 66 65 65 61 58 57 70 66 66 61 59 60 74 70 68 63 61 63 77 74 70 65 63 64
2500 1180 71 70 71 67 65 63 73 71 71 67 65 65 76 73 73 67 66 67 80 76 73 69 67 67
3000 1416 74 74 75 71 69 68 76 74 75 71 69 69 78 76 76 71 70 70 82 78 76 72 70 70
1. All data are measured in accordance with Industry Standard ARI 880-98.
2. All sound power levels, dB re: 10 -12 Watts.
3. Where ∆Ps is inlet static pressure minus discharge static pressure.
VAV-PRC008-EN FPS 21

Fan-Powered
Series
Performance
Data—
Acoustics
Fan Only Sound Power (dB)
Outlet Discharge Sound Power (dB) Radiated Sound Power (dB)
Fan Static Octave Bands Octave Bands
Size (in. wg) Cfm L/s 2 3 4 5 6 7 2 3 4 5 6 7
02SQ 200 94 58 51 51 46 41 33 56 49 47 43 36 28
0.25 300 142 59 50 50 47 42 34 57 48 48 44 39 32
(63 Pa) 500 236 64 56 55 54 50 47 61 56 54 50 47 43
600 283 67 59 58 57 53 52 64 59 57 53 50 48
700 330 70 62 60 60 56 55 66 62 60 56 53 51
03SQ 250 118 53 49 48 45 40 34 52 49 47 43 37 28
0.25 480 227 56 51 54 49 45 41 55 52 51 47 42 39
(63 Pa) 720 340 60 55 58 54 52 51 60 57 56 53 50 49
960 453 67 61 63 61 59 58 67 63 61 59 56 56
1200 566 72 66 67 67 64 64 73 67 65 63 61 62
04SQ 330 156 54 50 48 45 40 34 56 51 48 42 37 30
0.25 620 293 57 53 53 51 47 44 59 54 53 47 44 40
(63 Pa) 930 439 62 58 59 58 54 53 63 58 58 53 51 49
1250 590 70 65 65 65 62 61 69 64 63 59 58 56
1550 732 74 70 68 69 66 66 75 69 66 64 63 62
05SQ 400 189 55 53 52 48 42 39 54 52 51 44 40 33
0.25 760 359 59 56 56 54 50 48 58 56 53 49 47 43
(63 Pa) 1140 538 65 62 64 62 59 58 63 62 60 57 55 52
1500 708 70 68 69 68 65 65 69 67 64 62 60 59
1900 897 75 72 73 73 70 70 73 71 68 67 66 65
06SQ 700 330 54 55 52 50 44 39 58 55 52 47 41 34
0.25 1200 566 56 57 57 55 51 49 60 58 58 51 47 44
(63 Pa) 1600 755 61 61 62 61 57 56 63 62 62 57 53 51
2100 991 66 66 67 67 64 64 68 67 66 62 60 59
2500 1180 70 70 71 71 69 69 72 71 69 66 64 63
07SQ 850 401 54 60 53 50 45 41 55 56 52 48 41 36
0.25 1400 661 60 66 59 56 54 54 59 62 58 54 50 48
(63 Pa) 1900 897 65 68 65 62 60 61 63 64 64 60 56 55
2500 1180 70 73 72 69 67 68 69 69 70 66 64 62
3000 1416 73 75 76 73 71 72 71 72 72 70 68 67
FPS 22
VAV-PRC008-EN

Fan-Powered
Series
Performance
Data—
Acoustics
Sound Noise Criteria (NC)
Fan and 100% Primary
Discharge
Radiated
NC Level (∆Ps)
NC Level (∆Ps)
Fan Inlet Fan 0.5" 1.0" 2.0" 3.0" Fan 0.5" 1.0" 2.0" 3.0"
Size Size Cfm L/s Only (127 Pa) (254 Pa) (508 Pa) (762 Pa) Only (127 Pa) (254 Pa) (508 Pa) (762 Pa)
02SQ 10 200 94 — 17 19 27 23 21/19 29/25 30/26 40/36 37/29
10 300 142 — 17 19 26 24 22/20 29/25 31/26 39/35 40/32
10 500 236 16 17 19 25 32 29/25 30/25 32/26 38/34 48/40
10 600 283 20 19 21 24 30 32/29 33/26 33/29 38/34 46/40
10 700 330 24 20 22 22 26 35/ * 35/ * 35/ * 38/ * 44/ *
03SQ 10 250 118 — — — — — 21/— 21/— 23/16 27/19 31/21
10 480 227 — — — — — 25/17 26/19 27/22 32/25 35/29
10 720 340 15 16 16 19 21 31/24 32/25 33/29 36/32 39/36
10 960 453 22 23 23 24 25 36/32 36/31 38/35 40/37 44/39
10 1250 590 27 28 27 29 30 40/ * 40/ * 41/ * 44/ * 46/ *
04SQ 12 330 156 — — — — — 22/19 23/16 26/19 31/24 34/26
12 620 293 — — — 17 20 27/22 29/21 30/24 35/30 38/32
12 930 439 17 17 17 24 26 33/27 34/26 34/30 39/37 42/39
12 1250 590 25 24 25 26 30 38/35 38/32 39/36 42/41 46/44
12 1550 732 29 29 29 30 34 41/ * 42/ * 44/ * 46/ * 49/ *
05SQ 12 400 189 — — — — — 25/17 24/19 27/21 32/26 35/29
12 760 359 — — — 15 17 27/22 30/24 32/26 35/31 39/35
12 1140 538 22 22 21 22 26 35/30 35/30 36/32 40/37 45/41
12 1500 708 28 27 27 27 30 39/36 40/35 40/37 44/41 47/44
12 1900 897 33 34 33 33 34 44/ * 45/ * 46/ * 47/ * 50/ *
06SQ 16 700 330 — — 17 29 29 26/24 27/19 31/ * 41/39 45/42
16 1200 566 — — 20 30 34 33/26 33/24 35/ * 42/41 47/45
16 1600 755 20 19 24 32 36 37/31 37/31 39/37 45/44 49/47
16 2100 991 27 26 29 35 39 41/37 42/39 44/41 48/46 52/50
16 2500 1180 32 30 32 37 41 45/ * 45/ * 46/ * 50/ * 55/ *
07SQ 16 850 401 16 15 16 22 27 26/24 26/22 29/27 32/31 39/ *
16 1400 661 24 17 21 25 30 33/31 34/26 36/31 39/37 42/41
16 1900 897 26 22 24 29 34 39/34 40/32 41/36 44/41 46/45
16 2250 1062 30 26 27 31 36 44/37 44/36 45/36 47/39 48/42
16 2500 1180 32 29 30 32 36 46/ * 47/ * 47/ * 49/ * 49/ *
*Not Applicable
1. "—” represents NC levels below NC 15.
2. NC Values are calculated using modeling assumptions based on ARI 885-98-02 Addendum.
3. Where ∆Ps is inlet static pressure minus discharge static pressure.
ARI 885-98 DISCHARGE TRANSFER FUNCTION ASSUMPTIONS:
Octave Band
2 3 4 5 6 7
Small Box (700 Cfm) -29 -30 -41 -51 -52 -39
Note: Subtract from terminal unit sound power to determine discharge
sound pressure in the space.
ARI 885-98 RADIATED TRANSFER FUNCTION ASSUMPTIONS:
Octave Band
2 3 4 5 6 7
Type 2- Mineral Fiber Insulation -18 -19 -20 -26 -31 -36
Total dB reduction -18 -19 -20 -26 -31 -36
Note: Subtract from terminal unit sound power to determine radiated
sound pressure in the space.
VAV-PRC008-EN FPS 23

Fan-Powered
Series
Performance
Data—
Acoustics
Radiated Sound Power (dB)
Fan and 100% Primary
ARI Conditions
Fan Inlet Fan Fan Prim. Prim. 1.5" Inlet Pressure (381 Pa)
Size Size Cfm L/s Cfm L/s 2 3 4 5 6 7
02SQ 4 690 326 150 71 67 62 60 57 54 53
5 250 118 67 63 60 58 55 54
6 400 189 73 67 63 60 57 59
8 690 326 70 67 64 60 59 59
10 690 326 69 64 61 59 57 58
03SQ 6 1100 519 400 189 72 67 65 62 60 60
8 700 330 73 68 64 63 60 63
10 1100 519 74 69 66 63 61 63
12 1100 519 74 68 65 62 60 62
04SQ 6 1500 708 400 189 74 70 67 64 63 63
8 700 330 74 71 68 66 64 64
10 1100 519 75 71 68 65 64 66
12 1500 708 77 71 68 65 64 65
14 1500 708 74 70 67 65 63 65
05SQ 10 1900 897 1100 519 75 72 69 68 67 67
12 1600 755 76 73 70 68 67 67
14 1900 897 75 72 69 68 66 67
06SQ 10 2500 1180 1100 519 76 70 69 66 64 65
12 1600 755 78 75 72 68 66 66
14 2100 991 78 75 72 69 67 67
16 2500 1180 78 75 72 70 68 67
07SQ 10 2800 1321 1100 519 77 73 73 69 67 68
12 1600 755 77 73 74 71 68 67
14 2100 991 77 74 74 70 68 67
16 2800 1321 76 74 74 69 68 68
Note: Oversizing primary valves to achieve lower sound levels will increase the
minimum operable cfm. This will increase energy consumption at minimum airflows
when local reheat is energized. See "Valve/Controller Airflow Guidelines".
Discharge Sound Power (dB)
Fan Only
ARI Conditions
Fan Inlet 1.5" Inlet Pressure (381 Pa)
Size Size Cfm L/s 2 3 4 5 6 7
02SQ 5, 6, 8, 10 690 326 70 62 60 59 56 55
03SQ 8, 10 1100 519 70 64 65 64 62 62
04SQ 8, 10, 12 1500 708 73 69 68 68 65 65
05SQ 10, 12 1900 897 75 72 73 73 70 70
06SQ 10, 12, 14, 16 2500 1180 70 70 71 71 69 69
07SQ 10, 12, 14, 16 2800 1321 72 74 74 72 69 70
Radiated Sound Power (dB)
Fan Only
ARI Conditions
Fan Inlet 1.5" Inlet Pressure (381 Pa)
Size Size Cfm L/s 2 3 4 5 6 7
02SQ 5,6, 8, 10 690 326 66 61 59 56 53 51
03SQ 8, 10 1100 519 70 65 64 61 59 60
04SQ 8, 10, 12 1500 708 74 68 66 63 62 61
05SQ 10, 12 1900 897 73 71 68 67 66 65
06SQ 10, 12, 14, 16 2500 1180 72 71 69 66 64 63
07SQ 10, 12, 14, 16 2800 1321 70 71 71 68 66 65
Notes:
1. All sound data rated in accordance with current Industry Standard
ARI 880, version 1998.
2. All sound power levels, dB re: 10 -12 watts.
FPS 24
VAV-PRC008-EN

Fan-Powered
Series
Performance
Data—
Acoustics
Series Inlet Attenuator Appurtenance Effects
Discharge Sound Effect* (dB) Radiated Sound Effect* dB)
Fan 2 3 4 5 6 7 2 3 4 5 6 7
Matte-faced and foil-faced insulation, solid double-wall**
02SQ 2 2 2 3 3 2 -3 -3 -9 -10 -12 -17
03SQ, 04SQ, 05SQ 2 2 2 3 3 2 -1 -3 -10 -14 -17 -20
06SQ, 07SQ 2 2 2 3 3 2 1 -3 -8 -9 -8 -10
Closed-cell insulation
02SQ 2 2 2 3 3 2 1 -2 -5 -4 -6 -6
03SQ, 04SQ, 05SQ 2 2 2 3 3 2 1 -2 -5 -4 -6 -6
06SQ, 07SQ 2 2 2 3 3 2 1 -2 -5 -4 -6 -6
* Add to sound power, a negative effect represents a sound reduction, a positive effect
represents a sound increase.
** Note – Attenuators on double-wall units contain foil-faced insulation.
Series Cabinet Lining Appurtenance Effects
Discharge Sound Effect* (dB) Radiated Sound Effect* (dB)
Fan 2 3 4 5 6 7 2 3 4 5 6 7
Solid double-wall
02SQ 0 0 0 0 0 0 0 0 0 2 3 3
03SQ, 04SQ, 05SQ 0 0 0 0 0 0 0 0 1 2 3 4
06SQ, 07SQ 0 0 0 0 0 0 1 3 2 5 8 8
Closed-cell insulation
02SQ 0 0 0 0 0 0 -1 -1 0 1 1 2
03SQ, 04SQ, 05SQ 0 0 0 0 0 0 1 1 2 2 2 2
06SQ, 07SQ 0 0 0 0 0 0 1 5 3 4 6 6
* Add to sound power, a negative effect represents a sound reduction, a positive effect
represents a sound increase.
Series Heating Coil Appurtenance Effects
Discharge Sound Effect* (dB) Radiated Sound Effect* (dB)**
Fan 2 3 4 5 6 7 2 3 4 5 6 7
Hot Water Coil
02SQ 1 2 2 1 2 2 2 2 2 2 2 2
03SQ, 04SQ, 05SQ 1 3 1 2 2 1 0 2 1 2 2 2
06SQ, 07SQ 2 6 4 4 4 3 6 5 2 2 2 3
Electric Heat
02SQ -4 -1 0 0 1 0 -1 0 -1 0 0 0
03SQ, 04SQ, 05SQ 2 1 2 1 -1 -1 0 1 1 1 1 1
06SQ, 07SQ 4 4 2 2 3 1 2 3 3 4 3 2
* Add to sound power, a negative effect represents a sound reduction, a positive effect
represents a sound increase.
** Radiated effect applies to “fan only” sound only. Do not apply to fan + valve sound.
VAV-PRC008-EN FPS 25

Fan-Powered
Series
Dimensional
Data
SERIES COOLING ONLY (VSCF) WITHOUT ATTENUATOR
FAN
SIZE
02SQ
03SQ
05SQ
07SQ
INLET SIZE
NOMINAL Ø
INCHES
6, 8, 10, 12
10, 12, 14
10, 12, 14, 16
INLET SIZE
AVAILABILITY
NOMINAL Ø
(mm)
152, 203, 254, 305
254, 305, 356
254, 305, 356, 406
254, 305, 356, 406
H W L
30.00" (762 mm)
DISCHARGE DIMENSIONS
Unit Wt
A
B
C
D Lbs
(kg)
14.00" (356 mm) 5.00" (127 mm) .65" (17 mm) 78 (35)
16.00" (406 mm) 2.50" (64 mm) .75" (19 mm) 85 (39)
86 (39)
24.00" (610 mm)
3.00" (76 mm)
100 (45)
18.00" (457 mm)
1.66" (42 mm) 117 (53)
125 (57)
2.
(Valves 4"-14")
(Valve 16")
4.00"
(102 mm)
2.00"
(51 mm)
Flow Ring
Tubing
Primary
Airflow
W
Valves 4" & 5"
6.50"
(165 mm)
Air
Valve
4.00"
(102 mm)
18.875" Max.
(479 mm)
7.
Actuator, Controller and
Fan Controls located in this area
L
7.
Airflow
Plenum Inlet
4.
Fan Size
Filter Size
02SQ
14" x14" x1"
(356 mm x 356 mm x 25 mm)
TOP VIEW
03SQ
04SQ
05SQ
16" x 20" x 1"
(406 mm x 508 mm x 25 mm)
Filter
Airflow
Discharge Outlet
Panel slides
for Motor access
06SQ
07SQ
20" x 20" x 1"
(508 mm x 508 mm x 25 mm)
5.50" Max.
(140 mm)
NOTES:
1. Allow a minimum 6" (152 mm) plenum inlet clearance for
unducted installations.
2. See Installation Documents for exact hanger bracket location.
11.30" Max.
(287 mm)
B
H
3. Air valve centered between top and bottom panel.
4. For motor access, remove bottom screw on hanger brackets
to slide panel as shown in drawing.
5. Attenuator option not available with this unit layout.
7.
D
6. All high & low voltage controls have same-side NEC jumpback
clearance. (Left-hand shown, right-hand/mirror image optional.)
7. Maximum dimensions for controls area shown. Configurations and
types of control boxes vary according to control types selected. See
"Enclosure Details" for specific layout.
A
C
DISCHARGE VIEW
FPS 26
VAV-PRC008-EN

Fan-Powered
Series
Dimensional
Data
SERIES COOLING ONLY (VSCF) WITH OPTIONAL ATTENUATOR
FAN
SIZE
02SQ
03SQ
INLET SIZE
NOMINAL Ø
INCHES
6, 8, 10, 12
INLET SIZE
AVAILABILITY
NOMINAL Ø
(mm)
152, 203, 254, 305
H W L
DISCHARGE DIMENSIONS
A
B
14.00" (356 mm)
16.00" (406 mm)
C
5.00" (127 mm)
2.50" (64 mm)
D
.65" (17 mm)
.75" (19 mm)
Unit Wt
Lbs
(kg)
78 (35)
85 (39)
05SQ
07SQ
10, 12, 14
10, 12, 14, 16
254, 305, 356
254, 305, 356, 406
254, 305, 356, 406
30.00" (762 mm)
24.00" (610 mm)
3.00" (76 mm)
100 (45)
1.66" (42 mm) 117 (53)
125 (57)
2.
4.
Optional Attenuator
Field Installed
(Valves 4"-14")
(Valve 16")
4.00"
(102 mm)
2.00"
(51 mm)
W
Flow Ring
Tubing
Primary
Airflow
Air
Valve
4.00"
(102 mm)
Valves 4" & 5"
6.50"
(165 mm)
8.
Actuator, Controller and
18.875" Max.
(479 mm)
Optional Attenuator
Field Installed
Airflow
Plenum Inlet
Filter
Fan Size
Filter Size
Atten Wt
Lbs
(kg)
8.
L
40.00"
(1016 mm)
02SQ
03SQ
04SQ
05SQ
14" x14" x1"
(356 mm x 356 mm x 25 mm)
16" x 20" x 1"
(406 mm x 508 mm x 25 mm)
46 (21)
48 (22)
06SQ
07SQ
20" x 20" x 1"
(508 mm x 508 mm x 25 mm)
54 (25)
TOP VIEW
6.
Panel slides
for Motor Access
5.50" Max.
(140 mm)
Airflow
Discharge Outlet
30.00"
(762 mm)
NOTES:
1. Allow a minimum 6" (152 mm) plenum inlet
clearance for unducted installations.
2. Filter location with optional Attenuator.
3. Attenuator-factory assembled, field installed.
H
11.30" Max.
(287 mm)
B
4. See Installation Documents for exact hanger
bracket location.
5. Air valve centered between top and bottom panel.
8.
D
6. For motor access, remove bottom screw on
hanger brackets to slide panel as shown in drawing.
7. All high & low voltage controls have same-side NEC
jumpback clearance. (Left-hand shown, right-hand/
mirror image optional.)
DISCHARGE VIEW
A
C
8. Maximum dimensions for controls area shown.
Configurations and types of control boxes vary
according to control type selected. See "Enclosure
Details" for specific layout.
VAV-PRC008-EN FPS 27

Fan-Powered
Series
Dimensional
Data
NARROW CORRIDOR DESIGN SERIES COOLING (VSCF) WITHOUT ATTENUATOR
FPS 28
VAV-PRC008-EN

Fan-Powered
Series
Dimensional
Data
NARROW CORRIDOR DESIGN SERIES COOLING ONLY (VSCF) W/OPTIONAL ATTENUATOR
VAV-PRC008-EN FPS 29

Fan-Powered
Series
Dimensional
Data
SERIES HOT WATER (VSWF) WITHOUT ATTENUATOR
FAN
SIZE
02SQ
03SQ
04SQ
05SQ
06SQ
07SQ
INLET SIZE INLET SIZE
DISCHARGE DIMENSIONS
AVAILABILITY AVAILABILITY
H
W
L
NOMINAL Ø NOMINAL Ø
C
A
B
INCHES
(mm)
4, 5, 6, 8, 10 104, 127, 152, 203, 254 15.50" (394 mm) 22.00" (559 mm) 34.00" (864 mm) 12.00" (305 mm) 14.00" (356 mm) 5.00" (127 mm)
6, 8, 10, 12 152, 203, 254, 305 17.50" (445 mm)
24.00" (610 mm) 40.00" (1016 mm) 19.00" (483 mm) 16.00" (406 mm) 2.50" (64 mm)
10, 12, 14
10, 12, 14, 16
10, 12, 14, 16
254, 305, 356
254, 305, 356, 406
254, 305, 356, 406
30.00" (762 mm)
24.00" (610 mm)
3.00" (76 mm)
D
.65" (17 mm)
.75" (19 mm)
Unit Wt
E Lbs
(kg)
78 (35)
10.75" (273 mm)
85 (39)
100 (45)
117 (53)
125 (57)
2.
(Valves 4"-14")
(Valve 16")
4.00"
(102 mm)
2.00"
(51 mm)
Primary
Airflow
W
Flow Ring
Tubing
Valves 4" & 5"
6.50"
(165 mm)
Air
Valve
4.00"
(102 mm)
18.875" Max.
(479 mm)
9.
Actuator, Controller and
Fan Controls located in this area
L
9.
Airflow
Plenum Inlet
4.
Fan Size
Filter Size
02SQ
14" x14" x1"
(356 mm x 356 mm x 25 mm)
Filter
3.00" x 7.00"
(76 mm x 178 mm)
Coil Access
Water Coil
Panel slides
for Motor access
E
03SQ
04SQ
05SQ
06SQ
07SQ
16" x 20" x 1"
(406 mm x 508 mm x 25 mm)
20" x 20" x 1"
(508 mm x 508 mm x 25 mm)
Coil Connection
TOP VIEW
Airflow
Discharge Outlet
NOTES:
1. Allow a minimum 6" (152 mm) plenum inlet clearance for
unducted installations.
2. See Installation Documents for exact hanger bracket location.
5.50" Max.
(140 mm)
3. Air valve centered between top and bottom panel.
4. For motor access, remove bottom screw on hanger brackets
to slide panel as shown in drawing.
5. Attenuator option not available with this unit layout.
11.30" Max.
(287 mm)
B
H
6. Heating coil uninsulated. External insulation may be fieldsupplied
and installed as required.
7. Rotate coil 180˚ for right-hand coil connection.
8. All high & low voltage controls have same-side NEC jumpback
clearance. (Left-hand shown, right-hand/mirror image optional.)
9.
D
9. Maximum dimensions for controls area shown. Configurations and
types of control boxes vary according to control types selected. See
"Enclosure Details" for specific layout.
A
C
FPS 30
DISCHARGE VIEW
VAV-PRC008-EN

Fan-Powered
Series
Dimensional
Data
INLET SIZE INLET SIZE
DISCHARGE DIMENSIONS
FAN AVAILABILITY AVAILABILITY
H
W
L
SIZE NOMINAL Ø NOMINAL Ø
A
B
INCHES
(mm)
C
02SQ
15.50" (394 mm)
34.00" (864 mm)
14.00" (356 mm) 5.00" (127 mm)
03SQ 6, 8, 10, 12 152, 203, 254, 305 17.50" (445 mm)
40.00" (1016 mm) 19.00" (483 mm) 16.00" (406 mm) 2.50" (64 mm)
152, 203, 254, 305, 356
05SQ 10, 12, 14 254, 305, 356
30.00" (762 mm)
24.00" (610 mm)
3.00" (76 mm)
10, 12, 14, 16 254, 305, 356, 406 21.50" (546 mm)
18.00" (457 mm)
07SQ 10, 12, 14, 16 254, 305, 356, 406
D
E
Unit Wt
Lbs
(kg)
100 (45)
125 (57)
Attn Wt
Lbs
(kg)
48 (22)
2.
4.
Optional Attenuator
Field Installed
4.00"
(Valves 4"-14")
(102 mm)
2.00"
(Valve 16")
(51 mm)
Flow Ring
Tubing
Primary
Airflow
W
Valves 4" & 5"
6.50"
(165 mm)
Air
Valve
4.00"
(102 mm)
Actuator, Controller and
Fan Controls located in this area
10.
Optional Attenuator
Field Installed
18.875" Max.
(479 mm)
Airflow
Plenum Inlet
Filter
Fan Size
Filter Size
Atten Wt
Lbs
(kg)
10.
L
40.00"
(1016 mm)
02SQ
03SQ
04SQ
05SQ
14" x14" x1"
(356 mm x 356 mm x 25 mm)
16" x 20" x 1"
(406 mm x 508 mm x 25 mm)
46 (21)
48 (22)
06SQ
07SQ
20" x 20" x 1"
(508 mm x 508 mm x 25 mm)
54 (25)
TOP VIEW
6.
H
3.00" x 7.00"
(76 mm x 178 mm)
Coil Access
Coil Connection
5.50" Max.
(140 mm)
11.30" Max.
(287 mm)
10.
Water Coil
Airflow
Discharge Outlet
E
B
30.00"
(762 mm)
Panel slides
for Motor Access
D
10. Maximum dimensions for controls area shown.
Configurations and types of control boxes vary
DISCHARGE VIEW
A
C
according to control type selected. See "Enclosure
Details" for specific layout.
VAV-PRC008-EN FPS 31
NOTES:
1. Allow a minimum 6" (152 mm) plenum inlet
clearance for unducted installations.
2. Filter location with optional Attenuator.
3. Attenuator-factory assembled, field installed.
4. See Installation Documents for exact hanger
bracket location.
5. Air valve centered between top and bottom panel.
6. For motor access, remove bottom screw on
hanger brackets to slide panel as shown in drawing.
7. Heating coil uninsulated. External insulation may be
field supplied and installed as required.
8. Rotate coil 180˚ for right-hand coil connection.
9. All high & low voltage controls have same-side NEC
jumpback clearance. (Left-hand shown, right-hand/
mirror image optional.)

Fan-Powered
Series
Dimensional
Data
NARROW CORRIDOR DESIGN SERIES HOT WATER (VSWF) WITHOUT ATTENUATOR
FPS 32
VAV-PRC008-EN

Fan-Powered
Series
Dimensional
Data
NARROW CORRIDOR DESIGN SERIES HOT WATER (VSWF) W/OPTIONAL ATTENUATOR
VAV-PRC008-EN FPS 33

Fan-Powered
Series
Dimensional
Data
COIL INFORMATION FOR SERIES 1-ROW COIL
FAN
SIZE
COIL
CONNECTION
A
B
L
H
W
02SQ
03SQ
04SQ
.875" (22 mm) O.D.
9.75" (248 mm)
13.75" (349 mm)
2.00" (51 mm)
12.20" (310 mm)
19.00" (533 mm)
14.00" (356 mm)
16.00" (406 mm)
6.75" (171 mm)
10.75" (273 mm)
05SQ
24.00" (610 mm)
06SQ
15.75" (400 mm)
1.00" (25 mm)
18.00" (457 mm)
6.75" (171 mm)
07SQ
L
H
W
INLET
B
FAN SIZE
INTERNAL
VOLUME
GAL (IN)
OPERATING
WEIGHT
LBS (KG)
02SQ
0.10
(.38)
7.8
(3.5)
7.81"
(198 mm)
A
AIR FLOW
03SQ
04SQ
05SQ
0.21
(.79)
22.9
(10.4)
0.26 (.98) 27.2 (12.3)
06SQ
07SQ
0.26
(.98) 16.8
(7.6)
NOTES:
ACCESS
PANEL
INLET
A
B
1. Location of coil connections is determined by facing air stream.
L.H. Coil connections shown, R.H. opposite.
2. Coil furnished with stub sweat connections.
3.40"
(86 mm)
1.125"
(29 mm)
3. Coils can be field rotated for opposite connections. Note: Water
inlet is always the bottom connection.
4. Access Panel is standard.
1.125"
(29 mm)
5. Flanged Coil shown, Slip and Drive available.
FPS 34
VAV-PRC008-EN

Fan-Powered
Series
Dimensional
Data
COIL INFORMATION FOR SERIES 2-ROW COIL
FAN
SIZE
COIL
CONNECTION
A
B
L
H
W
02SQ
03SQ
04SQ
05SQ
06SQ
07SQ
.875" (22 mm) O.D.
10.25" (260 mm)
13.75" (349 mm)
15.75" (400 mm)
2.00" (51 mm)
1.00" (25 mm)
12.20" (310 mm)
19.00" (533 mm)
24.00" (610 mm)
14.00" (356 mm)
16.00" (406 mm)
18.00" (457 mm)
6.75" (171 mm)
10.75" (273 mm)
6.75" (171 mm)
W
L
B
INLET
B
H
7.82"
(198 mm)
A
AIR FLOW
ACCESS PANEL
INLET
A
FAN SIZE
INTERNAL
VOLUME
GAL (L)
OPERATING
WEIGHT
LBS (KG)
02SQ
0.17 (.64) 7.8
(3.5)
3.40"
(86 mm)
1.12"
(29 mm)
03SQ
04SQ
0.37 (1.40) 22.9 (10.4)
1.94"
(51 mm)
05SQ
0.46 (1.74) 31.2 (14.2)
06SQ
07SQ
0.46 (1.74) 23.7 (10.8)
NOTES:
1. Location of coil connections is determined by facing air stream. L.H. coil
connections shown, R.H. opposite.
2. Coil furnished with stub sweat connections.
3. Coils can be field-rotated for opposite connections. Note: Water
inlet is always the bottom connection.
4. Access panel is standard.
5. Flanged coil shown. Slip and Drive available.
VAV-PRC008-EN FPS 35

Fan-Powered
Series
Dimensional
Data
SERIES ELECTRIC (VSEF) WITHOUT ATTENUATOR
FAN
SIZE
AVAILABILITY
NOMINAL Ø
02SQ
03SQ
05SQ
INCHES
4, 5, 6, 8, 10
6, 8, 10, 12
10, 12, 14
07SQ 10, 12, 14, 16
INLET SIZE
AVAILABILITY
NOMINAL Ø
(mm)
104, 127, 152, 203, 254
152, 203, 254, 305
254, 305, 356
254, 305, 356, 406
254, 305, 356, 406
H
15.50" (394 mm)
17.50" (445 mm)
W
30.00" (762 mm)
21.50" (546 mm)
L
34.00" (864 mm)
DISCHARGE DIMENSIONS
A
B
C
D
E
18.50" (470 mm)
17.00" (432 mm)
Unit Wt
Lbs
(kg)
78 (35)
85 (39)
86 (39)
100 (45)
117 (53)
125 (57)
2.
(Valves 4"-14")
4.00"
(102 mm)
W
(Valve 16")
2.00"
(51 mm)
Flow Ring
Tubing
Primary
Airflow
Valves 4" & 5"
6.50"
(165 mm)
Air
Valve
4.00"
(102 mm)
18.875" Max.
(479 mm)
8.
Airflow
Plenum Inlet
L
8.
Actuator, Controller and
Fan Controls located in this area
Filter
4.
Fans
02SQ
Fans
03SQ–05SQ
Fans
06SQ–07SQ
1.00"
(25 mm)
2.00"
(51 mm)
0.60"
(15 mm)
Fan Size
Filter Size
TOP VIEW
E
Electric
Heater
Panel slides
for Motor access
02SQ
03SQ
04SQ
05SQ
14" x14" x1"
(356 mm x 356 mm x 25 mm)
16" x 20" x 1"
(406 mm x 508 mm x 25 mm)
06SQ
07SQ
20" x 20" x 1"
(508 mm x 508 mm x 25 mm)
6.20"
(157 mm)
5.50" Max.
(140 mm)
Airflow
Discharge Outlet
D
A
C
Fans
02SQ
Fans
–
Fans
–
1.50"
(38 mm)
1.50"
3.00"
(76 mm)
NOTES:
1. Allow a minimum 6" (152 mm) plenum inlet clearance for
unducted installations.
2. See Installation Documents for exact hanger bracket location.
3. Air valve centered between top and bottom panel.
4. For motor access, remove bottom screw on hanger brackets
to slide panel as shown in drawing.
11.30" Max.
(287 mm)
B
H
5. Attenuator option not available with this unit layout.
6. Heating coil uninsulated. External insulation may be fieldsupplied
and installed as required.
7. All high & low voltage controls have same-side NEC jumpback
clearance. (Left-hand shown, right-hand/mirror image optional.)
8.
8. Maximum dimensions for controls area shown. Configurations and
types of control boxes vary according to control types selected. See
"Enclosure Details" for specific layout.
DISCHARGE VIEW
FPS 36
VAV-PRC008-EN

Fan-Powered
Series
Dimensional
Data
SERIES ELECTRIC (VSEF) WITH OPTIONAL ATTENUATOR
INLET SIZE INLET SIZE
FAN
AVAILABILITY
SIZE NOMINAL Ø NOMINAL Ø
H
(mm)
02SQ 4, 5, 6, 8, 10 104, 127, 152, 203, 254 15.50" (394 mm)
6, 8, 10, 12 152, 203, 254, 305
04SQ
10, 12, 14
152, 203, 254, 305, 356
254, 305, 356
06SQ
07SQ
10, 12, 14, 16
10, 12, 14, 16
254, 305, 356, 406
254, 305, 356, 406
21.50" (546 mm)
W
DISCHARGE DIMENSIONS
Unit Wt
L
C
D
E Lbs
A
B
(kg)
34.00" (864 mm) 12.00" (305 mm) 10.00" (254 mm) 5.00" (127 mm) 18.00" (457 mm) 18.50" (470 mm) 78 (35)
85 (39)
16.00" (406 mm)
86 (39)
22.00" (559 mm)
100 (45)
19.00" (483 mm) 14.00" (356 mm) 5.50" (140 mm) 25.00" (635 mm)
117 (53)
125 (57)
2.
4.
Optional Attenuator
Field Installed
(Valves 4"-14")
4.00"
(102 mm)
W
(Valve 16")
2.00"
(51 mm)
Flow Ring
Tubing
Primary
Airflow
Air
Valve
4.00"
(102 mm)
Valves 4" & 5"
6.50"
(165 mm)
Actuator, Controller and
Fan Controls located in this area
9.
Optional Attenuator
Field Installed
18.875" Max.
(479 mm)
Airflow
Plenum Inlet
Fan Size
Filter Size
Atten Wt
Lbs
(kg)
9.
TOP VIEW
L
40.00"
(1016 mm)
Filter
02SQ
03SQ
04SQ
05SQ
06SQ
07SQ
14" x14" x1"
(356 mm x 356 mm x 25 mm)
16" x 20" x 1"
(406 mm x 508 mm x 25 mm)
20" x 20" x 1"
(508 mm x 508 mm x 25 mm)
46 (21)
48 (22)
54 (25)
Fans
02SQ
Fans
–
Fans
06SQ–
E
1.00"
(25 mm)
2.00"
0.60"
Electric
Heater
30.00"
(762 mm)
6.
Panel slides
for Motor Access
NOTES:
1. Allow a minimum of 6" (152 mm) plenum inlet
clearance for unducted installations.
2. Filter location with optional Attenuator.
3. Attenuator-factory assembled, field installed.
5.50" Max.
(140 mm)
6.20"
(157 mm)
Airflow
Discharge Outlet
D
A
C
Fans
02SQ
Fans
03SQ–05SQ
Fans
06SQ–07SQ
1.50"
(38 mm)
1.50"
(38 mm)
3.00"
(76 mm)
4. See Installation Documents for exact hanger
bracket location.
5. Air valve centered between top and bottom panel.
6. For motor access, remove bottom screw on hanger
brackets to slide panel as shown in drawing.
7. Heating coil uninsulated. External insulation may be
field suppled and installed as required.
11.30" Max.
(287 mm)
B
H
8. All high & low voltage controls have same-side NEC
jumpback clearance. (Left-hand shown, right-hand/
mirror image optional.)
9. Maximum dimensions for controls area shown.
Configurations and types of control boxes vary
according to control type selected. See "Enclosure
Details" for specific layout.
9.
DISCHARGE VIEW
VAV-PRC008-EN FPS 37

Fan-Powered
Series
Mechanical
Specifications
MODELS VSCF, VSWF,
and VSEF
Series fan-powered terminal
units.
VSCF – Cooling Only
VSWF – With Hot Water Coil
VSEF – With Electric Coil
CASING
22-gage galvanized steel. Hanger
brackets, side access, and filter which
is on the plenum inlet are provided
as standard.
AGENCY LISTING
The unit is UL and Canadian UL
Listed as a room air terminal unit.
Control # 9N65.
ARI 880 Certified.
INSULATION
1/2" (12.7 mm) Matte-faced
Insulation—The interior surface of the
unit casing is acoustically and
thermally lined with ½-inch, 1.5 lb/ft 3
(12.7 mm, 24.0 kg/m 3 ) composite
density glass fiber with a high-density
facing. The insulation R-Value is 1.9. The
insulation is UL listed and meets NFPA-
90A and
UL 181 standards. There are no
exposed edges of insulation (complete
metal encapsulation).
1" (25.4 mm) Matte-faced
Insulation—The interior surface of the
unit casing is acoustically and
thermally lined with 1-inch, 1.0 lb/ft 3
(25.4 mm, 16.0 kg/m 3 ) composite
density glass fiber with a high-density
facing. The insulation R-Value is 3.85
The insulation is UL listed and meets
NFPA-90A and UL 181 standards. There
are no exposed edges of insulation
(complete metal encapsulation).
1/2" (12.7 mm) Foil-faced
Insulation—The interior surface of the
unit casing is acoustically and
thermally lined with ½-inch, 1.5 lb/ft 3
(12.7 mm, 24.0 kg/m 3 ) density glass
fiber with foil facing. The insulation
R-Value is 2.1. The insulation is UL
listed and meets NFPA-90A and UL 181
standards as well as bacteriological
standard ASTM C 665. There are no
exposed edges of insulation (complete
metal encapsulation).
1" (25.4 mm) Foil-faced
Insulation—The interior surface of the
unit casing is acoustically and
thermally lined with 1-inch, 1.5 lb/ft 3
(25.4 mm, 24.0 kg/m 3 ) density glass
fiber with foil facing. The insulation
FPS 38
Fan–Inlet Combinations:
VSXF
Inlet 02SQ 03SQ 04SQ 05SQ 06SQ 07SQ
4" X
5" X
6" X X X
8" X X X
10" X X X X X X
12" X X X X X
14" X X X X
16" X X
R-Value is 4.1. The insulation is UL
listed and meets NFPA-90A and UL 181
standards as well as bacteriological
standard ASTM C 665. There are no
exposed edges of insulation (complete
metal encapsulation).
1" (25.4 mm) Double-wall
Insulation—The interior surface of
the unit casing is acoustically and
thermally lined with a 1-inch, 1.0 lb./ft 3
(25.4 mm, 16.0 kg/m 3 ) composite
density glass fiber with high-density
facing. The insulation R-value is 3.8.
The insulation is UL listed and meets
NFPA-90A and UL 181 standards. The
insulation is covered by an interior
liner made of 26-gage galvanized steel.
All wire penetrations are covered by
grommets. There are no exposed
edges of insulation (complete metal
encapsulation).
3/8" (9.5 mm) Closed-cell
Insulation—The interior surface of the
unit casing is acoustically and
thermally lined with 3/8-inch, 4.4 lb/ft 3
(9.5 mm, 70.0 kg/m 3 ) closed-cell
insulation. The insulation is UL listed
and meets NFPA-90A and UL 181
standards. The insulation has an
R-Value of 1.4. There are no exposed
edges of insulation (complete metal
encapsulation).
PRIMARY AIR VALVE
Air Valve Round—The primary air
inlet connection is an 18-gage
galvanized steel cylinder sized to fit
standard round duct. A multiple-point,
averaging flow sensing ring is
provided with balancing taps for
measuring +/-5% of unit cataloged
airflow. An airflow-versus- pressure
differential calibration chart is
provided. The damper blade is
constructed of a closed-cell foam seal
that is mechanically locked between
two 22-gage galvanized steel disks.
The damper blade assembly is
connected to a cast zinc shaft
supported by self-lubricating bearings.
The shaft is cast with a damper
position indicator. The valve assembly
includes a mechanical stop to prevent
over-stroking. At 4.0 in. wg, air valve
leakage does not exceed 1% of
cataloged airflow.
ATTENUATOR
The attenuator is 22-gage galvanized
steel with an internal acoustical liner.
Attenuators have been tested in
accordance with ARI 880 standards.
FAN MOTOR
PSC—Single-speed, direct-drive,
permanent split capacitor type.
Thermal overload protection provided.
Motors will be designed specifically for
use with an open SCR. Motors will be
single-speed with standard SCR for
speed control. Motors will
accommodate anti-backward rotation
at start up. Motor and fan assembly is
isolated from terminal unit.
ECM—Electrically Commutated Motor
is designed for high-efficient operation
with over 70% efficiency throughout
the operating range.
FAN SPEED CONTROL
Variable Speed Control Switch
(SCR)—The SCR speed control device
is provided as standard and allows the
operator infinite fan speed adjustment.
TRANSFORMER
The 50-VA transformer is factoryinstalled
in the fan control box to
provide 24 VAC for controls.
DISCONNECT SWITCH
A toggle disconnect is provided as
standard and allows the operator to
turn the unit on or off by toggling to
the appropriate setting. This switch
breaks both legs of power to the fan
and the electronic controls (if
applicable).
OUTLET CONNECTION
Flanged Connection—A
rectangular opening on the unit
discharge to accept a 90° flanged
ductwork connection.
FILTER
A 1" (25 mm) filter is provided on the
plenum inlet and attaches to the unit
with a filter frame.
VAV-PRC008-EN

Fan-Powered
Series
Mechanical
Specifications
ACCESS PANEL
Internal access is provided through
side panel.
HOT WATER COIL
Series Water Coils—factory-installed
on the fan discharge. The coil has
1-row with 144 aluminum-plated fins
per foot (.305 m) and, if needed, 2-row
with 144 aluminum-plated fins per foot
(.305 m). Full fin collars provided for
accurate fin spacing and maximum
fin-tube contact. The 3/8" (9.5 mm)
OD seamless copper tubes are
mechanically expanded into the fin
collars. Coils are proof tested at
450 psig (3102 kPa) and leak tested at
300 psig (2068 kPa) air pressure under
water. Coil connections are brazed.
Gasketed access panels, which are
standard, are attached with screws.
ELECTRIC HEAT COIL
The electric heater is factory-provided
and -installed, UL recognized
resistance open-type heater. It also
contains a disc-type automatic pilot
duty thermal primary cutout, and
manual reset load carrying thermal
secondary device. Heater element
material is nickel-chromium. The heater
terminal box is provided with 7/8" (22
mm) knockouts for customer power
supply. Terminal connections are plated
steel with ceramic insulators. Heater
control access is on the discharge side
of the unit. All fan-powered units with
electric reheat are single-point
power connections.
ELECTRIC HEAT OPTIONS
Magnetic Contactor—An optional
electric heater 24-volt contactor for use
with direct digital control (DDC) or
analog electronic controls.
Mercury Contactor—An optional
electric heater 24-volt contactor for use
with direct digital control (DDC) or
analog electronic controls.
P.E. Switch with Magnetic
Contactor—This optional switch and
magnetic contactor is for use with
pneumatic controls.
P.E. Switch with Mercury
Contactor—This optional switch
optional and mercury contactor is for
use with pneumatic controls.
Airflow Switch—An optional air
pressure device designed to disable
the heater when the system fan is off.
prevent power surge damage to the
electric heater.
Any electric heat unit with a calculated
MCA greater than or equal to 30 will
have a fuse provided.
Disconnect Switch—An optional
factory-provided door interlocking
disconnect switch on the heater control
panel disengages primary voltage to
the terminal.
UNIT CONTROLS SEQUENCE
OF OPERATION
The controller will start and run the fan
continuously during the occupied
mode and intermittently during the
unoccupied mode. Upon a further call
for heat, any hot water or electric heat
associated with the unit is enabled.
DIRECT DIGITAL CONTROLS
DDC Actuator—Trane 3-wire,
24-VAC, floating-point control actuator
with linkage release button. Torque is
35 in-lb minimum and is non-spring
return with a 90-second drive time.
Travel is terminated by end stops at
fully opened and closed positions. An
integral magnetic clutch eliminates
motor stall.
Direct Digital Controller—The
microprocessor based terminal unit
controller provides accurate, pressureindependent
control through the use
of a proportional integral control
algorithm and direct digital control
technology. The controller, named the
Unit Control Module (UCM), monitors
zone temperature setpoints, zone
temperature and its rate of change,
and valve airflow using a differential
pressure signal from the pressure
transducer. Additionally, the controller
can monitor either supply duct air
temperature or CO 2
concentration via
appropriate sensors. The controller is
provided in an enclosure with 7/8"
(22 mm) knockouts for remote control
wiring. A Trane UCM zone sensor is
required.
DDC Zone Sensor—The UCM
controller senses zone temperature
through a sensing element located in
the zone sensor. In addition to the
sensing element, zone sensor options
may include an externally-adjustable
setpoint, communications jack for use
with a portable edit device, and an
override button to change the
individual controller from unoccupied
to occupied mode. The override button
has a cancel feature that will return the
system to unoccupied. Wired zone
sensors utilize a thermistor to vary the
in the zone temperature. Wiring to the
UCM controller must be 18- to 22-awg.
twisted pair wiring. The setpoint
adjustment range is 50–88ºF (10–31°C).
Depending upon the features available
in the model of sensor selected, the
zone sensor may require from a 2-wire
to a 5-wire connection. Wireless zone
sensors report the same zone
information as wired zone sensors, but
do so using radio transmitter
technology. Therefore with wireless,
wiring from the zone sensor to the
UCM is unnecessary.
Digital Display Zone Sensor with
Liquid Crystal Display (LCD)—
The digital display zone sensor
contains a sensing element, which
sends a signal to the UCM. A Liquid
Crystal Display (LCD) displays setpoint
or space temperature. Sensor buttons
allow the user to adjust setpoints, and
allow space temperature readings to
be turned on or off. The digital display
zone sensor also includes a
communication jack for use with a
portable edit device, and an override
button to change the UCM from
unoccupied to occupied. The
override button has a cancel feature,
which returns the system to
unoccupied mode.
Trane LonTalk—The controller is
designed to send and receive data
using SCC LonTalk profile. Current unit
status conditions and setpoints may be
monitored and/or edited from any of
several LonTalk-compatible systemlevel
controllers.
ANALOG ELECTRONIC CONTROLS
Analog Actuator—A Trane 3- wire,
24-VAC, floating-point control actuator
with linkage release button. Torque is
35 in-lb minimum and is non-spring
return with a 90-second drive time.
Travel is terminated by end stops at
fully-opened and -closed positions. An
integral magnetic clutch eliminates
motor stall.
Analog Electronic Controller—
The controller consists of a circuit
board that offers basic VAV unit
operation and additional override
functions and operates using 24 VAC
power. The controller uses a capacitive
type pressure transducer to maintain
consistent air delivery regardless of
system pressure changes. The
enclosure has 7/8" (22 mm) knockouts
for remote control wiring. A Trane
electronic zone sensor is required.
Power Fuse—If a power fuse is
chosen with a unit containing electric
heat, then a safety fuse is located in the
electric heater’s line of power to
voltage output in response to changes
VAV-PRC008-EN FPS 39

Fan-Powered
Series
Mechanical
Specifications
Analog Electronic Thermostat—
This single-temperature, wall-mounted
electronic device utilizes a thermistor
to vary the voltage output in response
to changes in the zone temperature.
Connections to the VAV unit circuit
board are made using standard threeconductor
thermostat wire. The
setpoint adjustment range is 63–85ºF
(17–29°C). The sensor is available in
two models. One model has a
concealed, internally-adjustable
setpoint. The other model has an
externally-adjustable setpoint.
PNEUMATIC CONTROLS
Normally Open Actuator—
Pneumatic 3 to 8 psig (20 to 55 kPa)
spring-range pneumatic actuator.
3011 Pneumatic Volume Regulator
(PVR)—The regulator is a thermostat
reset velocity controller, which
provides consistent air delivery within
5% of cataloged flow down to 18% of
unit cataloged cfm, independent of
changes in system static pressure.
Factory-calibrated, field-adjustable
setpoints for minimum and maximum
flows. Average total unit bleed rate,
excluding thermostat, is 28.8 scim at
20 psig (7.87 ml/min at 138 kPa) supply.
UNIT OPTIONS
Power Fuse (VSCF, VSWF)—
Optional fuse is factory-installed in the
primary voltage hot leg.
Hot Water Valves
Two-Position Valve—The valve is a
field-adaptable, 2-way or 3-way
configuration and ships with a cap to
be field-installed when configured as a
2-way valve. All connections are
National Pipe Thread (NPT). The valve
body is forged brass with a stainless
steel stem and spring. Upon demand,
the motor strokes the valve. When the
actuator drive stops, a spring returns
the valve to its fail-safe position.
Flow Capacity – 1.17 Cv
Overall Diameter – ½" NPT
Close-off Pressure – 30 psi (207 kPa)
Flow Capacity – 3.0 Cv
Overall Diameter – 3/4" NPT
Close-off Pressure – 14.5 psi (100 kPa)
Flow Capacity – 6.4 Cv
Overall Diameter – 1" NPT
Close-off Pressure – 9 psi (62 kPa)
Maximum Operating Fluid
Temperature – 203ºF (95ºC)
Maximum System Pressure – 300 psi
(2067 kPa).
Maximum Static Pressure – 300 psi
(2067 kPa)
Electrical Rating – 7 VA at 24 VAC,
6.5 Watts, 50/60 Hz
8 feet (2.44 m) of plenum rated wire
lead is provided with each valve.
Proportional Water Valve—The
valve is a field-adaptable, 2-way or 3-
way configuration and ships with a cap
over the bottom port. This configures
the valve for 2-way operation. For 3-
way operation, remove the cap. The
valve is linear equal percentage
design. The intended fluid is water or
water and glycol (50% maximum
glycol). The actuator is a synchronous
motor drive. The valve is driven to a
predetermined position by the UCM
controller using a proportional plus
integral control algorithm. If power is
removed, the valve stays in its last
position. The actuator is rated for
plenum applications under UL 94-5V
and UL 873 standards.
Pressure and Temperature Ratings –
The valve is designed and tested in full
compliance with ANSI B16.15 Class
250 pressure/temperature ratings,
ANSI B16.104 Class IV control shutoff
leakage, and ISA S75.11 flow
characteristic standards.
Flow Capacity – 0.7 Cv, 2.2 Cv,
3.8 Cv, and 6.6 Cv
Overall Diameter – ½" NPT, ¾" NPT
(6.6 Cv)
Maximum Allowable Pressure – 300
psi (2068kPa)
Maximum Operating Fluid
Temperature – 200ºF (93°C)
Maximum Close-off Pressure – 55 psi
(379 kPa)
Electrical Rating – 6VA at 24 VAC.
10 feet (3.05 m) of plenum rated
22-gage wire for connection.
Terminations are #6 stabs.
FPS 40
VAV-PRC008-EN

Fan-Powered
Low-Height
Parallel
Table of
Contents
Service Model Number Description LHP 2 – 3
General Data – Valve/Controller Airflow Guidelines LHP 4
Performance Data – Air Pressure Requirements LHP 5 – 6
Performance Data – Fan Curves LHP 7 –8
Performance Data – Hot Water Coil LHP 9 – 10
Performance Data – Electrical Data LHP 11 – 12
Performance Data – Acoustics LHP 13 – 16
Dimensional Data LHP 17 – 26
Mechanical Specifications LHP 27 – 29
VAV-PRC008-EN LHP 1

LHP 2
Low-Height Parallel Fan-
Powered Terminal Units
The features of the low-height parallel
fan-powered terminal units are
described by the product categories
shown in bold. Within each category
the options available are listed.
LPCF
LPWF
LPEF
Fan-Powered
Low-Height
Parallel
Digit 1, 2—Unit Type
LP VariTrane fan-powered lowheight
parallel
Digit 3—Reheat
C Cooling Only
E Electric Heat
W Hot Water Heat
Digit 4—Development Sequence
F Sixth
Digit 5, 6—Primary Air Valve
05 5” inlet (350 maximum cfm)
06 6" inlet (500 maximum cfm)
08 8" inlet (900 maximum cfm)
RT 8" x 14" inlet (1800 maximum
cfm)
Digit 7, 8—Secondary Air Valve
00 N/A
Digit 9—Fan
V 08SQ 500 nominal cfm
W 09SQ 900 nominal cfm
X 10SQ 1800 nominal cfm
Digit 10, 11—Design Sequence
E0 Fifth (factory assigned)
Digit 12, 13, 14, 15—Controls
ENON No controls, field-installed
DDC/electric
PNON No controls, field-installed
pneumatic
DD00 Trane elec actuator only
DD01 DDC – cooling only
DD02 DDC – N.C. on/off water valve
control
DD03 DDC – prop hot water valve
control
DD04 DDC – on/off electric heat
control
DD05 DDC – pulse-width modulation
control
DD07 DDC – N.O. on/off water valve
control
DD11 LonTalk DDC Controller—
Cooling only
DD12 LonTalk DDC Controller w/ N.C.
on/off hot water control
DD13 LonTalk DDC Controller w/
proportional hot water control
DD14 LonTalk DDC Controller–on/off
electric heat control
DD15 LonTalk DDC Controller w/
pulse-width modulation
electric heat control
DD17 LonTalk DDC Controller w/ N.O.
on/off hot water control
FM00 FM customer actuator &
control
FM01 FM Trane actuator w/
customer-supplied controller
HNY2 FM Honeywell W7751H
INV3 FM Invensys MNL-V2R
PWR1 FM Siemens 540-100 w/
GDE131.1 actuator
Service
Model Number
Description
PWR2 FM Siemens 540-103 w/
GDE131/1 actuator
PW12 FM Siemens 550-065
PW13 FM Siemens 550-067
VMA2 FM Johnson VMA-1420
EI05 Analog – fan-powered parallel
with optional on/off reheat
PN00 PN – N.O. Trane pneumatic
actuator, R.A. stat
PN05 PN – N.O. PVR, R.A. stat
Notes:
N.C. = Normally-closed
N.O. = Normally-opened
DA Stat = Direct-acting pneumatic t-stat
(by others)
RA Stat = Reverse-acting pneumatic t-stat
(by others)
PN = Pneumatic
FM = Factory installation of customersupplied
controller
PVR = Pneumatic Volume Regulator
Digit 16—Insulation
A 1/2" Matte-faced
B 1" Matte-faced
C 1/2" Foil-faced
D 1" Foil-faced
F 1" Double-wall
G 3/8" Closed-cell
Digit 17—Motor Type
D PSC Motor
E High-efficiency motor (ECM)
Digit 18—Motor Voltage
1 115/60/1
2 277/60/1
3 347/60/1
5 230/50/1
Digit 19—Outlet Connection
1 Flanged
2 Slip & Drive
Digit 20—Not Used
0 N/A
Digit 21—Water Coil
0 None
1 1-Row–Plenum inlet installed
2 2-Row–Plenum inlet installed
3 1-Row–Discharge installed, LH
4 1-Row–Discharge installed, RH
5 2-Row–Discharge installed, LH
6 2-Row–Discharge installed, RH
Digit 22—Electrical Connections
L Left (airflow hitting you in the
face)
Digit 23—Transformer
0 N/A (provided as standard)
Digit 24—Disconnect Switch
0 None
W With
Note:
LPCF, LPWF – Toggle Disconnect
LPEF – Door Interlocking Power
VAV-PRC008-EN

Fan-Powered
Low-Height
Parallel
Service
Model Number
Description
Digit 25—Power Fuse
0 None
W With
Digit 26—Electric Heat Voltage
0 None
A 208/60/1
B 208/60/3
C 240/60/1
D 277/60/1
E 480/60/1
F 480/60/3
G 347/60/1
H 575/60/3
J 380/50/3
Digit 27, 28, 29—Electric Heat kW
000 None
005 0.5 kW
010 1.0 kW
015 1.5 kW
020 2.0 kW
025 2.5 kW
030 3.0 kW
035 3.5 kW
040 4.0 kW
045 4.5 kW
050 5.0 kW
055 5.5 kW
060 6.0 kW
065 6.5 kW
070 7.0 kW
075 7.5 kW
080 8.0 kW
090 9.0 kW
100 10.0 kW
110 11.0 kW
120 12.0 kW
130 13.0 kW
140 14.0 kW
Digit 30—Electric Heat Stages
0 None
1 1 Stage
2 2 Stages Equal
Digit 31—Contactors
0 None
1 24-volt magnetic
2 24-volt mercury
3 PE with magnetic
4 PE with mercury
Digit 32—Airflow Switch
0 None
W With
VAV-PRC008-EN LHP 3

Fan-Powered
Low-Height
Parallel
General Data—
Valve/Controller
Airflow Guidelines
Primary Airflow Control Factory Settings – I-P
Control Air Valve Maximum Valve Maximum Controller Minimum Controller Constant Volume
Type Size (in.) Cfm Cfm Cfm Cfm
5 350 40–350 0, 40–350 40–350
Direct Digital Control/ 6 500 60–500 0, 60–500 60–500
UCM 8 900 105–900 0, 105–900 105–900
8x14 2200 200–2200 0, 220–2200 220–2200
5 350 63–350 0, 63–350 63–350
Pneumatic with 6 500 73–500 0, 73–500 73–500
Volume Regulator 8 900 134–900 0, 134–900 134–900
8x14 2100 297–2100 0, 297–2100 297–2100
5 350 82–350 0, 82–350 82–350
Analog Electronic 6 500 120–500 0, 120–500 120–500
8 900 210–900 0, 210–900 210–900
8x14 2200 440–2200 0, 440–2200 440–2200
Primary Airflow Control Factory Settings – SI
Control Air Valve Maximum Valve Maximum Controller Minimum Controller Constant Volume
Type Size (in.) L/s L/s L/s L/s
5 165 19–165 0, 19–165 19–165
Direct Digital Control/ 6 236 28–236 0, 28–236 28–236
UCM 8 425 50–425 0, 50–425 50–425
8x14 1038 104–1038 0, 104–1038 104–1038
5 165 30–165 0, 30–165 30–165
Pneumatic with 6 236 35–236 0, 35–236 35–236
Volume Regulator 8 425 63–425 0, 63–425 63–425
8x14 991 140–991 0, 140–991 140–991
5 165 39–165 0, 39–165 39–165
Analog Electronic 6 236 57–236 0, 57–236 57–236
8 425 100–425 0, 100–425 100–425
8x14 1038 208–1038 0, 208–1038 208–1038
Note: Maximum airflow must be greater than or equal to minimum airflow.
LHP 4
VAV-PRC008-EN

Fan-Powered
Low-Height
Parallel
Performance
Data—Air Pressure
Requirements (I-P)
Unit Air Pressure Drop – in. wg (I-P)
Fan/Inlet Airflow Cooling Only Unit
Size Cfm (in. wg)
08SQ–05 150 0.01
200 0.02
250 0.03
350 0.05
08SQ–06 200 0.01
300 0.04
400 0.06
500 0.09
08SQ–08 400 0.01
600 0.09
800 0.16
900 0.20
09SQ–06 200 0.01
300 0.04
400 0.06
500 0.09
09SQ–08 400 0.01
600 0.09
800 0.16
900 0.20
09SQ–8x14 700 0.10
1100 0.25
1500 0.47
1900 0.75
10SQ–08 400 0.01
600 0.09
800 0.18
900 0.24
10SQ–8x14 725 0.18
1000 0.36
1200 0.53
1450 0.78
Notes:
1. Units with Electric Coils per fan size add 0.01" (3 Pa) to cooling
only value.
2. HW Coil only pressure drops are just for the heating coil.
Coil Air Pressure Drop – in. wg (I-P)
Fan Airflow 1-Row HW 2-Row HW
Size Cfm (in. wg) (in. wg)
08SQ 100 0.00 0.01
200 0.01 0.02
300 0.02 0.04
400 0.03 0.06
450 0.04 0.07
09SQ 250 0.01 0.03
400 0.03 0.06
550 0.05 0.10
700 0.08 0.15
850 0.11 0.20
10SQ 725 0.09 0.17
800 0.11 0.20
900 0.13 0.24
1000 0.16 0.29
1100 0.19 0.33
1150 0.20 0.35
Note: HW Coil Only pressure drops do not include unit
pressure drop.
Attenuator Air
Pressure Drop (I-P)
Fan Plenum
Size Cfm Attenuator
08SQ 150 0.01
250 0.03
350 0.05
450 0.07
09SQ 350 0.05
500 0.08
650 0.13
800 0.18
10SQ not available
VAV-PRC008-EN LHP 5

Fan-Powered
Low-Height
Parallel
Performance
Data—Air Pressure
Requirements (SI)
Unit Air Pressure Drop – Pa (SI)
Inlet/Fan Airflow Cooling Only Unit
Size L/s (Pa)
08SQ–05 71 2
94 5
118 7
165 13
08SQ–06 200 0.01
142 10
189 16
236 24
08SQ–08 189 2
283 21
378 40
425 51
09SQ–06 94 2
142 10
189 16
236 24
09SQ–08 189 2
283 21
378 40
425 51
09SQ–8x14 330 26
519 63
708 116
897 185
10SQ–08 189 2
283 23
378 45
425 59
10SQ–8x14 345 47
475 91
565 131
685 195
Notes:
1. Units with Electric Coils per fan size add 0.01" (3 Pa) to cooling
only value.
2. HW Coil only pressure drops are just for the heating coil.
Coil Air Pressure Drop – Pa (SI)
Fan Airflow 1-Row HW 2-Row HW
Size L/s (Pa) (Pa)
08SQ 47 1 2
94 2 5
142 4 10
189 7 15
212 9 18
09SQ 118 3 7
189 7 15
260 12 25
330 19 36
401 27 51
10SQ 342 22 43
375 26 49
425 33 60
475 40 72
520 46 82
543 49 87
Note: HW Coil Only pressure drops do not include unit
pressure drop.
Attenuator Air
Pressure Drop (SI)
Fan Plenum
Size L/s Attenuator
08SQ 71 0.01
118 0.01
165 0.02
212 0.02
09SQ 165 0.02
236 0.03
307 0.04
378 0.05
10SQ not available
LHP 6
VAV-PRC008-EN

Fan-Powered
Low-Height
Parallel
Performance
Data—
Fan Curves
Notes:
1. When attenuator is required, add
inlet attenuator pressure to discharge
static pressure for final fan performance.
Discharge Static Pressure
Pa In. wg Low-Height Parallel 08SQ—PSC
150
125
100
75
50
0.60
0.50
0.40
0.30
0.20
175 cfm min
(83 L/s)
25
0.10
150 200 250 300 350 400 450 500 550
71 94 118 142 165 189 212 236 260
Airflow
Cfm
L/s
Pa In. wg Low-Height Parallel 09SQ—PSC
199
0.80
174
0.70
LPCF and LPEF maximum
Minimum
1-row coil maximum
2-row coil maximum
Discharge Static Pressure
150
125
100
75
0.60
0.50
0.40
0.30
410 cfm min
(193 L/s)
50
0.20
25
0.10
400 500 600 700 800 900 1000
189 236 273 330 378
425
472
Airflow
Cfm
L/s
Pa
199
In. wg
0.80
Low-Height Parallel 10SQ—PSC
174
0.70
Discharge Static Pressure
150
125
100
75
50
0.60
0.50
0.40
0.30
0.20
25
0.10
300 500 700 900 1100
1300
1500
Cfm
142 236 330 425 519
614
708
L/s
Airflow
VAV-PRC008-EN LHP 7

Fan-Powered
Low-Height
Parallel
ECM Data—
Fan Curves
Discharge Static Pressure
Pa In. wg LPxF 08SQ—ECM
125
100
75
50
0.50
0.40
0.30
0.20
100 cfm min
(47 L/s)
Notes:
1. ECMs (Electrically Commutated
Motors) are ideal for systems seeking
maximum motor efficiency.
2. When attenuator is required, add inlet
attenuator pressure to discharge
static pressure for final fan performance.
25
0.10
50 150 250 350 450
24 71 118 165 212
Airflow
Cfm
L/s
Pa In. wg LPxF 09SQ—ECM
125
0.50
Discharge Static Pressure
100
75
50
0.40
0.30
0.20
250 cfm min
(118 L/s)
LPCF and LPEF maximum
Minimum
1-row coil maximum
2-row coil maximum
25
0.10
200 300 400 500 600 700 800 900 1000 1100 Cfm
94 142 189 236 283 330 378 425 472 519 L/s
Airflow
LHP 8
VAV-PRC008-EN

Fan-Powered
Low-Height
Parallel
Performance
Data—Hot Water
Coil (I-P)
Fan Sizes 08SQ & 09SQ (I-P)
Water
Pressure
Airflow (Cfm)
Rows Gpm Drop (ft) 100 200 300 400 500 600 700 800 900
1-Row 0.5 0.80 7.73 10.43 12.20 13.50 14.51 15.33 16.03 16.63 17.15
Capacity 1.0 2.67 8.58 12.15 14.51 16.37 17.98 19.42 20.69 21.82 22.85
MBH 1.5 5.43 8.90 12.83 15.52 17.69 19.56 21.21 22.72 24.15 25.46
2.0 9.02 9.06 13.20 16.07 18.42 20.47 22.30 23.97 25.51 26.95
2.5 13.39 9.17 13.43 16.43 18.89 21.06 23.00 24.79 26.45 28.00
2-Row 1.0 0.89 9.36 15.49 19.69 22.72 25.00 26.79 28.23 29.41 30.41
Capacity 2.0 3.02 9.74 16.83 22.20 26.42 29.83 32.65 35.03 37.06 38.83
MBH 3.0 6.24 9.86 17.29 23.11 27.82 31.72 35.02 37.85 40.32 42.49
4.0 10.47 9.92 17.53 23.59 28.56 32.73 36.29 39.39 42.11 44.52
5.0 15.66 9.96 17.67 23.88 29.01 33.36 37.10 40.36 43.24 45.81
Fan Size 10SQ (I-P)
Water
Pressure
Airflow (Cfm)
Rows Gpm Drop (ft) 700 800 900 1000 1100 1200 1240
1-Row 0.7 1.51 18.46 19.31 20.07 20.75 21.37 21.93 22.14
Capacity 1.0 2.80 20.69 21.82 22.85 23.78 24.64 25.43 25.72
MBH 1.5 5.69 22.72 24.15 25.46 26.67 27.79 28.84 29.24
2.0 9.45 23.97 25.51 26.95 28.32 29.62 30.84 31.30
2.5 14.03 24.79 26.45 28.00 29.46 30.83 32.14 32.66
2-Row 1.5 1.85 32.51 34.20 35.65 36.90 38.01 38.98 39.34
Capacity 2.0 3.07 35.03 37.06 38.83 40.38 41.76 42.99 43.44
MBH 3.0 6.32 37.85 40.32 42.49 44.42 46.15 47.71 48.29
4.0 10.58 39.39 42.11 44.52 46.68 48.62 50.39 51.06
5.0 15.80 40.36 43.24 45.81 48.13 50.22 52.13 52.84
Water Coil Notes (I-P)
1. Fouling Factor = 0.0005.
2. The off-coil temperature of the hot water coil on parallel fan-powered units must not exceed 140°F when mounted
on plenum inlet.
3. The following equations may be used in calculating Leaving Air Temperature (LAT) and Water Temperature
Difference (WTD).
LAT = EAT +
MBH x 921.7
( Cfm ) WTD = EWT - LWT = ( 2 x MBH
Gpm )
4. Capacity based on 70°F entering air temperature and 180°F entering water temperature. Refer to correction factors
for different entering conditions.
Temperature Correction Factors for Water Pressure Drop (WPD)
Average Water Temperature 200 190 180 170 160 150 140 130 120 110
Correction Factor 0.970 0.985 1.000 1.020 1.030 1.050 1.080 1.100 1.130 1.150
Temperature Correction Factors for Coil Capacity (MBH)
Entering Water Minus Entering Air 40 50 60 70 80 90 100 110 120 130
Correction Factor 0.355 0.446 0.537 0.629 0.722 0.814 0.907 1.000 1.093 1.187
VAV-PRC008-EN LHP 9

Fan-Powered
Low-Height
Parallel
Performance
Data—Hot Water
Coil (SI)
Fan Sizes 08SQ & 09SQ (SI)
Water
Pressure
Airflow (L/s)
Rows L/s Drop (kPa) 47 94 142 189 236 283 330 378 425
1-Row 0.03 2.39 2.27 3.06 3.58 3.96 4.25 4.49 4.70 4.87 5.03
Capacity 0.06 7.98 2.51 3.56 4.25 4.80 5.27 5.69 6.06 6.40 6.70
kW 0.09 16.24 2.61 3.76 4.55 5.18 5.73 6.22 6.66 7.08 7.46
0.13 26.97 2.66 3.87 4.71 5.40 6.00 6.54 7.03 7.48 7.90
0.16 40.04 2.69 3.94 4.81 5.54 6.17 6.74 7.27 7.75 8.21
2-Row 0.06 2.65 2.74 4.54 5.77 6.66 7.33 7.85 8.27 8.62 8.91
Capacity 0.13 9.03 2.85 4.93 6.51 7.74 8.74 9.57 10.27 10.86 11.38
kW 0.19 18.65 2.89 5.07 6.77 8.15 9.30 10.26 11.09 11.82 12.45
0.25 31.29 2.91 5.14 6.91 8.37 9.59 10.64 11.54 12.34 13.05
0.32 46.82 2.92 5.18 7.00 8.50 9.78 10.87 11.83 12.67 13.43
Fan Size 10SQ (SI)
Water
Pressure
Airflow (L/s)
Rows L/s Drop (kPa) 330 378 425 472 519 566 585
1-Row 0.04 4.51 5.41 5.66 5.88 6.08 6.26 6.43 6.49
Capacity 0.06 8.37 6.06 6.40 6.70 6.97 7.22 7.45 7.54
kW 0.09 17.02 6.66 7.08 7.46 7.81 8.14 8.45 8.57
0.13 28.25 7.03 7.48 7.90 8.30 8.68 9.04 9.17
0.16 41.94 7.27 7.75 8.21 8.63 9.03 9.42 9.57
2-Row 0.09 5.53 9.53 10.02 10.45 10.82 11.14 11.42 11.53
Capacity 0.13 9.19 10.27 10.86 11.38 11.84 12.24 12.60 12.73
kW 0.19 18.89 11.09 11.82 12.45 13.02 13.52 13.98 14.15
0.25 31.61 11.54 12.34 13.05 13.68 14.25 14.77 14.96
0.32 47.22 11.83 12.67 13.43 14.10 14.72 15.28 15.49
Water Coil Notes (SI)
1. Fouling Factor = 0.0005.
2. The off-coil temperature of the hot water coil on parallel fan-powered units must not exceed 60°C when mounted
on plenum inlet.
3. The following equations may be used in calculating Leaving Air Temperature (LAT) and Water Temperature
Difference (WTD).
kW x 0.83
kW
LAT = EAT + ( L/s )
WTD = EWT - LWT = ( (4.19)L/s)
4. Capacity based on 21°C entering air temperature and 82°C entering water temperature. Refer to correction factors
for different entering conditions.
Temperature Correction Factors for Water Pressure Drop (kPa)
Average Water Temperature 93 88 82 77 71 66 60 54 49 43
Correction Factor 0.970 0.985 1.000 1.020 1.030 1.050 1.080 1.100 1.130 1.150
Temperature Correction Factors for Coil Capacity (kW)
Entering Water Minus Entering Air 22 27 33 38 44 50 55 61 67 72
Correction Factor 0.355 0.446 0.537 0.629 0.722 0.814 0.907 1.000 1.093 1.187
LHP 10
VAV-PRC008-EN

Fan-Powered
Low-Height
Parallel
Performance
Data—
Electrical Data
LPEF—Electric Coil kW Guidelines – Minimum to Maximum (PSC Motor Units)
Fan Single-Phase Voltage Three-Phase Voltage
Size Stages 120V 208V 240V 277V 347V 480V 208V 480V 600V
08SQ 1 0.5*–4.5* 0.5–7.0 0.5–7.0 0.5–7.0 0.5–7.0 0.5–7.0 0.5–7.0 1.0–7.0 1.5–7.0
2 0.5*–4.5* 0.5–7.0 0.5–7.0 1.0–7.0 1.0–7.0 1.0–7.0 1.0–7.0 2.0–7.0 3.0–7.0
3** — — — — — — — — —
09SQ 1 0.5*–4.5* 0.5–8.0 0.5–10.0 0.5–12.0 0.5–14.0 0.5–14.0 0.5–14.0 1.0–14.0 1.5–14.0
2 0.5*–4.5* 0.5–8.0 0.5–10.0 1.0–12.0 1.0–14.0 1.0–14.0 1.0–14.0 2.0–14.0 3.0–14.0
3** — — — — — — — — —
10SQ 1 0.5*–4.0* 0.5–8.0 0.5–9.0 0.5–12.0 0.5–14.0 0.5–14.0 1.0–13.0 1.0–14.0 1.5–12.0
2 0.5*–4.0* 0.5–8.0 0.5–9.0 1.0–12.0 1.0–14.0 1.0–14.0 1.0–13.0 2.0–14.0 3.0–12.0
3** — — — — — — — — —
*Special heater offering
** Three stages of electric heat available only with pneumatic controls.
LPEF–Electric Coil kW Guidelines – Minimum to Maximum (ECM Units)
Fan Single-Phase Voltage Three-Phase Voltage
Size Stages 120V * 208V 240V 277V 347V 480V 208V 480V 600V
08SQ 1 0.5*–5.0* 0.5–7.0 0.5–7.0 0.5–7.0 — 0.5–7.0 0.5–7.0 1.0–7.0 —
2 0.5*–5.0* 0.5–7.0 0.5–7.0 1.0–7.0 — 1.0–7.0 1.0–7.0 2.0–7.0 —
3 — — — — — — — — —
09SQ 1 0.5*–4.5* 0.5–8.0 0.5–9.0 0.5–12.0 — 0.5–14.0 0.5–14.0 1.0–14.0 —
2 0.5*–4.5* 0.5–8.0 0.5–9.0 1.0–12.0 — 1.0–14.0 1.0–14.0 2.0–14.0 —
3 — — — — — — — — —
*Special heater offering
Notes:
1. Coils available with 24 VAC magnetic or mercury contactors, load carrying P.E. switches, and P.E. switch with magnetic or mercury contractors.
2. Available kW increments are by 0.5 from 0.5 kW to 8.0 kW and by 1.0 kW from 9.0 to 14.0 kW.
3. Each stage will be equal in kW output.
4. All heaters contain an auto thermal cutout and a manual reset cutout.
5. The current amp draw for the heater elements is calculated by the formula below.
6. Only two stages of electric reheat available with Trane controls.
Fan Electrical Performance (PSC)
Maximum Fan Motor Amperage (FLA)
Fan Size HP 115 VAC 277 VAC 347 VAC
08SQ 1/3 5.5 2.5 1.8
09SQ 1/3 5.5 2.5 1.8
10SQ* 2 x 1/8 9.4 3.5 3.0
Notes:
1. Electric Heat Units - Units with Primary Voltage of 208/60/1, 208/
60/3 or 240/60/1 use 115 VAC fan motors.
2. Electric Heat Units - Units with Primary Voltage of 277/60/1,
480/60/1 or 480/60/3 use 277 VAC fan motors.
3. Electric Heat Units - Units with Primary Voltage of 347/60/1 or
575/60/3 use 347 VAC fan motors.
4. Values are for standard, single-speed, permanent split capacitor
type motors. Consult factory for non-standard motor
performance.
5. Motor amps for 10SQ are total amps for two motors.
Fan Electrical Performance (ECM)
Maximum Fan Motor Amperage (FLA)
Fan Size HP 115 VAC 277 VAC
08SQ 1/2 2.0 1.1
09SQ 1/2 6.7 3.6
Formulas
Minimum Circuit Ampacity (MCA) Equation
• MCA = (motor amps + heater amps) x 1.25
Maximum Overcurrent Protection (MOP) Equation
• MOP = (2.25 x motor amps) + heater amps
General Sizing Rules:
• If MOP = 15, then fuse size = 15
• If MOP = 19, then fuse size = 15 with one exception. If heater
amps x 1.25 > 15, then fuse size = 20.
• If MOP ≤ MCA, then choose next fuse size greater than MCA.
• Control fusing not applicable.
• Standard Fuse Sizes: 15, 20, 25, 30, 35, 40, 45, 50, and 60.
Useful formulas:
Cfm x ATD
kW =
3145
kW x 1000
3φamps =
Primary Voltage x √ 3
ATD =
kW x 3145
Cfm
kW = 1214 x L/s x ATD
1φamps =
ATD =
kW
1214 x L/s
kW x 1000
Primary Voltage
VAV-PRC008-EN LHP 11

Fan-Powered
Low-Height
Parallel
Performance
Data—
Electrical Data
Minimum Unit Electric
Heat Cfm Guidelines (PSC)
Unit
Cfm
kW 08SQ 09SQ 10SQ
0.5 173 440 720
1 173 440 720
1.5 173 440 720
2 173 440 720
2.5 173 440 720
3 173 440 720
3.5 202 440 720
4 232 440 720
4.5 261 440 720
5 290 440 720
5.5 319 440 720
6 349 440 720
6.5 378 440 720
7 407 440 720
7.5 — 468 720
8 — 496 720
9 — 552 720
10 — 608 720
11 — 664 720
12 — 720 720
13 — 776 720
14 — 832 —
Minimum Unit Electric
Heat L/s Guidelines (PSC)
Unit
L/s
kW 08SQ 09SQ 10SQ
0.5 82 208 340
1 82 208 340
1.5 82 208 340
2 82 208 340
2.5 82 208 340
3 82 208 340
3.5 95 208 340
4 109 208 340
4.5 123 208 340
5 137 208 340
5.5 151 208 340
6 164 208 340
6.5 178 208 340
7 192 208 340
7.5 — 221 340
8 — 234 340
9 — 261 340
10 — 287 340
11 — 313 340
12 — 340 340
13 — 366 340
14 — 393 —
Minimum Unit Electric
Heat Cfm Guidelines (ECM)
Unit Cfm
kW 08SQ 09SQ
0.5 188 490
1 188 490
1.5 188 490
2 188 490
2.5 188 490
3 188 490
3.5 220 490
4 251 490
4.5 283 490
5 314 490
5.5 346 490
6 377 490
6.5 409 490
7 440 490
7.5 — 514
8 — 539
9 — 588
10 — 637
11 — 685
12 — 734
13 — 783
14 — 832
Minimum Unit Electric
Heat L/s Guidelines (ECM)
Unit L/s
kW 08SQ 09SQ
0.5 89 231
1 89 231
1.5 89 231
2 89 231
2.5 89 231
3 89 231
3.5 104 231
4 118 231
4.5 133 231
5 148 231
5.5 163 231
6 178 231
6.5 193 231
7 208 231
7.5 — 243
8 — 254
9 — 277
10 — 300
11 — 323
12 — 347
13 — 370
14 — 393
LHP 12
VAV-PRC008-EN

Fan-Powered
Low-Height
Parallel
Performance
Data—
Acoustics
Discharge Sound Power (dB)
Discharge Sound Power (dB)
Fan Inlet 0.5" ∆Ps 1.0" ∆Ps 2.0" ∆Ps 3.0" ∆Ps
Size Size Cfm L/s 2 3 4 5 6 7 2 3 4 5 6 7 2 3 4 5 6 7 2 3 4 5 6 7
08SQ 5 150 71 50 46 43 39 32 29 53 49 48 45 38 38 53 50 49 47 44 46 55 52 51 49 47 50
200 94 53 49 46 42 36 31 56 52 50 47 40 39 57 54 52 50 46 47 58 55 54 52 49 51
250 118 57 52 48 45 40 33 58 55 52 48 42 40 60 58 55 53 48 48 61 59 57 54 51 52
300 142 60 54 50 48 43 37 61 58 54 50 45 42 64 60 58 55 50 48 64 62 60 57 54 54
350 165 62 57 53 50 46 41 64 60 56 53 49 44 66 63 60 57 51 49 68 66 63 61 58 55
08SQ 6 200 94 51 47 44 40 34 29 53 50 49 44 38 37 56 53 51 50 47 48 58 55 53 51 49 52
08SQ 280 132 55 51 48 44 40 33 57 54 53 48 44 40 60 57 55 53 50 48 62 59 57 55 52 52
350 165 58 55 52 48 44 37 60 58 56 52 48 42 63 60 58 56 53 49 65 62 60 58 55 53
430 203 62 60 56 52 50 42 63 62 59 56 54 46 66 64 62 59 56 50 68 66 64 61 58 54
500 236 66 63 60 56 53 45 66 65 62 59 57 49 68 67 65 62 60 53 70 69 67 64 62 56
08SQ 8 350 165 53 49 47 44 39 31 56 53 52 48 44 40 60 58 56 53 50 49 62 60 59 55 53 52
09SQ 500 236 56 53 51 48 44 36 60 57 55 52 48 43 64 62 60 57 54 51 66 64 63 59 57 54
600 283 59 56 53 50 47 39 62 59 58 54 51 45 66 65 63 60 57 53 68 67 65 62 59 56
800 378 63 61 58 56 52 44 66 64 62 59 56 49 70 69 67 64 62 56 73 72 70 68 64 59
900 425 65 63 60 58 55 47 68 66 63 61 58 51 72 70 68 66 63 57 75 73 72 70 67 61
09SQ 8x14 780 368 59 61 57 52 48 45 64 67 61 56 52 54 68 68 71 61 56 55 72 72 77 66 59 56
1100 519 61 62 60 54 52 48 65 67 65 59 56 55 71 70 74 64 61 58 74 74 79 68 63 59
1500 708 64 65 64 58 56 51 68 67 70 62 61 57 74 73 78 69 66 62 78 76 81 72 68 63
1800 850 66 67 67 61 59 53 70 69 73 65 63 58 76 74 79 71 68 63 78 76 81 73 70 65
10SQ 8x14 780 368 60 58 51 48 41 34 63 64 59 57 45 42 65 66 65 65 51 50 67 67 68 69 56 54
1170 552 — — — — — — 67 67 61 58 51 46 70 72 69 68 56 52 71 74 74 73 59 56
1560 736 — — — — — — — — — — — — 73 74 71 68 60 55 74 77 75 74 63 59
1800 850 — — — — — — — — — — — — 74 75 74 70 63 57 76 78 76 74 65 60
2000 944 — — — — — — — — — — — — 75 76 77 71 65 59 77 78 77 74 67 61
1. All data are measured in accordance with Industry Standard ARI 880-98.
2. All sound power levels, dB re: 10 -12 Watts.
3. Where ∆Ps is inlet static pressure minus discharge static pressure.
Radiated Sound Power (dB)
Radiated Sound Power (dB)
Fan Inlet 0.5" ∆Ps 1.0" ∆Ps 2.0" ∆Ps 3.0" ∆Ps
Size Size Cfm L/s 2 3 4 5 6 7 2 3 4 5 6 7 2 3 4 5 6 7 2 3 4 5 6 7
08SQ 5 150 71 53 44 38 33 28 21 54 45 40 36 31 25 54 47 42 40 38 34 56 49 45 46 42 38
200 94 55 46 41 35 29 21 56 48 42 37 32 25 57 50 45 42 38 34 58 51 47 46 42 38
250 118 56 49 44 36 30 22 59 50 44 38 33 26 60 52 48 43 39 34 61 53 48 47 43 38
300 142 59 50 45 38 31 24 62 52 47 40 34 28 62 54 50 45 40 34 63 55 50 48 44 38
350 165 62 51 46 39 33 26 65 55 50 43 36 30 65 56 51 47 41 35 65 57 53 50 45 39
08SQ 6 200 94 53 45 40 33 27 21 56 48 43 35 29 22 57 48 44 40 37 32 58 50 45 45 42 37
09SQ 280 132 54 46 40 33 27 22 57 50 45 37 30 24 59 51 47 42 37 33 61 53 48 46 42 37
350 165 54 46 41 34 28 22 58 51 46 38 31 25 62 54 49 44 38 34 63 55 50 47 43 38
430 203 56 49 43 36 30 25 60 53 48 40 33 27 64 57 52 46 39 35 66 58 53 49 43 38
500 236 59 53 47 40 34 29 62 55 50 42 35 30 66 58 53 47 41 36 68 60 55 51 44 39
08SQ 8 350 165 57 50 45 38 34 23 59 54 46 40 34 26 61 55 48 43 39 35 63 56 50 47 44 37
09SQ 500 236 60 53 47 40 34 24 62 56 49 42 36 28 65 58 51 46 41 35 67 60 54 50 45 38
600 283 62 54 49 41 34 24 65 58 51 44 37 29 68 60 54 47 42 35 70 62 56 51 46 38
800 378 65 57 52 44 36 26 69 61 54 46 40 32 73 64 58 50 44 36 74 66 60 54 48 40
900 425 66 58 53 45 37 28 71 63 56 48 41 33 75 66 60 52 45 37 76 67 62 55 48 40
09SQ 8x14 780 368 62 59 55 48 40 31 66 61 57 51 44 38 70 63 61 53 48 43 72 66 63 55 51 46
1100 519 64 60 56 47 40 32 68 63 60 52 45 38 72 66 65 57 52 45 74 68 66 59 54 48
1500 708 68 62 58 47 39 32 71 65 64 53 46 39 75 69 70 62 56 47 77 72 70 63 58 50
1800 850 71 63 59 47 39 32 73 67 68 54 47 39 77 71 72 62 56 47 79 73 73 64 59 50
10SQ 8x14 780 368 60 55 47 41 32 28 63 61 55 48 38 34 66 63 60 55 45 41 69 66 64 59 50 45
1170 552 — — — — — — 68 65 57 50 41 39 71 69 66 59 48 45 74 74 69 64 53 48
1560 736 — — — — — — — — — — — — 74 72 66 59 49 47 76 74 71 65 54 50
1800 850 — — — — — — — — — — — — 75 74 68 61 51 49 77 76 72 65 55 51
2000 944 — — — — — — — — — — — — 76 75 70 62 52 50 78 77 72 65 55 52
1. All data are measured in accordance with Industry Standard ARI 880-98.
2. All sound power levels, dB re: 10-12 Watts.
3. Where ∆Ps is inlet static pressure minus discharge static pressure.
VAV-PRC008-EN LHP 13

Fan-Powered
Low-Height
Parallel
Performance
Data—
Acoustics
Fan Only Sound Power
Outlet Discharge Sound Power (dB) Radiated Sound Power (dB)
Fan Static Octave Bands Octave Bands
Size (in. wg) Cfm L/s 2 3 4 5 6 7 2 3 4 5 6 7
08SQ 175 83 56 51 50 47 41 34 65 56 57 50 41 35
0.25 250 118 59 54 54 50 44 40 68 58 60 53 44 38
(63 Pa) 320 151 62 56 57 53 48 45 72 61 63 56 48 42
400 189 66 60 60 58 54 51 75 64 65 61 52 47
470 222 69 63 64 62 58 56 77 67 69 64 56 50
09SQ 400 189 65 59 57 54 48 44 69 65 62 56 46 38
0.25 500 236 66 60 58 56 49 46 70 66 64 58 48 40
(63 Pa) 700 330 69 63 62 61 54 53 72 69 68 64 54 46
800 378 71 65 64 64 57 56 74 71 70 67 57 49
900 425 73 68 68 67 61 61 77 74 72 69 60 53
10SQ 700 330 62 57 55 51 45 40 67 61 57 54 49 44
0.25 840 396 64 58 57 53 48 43 68 63 58 55 50 46
(63 Pa) 980 463 65 61 58 56 51 47 70 65 60 57 53 50
1200 566 69 65 63 61 56 54 73 69 64 61 57 55
1400 661 72 69 66 65 60 57 76 72 67 64 60 58
1. All data are measured in accordance with Industry Standard ARI 880-98.
2. All sound power levels, dB re: 10 -12 Watts.
Sound Noise Criteria (NC)
Valve Only
Discharge
Radiated
NC Level (∆Ps) NC Level (∆Ps)
Fan Inlet 0.5" 1.0" 2.0" 3.0" 0.5" 1.0" 2.0" 3.0"
Size Size Cfm L/s (127 Pa) (254 Pa) (508 Pa) (762 Pa) (127 Pa) (254 Pa) (508 Pa) (762 Pa)
08SQ 5 150 71 — — — — — 15 15 19
200 94 — — — 15 16 17 19 21
250 118 — — 15 16 17 21 22 24
300 142 — 15 17 20 21 25 25 26
350 165 — 17 21 25 25 29 29 29
08SQ 6 200 94 — — — 16 — 17 19 20
09SQ 280 132 — — — 16 15 19 21 24
350 165 — 15 17 20 15 20 25 26
430 203 17 20 22 25 17 22 27 30
500 236 21 24 26 29 21 25 30 32
08SQ 8 350 165 — — 15 17 19 22 24 26
09SQ 500 236 — — 20 22 22 25 29 31
600 283 — 16 24 26 25 29 32 35
800 378 19 22 29 32 29 34 39 40
900 425 21 25 30 34 30 36 41 42
09SQ 8x14 780 368 17 25 26 31 30 32 36 38
1100 519 19 25 29 34 31 35 40 41
1500 708 22 25 32 36 33 39 46 46
1800 850 25 27 34 36 36 44 48 49
10SQ 8x14 780 368 21 24 25 24 31 35 39
1170 552 25 31 34 36 41 46
1560 736 34 37 44 47
1800 850 35 38 46 49
2000 944 36 38 47 50
1. "—" represents NC Values below NC15.
2. Where ∆Ps is inlet static pressure minus discharge static pressure.
ARI 885-98-02add DISCHARGE TRANSFER FUNCTION ASSUMPTIONS:
Octave Band
2 3 4 5 6 7
Medium Box (300-700 CFM) -27 -29 -40 -51 -53 -39
Large Box (> 700 CFM) -29 -30 -41 -51 -52 -39
Subtract from terminal unit sound power to determine discharge sound
pressure in the space.
ARI 885-98 RADIATED TRANSFER FUNCTION ASSUMPTIONS:
Octave Band
2 3 4 5 6 7
Type 2- Mineral Fiber Insulation -18 -19 -20 -26 -31 -36
Total dB reduction -18 -19 -20 -26 -31 -36
Subtract from terminal unit sound power to determine radiated sound
pressure in the space.
LHP 14
VAV-PRC008-EN

Fan-Powered
Low-Height
Parallel
Performance
Data—
Acoustics
Sound Noise Criteria (NC)
Fan Only
Radiated
Fan Outlet Discharge NC/NC with
Size Cfm L/s Static NC Level Attenuator
08SQ 175 83 0.25 — 32/31
250 118 0.25 — 35/ *
320 151 0.25 — 38/ *
400 189 0.25 19 41/ *
470 222 0.25 22 45/ *
09SQ 400 189 0.25 15 37/36
500 236 0.25 16 39/37
700 330 0.25 20 44/40
800 378 0.25 22 46/42
900 425 0.25 26 48/46
10SQ 700 330 0.25 — 32/ *
840 396 0.25 — 34/ *
980 463 0.25 17 36/ *
1200 566 0.25 22 40/ *
1400 661 0.25 27 44/ *
*Attenuator not recommended
Notes:
1. “–“ represents NC levels below NC 15.
2. NC Values are calculated using current Industry Standard ARI
885, 2002 addendum to revision 1998. Radiated Transfer Function
obtained from Appendix E, Type 2Mineral Fiber Insulation.
ARI 885-98-02add DISCHARGE TRANSFER FUNCTION ASSUMPTIONS:
Octave Band
2 3 4 5 6 7
Small Box (< 300 CFM) -24 -28 -39 -53 -59 -40
Medium Box (300-700 CFM) -27 -29 -40 -51 -53 -39
Large Box (> 700 CFM) -29 -30 -41 -51 -52 -39
Subtract from terminal unit sound power to determine discharge sound
pressure in the space.
ARI 885-98 RADIATED TRANSFER FUNCTION ASSUMPTIONS:
Octave Band
2 3 4 5 6 7
Type 2- Mineral Fiber Insulation -18 -19 -20 -26 -31 -36
Total dB reduction -18 -19 -20 -26 -31 -36
Subtract from terminal unit sound power to determine radiated sound
pressure in the space.
Discharge Sound Power (dB)
Valve Only
ARI Conditions
Fan Inlet 1.5" Inlet Pressure (381 Pa)
Size Size Cfm L/s 2 3 4 5 6 7
08SQ 5 250 118 60 57 55 51 45 44
08SQ 6 400 189 64 62 59 56 54 47
09SQ
08SQ 8 700 330 67 65 63 60 57 51
09SQ
09SQ 8x14 1560 736 70 71 73 66 63 60
10SQ 8x14 1560 736 71 72 69 65 59 53
Discharge Sound Power (dB)
Fan Only
ARI Conditions
Fan Inlet
Size Size Cfm L/s 2 3 4 5 6 7
08SQ 5, 6, 8 460 217 68 62 63 62 58 56
09SQ 6, 8, 8x14 900 425 73 68 68 67 61 61
10SQ 8, 8x14 1420 670 72 69 66 65 60 57
Notes:
1. All sound data rated in accordance with current Industry
Standard ARI 880, version 1998.
2. All sound power levels, dB re: 10-12 Watts.
Radiated Sound Power (dB)
Valve Only
ARI Conditions
Fan Inlet 1.5" Inlet Pressure (381 Pa)
Size Size Cfm L/s 2 3 4 5 6 7
08SQ 5 250 118 59 50 46 41 36 32
08SQ 6 400 189 62 55 50 42 36 31
09SQ
08SQ 8 700 330 69 61 55 47 40 33
09SQ
09SQ 8x14 1560 736 73 68 67 58 51 43
10SQ 8x14 1560 736 73 71 64 56 47 46
Radiated Sound Power (dB)
Fan Only
ARI Conditions
Fan Inlet
Size Size Cfm L/s 2 3 4 5 6 7
08SQ 5, 6, 8 460 217 76 66 69 63 55 50
09SQ 6, 8, 8x14 900 425 77 74 72 69 60 53
10SQ 8, 8x14 1420 670 76 72 67 64 60 58
VAV-PRC008-EN LHP 15

Fan-Powered
Low-Height
Parallel
Performance
Data—
Acoustics
Inlet Attenuator Appurtenance Effects
(Fan Noise Only)
Discharge Sound Effect* (dB) Radiated Sound Effect* (dB)
Fan 2 3 4 5 6 7 2 3 4 5 6 7
Matte-faced and foil-faced insulation**
08SQ, 09SQ 2 3 4 5 5 6 2 0 -4 -8 -7 -7
Closed-cell insulation
08SQ, 09SQ 2 3 4 5 4 5 2 1 2 -3 -4 -4
* Add to sound power, a negative effect represents a sound reduction, a positive effect represents a
sound increase
** Note: Attenuators on double-wall units contain foil-faced insulation.
Cabinet Lining Appurtenance Effects
(Fan Noise and Valve Noise)
Discharge Sound Effect* (dB) Radiated Sound Effect* (dB)
Fan 2 3 4 5 6 7 2 3 4 5 6 7
Solid double-wall
08SQ, 09SQ 1 0 2 3 4 6 2 1 2 5 9 13
Closed-cell insulation
08SQ, 09SQ 2 1 3 2 2 2 2 2 4 5 5 8
*Add to sound power, a negative effect represents a sound reduction, a positive effect represents a
sound increase
Heating Coil Appurtenance Effects
Discharge Sound Effect* (dB) Radiated Sound Effect* (dB)
Fan 2 3 4 5 6 7 2 3 4 5 6 7
Hot Water Coil (Fan Noise)
08SQ, 09SQ 3 3 4 5 4 5 2 2 3 3 3 4
Electric Heat
08SQ, 09SQ 0 -1 0 1 1 3 1 1 1 2 2 3
*Add to sound power, a negative effect represents a sound reduction, a positive effect represents a
sound increase.
LHP 16
VAV-PRC008-EN

Fan-Powered
Low-Height
Parallel
Dimensional
Data
LOW-HEIGHT PARALLEL COOLING (LPCF) FAN SIZES 08SQ & 09SQ
INLET SIZE
FAN
INLET SIZE
AVAILABILITY AVAILABILITY
SIZE NOMINAL Ø (INCHES) NOMINAL Ø (mm)
H
W
L
08SQ
09SQ
09SQ
5, 6, 8
6, 8
8 x 14
127, 152, 203
152, 203
203 x 356
11.00" (279 mm) 40.00" (1016 mm) 30.00" (762 mm)
DISCHARGE DIMENSIONS
A
B
19.25" (489 mm) 9.5" (241 mm)
D
4.00" (102 mm)
3.25" (83 mm)
UNIT WT
WT LBS
(kg)
69 (31.3)
74 (33.6)
83 (37.7)
nal Attenuator
eld Installed
5.
Actuator, Controller and
Fan Controls located in this area
5.
Actuator, Controller and
Fan Controls located in this area
32.00"
(813 mm)
17.50"
(445 mm)
D
Valve 5"
6.50"
(165 mm)
Primary
Airflow
4.00
(102 mm)
Optional Attenuator
Field Installed
Airflow
Plenum Inlet
18.00"
(457 mm)
Rectangular Damper
8" x 14"
(203 mm X 356 mm)
Rectangular Damper Detail
5.
Actuator, Controller and
Fan Controls located in Enclosure
5.00"
(127 mm)
7.
L
Fan Size
Filter Size
Attn Wt
Wt. Lbs.
(kg)
08SQ
09SQ
10" x 20" x 1"
(254 mm x 508 mm x 25 mm)
10 (4.5)
Airflow
Discharge Outlet
TOP VIEW
NOTES:
W
1. Allow a minimum 6" (152 mm) plenum inlet clearance for unducted
installations.
2. Flanged discharge outlet accepts up to 1" (25 mm) duct flange.
3. Bottom Access panel standard.
H
10.50"
(267 mm)
B
4. Air valve centered between top and bottom panel.
5. Control box enclosure provided with all control types.
6. All high & low voltage controls have same-side NEC jumpback
clearance. (Left-hand shown, right-hand/mirror image optional.)
A
7. Flange adds 2" to width and length of unit.
DISCHARGE VIEW
VAV-PRC008-EN LHP 17

Fan-Powered
Low-Height
Parallel
Dimensional
Data
LOW-HEIGHT PARALLEL COOLING (LPCF) FAN SIZE 10SQ
FAN
SIZE
10SQ
10SQ
INLET SIZE
AVAILABILITY
NOMINAL Ø (INCHES)
8
8 x 14
INLET SIZE
DISCHARGE DIMENSIONS
AVAILABILITY H
W
L
NOMINAL Ø (mm)
A
B
203 11.50" (292 mm) 40.00" (1016 mm) 50.00" (1270 mm) 19.25" (489 mm) 10.00" (254 mm)
203 x 356
UNIT WT
D WT LBS
(kg)
4.00" (102 mm) 90 (41)
3.25" (83 mm) 92 (42)
4.
6.
Actuator, Controller and
Fan Controls located in this area
20.00"
20.00"
(508 mm) (508 mm)
Flow Ring
tubing
D
Primary
Airflow
Rectangular Damper
8" x 14"
(203 mm X 356 mm)
Air
4.00
(102 mm)
Rectangular Damper Detail
18.875" Max.
(479 mm)
4.
6.
Actuator, Controller and
Fan Controls located in this area
L
6.
Fan Size
Filter Size
Airflow
Discharge Outlet
TOP VIEW
10SQ
10" x 20" x 1"
(254 mm x 508 mm x 25 mm)
5.50" Max.
(140 mm)
W
NOTES:
1. Allow a minimum 6" (152 mm) plenum inlet clearance for unducted installations.
2. Flanged discharge outlet accepts up to a 1" (25 mm) duct flange.
3. Bottom Access panel standard.
4. See Installation Documents for exact hanger bracket location.
5. Air valve centered between top and bottom panel.
6. Maximum dimensions for controls area shown. Configurations and types of
control boxes vary according to control type selected. See "Enclosure Details"
for specific layout ỵ
B
11.30" Max.
(287 mm)
H
6.
A
DISCHARGE VIEW
LHP 18
VAV-PRC008-EN

Fan-Powered
Low-Height
Parallel
Dimensional
Data
LOW-HEIGHT PARALLEL HOT WATER (LPWF) FAN SIZES 08SQ & 09SQ
INLET SIZE
FAN
INLET SIZE
DISCHARGE DIMENSIONS
AVAILABILITY
SIZE
H
W
L
NOMINAL Ø (INCHES) NOMINAL Ø (mm)
A
B
08SQ 5, 6, 8
127, 152, 203 11.00" (279 mm) 40.00" (1016 mm) 30.00" (762 mm) 19.25" (483 mm) 9.50" (241 mm)
09SQ 6, 8 152, 203
09SQ 8 x 14
203 x 356
UNIT WT
D WT LBS
(kg)
98 (44.5)
103 (46.7)
3.25" (83 mm) 112 (50.8)
Optional Attenuator
Field Installed
5.
Actuator, Controller and
Fan Controls located in this area
5.
Actuator, Controller and
Fan Controls located in this area
32.00"
(813 mm)
20.00"
(508 mm)
6.80"
(173 mm)
D
Valve 5"
6.50"
(165 mm)
Primary
Airflow
Optional Attenuator
Field Installed
Airflow
Plenum Inlet
18.00"
(457 mm)
Rectangular Damper
8" x 14"
(203 mm x 356 mm)
Rectangular Damper Detail
17.50"
(445 mm)
4.00
5.
Actuator, Controller and
Fan Controls located in Enclosure
5.00"
(127 mm)
L
Fan Size
08SQ
09SQ
Filter Size
10" x 20" x 1"
(254 mm x 508 mm x 25 mm)
Attn Wt
Wt Lbs
(kg)
10 (4.5)
7.
Airflow
Discharge Outlet
W
TOP VIEW
NOTES:
1. Allow a minimum 6" (152 mm) plenum inlet clearance for
unducted installations.
2. Flanged discharge outlet accepts up to a 1" (25 mm) duct flange.
3. Bottom Access panel standard.
4. Air valve centered between top and bottom panel.
5. Control box enclosure provided with all control types.
6. All high & low voltage controls have same-side NEC jumpback
clearance. (Left-hand shown, right-hand/mirror image optional.)
H
10.50"
B
7. Flange adds 2" to width and length of unit.
A
DISCHARGE VIEW
VAV-PRC008-EN LHP 19

Fan-Powered
Low-Height
Parallel
Dimensional
Data
LOW-HEIGHT PARALLEL HOT WATER (LPWF) FAN SIZE 10SQ
FAN
SIZE
10SQ
10SQ
INLET SIZE
AVAILABILITY
NOMINAL Ø (INCHES)
8
8 X 14
INLET SIZE
AVAILABILITY
NOMINAL Ø (mm)
203
203 X 356
H
11.50" (292 mm)
W
40.00" (1016 mm)
L
50.00" (1270 mm)
DISCHARGE DIMENSIONS
A
B
19.25" (489 mm) 10.00" (254 mm)
C
4.00" (102mm)
D
4.00" (102mm)
3.25" (83mm)
UNIT WT
WT LBS
(kg)
99 (45)
101 (46)
5.
20.00"
(508 mm)
20.00"
(508 mm)
7.
Actuator, Controller and
Fan Controls located in this area
Flow Ring
tubing
D
Primary
Airflow
Air
Valve
C
Water
Coil
6.30"
(160 mm)
Coil
Connection
18.875" Max.
(479 mm)
5.
Rectangular Damper
8" x 14"
(203 mm X 356 mm)
Rectangular Damper Detail
7.
L
7.
Actuator, Controller and
Fan Controls located in this area
Fan Size
Filter Size
10SQ
10" x 20" x 1"
(254 mm x 508 mm x 25 mm)
Airflow
Discharge Outlet
TOP VIEW
NOTES:
5.50" Max.
(140 mm)
W
1. Coil furnished with female sweat connections.
2. Allow a minimum 6" (152 mm) plenum inlet clearance for
unducted installations.
3. Flanged discharge outlet accepts up to a 1" (25 mm)
duct flange.
4. Bottom Access panel standard.
B
11.30" Max.
(287 mm)
H
5. See Installation Documents for exact hanger bracket location.
6. Air valve centered between top and bottom panel.
9.
A
7. Maximum dimensions for controls area shown. Configurations
and types of control boxes vary according to control type
selected. See "Enclosure Details" for specific layout.
DISCHARGE VIEW
LHP 20
VAV-PRC008-EN

Fan-Powered
Low-Height
Parallel
Dimensional
Data
PARALLEL LOW-HEIGHT HOT WATER (LPWF) COIL ON DISCHARGE
FAN SIZES 08SQ & 09SQ
FAN
SIZE
08SQ
09SQ
09SQ
INLET SIZE
AVAILABILITY
NOMINAL Ø (INCHES)
INLET SIZE
AVAILABILITY
NOMINAL Ø (mm)
5, 6, 8
127, 152, 203
6, 8 152, 203
8 X 14
203 X 356
H
11.00" (279 mm)
W
40.00" (1016 mm)
L
30.00" (762 mm)
DISCHARGE DIMENSIONS
A
20.00" (508 mm)
B
10.00" (254 mm)
UNIT WT
D WT LBS
(kg)
4.00" (102 mm) 98 (44.5)
103 (46.7)
3.25" (83 mm) 112 (50.8)
ptional Attenuator
5.
Actuator, Controller and
Fan Controls located in this area
5.
Actuator, Controller and
Fan Controls located in this area
32.00"
(813 mm)
D
Primary
Airflow
Valve 5"
6.50"
(165 mm)
Optional Attenuator
Field Installed
Airflow
Plenum Inlet
18.00"
(457 mm)
Rectangular Damper
8" x 14"
(203 mm X 356 mm)
Rectangular Damper Detail
17.50"
(445 mm)
4.00
5.
Actuator, Controller and
Fan Controls located in Enclosure
L
Fan Size
Filter Size
Attn Wt
Wt Lbs
(kg)
5.00"
(127 mm)
7.
08SQ
09SQ
10" x 20" x 1"
(254 mm x 508 mm x 25 mm)
10 (4.5)
6.80"
(173 mm)
NOTES:
20.00"
(508 mm)
Airflow
Discharge Outlet
TOP VIEW
1. Allow a minimum 6" (152 mm) plenum inlet clearance for
unducted installations.
2. Flanged discharge outlet accepts up to a 1" (25 mm) duct flange.
3. Bottom Access panel standard.
W
4. Air valve centered between top and bottom panel.
5. Control box enclosure provided with all control types.
H
10.50"
B
6. All high & low voltage controls have same-side NEC jumpback clearance.
(Left-hand shown, right-hand/mirror image optional.)
7. Flange adds 2" to width and length of unit.
A
DISCHARGE VIEW
VAV-PRC008-EN LHP 21

Fan-Powered
Low-Height
Parallel
Dimensional
Data
PARALLEL LOW HEIGHT HOT WATER (LPWF) COIL ON DISCHARGE FAN SIZE 10SQ
FAN
SIZE
10SQ
10SQ
INLET SIZE
AVAILABILITY
NOMINAL Ø (INCHES)
8
8 X 14
INLET SIZE
AVAILABILITY
NOMINAL Ø (mm)
203
203 X 356
H
11.50" (292 mm)
W
40.00" (1016 mm)
L
50.00" (1270 mm)
DISCHARGE DIMENSIONS
A
B
20.00" (508 mm) 10.00" (254 mm)
C
4.00" (102 mm)
D
4.00" (102 mm)
3.25" (83 mm)
UNIT WT
WT LBS
(kg)
99 (45)
101 (46)
5.
D
20.00"
(508 mm)
20.00"
(508 mm)
7.
Actuator, Controller and
Fan Controls located in this area
Flow Ring
tubing
Primary
Airflow
Air
Valve
C
18.875" Max.
(479 mm)
5.
Rectangular Damper
8" x 14"
(203 mm X 356 mm)
Rectangular Damper Detail
7.
L
7.
Actuator, Controller and
Fan Controls located in this area
Fan Size
Filter Size
6.30"
(160 mm)
Coil
Water
10SQ
10" x 20" x 1"
(254 mm x 508 mm x 25 mm)
20.00"
(508 mm)
Connection
Coil
TOP VIEW
NOTES:
5.50" Max.
(140 mm)
Airflow
Discharge Outlet
W
1. Coil furnished with female sweat connections.
2. Allow a minimum 6" (152 mm) plenum inlet clearance for
unducted installations.
3. Flanged discharge outlet accepts up to a 1" (25 mm) duct flange.
4. Bottom Access panel standard.
B
11.30" Max.
(287 mm)
H
5. See Installation Documents for exact hanger bracket location.
6. Air valve centered between top and bottom panel.
9.
A
7. Maximum dimensions for controls area shown. Configurations
and types of control boxes vary according to control type selected.
See "Enclosure Details" for specific layout.
DISCHARGE VIEW
LHP 22
VAV-PRC008-EN

Fan-Powered
Low-Height
Parallel
Dimensional
Data
COIL INFORMATION FOR LOW-HEIGHT PARALLEL 1-ROW COIL
SIZE
INLET/FAN
10SQ
COIL
CONNECTION
1-ROW
.375" (10 mm) O.D.
A
B
L
H
9.00" (229 mm) 2.80" (71 mm) 20.00" (508 mm) 10.00" (254 mm)
L
7.40"
(188 mm)
H
OUTLET
A
AIR FLOW
INLET
B
.40"
(10 mm)
FAN SIZE
INTERNAL
VOLUME
GAL (L)
OPERATING
WEIGHT
LBS (KG)
10SQ
0.07 (.27) 9.7 (4.4)
NOTES:
1. Location of coil connections is determined by facing air stream. R.H. Coil connections shown,
L.H. not available.
2. Coil furnished with stub sweat connections.
VAV-PRC008-EN LHP 23

Fan-Powered
Low-Height
Parallel
Dimensional
Data
COIL INFORMATION FOR LOW-HEIGHT PARALLEL 2-ROW COIL
FAN
SIZE
COIL
CONNECTION
2 ROW
A
B
L
H
10SQ
.875" (22 mm) O.D.
6.20" (157 mm) 2.18" (55 mm)
20.00" (508 mm)
10.00" (254 mm)
L
7.40"
(188 mm)
.85"
(22 mm)
H
OUTLET
A
AIR FLOW
INLET
1.97"
(50 mm)
B
2.00"
(51 mm)
FAN SIZE
10SQ
INTERNAL
VOLUME
GAL (L)
OPERATING
WEIGHT
LBS (KG)
0.16 (.61) 13.7 (6.2)
NOTES:
1. Location of coil connections is determined by facing air stream. R.H. Coil connections shown.
L.H. not available.
2. Coil furnished with female sweat connections.
LHP 24
VAV-PRC008-EN

Fan-Powered
Low-Height
Parallel
Dimensional
Data
LOW-HEIGHT PARALLEL ELECTRIC HEAT (LPEF) FAN SIZES 08SQ & 09SQ
INLET SIZE
FAN
INLET SIZE
DISCHARGE DIMENSIONS
UNIT WT
AVAILABILITY AVAILABILITY
SIZE
H
W
L
D WT LBS
NOMINAL Ø (INCHES) NOMINAL Ø (mm)
A
B
(kg)
08SQ
09SQ
09SQ
5, 6, 8
6, 8
8 x 14
127, 152, 203
152, 203
203 x 356
11.00" (279 mm) 40.00" (1016 mm) 30.00" (762 mm) 19.00" (483 mm) 9.50" (241 mm) 4.00" (102 mm) 104 (47.2)
109 (49.4)
3.25" (83 mm) 118 (53.5)
al Attenuator
Installed
5.
Actuator, Controller and
Fan Controls located in Enclosure
5.
Actuator, Controller and
Fan Controls located in Enclosure
32.00"
(813 mm)
D
Primary
Airflow
Valve 5"
6.50"
(165 mm)
Optional Attenuator
Field Installed
Airflow
Plenum Inlet
18.00"
(457 mm)
4.00
Rectangular Damper
8" x 14"
(203 mm X 356 mm)
17.50"
(445 mm)
Rectangular Damper Detail
5.00"
(127 mm)
L
5.
Actuator, Controller and
Fan Controls located in Enclosure
20.00"
(508 mm)
Terminal Box
Heater
Airflow
Discharge Outlet
6.00"
(152 mm)
7.
TOP VIEW
Fan Size
08SQ
09SQ
Filter Size
10" x 20 " x 1"
(254 mm x 508 mm x 25 mm)
Atten Wt
Lbs
(kg)
10 (4.5)
H
10.50"
(267 mm)
W
B
NOTES:
1. Allow a minimum 6" (152 mm) plenum inlet clearance for unducted installations.
2. Flanged discharge outlet accepts up to a 1" (25 mm) duct flange.
3. Bottom Access panel standard.
4. Air valve centered between top and bottom panel.
5. Control box enclosure provided with all control types.
6. All high & low voltage controls have same-side NEC jumpback clearance. (Left-hand
shown, right-hand/mirror image optional.)
7. Flange adds 2" to width and length of unit.
A
DISCHARGE VIEW
VAV-PRC008-EN LHP 25

Fan-Powered
Low-Height
Parallel
Dimensional
Data
LOW-HEIGHT PARALLEL ELECTRIC (LPEF) FAN SIZE 10SQ
LHP 26
VAV-PRC008-EN

Fan-Powered
Low-Height
Parallel
Mechanical
Specifications
MODELS LPCF, LPWF,
and LPEF
Low-height parallel fan-powered
terminal units.
LPCF – Cooling Only
LPWF – With Hot Water Coil
LPEF – With Electric Coil
CASING
22-gage galvanized steel. Hanger
brackets, bottom access, and plenum
inlet filter are provided as standard.
AGENCY LISTING
The unit is UL and Canadian UL
Listed as a room air terminal unit.
ARI 880 Certified.
INSULATION
1/2" (12.7 mm) Matte-faced
Insulation—The interior surface of
the unit casing is acoustically and
thermally lined with ½-inch, 1.5 lb/ft 3
(12.7 mm, 24.0 kg/m 3 ) composite
density glass fiber with a high-density
facing. The insulation R-Value is 1.9. The
insulation is UL listed and meets NFPA-
90A and
UL 181 standards. There are no
exposed edges of insulation (complete
metal encapsulation).
1" (25.4 mm) Matte-faced
Insulation—The interior surface of
the unit casing is acoustically and
thermally lined with 1-inch, 1.0 lb/ft 3
(25.4 mm, 16.0 kg/m 3 ) composite
density glass fiber with a high-density
facing. The insulation R-Value is 3.85.
The insulation is UL listed and meets
NFPA-90A and UL 181 standards. There
are no exposed edges of insulation
(complete metal encapsulation).
1/2" (12.7 mm) Foil-faced
Insulation—The interior surface of
the unit casing is acoustically and
thermally lined with ½-inch, 1.5 lb/ft 3
(12.7 mm, 24.0 kg/m 3 ) density glass
fiber with foil facing. The insulation
R-Value is 2.1. The insulation is UL
listed and meets NFPA-90A and UL 181
standards as well as bacteriological
standard ASTM C 665. There are no
exposed edges of insulation (complete
metal encapsulation).
1" (25.4 mm) Foil-faced
Insulation—The interior surface of
the unit casing is acoustically and
thermally lined with 1-inch, 1.5 lb/ft 3
(25.4 mm, 24.0 kg/m 3 ) density glass
fiber with foil facing. The insulation
R-Value is 4.1. The insulation is UL
listed and meets NFPA-90A and UL 181
standards as well as bacteriological
standard ASTM C 665. There are no
exposed edges of insulation (complete
metal encapsulation).
1" (25.4 mm) Double-wall
Insulation—The interior surface of
the unit casing is acoustically and
thermally lined with a 1-inch, 1.0 lb./ft 3
(25.4 mm, 16.0 kg/m 3 ) composite
density glass fiber with high-density
facing. The insulation R-value is 3.8.
The insulation is UL listed and meets
NFPA-90A and UL 181 standards. The
insulation is covered by an interior
liner made of 26-gage galvanized
steel. All wire penetrations are covered
by grommets. There are no exposed
edges of insulation (complete metal
encapsulation).
3/8" (9.5 mm) Closed-cell
Insulation—The interior surface of
the unit casing is acoustically and
thermally lined with 3/8-inch, 4.4 lb/ft 3
(9.5 mm, 70.0 kg/m 3 ) closed-cell
insulation. The insulation is UL
recognized and meets NFPA-90A and
UL 181 standards. The insulation has
an R-Value of 1.4. There are no exposed
edges of insulation (complete metal
encapsulation).
PRIMARY AIR VALVE
Air Valve Round—The primary air
inlet connection is an 18-gage
galvanized steel cylinder sized to fit
standard round duct. A multiple-point,
averaging flow sensing ring is
provided with balancing taps for
measuring +/-5% of unit cataloged
airflow. An airflow-versus-pressure
differential calibration chart is provided.
The damper blade is constructed of a
closed-cell foam seal that is
mechanically locked between two
22-gage galvanized steel disks. The
damper blade assembly is connected
to a cast zinc shaft supported by selflubricating
bearings. The shaft is cast
with a damper position indicator. The
valve assembly includes a mechanical
stop to prevent over-stroking. At 4 in.
wg, air valve leakage does not exceed
1% of cataloged airflow.
Air Valve Rectangular—Inlet collar is
constructed of 22-gage galvanized steel
sized to fit standard rectangular duct.
An integral multiple-point, averaging
flow-sensing ring provides primary
airflow measurement within +/-5% of
unit cataloged airflow. Damper is
22-gage galvanized steel. The damper
blade assembly is connected to a solid
metal shaft supported by selflubricating
bearings. The shaft is cast
with a damper position indicator. The
valve assembly includes a mechanical
stop to prevent over-stroking. At 3.0 in.
wg, air valve leakage does not exceed
44 cfm (21 L/s).
Fan–Inlet Combinations:
LSXF
Inlet 08SQ 09SQ 10SQ
5" X
6" X X
8" X X
8x14" X X
FAN MOTOR
PSC—Single-speed, direct-drive,
permanent split capacitor type.
Thermal overload protection provided.
Motors will be designed specifically for
use with an open SCR. Motors will be
single-speed with standard SCR for
speed control. Motors will
accommodate anti-backward rotation
at start up. Motor and fan assembly is
isolated from terminal unit.
ECM—Electrically Commutated Motor
is designed for high-efficient operation
with over 70% efficiency throughout
the operating range
FAN SPEED CONTROL
Variable Speed Control Switch
(SCR)—The SCR speed control device
is provided as standard and allows the
operator infinite fan speed adjustment
so the fan output may be modified to
achieve exact cfm requirements.
TRANSFORMER
The 50-VA transformer is factoryinstalled
in the fan control box to
provide 24 VAC for controls.
DISCONNECT SWITCH
A toggle disconnect is provided as
standard and allows the operator to
turn the unit on or off by toggling to
the appropriate setting. This switch
breaks both legs of power to the fan
and the electronic controls (if
applicable). Not provided on LPEF
pneumatic controls.
VAV-PRC008-EN LHP 27

Fan-Powered
Low-Height
Parallel
Mechanical
Specifications
OUTLET CONNECTION
Flanged Connection—A
rectangular opening on the unit
discharge to accept a 90° flanged
ductwork connection.
FILTER
A 1" (25 mm) filter is provided on the
plenum inlet and attaches to the unit
with a filter frame.
ACCESS PANEL
Internal access to unit is achieved
through the removable bottom access
panel.
HOT WATER COIL
Parallel Water Coils—factoryinstalled
on the plenum inlet.
The coil has 1-row with 144 aluminum
fins per foot (.305 m) and, if needed, 2-
row with 144 aluminum fins per foot
(.305 m). Full fin collars provided for
accurate fin spacing and maximum fintube
contact. The 3/8" (9.5 mm) OD
seamless copper tubes are
mechanically expanded into the fin
collars. Coils are proof tested at
450 psig (3102 kPa) and leak tested at
300 psig (2068 kPa) air pressure under
water. Coil connections are brazed
with right-hand configuration.
ELECTRIC HEAT COIL
The electric heater is factory-provided
and -installed, UL recognized
resistance open-type heater. It also
contains a disc-type automatic pilot
duty thermal primary cutout, and
manual reset load carrying thermal
secondary device. Heater element
material is nickel-chromium. The heater
terminal box is provided with 7/8"
(22 mm) knockouts for customer
power supply. Terminal connections
are plated steel with ceramic
insulators. Heater control access is
on the same side as fan control units.
All fan-powered units with electric
reheat are single-point power
connections.
ELECTRIC HEAT OPTIONS
Magnetic Contactor—An optional
electric heater 24-volt contactor for use
with direct digital control (DDC) or
analog electronic controls.
Mercury Contactor—An optional
electric heater 24-volt contactor for use
with direct digital control (DDC) or
analog electronic controls.
P.E. Switch with Magnetic
Contactor—This optional switch and
magnetic contactor is for use with
pneumatic controls.
P.E. Switch with Mercury
Contactor—This optional switch and
mercury contactor is for use with
pneumatic controls.
Airflow Switch—An optional air
pressure device designed to disable
the heater when the system fan is off.
Power Fuse—If power fuse is chosen
with a unit with electric heat, then a
safety fuse located in the line of power
of the electric heater to prevent power
surge damage to the electric heater.
Any electric heat unit with a calculated
MCA greater than or equal to 30 will
have a fuse provided.
Disconnect Switch—An optional
factory-provided door interlocking
disconnect switch on the heater
control panel disengages primary
voltage to the terminal.
UNIT CONTROLS SEQUENCE OF
OPERATION
The controller continuously monitors
the zone temperature against its
setpoint and varies the primary airflow
as required to meet zone setpoints.
Airflow is limited by minimum and
maximum setpoints. For a low-height
parallel unit, the controller will
intermittently start the fan upon a call
for heat. Upon a further call for heat,
any hot water or electric heat
associated with the unit is enabled.
1. Primary Airflow—The fan energizes
when primary airflow drops below
the fan setpoint airflow. The fan
automatically starts when the zone
temperature drops to the heating
temperature setpoint.
2. Zone Temperature—The fan
energizes when the zone temperature
drops to a selectable number of
degrees above the heating
temperature setpoint.
DIRECT DIGITAL CONTROLS
DDC Actuator—Trane 3-wire,
24-VAC, floating-point control actuator
with linkage release button. Torque is
35 in-lb minimum and is non-spring
return with a 90-second drive time.
Travel is terminated by end stops at
fully-opened and -closed positions. An
integral magnetic clutch eliminates
motor stall.
Direct Digital Controller—The
microprocessor based terminal unit
controller provides accurate, pressureindependent
control through the use
of a proportional integral control
algorithm and direct digital control
technology. The controller, named the
Unit Control Module (UCM), monitors
zone temperature setpoints, zone
temperature and its rate of change,
and valve airflow using a differential
pressure signal from the pressure
transducer. Additionally, the controller
can monitor either supply duct air
temperature or CO 2
concentration via
appropriate sensors. The controller is
provided in an enclosure with 7/8"
(22 mm) knockouts for remote control
wiring. A Trane UCM zone sensor
is required.
DDC Zone Sensor—The UCM
controller senses zone temperature
through a sensing element located in
the zone sensor. In addition to the
sensing element, zone sensor options
may include an externally-adjustable
setpoint, communications jack for use
with a portable edit device, and an
override button to change the
individual controller from unoccupied
to occupied mode. The override button
has a cancel feature that will return the
system to unoccupied. Wired zone
sensors utilize a thermistor to vary the
voltage output in response to changes
in the zone temperature. Wiring to the
UCM controller must be 18- to 22-awg.
twisted pair wiring. The setpoint
adjustment range is 50–88ºF (10–31°C).
Depending upon the features available
in the model of sensor selected, the
zone sensor may require from a 2-wire
to a 5-wire connection. Wireless zone
sensors report the same zone
information as wired zone sensors,
but do so using radio transmitter
technology. Therefore with wireless,
wiring from the zone sensor to the
UCM is unnecessary.
Digital Display Zone Sensor with
Liquid Crystal Display (LCD)—
The digital display zone sensor
contains a sensing element, which
sends a signal to the UCM. A Liquid
Crystal Display (LCD) displays setpoint
or space temperature. Sensor buttons
allow the user to adjust setpoints, and
allow space temperature readings to
be turned on or off. The digital display
zone sensor also includes a
LHP 28
VAV-PRC008-EN

Fan-Powered
Low-Height
Parallel
Mechanical
Specifications
communication jack for use with a
portable edit device, and an override
button to change the UCM from
unoccupied to occupied. The override
button has a cancel feature, which
returns the system to
unoccupied mode.
Trane LonTalk—The controller is
designed to send and receive data
using SCC LonTalk profile. Current unit
status conditions and setpoints may
be monitored and/or edited from any of
several LonTalk-compatible systemlevel
controllers.
ANALOG ELECTRONIC CONTROLS
Analog Actuator—A Trane 3- wire,
24-VAC, floating-point control actuator
with linkage release button. Torque is
35 in-lb minimum and is non-spring
return with a 90-second drive time.
Travel is terminated by end stops at
fully-opened and -closed positions. An
integral magnetic clutch eliminates
motor stall.
Analog Electronic Controller—The
controller consists of a circuit board
that offers basic VAV unit operation
and additional override functions and
operates using 24 VAC power. The
controller uses a capacitive type
pressure transducer to maintain
consistent air delivery regardless of
system pressure changes. The
enclosure with 7/8" (22 mm) knockouts
for remote control wiring. A Trane
electronic zone sensor is required.
Analog-Electronic Thermostat—
This single-temperature, wall-mounted
electronic device utilizes a thermistor to
vary the voltage output in response to
changes in the zone temperature.
Connections to the VAV unit circuit
board are made using standard threeconductor
thermostat wire. The setpoint
adjustment range is 63–85ºF (17–29°C).
The sensor is available in two models.
One model has a concealed, internallyadjustable
setpoint. The other model
has an externally-adjustable setpoint.
PNEUMATIC CONTROLS
Normally Open Actuator—
Pneumatic 3 to 8 psig (20 to 55 kPa)
spring-range pneumatic actuator.
3011 Pneumatic Volume Regulator
(PVR)—The regulator is a thermostat
reset velocity controller, which
provides consistent air delivery within
5% of cataloged flow down to 18% of
unit cataloged cfm, independent of
changes in system static pressure.
Factory-calibrated, field-adjustable set
points for minimum and maximum
flows. Average total unit bleed rate,
excluding thermostat, is 28.8 scim at
20 psig (7.87 ml/min at 138 kPa) supply.
UNIT OPTIONS
Power Fuse (LPCF, LPWF)—
Optional fuse is factory-installed in the
primary voltage hot leg.
HOT WATER VALVES
Two-Position Valve—The valve is a
field-adaptable, 2-way or 3-way
configuration and ships with a cap to
be field-installed when configured as a
2-way valve. All connections are
National Pipe Thread (NPT). The valve
body is forged brass with a stainless
steel stem and spring. Upon demand,
the motor strokes the valve. When the
actuator drive stops, a spring returns
the valve to its fail-safe position.
Flow Capacity – 1.17 Cv
Overall Diameter – ½" NPT
Close-off Pressure – 30 psi (207 kPa)
Flow Capacity – 3.0 Cv
Overall Diameter – 3/4" NPT
Close-off Pressure – 14.5 psi (100 kPa)
Flow Capacity – 6.4 Cv
Overall Diameter – 1" NPT
Close-off Pressure – 9 psi (62 kPa)
Maximum Operating Fluid
Temperature – 203ºF (95ºC)
Maximum system pressure – 300 psi
(2067 kPa). Maximum static pressure –
300 psi (2067 kPa)
Electrical Rating – 7 VA at 24 VAC,
6.5 Watts, 50/60 Hz
8 feet (2.44 m) of plenum rated wire
lead is provided with each valve.
Proportional Water Valve—The valve
is a field-adaptable, 2-way or 3-way
configuration and ships with a cap over
the bottom port. This configures the
valve for 2-way operation. For 3-way
operation, remove the cap. The valve is
linear equal percentage design. The
intended fluid is water or water and
glycol (50% maximum glycol). The
actuator is a synchronous motor drive.
The valve is driven to a predetermined
position by the UCM controller using a
proportional plus integral control
algorithm. If power is removed, the
valve stays in its last position. The
actuator is rated for plenum applications
under UL 94-5V and UL 873 standards.
Pressure and Temperature Ratings –
The valve is designed and tested in full
compliance with ANSI B16.15 Class 250
pressure/temperature ratings, ANSI
B16.104 Class IV control shutoff
leakage, and ISA S75.11 flow
characteristic standards.
Flow Capacity – 0.7 Cv, 2.2 Cv, 3.8 Cv,
and 6.6 Cv
Overall Diameter – ½" NPT, ¾" NPT
(6.6 Cv)
Maximum Allowable Pressure – 300 psi
(2068 kPa)
Maximum Operating Fluid
Temperature – 200ºF (93°C)
Maximum Close-off Pressure – 55 psi
(379 kPaP
Electrical Rating – 6 VA at 24 VAC.
10 feet (3.05 m) of plenum rated
22-gage wire for connection.
Terminations are #6 stabs.
VAV-PRC008-EN LHP 29

Fan-Powered
Low-Height
Series
Table of
Contents
Service Model Number Description LHS 2 – 3
General Data – Valve/Controller Airflow Guidelines LHS 4
Performance Data – Pressure Requirements LHS 5 – 6
Performance Data – Fan Curves LHS 7 – 8
Performance Data – Hot Water Coil LHS 9 – 10
Performance Data – Electrical Data LHS 11 - 12
Performance Data – Acoustics LHS 13 - 16
Dimensional Data LHS 17 - 24
Mechanical Specifications LHS 25 - 27
VAV-PRC008-EN LHS 1

Low-Height Series Fan-
Powered Terminal Units
The features of the low-height series
fan-powered terminal units are
described by the product categories
shown below in bold. Within each
category the options available are
listed.
LSCF
LSWF
LSEF
Fan-Powered
Low-Height
Series
Digit 1, 2—Unit Type
LS VariTrane low-height series fanpowered
Digit 3—Reheat
C Cooling Only
E Electric Heat
W Hot Water Heat
Digit 4—Development Sequence
F Sixth
Digit 5, 6—Primary Air Valve
05 5” inlet (350 cfm)
06 6" inlet (500 cfm)
08 8" inlet (900 cfm)
RT (8" x 14" inlet (1800 cfm)
Digit 7, 8—Secondary Air Valve
00 N/A
Digit 9—Fan
V 08SQ 500 nominal cfm
W 09SQ 900 nominal cfm
X 10SQ 1800 nominal cfm
Digit 10, 11—Design Sequence
E0 Fifth (factory assigned)
Digit 12, 13, 14, 15—Controls
ENON No controls, field-installed DDC/
electric
PNON No controls, field-installed
pneumatic
DD00 Trane elec actuator only
DD01 DDC – cooling only
DD02 DDC – N.C. on/off water valve
control
DD03 DDC – prop hot water valve
control
DD04 DDC – on/off electric heat
control
DD05 DDC – pulse-width modulation
control
DD07 DDC – N.O. on/off water valve
control
DD11 LonTalk DDC Controller—
Cooling only
DD12 LonTalk DDC Controller w/ N.C.
on/off hot water control
DD13 LonTalk DDC Controller w/
DD14
proportional hot water control
LonTalk DDC Controller–on/off
electric heat control
DD15 LonTalk DDC Controller w/
pulse-width modulation electric
heat control
DD17
FM00
FM01
HNY2
INV3
LonTalk DDC Controller w/ N.O.
on/off hot water control
FM customer actuator & control
FM Trane actuator w/ customersupplied
controller
FM Honeywell W7751H
FM Invensys MNL-V2R
Service
Model Number
Description
PWR1 FM Siemens 540-100 w/
GDE131.1 actuator
PWR2 FM Siemens 540-103 w/
GDE131/1 actuator
PW12 FM Siemens 550-065
PW13 FM Siemens 550-067
VMA2 FM Johnson VMA-1420
EI71 Analog – Series fan-powered
on/off reheat
PN00 PN – N.O. Trane pneumatic
actuator, R.A. stat
PN51 PN – N.O. PVR, duct pressure
switch, R.A. stat
PN52 PN – N.O. PVR, dual pressure
main, R.A. stat
Notes:
N.C. = Normally-closed
N.O. = Normally-opened
DA Stat = Direct-acting pneumatic t-stat
(by others)
RA Stat = Reverse-acting pneumatic
t-stat (by others)
PN = Pneumatic
FM = Factory installation of customersupplied
controller
PVR = Pneumatic Volume Regulator
Digit 16—Insulation
A 1/2" Matte-faced
B 1" Matte-faced
C 1/2" Foil-faced
D 1" Foil-faced
F 1" Double-wall
G 3/8" Closed-cell
Digit 17—Motor Type
D PSC Motor
E High-efficiency motor (ECM)
Digit 18—Motor Voltage
1 115/60/1
2 277/60/1
3 347/60/1
5 230/50/1
Digit 19—Outlet Connection
1 Flanged
2 Slip & Drive
Digit 20—Not Used
0 N/A
Digit 21—Water Coil
0 None
3 1-Row–Discharge installed, LH
4 1-Row–Discharge installed, RH
5 2-Row–DIscharge installed, LH
6 2-Row–Discharge installed, RH
Digit 22—Electrical Connections
L Left (airflow hitting you in the
face)
R Right (airflow hitting you in the
face)
LHS 2
VAV-PRC008-EN

Fan-Powered
Low-Height
Series
Service
Model Number
Description
Digit 23—Transformer
0 N/A (provided as standard)
Digit 24—Disconnect Switch
0 None
W With
Note:
LSCF, LSWF – Toggle Disconnect
LSEF – Door Interlocking Power
Disconnect
Digit 25—Power Fuse
0 None
W With
Digit 26—Electric Heat Voltage
0 None
A 208/60/1
B 208/60/3
C 240/60/1
D 277/60/1
E 480/60/1
F 480/60/3
G 347/60/1
H 575/60/3
J 380/50/3
Digit 27, 28, 29—Electric Heat kW
000 None
005 0.5 kW
010 1.0 kW
015 1.5 kW
020 2.0 kW
025 2.5 kW
030 3.0 kW
035 3.5 kW
040 4.0 kW
045 4.5 kW
050 5.0 kW
055 5.5 kW
060 6.0 kW
065 6.5 kW
070 7.0 kW
075 7.5 kW
080 8.0 kW
090 9.0 kW
100 10.0 kW
110 11.0 kW
120 12.0 kW
130 13.0 kW
140 14.0 kW
150 15.0 kW
160 16.0 kW
170 17.0 kW
180 18.0 kW
Digit 30—Electric Heat Stages
0 None
1 1 Stage
2 2 Stages Equal
Digit 31—Contactors
0 None
1 24-Volt magnetic
2 24-Volt mercury
3 PE with magnetic
4 PE with mercury
Digit 32—Air Flow Switch
0 None
W With
VAV-PRC008-EN LHS 3

Fan-Powered
Low-Height
Series
General Data—
Valve/Controller
Airflow Guidelines
Primary Airflow Control Factory Settings – I-P
Control Air Valve Maximum Valve Maximum Controller Minimum Controller Constant Volume
Type Size (in.) Cfm Cfm Cfm Cfm
5 350 40–350 0, 40–350 40–350
Direct Digital Control/ 6 500 60–500 0, 60–500 60–500
UCM 8 900 105–900 0, 105–900 105–900
8x14 2200 200–2200 0, 220–2200 220–2200
5 350 63–350 0, 63–350 63–350
Pneumatic with 6 500 73–500 0, 73–500 73–500
Volume Regulator 8 900 134–900 0, 134–900 134–900
8x14 2100 297–2100 0, 297–2100 297–2100
5 350 82–350 0, 82–350 82–350
Analog Electronic 6 500 120–500 0, 120–500 120–500
8 900 210–900 0, 210–900 210–900
8x14 2200 440–2200 0, 440–2200 440–2200
Primary Airflow Control Factory Settings – SI
Control Air Valve Maximum Valve Maximum Controller Minimum Controller
Type Size (in.) L/s L/s L/s
5 165 19–165 0, 19–165 19–165
Direct Digital Control/ 6 236 28–236 0, 28–236 28–236
UCM 8 425 50–425 0, 50–425 50–425
8x14 1038 104–1038 0, 104–1038 104–1038
5 165 30–165 0, 30–165 30–165
Pneumatic with 6 236 35–236 0, 35–236 35–236
Volume Regulator 8 425 63–425 0, 63–425 63–425
8x14 991 140–991 0, 140–991 140–991
5 165 39–165 0, 39–165 39–165
Analog Electronic 6 236 57–236 0, 57–236 57–236
8 425 100–425 0, 100–425 100–425
8x14 1038 208–1038 0, 208–1038 208–1038
Note: Maximum airflow must be greater than or equal to minimum airflow.
LHS 4
VAV-PRC008-EN

Fan-Powered
Low-Height
Series
Unit Air Pressure Drop – in. wg (I-P)
Fan/Inlet Airflow Cooling
Size Cfm Only
08SQ–05 150 0.01
250 0.03
350 0.11
08SQ–06 150 0.02
275 0.14
400 0.35
500 0.58
08SQ–08 150 0.01
275 0.05
400 0.13
500 0.21
09SQ–06 350 0.17
400 0.26
450 0.37
500 0.50
09SQ–08 400 0.08
600 0.24
750 0.40
900 0.61
09SQ–8x14 600 0.18
700 0.27
900 0.51
1050 0.73
10SQ–08 400 0.08
600 0.38
800 0.84
10SQ–8x14 600 0.21
900 0.50
1100 0.77
1500 1.47
Performance
Data—Air Pressure
Requirements
Coil Air Pressure Drop – in. wg (I-P)
Fan Airflow 1-Row HW 2-Row HW
Size Cfm (in. wg) (in. wg)
08SQ 100 0.00 0.01
200 0.01 0.03
300 0.02 0.05
400 0.03 0.07
500 0.05 0.10
09SQ 400 0.03 0.07
550 0.06 0.12
700 0.09 0.17
850 0.13 0.24
1000 0.18 0.32
10SQ 400 0.01 0.02
800 0.03 0.07
1200 0.06 0.12
1600 0.11 0.20
2000 0.16 0.29
Note: HW Coil Only pressure drops do not include unit
pressure drop.
Attenuator Air
Pressure Drop (I-P)
Fan Plenum
Size Cfm Attenuator
08SQ 150 0.02
250 0.04
350 0.06
450 0.09
09SQ 350 0.06
500 0.10
650 0.15
800 0.22
10SQ 400 0.02
700 0.05
1000 0.09
1300 0.14
1600 0.20
VAV-PRC008-EN LHS 5

Fan-Powered
Low-Height
Series
Performance
Data—Air Pressure
Requirements
Unit Air Pressure Drop – Pa (SI)
Fan/Inlet Airflow Cooling
Size L/s Only
08SQ–05 71 2
118 9
165 28
08SQ–06 71 5
130 34
189 86
236 143
08SQ–08 71 3
130 14
189 32
236 52
09SQ–06 165 43
189 66
212 93
236 124
09SQ–08 189 21
283 59
354 100
425 151
8x14–09SQ 283 44
330 66
425 126
495 182
10SQ–08 189 20
283 94
378 209
10SQ–8x14 283 51
425 124
519 191
708 367
Coil Air Pressure Drop – Pa (SI)
Fan Airflow 1-Row HW 2-Row HW
Size L/s (Pa) (Pa)
08SQ 47 1 3
94 3 6
142 5 11
189 9 18
236 13 25
09SQ 189 9 18
260 15 29
330 23 43
401 33 0
472 44 80
10SQ 189 3 6
378 8 16
566 16 31
755 27 50
944 40 72
Note: HW Coil Only pressure drops do not include unit
pressure drop.
Attenuator Air
Pressure Drop (SI)
Fan Plenum
Size L/s Attenuator
08SQ 71 0.01
118 0.01
165 0.02
212 0.03
09SQ 165 0.02
236 0.03
307 0.05
378 0.06
10SQ 189 0.01
330 0.02
472 0.03
614 0.04
755 0.06
LHS 6
VAV-PRC008-EN

Fan-Powered
Low-Height
Series
Performance
Data—
Fan Curves
Notes:
1. When attenuator is required, add
inlet attenuator pressure to discharge
static pressure for final fan performance.
Pa
199
174
In. wg
0.80
0.70
Low-Height Series 08SQ—PSC
150
0.60
Discharge Static Pressure
125
100
75
50
0.50
0.40
0.30
0.20
170 cfm min
(80 L/s)
25
0.10
0
0.00
150 200 250 300 350 400 450 500 550 600 Cfm
71 94 118 142 165 189 212 236 260 283 L/s
Airflow
Pa
199
In. wg
0.80
Low-Height Series 09SQ—PSC
174
0.70
150
0.60
LSCF and LSEF maximum
Minimum
1-row coil maximum
2-row coil maximum
Discharge Static Pressure
125
100
75
50
0.50
0.40
0.30
0.20
350 cfm min
(165 L/s)
25
0.10
0
0.00
300 400 500 600 700 800 900 1000 1100 Cfm
142 189 236 283 330 378 425 472 519 L/s
Airflow
Pa
199
In. wg
0.80
Low-Height Series 10SQ—PSC
174
0.70
Discharge Static Pressure
150
125
100
75
50
0.60
0.50
0.40
0.30
0.20
405 cfm min
(191 L/s)
25
0.10
0
0.00
300 500 700 900 1100 1300 1500 1700 1900 2100 2300 Cfm
142 236 330 425 519 614 708 802 897 991 1086 L/s
Airflow
VAV-PRC008-EN LHS 7

Fan-Powered
Low-Height
Series
ECM Data—
Fan Curves
Discharge Static Pressure
Pa In. wg LSxF 08SQ—ECM
125
100
75
50
25
0.50
0.40
0.30
0.20
0.10
100 cfm min
(47 L/s)
Notes:
1. ECMs (Electrically Commutated Motors)
are ideal for systems seeking maximum
motor efficiency.
2. When attenuator is required, add inlet
attenuator pressure to discharge
static pressure for final fan performance.
0
0.00
50 100 150 200 250 300 350 400 450 500
24 47 71 94 118 142 165 189 212 236
Airflow
Cfm
L/s
Pa In. wg LSxF 09SQ—ECM
125
0.50
100
0.40
Discharge Static Pressure
75
50
0.30
0.20
240 cfm min
(113 L/s)
LSCF and LSEF maximum
Minimum
1-row coil maximum
2-row coil maximum
25
0.10
0
0.00
200 300 400 500 600 700 800 900 1000
94 142 189 236 283 330 378 425 472
Airflow
Cfm
L/s
Pa In. wg LSxF 10SQ—ECM
125
0.50
100
0.40
Discharge Static Pressure
75
50
25
0.30
0.20
0.10
400 cfm min
(189 L/s)
0
0.00
300 500 700 900 1100 1300 1500 1700 1900 Cfm
142 236 330 425 519 614 708 802 897 L/s
LHS 8
Airflow
VAV-PRC008-EN

Fan-Powered
Low-Height
Series
Performance
Data—Hot Water
Coil (I-P)
Fan Sizes 08SQ & 09SQ (I-P)
Water
Pressure
Airflow (Cfm)
Rows Gpm Drop (ft) 100 200 300 400 500 600 700 800 900 1000
1-Row 1.0 0.15 — — — — — — — — — —
Capacity 2.0 0.58 — — — — — — — — — —
MBH 3.0 1.27 7.92 11.16 13.45 15.34 16.97 18.42 19.73 20.92 22.01 23.02
4.0 2.24 8.08 11.48 13.94 15.98 17.76 19.36 20.82 22.16 23.39 24.54
5.0 3.48 8.17 11.69 14.25 16.39 18.28 19.99 21.54 22.98 24.32 25.57
6.0 4.98 8.24 11.83 14.47 16.69 18.65 20.43 22.06 23.58 24.99 26.31
2-Row 1.0 0.76 9.04 14.59 18.26 20.87 22.83 24.35 25.57 26.58 27.42 28.14
Capacity 2.0 2.60 9.45 15.95 20.70 24.34 27.24 29.61 31.59 33.28 34.74 36.02
MBH 3.0 5.39 9.59 16.43 21.60 25.68 29.01 31.78 34.14 36.17 37.95 39.53
4.0 9.06 9.66 16.68 22.08 26.40 29.96 32.96 35.54 37.78 39.75 41.51
5.0 13.57 9.70 16.83 22.37 26.85 30.56 33.71 36.43 38.80 40.90 42.78
Fan Size 10SQ (I-P)
Water
Pressure
Airflow (Cfm)
Rows Gpm Drop (ft) 450 600 750 900 1050 1200 1350 1500 1650 1800 1950
1-Row 1.0 0.16 — — — — — — — — — — —
Capacity 2.0 0.61 — — — — — — — — — — —
MBH 4.0 2.32 25.05 28.61 31.67 34.39 36.86 39.12 41.23 43.18 45.02 46.75 48.41
6.0 5.09 26.10 30.00 33.40 36.45 39.26 41.85 44.28 46.57 48.73 50.77 52.71
8.0 8.91 26.66 30.76 34.34 37.59 40.59 43.38 46.00 48.48 50.83 53.07 55.20
10.0 13.77 27.02 31.23 34.95 38.32 41.44 44.36 47.11 49.72 52.20 54.56 56.83
2-Row 1.0 1.29 28.40 32.18 34.87 36.88 38.43 39.66 40.66 41.49 42.19 42.79 43.30
Capacity 2.0 4.31 33.46 39.56 44.37 48.27 51.49 54.19 56.50 58.49 60.23 61.76 63.13
MBH 3.0 8.84 35.30 42.41 48.23 53.10 57.23 60.78 63.88 66.61 69.03 71.20 73.16
4.0 14.77 36.25 43.91 50.30 55.72 60.40 64.48 68.08 71.28 74.15 76.74 79.09
5.0 22.03 36.83 44.83 51.58 57.37 62.41 66.84 70.78 74.30 77.48 80.36 82.99
Water Coil Notes
1. Fouling Factor = 0.0005.
2. The following equations may be used in calculating Leaving Air Temperature (LAT) and Water Temperature
Difference (WTD).
LAT = EAT + (
MBH x 921.7
Cfm
WTD = EWT - LWT =
( )
2 x MBH
Gpm
3. Capacity based on 70°F entering air temperature and 180°F entering water temperature. Refer to correction
factors for different entering conditions.
)
Temperature Correction Factors for Water Pressure Drop (ft)
Average Water Temperature 200 190 180 170 160 150 140 130 120 110
Correction Factor 0.970 0.985 1.000 1.020 1.030 1.050 1.080 1.100 1.130 1.150
Temperature Correction Factors for Coil Capacity (MBH)
Entering Water Minus Entering Air 40 50 60 70 80 90 100 110 120 130
Correction Factor 0.355 0.446 0.537 0.629 0.722 0.814 0.907 1.000 1.093 1.187
VAV-PRC008-EN LHS 9

Fan-Powered
Low-Height
Series
Performance
Data—Hot
Water Coil (SI)
Fan Size 08SQ & 09SQ (SI)
Water
Pressure
Airflow (L/s)
Rows L/s Drop (kPa) 47 94 142 189 236 283 330 378 425 472
1-Row 0.06 0.44 — — — — — — — — — —
Capacity 0.13 1.72 — — — — — — — — — —
kW 0.19 3.81 2.32 3.27 3.94 4.50 4.97 5.40 5.78 6.13 6.45 6.75
0.25 6.71 2.37 3.36 4.08 4.68 5.21 5.67 6.10 6.49 6.86 7.19
0.32 10.40 2.39 3.42 4.18 4.80 5.36 5.86 6.31 6.74 7.13 7.49
0.38 14.90 2.41 3.47 4.24 4.89 5.47 5.99 6.47 6.91 7.32 7.71
2-Row 0.06 2.27 2.65 4.28 5.35 6.12 6.69 7.14 7.49 7.79 8.04 8.25
Capacity 0.13 7.78 2.77 4.67 6.07 7.13 7.98 8.68 9.26 9.75 10.18 10.56
kW 0.19 16.11 2.81 4.82 6.33 7.53 8.50 9.31 10.00 10.60 11.12 11.58
0.25 27.08 2.83 4.89 6.47 7.74 8.78 9.66 10.41 11.07 11.65 12.16
0.32 40.58 2.84 4.93 6.56 7.87 8.96 9.88 10.68 11.37 11.99 12.54
Fan Size 10SQ (SI)
Water
Pressure
Airflow (L/s)
Rows L/s Drop (kPa) 212 283 354 425 495 566 637 708 779 849 920
1-Row 0.06 0.48 — — — — — — — — — — —
Capacity 0.13 1.82 — — — — — — — — — — —
kW 0.25 6.93 7.34 8.38 9.28 10.08 10.80 11.47 12.08 12.66 13.19 13.70 13.70
0.38 15.22 7.65 8.79 9.79 10.68 11.50 12.27 12.98 13.65 14.28 14.88 14.88
0.50 26.64 7.81 9.01 10.07 11.02 11.90 12.71 13.48 14.21 14.90 15.55 15.55
0.63 41.16 7.92 9.15 10.24 11.23 12.15 13.00 13.81 14.57 15.30 15.99 15.99
2-Row 0.06 3.84 8.32 9.43 10.22 10.81 11.26 11.62 11.92 12.16 12.36 12.54 12.54
Capacity 0.13 12.90 9.81 11.59 13.00 14.15 15.09 15.88 16.56 17.14 17.65 18.10 18.10
kW 0.19 26.43 10.35 12.43 14.14 15.56 16.77 17.81 18.72 19.52 20.23 20.87 20.87
0.25 44.15 10.62 12.87 14.74 16.33 17.70 18.90 19.95 20.89 21.73 22.49 22.49
0.32 65.84 10.79 13.14 15.12 16.81 18.29 19.59 20.74 21.78 22.71 23.55 23.55
Water Coil Notes
1. Fouling Factor = 0.0005.
2. The following equations may be used in calculating Leaving Air Temperature (LAT) and Water Temperature
Difference (WTD).
LAT = EAT + kW x 0.83 kW
( )
WTD = EWT - LWT =
L/s
( (4.19)L/s)
3. Capacity based on 21°C entering air temperature and 82°C entering water temperature. Refer to correction
factors for different entering conditions.
Temperature Correction Factors for Water Pressure Drop (kPa)
Average Water Temperature 93 88 82 77 71 66 60 54 49 43
Correction Factor 0.970 0.985 1.000 1.020 1.030 1.050 1.080 1.100 1.130 1.150
Temperature Correction Factors for Coil Capacity (kW)
Entering Water Minus Entering Air 22 27 33 38 44 50 55 61 67 72
Correction Factor 0.355 0.446 0.537 0.629 0.722 0.814 0.907 1.000 1.093 1.187
LHS 10
VAV-PRC008-EN

Fan-Powered
Low-Height
Series
Performance
Data—
Electrical Data
LSEF—Electric Coil kW Guidelines – Minimum to Maximum (PSC Motor Units)
Fan Single-Phase Voltage Three-Phase Voltage
Size Stages 120V 208V 240V 277V 347V 480V 208V 480V 600V
08SQ 1 0.5*–4.5* 0.5–6.0 0.5–6.0 0.5–6.0 0.5–6.0 0.5–6.0 0.5–6.0 1.0–6.0 1.5–6.0
2 0.5*–4.5 0.5–6.0 0.5–6.0 1.0–6.0 1.0–6.0 1.0–6.0 1.0–6.0 3.0–6.0 5.0–5.0
3** — — — — — — — — —
09SQ 1 0.5*–4.5* 0.5–8.0 0.5–10.0 0.5–12.0 0.5–12.0 0.5–12.0 0.5–12.0 1.0–12.0 1.5–12.0
2 0.5*–4.5 0.5–8.0 0.5–10.0 1.0–12.0 1.0–12.0 1.0–12.0 1.0–12.0 3.0–12.0 4.5–10.0
3** — — — — — — — — —
10SQ 1 0.5*–4.0* 0.5–7.5 0.5–8.0 0.5–11.0 0.5–15.0 0.5–18.0 0.5–13.0 1.0–18.0 1.5–18.0
2 0.5*–4.0* 0.5–7.5 0.5–8.0 1.0–11.0 1.0–15 1.0–18.0 1.0–13.0 2.0–18.0 3.0–18.0
3** — — — — — — — — —
*Special heater offering.
**Three stages of electric heat available only with pneumatic controls.
LSEF—Electric Coil kW Guidelines – Minimum to Maximum (ECM Units)
Fan Single-Phase Voltage Three-Phase Voltage
Size Stages 120V 208V 240V 277V 347V 480V 208V 480V 600V
08SQ 1 0.5*–5.0* 0.5–6.0 0.5–6.0 0.5–6.0 — 0.5–6.0 0.5–6.0 1.0–6.0 —
2 0.5*–5.0* 0.5–6.0 0.5–6.0 1.0–6.0 — 1.0–6.0 1.0–6.0 3.0–6.0 —
3 — — — — — — — — —
09SQ 1 0.5*–4.5* 0.5–8.0 0.5–10.0 0.5–12.0 — 0.5–12.0 0.5–12.0 1.0–12.0 —
2 0.5*–4.5* 0.5–8.0 0.5–10.0 1.0–12.0 — 1.0–12.0 1.0–12.0 3.0–12.0 —
3 — — — — — — — — —
10SQ 1 0.5*–4.5* 0.5–8.0 0.5–9.0 0.5–12.0 — 0.5–18.0 0.5–14.0 1.0–18.0 —
2 0.5*–4.5* 0.5–8.0 0.5–9.0 1.0–12.0 — 1.0–18.0 1.0–14.0 2.0–18.0 —
3 — — — — — — — — —
*Special heater offering
Notes:
1. Coils available with 24 VAC magnetic or mercury contactors, load carrying P.E. switches, and P.E. switch with magnetic or mercury contactors.
2. Available kW increments are by 0.5 from 0.5 kW to 8.0 kW and by 1.0 kW from 9.0 to 18.0 kW.
3. Each stage will be equal in kW output.
4. All heaters contain an auto thermal cutout and a manual reset cutout.
5. The current amp draw for the heater elements is calculated by the formula below.
6. Only two stages of electric reheat available with Trane controls.
Fan Electrical Performance (PSC)
Maximum Fan Motor Amperage (FLA)
Fan Size HP 115 VAC 277 VAC 347 VAC
08SQ 1/3 5.5 2.5 1.8
09SQ 1/3 5.5 2.5 1.8
10SQ* 2 x 1/3 11.0 5.0 3.5
Notes:
1. Electric Heat Units - Units with Primary Voltage of 208/60/1,
208/60/3 or 240/60/1 use 115 VAC fan motors.
2. Electric Heat Units - Units with Primary Voltage of 277/60/1,
480/60/1 or 480/60/3 use 277 VAC fan motors.
3. Electric Heat Units - Units with Primary Voltage of 347/60/1 or
575/60/3 use 347 VAC fan motors.
4. Values are for standard, single-speed, permanent split capacitor
type motors. Consult factory for non-standard motor
performance.
5. Motor amps for 10SQ are total amps for two motors.
Fan Electrical Performance (ECM)
Maximum Fan Motor Amperage (FLA)
Fan Size HP 115 VAC 277 VAC
08SQ 1/2 1.3 .7
09SQ 1/2 5.0 2.7
10SQ 2 x 1/2 7.5 4.0
Formulas
Minimum Circuit Ampacity (MCA) Equation
• MCA = (motor amps + heater amps) x 1.25
Maximum Overcurrent Protection (MOP) Equation
• MOP = (2.25 x motor amps) + heater amps
General Sizing Rules:
• If MOP = 15, then fuse size = 15
• If MOP = 19, then fuse size = 15 with one exception. If heater
amps x 1.25 > 15, then fuse size = 20.
• If MOP ≤ MCA, then choose next fuse size greater than MCA.
• Control fusing not applicable.
• Standard Fuse Sizes: 15, 20, 25, 30, 35, 40, 45, 50, and 60.
Useful formulas:
Cfm x ATD
kW =
3145
kW x 1000
3φamps =
Primary Voltage x √ 3
ATD =
kW x 3145
Cfm
kW = 1214 x L/s x ATD
1φamps =
ATD =
kW
1214 x L/s
kW x 1000
Primary Voltage
VAV-PRC008-EN LHS 11

Fan-Powered
Low-Height
Series
Performance
Data—
Electrical Data
Minimum Unit Electric
Heat Cfm Guidelines (PSC)
Unit
Cfm
kW 08SQ 09SQ 10SQ
0.5 228 377 440
1 228 377 440
1.5 228 377 440
2 228 377 440
2.5 244 377 440
3 260 377 440
3.5 276 377 440
4 293 377 440
4.5 309 377 440
5 325 377 440
5.5 341 377 440
6 357 377 440
6.5 — 403 440
7 — 429 440
7.5 — 455 467
8 — 480 494
9 — 532 547
10 — 584 601
11 — 635 655
12 — 687 708
13 — — 762
14 — — 815
15 — — 869
16 — — 923
17 — — 976
18 — — 1030
Minimum Unit Electric
Heat Cfm Guidelines (ECM)
Unit
Cfm
kW 08SQ 09SQ 10SQ
0.5 128 377 480
1 128 377 480
1.5 128 377 480
2 128 377 480
2.5 159 377 480
3 190 377 480
3.5 221 377 480
4 253 377 480
4.5 284 377 480
5 315 377 480
5.5 346 377 480
6 377 377 480
6.5 — 403 480
7 — 429 480
7.5 — 455 505
8 — 480 530
9 — 532 580
10 — 584 630
11 — 635 680
12 — 687 730
13 — — 779
14 — — 829
15 — — 879
16 — — 929
17 — — 979
18 — — 1029
Minimum Unit Electric
Heat L/s Guidelines (PSC)
Unit
L/s
kW 08SQ 09SQ 10SQ
0.5 108 178 208
1 108 178 208
1.5 108 178 208
2 108 178 208
2.5 115 178 208
3 123 178 208
3.5 130 178 208
4 138 178 208
4.5 146 178 208
5 153 178 208
5.5 161 178 208
6 168 178 208
6.5 — 190 208
7 — 202 208
7.5 — 215 220
8 — 227 233
9 — 251 258
10 — 275 284
11 — 300 309
12 — 324 334
13 — — 360
14 — — 385
15 — — 410
16 — — 435
17 — — 461
18 — — 486
Minimum Unit Electric
Heat L/s Guidelines (ECM)
Unit
L/s
kW 08SQ 09SQ 10SQ
0.5 60 178 227
1 60 178 227
1.5 60 178 227
2 60 178 227
2.5 75 178 227
3 90 178 227
3.5 104 178 227
4 119 178 227
4.5 134 178 227
5 149 178 227
5.5 163 178 227
6 178 178 227
6.5 — 190 227
7 — 202 227
7.5 — 215 238
8 — 227 250
9 — 251 274
10 — 276 297
11 — 300 321
12 — 324 345
13 — — 368
14 — — 391
15 — — 415
16 — — 438
17 — — 462
18 — — 486
LHS 12
VAV-PRC008-EN

Fan-Powered
Low-Height
Series
Performance
Data—
Acoustics
Discharge Sound Power (dB)
Discharge Sound Power (dB)
Fan Inlet 0.5" ∆Ps 1.0" ∆Ps 2.0" ∆Ps 3.0" ∆Ps
Size Size Cfm L/s 2 3 4 5 6 7 2 3 4 5 6 7 2 3 4 5 6 7 2 3 4 5 6 7
08SQ 8 170 80 54 49 45 37 28 22 55 53 47 40 33 31 58 62 55 45 41 37 58 63 58 49 46 40
250 118 57 52 48 42 33 27 58 56 50 43 36 33 60 63 56 47 42 38 60 64 59 50 46 41
330 156 60 56 52 46 37 31 61 59 54 47 39 36 63 64 58 50 43 39 63 65 60 52 46 42
410 193 63 60 56 50 41 36 64 62 57 50 42 38 65 65 59 52 44 41 65 67 62 53 46 43
480 227 66 64 60 53 44 40 67 65 60 54 45 41 68 66 61 54 45 42 68 68 63 55 46 44
09SQ 8x14 350 165 58 57 54 51 45 41 59 58 58 52 45 41 60 60 58 53 47 42 61 61 58 54 48 44
500 236 62 62 59 57 51 49 62 63 62 57 51 49 64 65 62 58 53 49 66 66 62 59 54 51
700 330 66 68 65 64 59 59 67 69 66 64 59 59 70 71 66 65 60 59 72 73 68 66 61 61
800 378 70 71 67 67 62 62 70 71 68 67 62 62 71 72 68 67 63 62 73 74 70 68 64 64
890 420 72 73 69 69 65 64 72 73 70 69 65 64 73 74 70 69 65 64 74 75 71 70 66 66
10SQ 8x14 440 208 57 57 54 50 43 37 59 58 54 51 44 39 61 59 57 51 46 40 63 62 58 53 47 41
700 330 60 59 57 53 47 43 61 60 57 54 48 44 63 62 59 55 49 45 66 63 65 56 51 46
900 425 62 63 60 56 50 47 64 64 61 58 53 50 66 65 62 59 53 51 68 66 66 60 55 51
1100 519 66 67 64 62 57 55 68 68 65 62 57 56 69 69 66 63 58 56
1300 613 70 71 68 65 61 60 71 71 68 66 61 60
1500 708 72 73 70 68 64 63 73 73 70 69 64 63
1. All data are measured in accordance with Industry Standard ARI 880-98.
2. All sound power levels, dB re: 10 -12 Watts.
3. Where ∆Ps is inlet static pressure minus discharge static pressure.
Radiated Sound Power (dB)
Radiated Sound Power (dB)
Fan Inlet 0.5" ∆Ps 1.0" ∆Ps 2.0" ∆Ps 3.0" ∆Ps
Size Size Cfm L/s 2 3 4 5 6 7 2 3 4 5 6 7 2 3 4 5 6 7 2 3 4 5 6 7
08SQ 8 170 80 54 49 45 37 28 22 55 53 47 40 33 31 58 62 55 45 41 37 58 63 58 49 46 40
250 118 57 52 48 42 33 27 58 56 50 43 36 33 60 63 56 47 42 38 60 64 59 50 46 41
330 156 60 56 52 46 37 31 61 59 54 47 39 36 63 64 58 50 43 39 63 65 60 52 46 42
410 193 63 60 56 50 41 36 64 62 57 50 42 38 65 65 59 52 44 41 65 67 62 53 46 43
480 227 66 64 60 53 44 40 67 65 60 54 45 41 68 66 61 54 45 42 68 68 63 55 46 44
09SQ 8x14 350 165 58 53 47 39 32 27 59 56 56 43 37 34 62 63 61 52 45 42 64 65 62 54 49 45
500 236 62 57 51 44 36 30 63 59 57 46 39 36 65 64 62 53 46 44 67 66 63 55 50 47
700 330 68 63 56 50 40 33 68 64 58 50 42 39 69 65 62 53 47 46 71 67 64 56 51 50
800 378 70 66 58 52 44 38 70 66 59 52 44 41 71 67 63 55 48 47 72 69 65 57 52 51
890 420 72 67 59 54 46 40 72 67 60 54 46 42 73 69 64 56 49 48 74 71 67 59 53 51
10SQ 8x14 440 208 61 56 49 42 33 27 62 59 52 45 40 38 65 60 60 50 46 46 66 63 61 58 50 49
700 330 62 58 51 45 37 31 64 61 55 48 43 41 68 64 62 53 48 48 70 66 67 57 52 51
900 425 66 62 55 48 41 34 68 63 56 50 44 42 70 66 64 55 50 50 72 68 68 58 54 52
1100 519 71 65 58 53 46 42 72 68 65 57 52 52 73 70 69 60 55 54
1300 613 74 69 65 58 53 52 76 72 69 61 56 55
1500 708 76 71 64 60 54 52 78 74 70 63 58 57
1. All data are measured in accordance with Industry Standard ARI 880-98.
2. All sound power levels, dB re: 10 -12 Watts.
3. Where ∆Ps is inlet static pressure minus discharge static pressure.
Fan Only Sound Power (dB)
Outlet Discharge Sound Power (dB) Radiated Sound Power (dB)
Fan Static Octave Band Octave Bands
Size (in. wg) Cfm L/s 2 3 4 5 6 7 2 3 4 5 6 7
08SQ 170 80 56 49 51 46 42 38 53 47 44 36 26 21
0.25 250 118 58 52 54 50 46 43 56 51 48 41 30 23
(63 Pa) 330 156 62 56 58 54 50 49 59 56 52 46 36 27
410 193 65 59 63 58 56 56 60 59 55 49 40 34
480 227 68 62 65 62 60 59 63 62 58 53 44 37
09SQ 350 165 60 56 54 51 46 41 57 51 44 38 24 20
0.25 500 236 64 60 59 57 52 49 61 55 48 42 30 23
(63 Pa) 700 330 69 66 65 64 59 58 66 61 55 49 38 29
800 378 72 68 68 67 62 61 68 64 58 52 42 32
890 420 74 71 70 70 65 64 70 67 60 55 45 39
10SQ 440 208 58 57 54 51 44 38 62 57 48 41 29 22
700 330 60 60 58 56 49 45 64 60 51 45 33 24
0.25 900 425 62 63 61 59 53 51 66 62 54 48 36 26
(63 Pa) 1100 519 65 66 64 62 57 55 68 64 57 52 40 30
1300 613 68 69 66 66 61 59 71 66 60 55 44 33
1500 708 70 72 69 69 64 63 74 69 62 58 48 36
1. All data are measured in accordance with Industry Standad ARI 880-98.
2. All sound power levels. dB re: 10 -12 Watts.
VAV-PRC008-EN LHS 13

Fan-Powered
Low-Height
Series
Performance
Data—
Acoustics
Sound Noise Criteria (NC)
Fan and 100% Primary
Radiated
Discharge
NC/NC with
NC Level (∆Ps) Attenuator (∆Ps)
Fan Inlet Fan 0.5" 1.0" 2.0" 3.0" Fan 0.5" 1.0" 2.0" 3.0"
Size Size Cfm L/s Only (127 Pa) (254 Pa) (508 Pa) (762 Pa) Only (127 Pa) (254 Pa) (508 Pa) (762 Pa)
08SQ 8 170 80 — — — 19 20 17/— 19/— 21/19 32/30 34/31
250 118 — — — 20 21 22/19 22/19 25/22 34/31 35/32
330 156 — — 15 21 22 26/23 26/23 29/26 35/32 36/34
410 193 20 16 19 22 25 30/26 31/27 32/30 36/34 38/36
480 227 23 21 22 24 26 34/30 35/32 36/34 37/35 39/37
09SQ 8x14 350 165 — — — 16 17 19/17 21/20 31/27 3633 37/34
500 236 16 19 20 22 24 24/22 26/25 32/29 37/34 38/35
700 330 24 26 27 30 32 31/29 34/32 35/32 37/34 39/36
800 378 26 30 30 31 34 35/31 37/35 37/35 38/36 40/38
890 420 30 32 32 34 35 38/35 38/37 38/37 40/39 42/40
10SQ 8x14 440 208 — — — 15 19 26/24 25/21 29/25 35/29 36/30
700 330 16 15 16 19 20 30/27 27/24 31/27 37/31 42/36
900 425 20 20 21 22 24 32/30 32/28 34/30 39/34 44/37
1100 519 24 25 26 27 35/32 36/34 40/37 45/39
1300 613 27 30 30 37/40 40/37 45/40
1500 708 31 32 32 40/39 42/40 46/42
1. “—” represents NC levels below NC 15.
2. NC Values are calculated using modeling assumptions based on ARI 885-98-02 Addendum.
3. Where ∆Ps is inlet static pressure minus discharge static pressure.
ARI 885-98-02add DISCHARGE TRANSFER FUNCTION ASSUMPTIONS:
Octave Band
2 3 4 5 6 7
Small Box (< 300 CFM) -24 -28 -39 -53 -59 -40
Medium Box (300-700 CFM) -27 -29 -40 -51 -53 -39
Large Box (> 700 CFM) -29 -30 -41 -51 -52 -39
Subtract from terminal unit sound power to determine discharge sound
pressure in the space.
ARI 885-98 RADIATED TRANSFER FUNCTION ASSUMPTIONS:
Octave Band
2 3 4 5 6 7
Type 2- Mineral Fiber Insulation -18 -19 -20 -26 -31 -36
Total dB reduction -18 -19 -20 -26 -31 -36
Subtract from terminal unit sound power to determine radiated sound
pressure in the space.
LHS 14
VAV-PRC008-EN

Fan-Powered
Low-Height
Series
Performance
Data—
Acoustics
Discharge Sound Power (dB)
Fan Only
ARI Conditions
Fan Inlet 1.5 Inlet Pressure (381 Pa)
Size Size Cfm L/s 2 3 4 5 6 7
08SQ 5, 6, 8 500 236 68 63 66 63 60 60
09SQ 6, 8, 8x14 800 378 72 68 68 67 62 61
10SQ 8, 8x14 1400 661 69 70 68 68 62 61
Radiated Sound Power (dB)
Fan Only
ARI Conditions
Fan Inlet 1.5" Inlet Pressure (381 Pa)
Size Size Cfm L/s 2 3 4 5 6 7
08SQ 5, 6, 8 500 236 64 62 59 54 45 38
09SQ 6, 8, 8x14 800 378 68 64 58 52 42 32
10SQ 8, 8x14 1400 661 72 68 61 56 46 35
Radiated Sound Power (dB)
Fan and Valve
ARI Conditions
Fan Inlet Fan Fan Prim. Prim. 1.5" Inlet Pressure (381 Pa)
Size Size Cfm L/s Cfm L/s 2 3 4 5 6 7
08SQ 5 500 236 250 118 67 64 58 53 44 40
6 500 236 400 189 70 65 60 54 44 41
8 500 236 500 236 68 66 61 54 46 42
09SQ 6 800 448 400 189 71 68 61 54 45 42
8 800 448 700 330 71 67 60 53 45 44
8x14 800 448 800 378 70 66 61 53 46 44
10SQ 8 1400 661 700 330 72 69 63 57 49 49
8x14 1400 661 1400 661 76 70 63 59 52 48
Notes:
1. All sound data rated in accordance with current Industry Standard
ARI 880, version 1998.
2. All sound power levels, dB re: 10 -12 Watts.
VAV-PRC008-EN LHS 15

Fan-Powered
Low-Height
Series
Performance
Data—
Acoustics
Inlet Attenuator Appurtenance Effects
Discharge Sound Effect* (dB) Radiated Sound Effect* (dB)
Fan 2 3 4 5 6 7 2 3 4 5 6 7
Matte-faced and foil-faced insulation, solid double-wall**
08SQ, 09SQ 0 0 0 1 0 0 -1 -3 -3 -7 -7 -6
10SQ 2 2 2 2 2 2 -2 -3 -5 -10 -12 -12
Closed-cell insulation
08SQ, 09SQ 0 1 0 0 0 0 -1 -1 -1 -4 -6 -4
10SQ 2 2 2 2 2 2 -1 -1 -2 -5 -9 -9
*Add to sound power, a negative effect represents a sound reduction, a positive effect represents a
sound increase
**Note: Attenuators on double-wall units have 1" foil-faced insulation. All edges are encapsulated
with metal.
Cabinet Lining Appurtenance Effects
Discharge Sound Effect* (dB) Radiated Sound Effect* (dB)
Fan 2 3 4 5 6 7 2 3 4 5 6 7
Solid double-wall
08SQ, 09SQ 0 0 0 0 0 0 -1 -2 2 11 17 19
10SQ 0 0 0 0 0 0 1 0 2 9 14 16
Closed-cell insulation
08SQ, 09SQ 0 0 0 0 0 0 2 3 6 7 8 12
10SQ 0 0 0 0 0 0 2 3 4 7 6 11
*Add to sound power, a negative effect represents a sound reduction, a positive effect represents a
sound increase
Heating Coil Appurtenance Effects
Discharge Sound Effect* (dB) Radiated Sound Effect* (dB)
Fan 2 3 4 5 6 7 2 3 4 5 6 7
Hot Water Coil**
08SQ, 09SQ 1 1 1 1 2 1 1 2 2 3 7 12
10SQ 1 2 2 1 2 1 1 1 1 2 4 8
Electric Heat**
08SQ, 09SQ -1 -2 -1 -1 -1 -1 -3 -1 1 1 7 7
10SQ 1 0 -1 -1 -1 0 2 4 3 4 6 9
* Add to sound power, a negative effect represents a sound reduction, a positive effect represents
a sound increase
**Radiated effect applies to “fan only” sound only. Do not apply to fan + valve sound.
LHS 16
VAV-PRC008-EN

Fan-Powered
Low-Height
Series
Dimensional
Data
LOW-HEIGHT SERIES COOLING ONLY (LSCF) FAN SIZES 08SQ & 09SQ
FAN
SIZE
08SQ
09SQ
09SQ
INLET SIZE INLET SIZE
DISCHARGE DIMENSIONS
Unit Wt
AVAILABILITY H
W
L
D Lbs
NOMINAL Ø (inches) NOMINAL Ø (mm)
A
B
(kg)
127, 152, 203 11.00" (279 mm) 26.00" (660 mm) 40.00" (1016 mm)
18.00" (457 mm) 10.00" (254 mm) 4.00" (102 mm) 86 (39)
6, 8
152, 203
96 (44)
8 x 14
203 x 355
4.50" (114 mm) 105 (47)
Optional Attenuator
Field Installed
4.
Actuator, Controller and
Fan Controls located in Enclosure
D
Primary
Airflow
Valve 5"
6.50"
(165 mm) m
32.00"
(813 mm)
Optional Attenuator
Field Installed
Airflow
Plenum Inlet
18.00"
(457 mm)
4.
Actuator, Controller and
Fan Controls located in Enclosure
Air
Valve
4.00
17.50"
(445 mm)
Rectangular Damper
8" x 14"
(203 mm x 356 mm)
Rectangular Damper Detail
5.00"
(127 mm)
L
4.
Actuator, Controller and
Fan Controls located in Enclosure
Fan Size
Filter Size
Atten Wt
Lbs
(kg)
08SQ 10" x 10" x 1"
09SQ (254 mm x 254 mm x 25 mm)
10 (4.5)
7.
NOTES:
1. Allow a minimum 6" (152 mm) plenum inlet clearance for
unducted installations.
2. Flanged discharge outlet accepts up to a 1" (25 mm) duct flange.
Airflow
Discharge Outlet
3. Bottom Access panel standard.
TOP VIEW
4. Control box enclosure provided with all control types.
W
5. Air valve centered between top and bottom panel.
6. All high & low voltage controls have same-side NEC jumpback
clearance. (Left-hand shown, right-hand/mirror image optional.)
7. Flange adds 2" to width and length of unit.
10.50"
(267 mm)
B
H
DISCHARGE VIEW
A
1.00"
(25 mm)
VAV-PRC008-EN LHS 17

Fan-Powered
Low-Height
Series
Dimensional
Data
LOW-HEIGHT SERIES COOLING (LSCF) FAN SIZE 10SQ
FAN INLET SIZE INLET SIZE
SIZE
AVAILABILITY
NOMINAL Ø (INCHES) NOMINAL Ø (mm)
10SQ
10SQ
8
8 x 14
203
203 x 356
DISCHARGE DIMENSIONS
UNIT WT
H W L
C
D WT LBS
A
B
(kg)
48.00" (1219 mm) 36.00" (914 mm) 38.00" (965 mm) 10.00" (254 mm) 4.00" (102 mm) 20.00" (508 mm) 120 (54)
17.50" (445 mm) 130 (59)
Optional Attenuator
Field Installed
2.
Optional Attenuator
ed
8.
8.
Actuator, Controller and
Fan Controls located in Enclosure
Fan Controls located in Enclosure
32.00"
32.00"
(813 mm) (813 mm)
18.00"
(457 mm)
Optional Attenuator
Field Installed
D
Airflow
Plenum Inlet
Primary
Airflow
Airflow
Plenum Inlet
Optional Attenuator
Field Installed
Rectangular Damper Detail
Rectangular Damper
8" x 14"
(203 mm x 356 mm)
17.50"
(445 mm)
5.00"
(127 mm)
L
9.
Fan Size
10SQ
Filter Size
10" x 16" x 1"
(254 mm x 406 mm x 25 mm)
Atten Wt
Lbs
(kg)
20 (9)
W
NOTES:
1. Allow a minimum 6" (152 mm) plenum inlet clearance for
unducted installations.
Airflow
Discharge Outlet
2. Filter location with optional Attenuator.
3. Attenuator-factory assembled, field installed.
4. Air valve centered between top and bottom panel.
TOP VIEW
5. Heating coil uninsulated. External insulation may be field
supplied and installed as required.
6. All high & low voltage controls have same-side NEC jumback
clearance. (Left-hand shown, right-hand/mirror image optional.)
7. Bottom Access panel standard.
H
B
10.50"
(267 mm)
8. Control box enclosure provided with all control types.
9. Flange adds 2" to width and length of unit.
A
LHS 18
DISCHARGE VIEW
VAV-PRC008-EN

Fan-Powered
Low-Height
Series
Dimensional
Data
LOW-HEIGHT SERIES HOT WATER (LSWF) FAN SIZES 08SQ & 09SQ
FAN
SIZE
08SQ
09SQ
09SQ
INLET SIZE
AVAILABILITY
NOMINAL Ø
INLET SIZE
NOMINAL Ø (mm)
6, 8 152, 203
8 x 14 203 x 355
H
DISCHARGE DIMENSIONS
W
L
A
B
26.00" (660 mm) 40.00" (1016 mm)
18.00" (457 mm)
Unit Wt
D Lbs
(kg)
4.00" (102 mm) 95 (43)
105 (48)
4.50" (114 mm) 114 (52)
Optional Attenuator
Field Installed
4.
Actuator, Controller an
Fan Controls located in Enc
32.00"
(813 mm)
4.
D
Primary
Airflow
Valve 5"
6.50"
(165 mm)
Optional Attenuator
Field Installed
Airflow
Plenum Inlet
18.00"
(457 mm)
Actuator, Controller and
Fan Controls located in Enclosure
Air
Valve
4.00
(102 mm)
17.50"
(445 mm)
Rectangular Damper
8" x 14"
(203 mm x 356 mm)
Rectangular Damper Detail
5.00"
(127 mm)
L
Actuator, Controller and
Fan Controls located in Enclosure
Fan Size
08SQ
09SQ
Filter Size
10" x 10" x 1"
(254 mm x 254 mm x 25 mm)
Atten Wt
Lbs
(kg)
10 (4.5)
8.
TOP VIEW
Water
Coil
6.80"
(173 mm)
NOTES:
10.50"
(267 mm)
Airflow
Discharge Outlet
A
DISCHARGE VIEW
W
B
1.00"
(25 mm)
VAV-PRC008-EN LHS 19
H
1. Allow a minimum 6" (152 mm) plenum inlet clearance for
unducted installations.
2. Flanged discharge outlet accepts up to a 1" (25 mm)
duct flange.
3. Bottom Access panel standard.
4. Control box enclosure provided with all control types.
5. Air valve centered between top and bottom panel.
6. Heating coil uninsulated. External insulation may be field
supplied and installed as required.
7. All high & low voltage controls have same-side NEC
jumpback clearance. (Left-hand shown, right-hand/mirror
image optional.)
8. Flange adds 2" to width and length of unit.

Fan-Powered
Low-Height
Series
Dimensional
Data
LOW-HEIGHT SERIES HOT WATER (LSWF) FAN SIZE 10SQ
FAN
INLET SIZE
INLET SIZE
DISCHARGE DIMENSIONS
UNIT WT
SIZE
AVAILABILITY AVAILABILITY H
W
L
C
D WT LBS
NOMINAL Ø (INCHES) NOMINAL Ø (mm)
A
B
(kg)
10SQ
10SQ
8
8 x 14
203
203 x 356
11.00" (279 mm) 48.00" (1219 mm) 36.00" (914 mm) 38.00" (965 mm) 10.00" (254 mm) 4.00" (102 mm) 20.00" (508 mm) 136 (62)
17.50" (445 mm) 146 (66)
lled
uator
alled
8.
Actuator, Controller and
Fan Controls located in Enclosure
8.
Actuator, Controller and
Fan Controls located in Enclosure
32.00"
32.00"
(813 mm) (813 mm)
2.
18.00"
(457 mm)
Optional Attenuator
Field Installed
D
Airflow
Plenum Inlet
Primary
Airflow
Optional Attenuator
Field Installed
Airflow
Plenum Inlet
Rectangular Damper Detail
Rectangular Damper
8" x 14"
(203 mm x 356 mm)
17.50"
(445 mm)
9.
8.
Actuator, Controller and
Fan Controls located in Enclosure
L
5.00"
(127 mm)
Fan Size
Filter Size
Atten Wt
Lbs
(kg)
10SQ
10" x 16" x 1"
(254 mm x 406 mm x 25 mm)
20 (9)
6.80"
(173 mm)
NOTES:
W
1. Allow a minimum 6" (152 mm) plenum inlet clearance for
unducted installations.
2. Filter location with optional Attenuator.
Airflow
Discharge Outlet
TOP VIEW
3. Attenuator-factory assembled, field installed.
4. Air valve centered between top and bottom panel.
5. Heating coil uninsulated. External insulation may be field
supplied and installed as required.
6. All high & low voltage controls have same-side NEC
jumpback clearance. (Left-hand shown, right-hand/mirror
image optional.)
7. Bottom Access panel standard.
8. Control box enclosure provided with all control types.
10.50"
(267 mm)
B
H
9. Flange adds 2" to width and length of unit.
A
DISCHARGE VIEW
LHS 20
VAV-PRC008-EN

H
Fan-Powered
Low-Height
Series
Dimensional
Data
COIL INFORMATION FOR LOW-HEIGHT SERIES 1-ROW COIL
FAN
SIZE
COIL
CONNECTION
A
B
L
H
W
08SQ .875" (22 mm) O.D. 7.75" (197 mm)
1.50" (38 mm)
18.00" (457 mm)
10.00" (254 mm)
6.80" (173 mm)
09SQ
10SQ
38.00" (965 mm)
W
3.40"
(86 mm)
INLET
B
AIR FLOW
7.81"
(198 mm)
A
AIR FLOW
ACCESS PANEL
A
B
Fan Size
08SQ
09SQ
INTERNAL
VOLUME
GAL (L)
OPERATING
WEIGHT
LBS (KG)
0.07 (.28) 10.4 (4.7)
1.00"
(25 mm)
10SQ
0.15 (.59) 16.4 (7.4)
2.00"
(51 mm)
NOTES:
1. Location of coil connections is determined by facing air stream. L.H. coil
connections shown, R.H. opposite.
2. Coil furnished with stub sweat connections.
3. Coils can be field-rotated for opposite connections. Note: Water inlet is always
the bottom connection.
4. Access panel is standard.
VAV-PRC008-EN LHS 21

H
Fan-Powered
Low-Height
Series
Dimensional
Data
COIL INFORMATION FOR LOW-HEIGHT SERIES 2-ROW COIL
FAN
SIZE
COIL
CONNECTION
A
B
L
H
W
08SQ
.875" (22 mm) O.D.
6.25" (159 mm)
2.00 (51 mm)
18.00" (457 mm)
10.00" (254 mm)
6.75" (171 mm)
09SQ
10SQ
38.00" (965 mm)
L
W
3.40"
(86 mm)
INLET
B
7.81"
(198 mm)
A
AIR FLOW
AIR FLOW
INLET
A
B
ACCESS PANEL
Fan Size
INTERNAL
VOLUME
GAL (L)
OPERATING
WEIGHT
LBS (KG)
1.00"
(25 mm)
08SQ
09SQ
0.11
(.45)
11.1
(5.0)
2.00"
(51 mm)
10SQ
0.24
(.94)
23.0
(10.4)
NOTES:
1. Location of coil connections is determined by facing air stream. L.H. coil
connections shown, R.H. opposite.
2. Coil furnished with stub sweat connections.
3. Coils can be field-rotated for opposite connections. Note: Water inlet is
always the bottom connection.
4. Access panel is standard.
LHS 22
VAV-PRC008-EN

Fan-Powered
Low-Height
Series
Dimensional
Data
LOW-HEIGHT SERIES ELECTRIC HEAT (LSEF) FAN SIZES 08SQ & 09SQ
FAN INLET SIZE INLET SIZE
DISCHARGE DIMENSIONS
Unit Wt
SIZE AVAILABILITY AVAILABILITY H
W
L
D
Lbs
NOMINAL Ø (INCHES) NOMINAL Ø (mm)
A
B
(kg)
08SQ 5, 6, 8 127, 152, 203 11.00" (279 mm) 26.00" (660 mm) 40.00" (1016 mm) 14.00" (356 mm) 9.00" (229 mm) 4.00" (102 mm) 101 (45.8)
09SQ 6, 8 152, 203
09SQ 8 x 14 203 x 355
4.50" (114 mm) 120 (54.4)
tional Attenuator
Field Installed
4.
Actuator, Controller and
Fan Controls located in Enclosure
32.00"
(813 mm)
4.
D
Primary
Airflow
Valve 5"
6.50"
(165 mm)
Optional Attenuator
Field Installed
Airflow
Plenum Inlet
18.00"
(457 mm)
Actuator, Controller and
Fan Controls located in Enclosure
Air
Valve
4.00
17.50"
(445 mm)
Rectangular Damper
8" x 14"
(203 mm x 356 mm)
Rectangular Damper Detail
5.00"
(127 mm)
L
4.
Actuator, Controller and
Fan Controls located in Enclosure
8.
Fan Size
08SQ
09SQ
Filter Size
10" x 10" x 1"
(254 mm x 254 mm x 25 mm)
Atten Wt
Lbs
(kg)
10 (4.5)
20.00"
(508 mm)
Electric
Heater
TOP VIEW
NOTES:
1. Allow a minimum 6" (152 mm) plenum inlet clearance for unducted installations.
2. Flanged discharge outlet accepts up to 1" (25 mm) duct flange.
3. Bottom Access panel standard.
4. Control box enclosure provided with all control types.
Airflow
Discharge Outlet
5. Air valve centered between top and bottom panel.
6. Heating coil uninsulated. External insulation may be field supplied and
installed as required.
7. All hight & low voltage controls have same-side NEC jumpback clearance.
(Left-hand shown, right-hand/mirror image optional.)
10.50"
(267 mm)
B
H
8. Flange adds 2" to width and length of unit.
A
DISCHARGE VIEW
VAV-PRC008-EN LHS 23

Fan-Powered
Low-Height
Series
Dimensional
Data
LOW-HEIGHT SERIES ELECTRIC (LSEF) FAN SIZE 10SQ
FAN INLET SIZE INLET SIZE
SIZE AVAILABILITY AVAILABILITY
NOMINAL Ø (INCHES) NOMINAL Ø (mm)
10SQ 8
203
10SQ 8 x14
203 x 356
H
W
11.00" (279 mm) 48.00" (1219 mm)
DISCHARGE DIMENSIONS
L
A
B
36.00" (914 mm) 19.00" (483 mm) 9.50" (241 mm)
UNIT WT
C D WT LBS
(kg)
17.50" (445 mm) 155 (70.3)
Optional Attenuator
Field Installed
Field Installed
8.
Actuator, Controller and
Fan Controls located in Enclosure
8.
Actuator, Controller and
Fan Controls located in Enclosure
32.00"
32.00"
(813 mm) (813 mm)
Optional Attenuator
Field Installed
Optional Attenuator
Field Installed
18.00"
(457 mm)
D
Airflow
Plenum Inlet
Primary
Airflow
C
Airflow
Plenum Inlet
Rectangular Dam
Rectangular Damper
8" x 14"
(203 mm x 356 mm)
8.
17.50"
(445 mm)
Actuator, Controller and
Fan Controls located in Enclosure
W
L
5.00"
(127 mm)
9.
Fan Size
10SQ
Filter Size
10" x 16" x 1"
(254 mm x 406 mm x 25 mm)
Atten Wt (Qty 2)
Lbs
(kg)
20 (9.1)
24.00"
(610 mm)
Terminal Box
Heater
Plenum Area
11.00"
(279 mm)
8.00"
(203 mm)
NOTES:
1. Allow a minimum 6" (152 mm) plenum inlet clearance for
unducted installations.
2. Filter location with optional Attenuator.
3. Attenuator-factory assembled, field installed.
Airflow
Discharge Outlet
TOP VIEW
4. Air valve centered between top and bottom panel.
5. Heating coil uninsulated. External insulation may be field supplied
and installed as required.
6. All high & low voltage controls have same-side NEC jumpback
clearance. (Left-hand shown, right-hand/mirror image optional.)
7. Bottom Access panel standard.
8. Control box enclosure provided with all control types.
H
B
10
(267
9. Flange adds 2" to width and length of unit.
LHS 24
A
DISCHARGE VIEW
VAV-PRC008-EN

Fan-Powered
Low-Height
Series
Mechanical
Specifications
MODELS LSCF, LSWF,
and LSEF
Low-height series fan-powered
terminal units.
LSCF – Cooling Only
LSWF – With Hot Water Coil
LSEF – With Electric Coil
CASING
22-gage galvanized steel. Hanger
brackets, bottom access, and plenum
inlet filter are provided as standard.
AGENCY LISTING
The unit is UL and Canadian UL
Listed as a room air terminal unit.
Control # 9N65.
ARI 880 Certified.
INSULATION
1/2" (12.7 mm) Matte-faced
Insulation—The interior surface of the
unit casing is acoustically and
thermally lined with ½-inch, 1.5 lb/ft 3
(12.7 mm, 24.0 kg/m 3 ) composite
density glass fiber with a high-density
facing. The insulation R-Value is 1.9. The
insulation is UL listed and meets NFPA-
90A and UL 181 standards. There are
no exposed edges of insulation
(complete metal encapsulation).
standards as well as bacteriological
standard ASTM C 665. There are no
exposed edges of insulation (complete
metal encapsulation).
1" (25.4 mm) Double-wall
Insulation—The interior surface of the
unit casing is acoustically and
thermally lined with a 1-inch, 1.0 lb./ft 3
(25.4 mm, 16.0 kg/m 3 ) composite
density glass fiber with high-density
facing. The insulation R-value is 3.8. The
insulation is UL listed and meets NFPA-
90A and UL 181 standards. The
insulation is covered by an interior
liner made of 26-gage galvanized steel.
All wire penetrations are covered by
grommets. There are no exposed
edges of insulation (complete metal
encapsulation).
3/8" (9.5 mm) Closed-cell
Insulation—The interior surface of
the unit casing is acoustically and
thermally lined with 3/8-inch, 4.4 lb/ft 3
(9.5 mm, 70.0 kg/m 3 ) closed-cell
insulation. The insulation is UL listed
and meets NFPA-90A and UL 181
standards. The insulation has an
R-value of 1.4. There are no exposed
edges of insulation (complete metal
encapsulation).
PRIMARY AIR VALVE
Air Valve Round—The primary air
inlet connection is an 18-gage
galvanized steel cylinder sized to fit
standard round duct. A multiple-point,
averaging flow sensing ring is
provided with balancing taps for
measuring +/-5% of unit cataloged
airflow. An airflow-versus-pressure
differential calibration chart is
provided. The damper blade is
constructed of a closed-cell foam seal
that is mechanically locked between
two 22-gage galvanized steel disks. The
damper blade assembly is connected
to a cast zinc shaft supported by selflubricating
bearings. The shaft is cast
with a damper position indicator. The
valve assembly includes a mechanical
stop to prevent over-stroking. At 4.0 in.
wg, air valve leakage does not exceed
1% of cataloged airflow.
Air Valve Rectangular—Inlet collar is
constructed of 22-gage galvanized
steel sized to fit standard rectangular
duct. An integral multiple-point,
averaging flow-sensing ring provides
primary airflow measurement within +/
-5% of unit cataloged airflow. Typical
inlet conditions: flex duct and 90° inlets
to the damper. Damper is 22-gage
galvanized steel with polyolefin foam
seal. The damper blade assembly is
supported by self-lubricating bearings.
The shaft is cast with a damper
position indicator. The valve assembly
includes a mechanical stop to prevent
over-stroking. At 3.0 in. wg, air valve
leakage does not exceed 44 cfm
(21 L/s).
Fan–Inlet Combinations:
LSXF
Inlet 08Q 09SQ 10SQ
5" X
6" X X
8" X X X
8x14" X X
FAN MOTOR
PSC—Single-speed, direct-drive,
permanent split capacitor type.
Thermal overload protection provided.
Motors will be designed specifically for
use with an open SCR. Motors will be
single-speed with standard SCR for
speed control. Motors will
accommodate anti-backward rotation
at start up. Motor and fan assembly is
isolated from terminal unit.
ECM—Electrically Commutated Motor
is desinged for high-efficient operation
with over 70% efficiency throughout
the operating range.
FAN SPEED CONTROL
Variable Speed Control Switch
(SCR)—The SCR speed control device
is provided as standard and allows the
operator infinite fan speed adjustment
so the fan output may be modified to
achieve exact cfm requirements.
TRANSFORMER
The 50 VA transformer is factoryinstalled
in the fan control box to
provide 24 VAC for controls.
DISCONNECT SWITCH
1" (25.4 mm) Matte-faced
Insulation—The interior surface of
the unit casing is acoustically and
thermally lined with 1-inch, 1.0 lb/ft 3
(25.4 mm, 16.0 kg/m 3 ) composite
density glass fiber with a high-density
facing. The insulation R-Value is 3.85.
The insulation is UL listed and meets
NFPA-90A and UL 181 standards. There
are no exposed edges of insulation
(complete metal encapsulation).
1/2" (12.7 mm) Foil-faced
Insulation—The interior surface of
A toggle disconnect is provided as
the unit casing is acoustically and
standard and allows the operator to
thermally lined with ½-inch, 1.5 lb/ft 3
(12.7 mm, 24.0 kg/m 3 ) density glass
turn the unit on or off by toggling to
the appropriate setting. This switch
fiber with foil facing. The insulation
breaks both legs of power to the fan
R-Value is 2.1. The insulation is UL
listed and meets NFPA-90A and UL 181
and the electronic controls (if
applicable). Not provided on LSEF with
standards as well as bacteriological
pneumatic controls
standard ASTM C 665. There are no
exposed edges of insulation (complete
OUTLET CONNECTION
metal encapsulation).
Flanged Connection—A
1" (25.4 mm) Foil-faced
rectangular opening on the unit
Insulation—The interior surface of
discharge to accept a 90° flanged
the unit casing is acoustically and
ductwork connection.
thermally lined with 1-inch, 1.5 lb/ft 3
FILTER
(25.4 mm, 24.0 kg/m 3 ) density glass
A 1" (25 mm) filter is provided on the
fiber with foil facing. The insulation
plenum inlet and attaches to the unit
R-Value is 4.1. The insulation is UL
listed and meets NFPA-90A and UL 181
with a filter frame.
connected to a solid metal shaft
VAV-PRC008-EN LHS 25

Fan-Powered
Low-Height
Series
Mechanical
Specifications
ACCESS PANEL
Internal access to unit is achieved
through the removable bottom access
panel.
HOT WATER COIL
Series Water Coils—factory-installed
on the plenum inlet.
The coil has 1-row with 144 aluminumplated
fins per foot (.305 m) and, if
needed, 2-row with 144 aluminumplated
fins per foot (.305 m). Full fin
collars provided for accurate fin
spacing and maximum fin-tube
contact. The 3/8" (9.5 mm) OD seamless
copper tubes are mechanically
expanded into the fin collars. Coils are
proof tested at 450 psig (3102 kPa) and
leak tested at 300 psig (2068 kPa) air
pressure under water. Coil connections
are brazed with left-hand configuration.
ELECTRIC HEAT COIL
The electric heater is a factory-provided
and -installed, UL recognized
resistance open-type heater. It also
contains a disc-type automatic pilot
duty thermal primary cutout, and
manual reset load carrying thermal
secondary device. Heater element
material is nickel-chromium. The heater
terminal box is provided with 7/8"
(22 mm) knockouts for customer power
supply. Terminal connections are
plated steel with ceramic insulators.
Heater control access is on the
discharge side of the unit. All fanpowered
units with electric reheat are
single-point power connections.
ELECTRIC HEAT OPTIONS
Magnetic Contactor—An optional
electric heater 24-volt contactor for use
with direct digital control (DDC) or
analog-electronic controls.
Mercury Contactor—An optional
electric heater 24-volt contactor for use
with direct digital control (DDC) or
analog-electronic controls.
P.E. Switch with Magnetic
Contactor—This optional switch and
magnetic contactor is for use with
pneumatic controls.
P.E. Switch with Mercury
Contactor—This optional switch and
mercury contactor is for use with
pneumatic controls.
Airflow Switch—An optional air
pressure device designed to disable
the heater when the system fan is off.
Power Fuse—If power fuse is chosen
with a unit with electric heat, then a
safety fuse located in the line of power
of the electric heater to prevent power
surge damage to the electric heater.
Any electric heat unit with a calculated
MCA greater than or equal to 30 will
have a fuse provided
Disconnect Switch—An optional
factory-provided door interlocking
disconnect switch on the heater control
panel disengages primary voltage to
the terminal.
UNIT CONTROLS SEQUENCE OF
OPERATION
The controller will start and run the fan
continuously during the occupied
mode and intermittently during the
unoccupied mode. Upon a further call
for heat, any hot water or electric heat
associated with the unit is enabled.
DIRECT DIGITAL CONTROLS
DDC Actuator—Trane 3-wire,
24-VAC, floating-point control actuator
with linkage release button. Torque is
35 in-lb minimum and is non-spring
return with a 90-second drive time.
Travel is terminated by end stops at
fully-opened and -closed positions. An
integral magnetic clutch eliminates
motor stall.
Direct Digital Controller—The
microprocessor based terminal unit
controller provides accurate, pressureindependent
control through the use
of a proportional integral control
algorithm and direct digital control
technology. The controller, named the
Unit Control Module (UCM), monitors
zone temperature setpoints, zone
temperature and its rate of change,
and valve airflow using a differential
pressure signal from the pressure
transducer. Additionally, the controller
can monitor either supply duct air
temperature or CO 2
concentration via
appropriate sensors. The controller is
provided in an enclosure with 7/8"
(22 mm) knockouts for remote control
wiring. A Trane UCM zone sensor is
required.
DDC Zone Sensor—The UCM
controller senses zone temperature
through a sensing element located in
the zone sensor. In addition to the
sensing element, zone sensor options
may include an externally-adjustable
setpoint, communications jack for use
with a portable edit device, and an
override button to change the individual
controller from unoccupied to occupied
mode. The override button has a cancel
feature that will return the system to
unoccupied. Wired zone sensors utilize
a thermistor to vary the voltage output
in response to changes in the zone
temperature. Wiring to the UCM
controller must be 18- to 22-awg.
twisted pair wiring. The setpoint
adjustment range is 50–88ºF (10–31°C).
Depending upon the features available
in the model of sensor selected, the
zone sensor may require from a 2-wire
to a 5-wire connection. Wireless zone
sensors report the same zone
information as wired zone sensors, but
do so using radio transmitter
technology. Therefore with wireless,
wiring from the zone sensor to the UCM
is unnecessary.
Digital Display Zone Sensor with
Liquid Crystal Display (LCD)—The
digital display zone sensor contains a
sensing element, which sends a signal
to the UCM. A Liquid Crystal Display
(LCD) displays setpoint or space
temperature. Sensor buttons allow the
user to adjust setpoints, and allow space
temperature readings to be turned on or
off. The digital display zone sensor also
includes a communication jack for use
with a portable edit device, and an
override button to change the UCM
from unoccupied to occupied. The
override button has a cancel feature,
which returns the system to
unoccupied mode.
Trane LonTalk—The controller is
designed to send and receive data using
SCC LonTalk profile. Current unit status
conditions and setpoints may be
monitored and/or edited from any of
several LonTalk-compatible systemlevel
controllers
ANALOG ELECTRONIC CONTROLS
Analog Actuator—A Trane 3-wire,
24-VAC, floating-point control actuator
with linkage release button. Torque is
35 in-lb minimum and is non-spring
return with a 90-second drive time.
Travel is terminated by end stops at
fully-opened and -closed positions. An
integral magnetic clutch eliminates
motor stall.
Analog Electronic Controller—
The controller consists of a circuit board
that offers basic VAV unit operation and
additional override functions and
operates using 24 VAC power. The
LHS 26
VAV-PRC008-EN

Fan-Powered
Low-Height
Series
Mechanical
Specifications
controller uses a capacitive type
pressure transducer to maintain
consistent air delivery regardless of
system pressure changes. The
enclosure with 7/8" (22 mm) knockouts
for remote control wiring. A Trane
electronic zone sensor is required.
Analog Electronic Thermostat—
This single-temperature, wall-mounted
electronic device utilizes a thermistor
to vary the voltage output in response
to changes in the zone temperature.
Connections to the VAV unit circuit
board are made using standard threeconductor
thermostat wire. The
setpoint adjustment range is 63–85ºF
(17–29°C). The sensor is available in
two models. One model has a
concealed, internally-adjustable
setpoint. The other model has an
externally-adjustable setpoint.
PNEUMATIC CONTROLS
Normally Open Actuator—
Pneumatic 3 to 8 psig (20 to 55 kPa)
spring-range pneumatic actuator.
3011 Pneumatic Volume Regulator
(PVR)—The regulator is a thermostat
reset velocity controller, which
provides consistent air delivery within
5% of cataloged flow down to 18% of
unit cataloged cfm, independent of
changes in system static pressure.
Factory-calibrated, field-adjustable
setpoints for minimum and maximum
flows. Average total unit bleed rate,
excluding thermostat, is 28.8 scim at
20 psig (7.87 ml/min at 138 kPa) supply.
UNIT OPTIONS
Power Fuse (LSCF, LSWF)—
Optional fuse is factory-installed in the
primary voltage hot leg.
HOT WATER VALVES
Two-Position Valve—The valve is a
field-adaptable, 2-way or 3-way
configuration and ships with a cap to
be field-installed when configured as a
2-way valve. All connections are
National Pipe Thread (NPT). The valve
body is forged brass with a stainless
steel stem and spring. Upon demand,
the motor strokes the valve. When the
actuator drive stops, a spring returns
the valve to its fail-safe position.
Flow Capacity – 1.17 Cv
Overall Diameter – ½" NPT
Close-off Pressure – 30 psi (207 kPa)
Flow Capacity – 3.0 Cv
Overall Diameter – 3/4" NPT
Close-off Pressure – 14.5 psi (100 kPa)
Flow Capacity – 6.4 Cv
Overall Diameter – 1" NPT
Close-off Pressure – 9 psi (62 kPa)
Maximum Operating Fluid
Temperature – 203ºF (95ºC)
Maximum system pressure – 300 psi
(2067 kPa). Maximum static pressure –
300 psi (2067 kPa)
Electrical Rating – 7 VA at 24 VAC,
6.5 Watts, 50/60 Hz
8 feet (2.44 m) of plenum rated wire
lead is provided with each valve.
Proportional Water Valve—The
valve is a field-adaptable, 2-way or 3-
way configuration and ships with a cap
over the bottom port. This configures
the valve for 2-way operation. For
3-way operation, remove the cap. The
valve is linear equal percentage
design. The intended fluid is water or
water and glycol (50% maximum
glycol). The actuator is a synchronous
motor drive. The valve is driven to a
predetermined position by the UCM
controller using a proportional plus
integral control algorithm. If power is
removed, the valve stays in its last
position. The actuator is rated for
plenum applications under UL 94-5V
and UL 873 standards.
Pressure and Temperature Ratings –
The valve is designed and tested in full
compliance with ANSI B16.15 Class
250 pressure/temperature ratings,
ANSI B16.104 Class IV control shutoff
leakage, and ISA S75.11 flow
characteristic standards.
Flow Capacity – 0.7 Cv, 2.2 Cv, 3.8 Cv,
and 6.6 Cv
Overall Diameter – ½" NPT, ¾" NPT
(6.6 Cv)
Maximum Allowable Pressure – 300
psi (2068 kPa)
Maximum Operating Fluid
Temperature – 200ºF (93°C)
Maximum Close-off Pressure – 55 psi
(379 kPa)
Electrical Rating – 6 VA at 24 VAC.
10 feet (3.05 m) of plenum rated
22-gage wire for connection.
Terminations are #6 stabs.
VAV-PRC008-EN LHS 27

Controls
Table of
Contents
Trane DDC
Control Options C 3
General Logic C 4
Reheat Control C 5 – 7
Control Drawings C 8 – 17
Accessories C 18 – 25
Trane LonMark DDC VAV Controller
Introduction C 26
Control Options C 27
Features and Benefits C 28 – 29
Controller Logic C 30 – 32
Ventilation Control C 33
Flow Tracking Control C 34
Control Drawings C 35 – 38
Accessories C 39
Data List C 40
Analog
Control Options C 41
Control Drawings C 42 – 45
Accessories C 46 – 47
C 1

Controls
Table of
Contents
Pneumatic
Control Options C 48
Control Drawings C 49 – 61
Accessories C 62 – 63
Controls Specifications
Specifications 64 – 67
C 2

Controls—
DDC
Options
Controls By Others (All Unit Types)
Unit Heat Control Description Page #
DD00 Trane Actuator for Field-Installed DDC Controls C 8
FM00 Factory Installation of Customer Supplied Actuators and DDC Controls C 9
FM01 Trane Actuator w/ Factory Installation of Customer-Supplied DDC Controls C 9
ENON No Controls or Actuator—Field-Installed DDC or Analog Controls —
Single-Duct Terminal Unit (VCCF, VCWF, and VCEF)
Unit Heat Control Description Page #
DD01 Cooling Only C 10
DD02 Cooling With Remote Normally-Closed On/Off Hot Water Valve (Normally-Open Outputs) C 10
Cooling Only DD03 Cooling With Remote Proportional Hot Water Valve with Optional Spare On/Off Output C 10
(VCCF) DD04 Cooling With Remote Staged On/Off Electric Heat C 10
DD05 Cooling With Remote Pulse-Width Modulation Electric Heat C 10
DD07 Cooling With Remote Normally-Open On/Off Hot Water Valve (Normally-Closed Output) C 10
Hot Water DD02 Cooling With Normally-Closed On/Off Hot Water Valve (Normally-Open Outputs) C 11
(VCWF) DD03 Cooling With Proportional Hot Water Valve with Optional Spare On/Off Output C 11
DD07 Cooling With Normally-Open On/Off Hot Water Valve (Normally-Closed Output) C 11
Electric DD04 Cooling With Staged On/Off Electric Heat C 12
(VCEF) DD05 Cooling WIth Pulse-Width Modulation Electric Heat C 12
Dual-Duct Terminal Unit (VDDF)
Unit Heat Control Description Page #
None DD00 Trane Actuator for Field-Installed DDC Controls C 8
(VDDF) DD01 Cooling (No Remote Heat) and Heating Control C 13
DD08 Cooling (No Remote Heat) and Heating—Constant-Volume Control C 14
Fan-Powered Terminal Units with PSC Motor (VPCF, VPWF, VPEF, VSCF, VSWF, and VSEF)
Low-Height Fan-Powered Terminal Units with PSC Motor (LPCF, LPWF, LPEF, LSCF, LSWF, and LSEF)
Unit Heat Control Description Page #
DD01 Cooling Only C 15
DD02 Cooling With Remote Normally-Closed On/Off Hot Water Valve with Normally-Open Outputs C 16
Cooling Only DD03 Cooling With Remote Proportional Hot Water Valve C 16
(VPCF, VSCF, DD04 Cooling With Remote Staged On/Off Electric Heat C 15
LPCF, LSCF) DD05 Cooling With Remote Pulse-Width Modulation Electric Heat C 15
DD07 Cooling With Remote Normally-Open On/Off Hot Water Valve with Normally-Closed Outputs C 16
Hot Water DD02 Cooling With Normally-Closed On/Off Hot Water Valve with Normally-Open Outputs C 16
(VPWF, VSWF DD03 Cooling With Proportional Hot Water Valve C 16
LPWF, LSWF) DD07 Cooling With Normally-Open On/Off Hot Water Valve with Normally-Closed Outputs C 16
Electric DD04 Cooling With Staged On/Off Electric Heat C 15
(VPEF, VSEF DD05 Cooling With Pulse-Width Modulation Electric Heat C 15
LPEF, LSEF)
Fan-Powered Terminal Units with ECM (VPCF, VPWF, VPEF, VSCF, VSWF, and VSEF)
Unit Heat Control Description Page #
DD01 Cooling Only C 17
DD02 Cooling With Remote Normally-Closed On/Off Hot Water Valve with Normally-Open Outputs C 17
Cooling Only DD03 Cooling With Remote Proportional Hot Water Valve C 17
(VPCF, VSCF) DD04 Cooling With Remote Staged On/Off Electric Heat C 17
DD05 Cooling With Remote Pulse-Width Modulation Electric Heat C 17
DD07 Cooling With Remote Normally-Open On/Off Hot Water Valve with Normally-Closed Outputs C 17
Hot Water DD02 Cooling With Normally-Closed On/Off Hot Water Valve with Normally-Open Outputs C 17
(VPWF, VSWF) DD03 Cooling With Proportional Hot Water Valve C 17
DD07 Cooling With Normally-Open On/Off Hot Water Valve with Normally-Closed Outputs C 17
Electric DD04 Cooling With Staged On/Off Electric Heat C 17
(VPEF, VSEF) DD05 Cooling With Pulse-Width Modulation Electric Heat C 17
VAV-PRC008-EN C 3

Controls—
DDC
General
Logic
Trane DDC–UCM
Control Logic—
DDC controllers are today’s industry
standard. DDC controllers provide
system-level data used to optimize
system performance. Variables such as
occupied/unoccupied status, minimum
and maximum airflow setpoints,
temperature and temperature
setpoints, valve position, fan status (on
or off, and mode of operation: series or
parallel), reheat status (on or off), box
type and air valve size, temperature
correction offsets, flow correction
values, ventilation fraction, etc. are
available on a simple twisted-shielded
wire pair.
Trane DDC controllers provide Tranedesigned,
solid-state electronics
intended specifically for VAV
temperature control in space comfort
applications. DDC control capabilities
include:
• Proportional plus integral control loop
algorithm for determining required
airflow needed to control room
temperature. Airflow is limited by
active minimum and maximum
airflow setpoints.
• Pressure-independent (PI) operation,
which automatically adjusts valve
position to maintain required airflow.
In certain low-flow situations or in
cases where the flow measurement
has failed, the DDC controller will
Flow Sensor Signal vs. Airflow Delivery
5
operate in a pressure-dependent (PD)
mode of operation.
• Cooling and heating control action of
air valve. In cooling control action, the
DDC controller matches cooling airflow
to cooling load. In heating control
action, the DDC controller matches the
heating airflow to control heating load.
The DDC controller will automatically
change over to cooling control action if
the supply air temperature is below the
room temperature and will
automatically change over to heating
control action if the supply air
temperature is 10°F or more above the
room temperature. If the supply air
temperature is between the room
temperature and the room
temperature plus 10°F, then the DDC
controller will provide the active
minimum airflow. The DDC controller
first chooses the Tracer Summitsupplied
supply air temperature value
to use for auto changeover. If this is not
available, it uses the temperature
provided by the optional auxiliary
temperature sensor. If this is also not
available, it uses the heating/cooling
mode assigned by Tracer Summit or
the DDC controller’s service tool
(Everyware TM or Rover TM V4).
• Multiple reheat control options
including staged electric, staged hotwater
(normally on or normally off),
proportional hot-water, and slow
pulsed width modulation. Modulating
reheat options utilize a separate reheat
proportional-plus-integral control loop
from that controlling airflow into the
room. Staged reheat options utilize a
control algorithm based on heating
setpoint and room temperature.
• 24 VAC binary input that can be
configured as a generic input or as
occupancy input. When the DDC
controller is operation with Tracer
Summit, the status of the input is
provided to Tracer Summit for its
action. In stand-alone operation and
when configured for an occupancy
input, the input will control occupancy
status of the DDC controller.
• Auxiliary temperature analog input
that can be configured for an auxiliary
temperature sensor or a 2-to-10 VDC
CO 2
sensor. When configured for
temperature, the value of the input is
used as status-only by Tracer Summit if
Tracer Summit is providing a supply air
temperature to the DDC controller.
Otherwise, the input will be used for
determining control action of the DDC
controller. When configured for a CO 2
sensor, the value of the input is used as
a status-only input by Tracer Summit.
• Dual-duct support with two DDC
controllers. One DDC controller
controls the cooling air valve and the
other controller controls the heating air
valve. With constant-volume
sequences, the discharge air volume is
held constant by controlling discharge
air volume with the heating UCM.
1
4" 5" 6" 8" 10" 12" 14" 16"
Flow Sensor DP (In. wg)
0.1
C 4
0.01
10 100 1,000 10,000
Cfm
Note: Flow sensor DP (in. wg) is measured at the flow ring to aid in system balancing and commissioning. See "Valve/Controller Airflow
Guidelines" in each section for unit performance.
VAV-PRC008-EN

Controls—
DDC
DDC
Reheat
Control
DDC Remote Heat
Control Options
When heat is added to the primary air
at the VAV unit before it enters the
zone, the air is said to be reheated. The
operating characteristics of the four
basic types of VariTrane DDC terminal
reheat are discussed.
Single-Duct: On/Off Hot Water
Reheat—Three stages of on/off hot
water reheat are available. The water
valves used are 2-position and are
either fully-opened or fully-closed. The
heating minimum airflow setpoint is
enabled during reheat.
Stage 1 energizes when the space
temperature is at or below the heating
setpoint. When the zone temperature
rises above the active heating setpoint
by 0.5°F (0.28°C), stage 1 is deenergized.
Stage 2 energizes when the
space temperature is 1°F (0.56°C) or
more below the active heating
setpoint, and is de-energized when the
space temperature is 0.5°F (0.28°C)
below the active heating setpoint.
Stage 3 energizes when the zone
temperature is 2°F (1.11°C) or more
below the active heating setpoint, and
de-energizes when the space
temperature is 1.5°F (0.83°C) below the
active heating setpoint. When reheat is
de-energized, the cooling minimum
airflow setpoint is activated.
VCEF
Single-Duct: Proportional Hot
Water Reheat—Proportional hot
water reheat uses 3-wire floating-pointactuator
technology. The heating
minimum airflow setpoint is enabled
during reheat.
The water valve opens as space
temperature drops below the heating
setpoint. Water valve position is
dependent on both the degree that
space temperature is below the active
heating setpoint and the time that the
space temperature has been below the
active heating setpoint. If not already
closed, the water valve fully closes
when the zone temperature rises
above the active heating setpoint by
0.5 °F (0.28 °C). An additional on/off
remote heat output is available and
energized when the proportional valve
is driven 100% open and de-energized
when the proportional valve reaches
50% open. When reheat is deenergized,
the cooling minimum
airflow setpoint is activated.
Single-Duct: On/Off Electric
Reheat—Three stages of staged
electric reheat are available. The
heating minimum airflow setpoint is
enabled during reheat.
Stage 1 is energized when the space
temperature falls below the active
heating setpoint and minimum airflow
requirements are met. When the zone
temperature rises above the active
heating setpoint by 0.5°F (0.28°C),
stage 1 is de-energized. Stage 2
energizes when the space temperature
is 1°F (0.56°C) or more below the active
heating setpoint, and is de-energized
when the space temperature is 0.5°F
(0.28°C) below the active heating
setpoint. Stage 3 energizes when the
zone temperature is 2°F (1.11°C) or
more below the active heating
setpoint, and de-energizes when the
space temperature is 1.5°F (0.83°C)
below the active heating setpoint.
When reheat is de-energized, the
cooling minimum airflow setpoint is
activated.
Single-Duct: Pulse-Width
Modulation of Electric Heat—
Electric heat is modulated by
energizing for a portion of a threeminute
time period. The heating
minimum airflow setpoint is enabled
during reheat. This allows exact load
matching for energy efficient
operation, and optimum zone
temperature control. One or two
stages can be used.
The amount of reheat supplied is
dependent on both the degree that
space temperature is below the active
heating setpoint and the time that the
space temperature has been below the
active heating setpoint. If not already
off, reheat de-energizes when the zone
temperature rises more than 0.5°F
(0.28°C) above the heating setpoint.
The Stage 1 “on” time is proportional
to the amount of reheat required. For
example, when 50% of stage 1
capacity is required, reheat is on for 90
seconds and off for 90 seconds. When
75% of stage 1 capacity is required,
reheat is on for 135 seconds and off for
45 seconds. When 100% of stage 1
capacity is required, reheat is on
continuously.
Stage 2 uses the same “on” time logic
as stage 1 listed above, except stage 1
is always energized. For example,
when 75% of unit capacity is required,
stage 1 is energized continuously, and
stage 2 is on for 90 seconds and off for
90 seconds. When reheat is deenergized,
the cooling minimum
airflow setpoint is activated.
VAV-PRC008-EN C 5

Controls—
DDC
DDC
Reheat
Control
Fan-Powered Terminal Units:
On/Off Hot Water Reheat—Two
stages of on/off hot water reheat are
available. The water valves used are
2-position and are either fully-opened
or fully-closed. The heating minimum
airflow setpoint is enabled during
reheat.
On parallel-configured fan-powered
units, the fan is energized when the
space temperature falls below the
active fan on/off point (active heating
setpoint plus fan offset). The parallel
fan is turned off when the space
temperature rises above the active fan
on/off point (active heating setpoint
plus fan offset) plus 0.5°F (0.28°C).
Series configured fan-powered
terminal units utilize continuous fan
operation during all occupied settings
and while unoccupied when minimum
airflows are being enforced.
When the zone temperature falls below
the active heating setpoint, the UCM
modulates the primary airflow to the
minimum heating airflow setpoint.
Stage 1 energizes when the space
temperature is below the active
heating setpoint, and is de-energized
when the space temperature is 0.5°F
(0.28°C) above the active heating
setpoint. Stage 2 energizes when the
zone temperature is 1°F (0.56°C) or
more below the active heating
setpoint, and de-energizes when the
space temperature is 0.5°F (0.28°C)
below the active heating setpoint.
When reheat is de-energized, the
cooling minimum airflow setpoint is
activated.
Fan-Powered Terminal Units:
Proportional Hot Water Reheat—
Proportional hot water reheat uses
3-wire floating-point-actuator
technology. The heating minimum
airflow setpoint is enabled during
reheat.
On parallel-configured fan-powered
units, the fan is energized when the
space temperature falls below the
active fan on/off point (active heating
setpoint plus fan offset). The parallel
fan is turned off when the space
temperature rises above the active fan
on/off point (active heating setpoint
plus fan offset) plus 0.5°F (0.28°C).
Series-configured fan-powered
terminal units utilize continuous fan
operation during all occupied settings
and while unoccupied when minimum
airflows are being enforced.
VPEF
VSEF
When the zone temperature falls below
the active heating setpoint, the UCM
modulates the primary airflow to the
minimum heating airflow setpoint.
The water valve opens as space
temperature drops below the heating
setpoint. The degree to which the hot
water valve opens is dependent on
both the degree that space
temperature is below the active
heating setpoint and the time that the
space temperature has been below the
active heating setpoint. If not already
closed, the water valve fully closes
when the zone temperature rises
above the active heating setpoint by
0.5 °F (0.28 °C). When reheat is deenergized,
the cooling minimum
airflow setpoint is activated.
Fan-powered Terminal Units:
On/Off Electric Reheat—Two stages
of staged electric reheat are available.
The heating minimum airflow setpoint
is enabled during reheat.
On parallel-configured fan-powered
units, the fan is energized when the
space temperature falls below the
active fan on/off point (active heating
setpoint plus fan offset). The parallel
fan is turned off when the space
temperature rises above the active fan
on/off point (active heating setpoint
plus fan offset).
Series-configured fan-powered
terminal units utilize the continuous fan
operation during all occupied settings
and while unoccupied when minimum
airflows are being enforced.
When the zone temperature falls below
the active heating setpoint, the UCM
modulates the primary airflow to the
minimum heating airflow setpoint.
Stage 1 energizes when the space
temperature is below the active
heating setpoint, and is de-energized
when the space temperature rises
0.5°F (0.28°C) above the active heating
setpoint. Stage 2 energizes when the
space temperature is 1.0°F (0.56°C) or
more below the active heating
setpoint, and is de-energized when the
space temperature is 0.5°F (0.28°C)
below the active heating setpoint.
When reheat is de-energized, the
cooling minimum airflow setpoint is
activated.
Fan-powered Terminal Units:
Pulse-Width Modulation of
Electric Heat—Electric heat is
modulated by energizing for a portion
of a three-minute time period. The
heating minimum airflow setpoint is
enabled during reheat. This allows
exact load matching for energy
efficient operation, and optimum zone
temperature control. One or two stages
can be used.
On parallel-configured fan-powered
units, the fan is energized when the
space temperature falls below the
active fan on/off point (active heating
setpoint plus fan offset). The parallel
fan is turned off when the space
temperature rises above the active fan
on/off point (active heating setpoint
plus fan offset) plus 0.5°F (0.28°C).
C 6
VAV-PRC008-EN

Controls—
DDC
DDC
Reheat
Control
Series-configured fan-powered
terminal units utilize the continuous fan
operation during all occupied settings
and while unoccupied when minimum
airflows are being enforced.
When the zone temperature falls below
the active heating setpoint, the UCM
modulates the primary airflow to the
minimum heating airflow setpoint.
The amount of reheat supplied is
dependent on both the degree that
space temperature is below the active
heating setpoint and the time that the
space temperature has been below the
active heating setpoint. If not already
off, reheat de-energizes when the
space temperature rises 0.5°F (0.28°C)
above the active heating setpoint. The
Stage 1 “on” time is proportional to the
amount of reheat required. For
example, when 50% of stage 1
capacity is required, reheat is on for 90
seconds and off for 90 seconds. When
75% of stage 1 capacity is required,
reheat is on for 135 seconds and off
for 45 seconds. When 100% of stage 1
capacity is required, reheat is on
continuously.
Stage 2 uses the same “on” time logic
as stage 1 listed above, except stage 1
is always energized. For example,
when 75% of unit capacity is required,
stage 1 is energized continuously, and
stage 2 is on for 90 seconds and off for
90 seconds. When reheat is deenergized,
the cooling minimum
airflow setpoint is activated. When
reheat is de-energized, the cooling
minimum airflow setpoint it activated.
VAV-PRC008-EN C 7

Controls—
DDC
Control
Drawings
DD00—Available for all VariTrane Units
(Trane actuator for field-installed DDC controls)
A unit controller is not provided. The air damper actuator is provided with an integral screw terminal block.
The fan contactor (fan-powered units), 24-VAC control power transformer (optional for single- and dual-duct
units), and factory-installed electric heater contactor wires are attached to the outside of the unit for field
connection of controls. A second actuator is provided with an integral screw terminal for dual-duct units.
CCW
24-VAC
Damper Controls
By Others
COM
CW
M
Damper
Actuator
Load: 4 VA
24-VAC to
Customer
Controls
Y
BL
Line Voltage
FAN RELAY
Transformer
24 VAC, 50 VA
2
1
2
Fan
3
Load: 6.5 VA
24-VAC Fan/Staged
Heat Controls
HEATER CONTROL BOX
1
2
3
4
5
C
1st
2nd
3rd
4
Load: 10 VA (MAGN)
Load: 12 VA (MERC)
CCW
5.
24-VAC
Damper Controls
By Others
COM
CW
M
Damper
Actuator
Load: 4 VA
NOTES:
1. Factory-installed
Field Wiring
Optional or installed by others
2.
Located in Heater Terminal Box for electric heat on single-duct units.
Located in Control Box for cooling only and hot water heat on single-duct units.
Located in Control Box on all fan-powered units.
3.
Only available with fan-powered units.
4. Located in Heater Terminal box.
C 8
5.
Only available with dual-duct units.
VAV-PRC008-EN

Controls—
DDC
Control
Drawings
Available on all VariTrane Units
FM00 – Customer-supplied actuator and DDC controller factory-installed.
FM01 – Trane actuator and customer-supplied DDC controller factory-installed
All customer furnished controllers and actuators are installed and wired per control manufacturer's specifications. Metal control
enclosure is standard.
CCW
COM
Actuator
Customer-furnished
or Trane-supplied
CW
Fan
Relay
Trane-supplied
(Fan-powered only)
24 VAC
BL
Com
Transformer
Y
Customer-furnished
Controller
1st stage - 24 VAC
2nd stage - 24 VAC
3rd stage - 24 VAC
Electric
Reheat
Contactors
Trane-supplied
24 VAC, 50va
Standard – (Fan-powered)
Optional –
LO
Airflow
Sensor
HI
Trane-supplied
Hot Water
Reheat
Optional
Trane-supplied
water valve
field-wired
to controller
NOTES:
1. Factory-installed
Field Wiring
Optional or installed by others
2. NEMA-1 Enclosure provided.
VAV-PRC008-EN C 9

Controls—
DDC
Control
Drawings
VCCF—Single-Duct Terminal Units
(Normal Operation: Cooling Only with Reheat Capabilities)
DD01 – Cooling Only
DD02 – Cooling with Remote Normally-Closed On/Off Hot Water Valve (Normally-Open Outputs)
DD03 – Cooling with Remote Proportional Hot Water Valve with Optional Spare On/Off Output
DD04 – Cooling with Remote Staged On/Off Electric Heat
DD05 – Cooling with Remote Pulse-Width Modulation Electric Heat
DD07 – Cooling with Remote Normally-Open On/Off Hot Water Valve (Normally-Closed Outputs)
See "General Logic" and "DDC Reheat Control" sections for Sequence of Operation.
Damper
Actuator
Wiring
24 VAC 60HZ
NEC CLASS-2
Control Circuit
Load= 12 VA
(Without heat)
8.
TB2-6 TB3-1
TB2-5 TB3-2
TB3-3
5 4 3 2 1
Zone Sensor
w/ Comm. Jack
Remote MTD.
3. 4.
W-HOT
W-HOT
G-OPEN
R-CLOSE
Optional Field-Installed
Zone Sensor
Optional
Transformer
50 VA
TB3-2
TB3-1
TB1-2
Y
BL
TB1-1
J11
J10
J9
Address
Switch
J7
J8
J1
ACT
1
TB4-1
TB1-2
TB1-1
BIP GND 24V
D.D.C.\U.C.M.
CONTROL BOARD
PRESS
J3
1
R
BK
G
Pressure
Transducer
+
VOUT
-
2 1
Zone Sensor
Remote MTD.
4.
Optional Field-Installed
Zone Sensor
+ -
+
- + -
TB2-1
TB2-2
TB2-3
TB2-4
TB2-5
TB2-6
9.
YEL
GRN
TB3-1
ZONE
TB3-2
GND
TB3-3
TB3-5
SET A/CO2
TB3-6
GND
S
7.
TO J10
TO J9
TO J8
2ND STG.
1ST STG.
HOT
HEATER STAGE
CONTACTOR(S)
24 VAC, 12 VA
MAX/COIL
IN
IN
OUT
OUT
D.D.C.\U.C.M.
Control Box
Optional Field-Installed
Electric Heater
Shielded Twisted Pair
Communications Wiring
W (HOT)
TO J8
BK (CLOSE)
TO J9
R (OPEN)
TO J10
PROP.
WATER
VALVE
24 VAC
12 VA MAX
C 10
NOTES:
1.
5. R (HOT)
(TB1-1) 24VAC
O (COMMON)
(TB4-1) BIP
GR (NC CONTACT)
(TB1-1) 24VAC
BK (RETURN)
Y
NOT CONNECTED
OPTIONAL FIELD INSTALLED
OCCUPANCY SENSOR
TB3-5
6.
Optional Field-Installed
Auxillary Temperature Sensor
Factory Wiring
Field Wiring
Optional or Alternate Wiring
2. 1/4" quick connect required for all field connections.
3. Zone sensor terminals 4 and 5 require shielded twisted pair wiring for zone sensor
equipped with communications jack. Zone sensor with LCD requires a sixth wire
with 24 V from a transformer.
4. No additional wiring required for night setback override (On/Cancel).
5. The optional binary input connects between TB4-1 (BIP) and 24 VAC (Hot) from the
transformer. The binary input can be reconfigured as an occupancy input via the
communications interface.
6. As shipped, the AUX input is configured as an Auxiliary Temperature Input. The AUX
input can be reconfigured as a CO2 Sensor Input via the communications interface.
7. S-terminal is not to be used with VariTrane.
8. If unit-installed transformer is not provided, polarity from unit to unit must be
maintained to prevent permanent damage to control board. If one leg of 24 VAC
supply is grounded, then ground leg must be connected to TB1-2.
9. Connect shielding from each communication cable together and insulate.
TB3-6
6.
(TB1-1) 24V
24V
CO2 (TB3-6) GND
SENSOR GND
OUT (TB3-5) A/CO2
OPTIONAL FIELD INSTALLED
CO2 SENSOR
TO J9
TO J8
Optional Field-Installed
Proportional Water Valve
ON–OFF
WATER VALVE
24 VAC
12 VA MAX
Optional Field-Installed
On-Off Water Valve
VAV-PRC008-EN

Controls—
DDC
Control
Drawings
VCWF—Single-Duct Terminal Units
(Normal Operation: Cooling with Hot Water Reheat)
DD02 – Cooling with Normally-Closed On/Off Hot Water Valve (Normally-Open Outputs)
DD03 – Cooling with Proportional Hot Water Valve with Optional Spare On/Off Output
DD07 – Cooling with Normally-Open On/Off Hot Water Valve (Normally-Closed Outputs)
See "General Logic" and "DDC Reheat Control" sections for Sequence of Operation.
ON–OFF
Water Valve
24 VAC
12 VA Max.
Damper
Actuator
Wiring
24 VAC 60HZ
NEC CLASS-2
Control Circuit
Load= 12 VA
(Without heat)
8.
TB2-6
TB3-1
TB2-5 TB3-2
TB3-3
5
4 3 2
1
Zone Sensor
w/ Communication Jack
Remote MTD.
3. 4.
W-HOT
W-HOT
G-OPEN
R-CLOSE
Optional Field-Installed
Zone Sensor
Optional
Transformer
50 VA
TB3-2
TB3-1
2 1
Y
TB1-2
BL
TB1-1
J11
J10
J9
Address
Switch
+ -
TB2-1
TB2-2
J7
+
J8
TB2-3
TB2-4
TB2-5
J1
- + -
9.
ACT
1
TB4-1
D.D.C.\U.C.M.
Control Board
TB2-6
YEL
BIP
GRN
TB3-1
TB1-2
TB1-1
GND 24V
TB3-2
TB3-3
TB3-5
TB3-6
PRESS
J3
ZONE GND SET A/CO2 GND
1
S
R
BK
G
7.
PRESSURE
TRANSDUCER
+
VOUT
-
TO J8
TO J9
TO J10
ZONE SENSOR
REMOTE MTD.
W (HOT)
BK (CLOSE)
4.
Optional Field-Installed
Zone Sensor
R (OPEN)
Optional Field-Installed
Zone Sensor
Prop.
Water
Valve
24 VAC
12 VA Max.
IN
IN
OUT
OUT
D.D.C.\U.C.M.
Control Box
Optional Field-Installed
Proportional Water Valve
NOTES:
1.
2.
Shielded Twisted Pair
Communications Wiring
Factory Wiring
Field Wiring
Optional or Alternate Wiring
1/4" quick connect required for all field connections.
5.
R (HOT)
O (COMMON)
BK (RETURN)
Y
(TB1-1) 24VAC
(TB4-1) BIP
(TB1-1) 24VAC
(TB1-2) GND
NOT CONNECTED
OPTIONAL FIELD INSTALLED
OCCUPANCY SENSOR
TB3-5
TB3-6
6.
OPTIONAL FIELD INSTALLED
AUX. TEMPERATURE SENSOR
6.
(TB1-1) 24V
24V
CO2
SENSOR
OUT (TB3-5) A/CO2
OPTIONAL FIELD INSTALLED
CO2 SENSOR
3.
4.
5.
6.
7.
8.
Zone sensor terminals 4 & 5 require shielded twisted pair wiring for communications jack equipped zone sensor options.
Zone sensor with LCD requires a sixth wire with 24 V from a transformer.
No additional wiring required for night setback override (ON/CANCEL).
The optional binary input connects between TB4-1 (BIP) and 24-VAC (HOT) from transformer. The binary input can be
reconfigured as an occupancy input via the communications interface.
As shipped, the Aux. Input is configured as an Auxillary Temperature Input. The Aux. Input can be reonconfigured as a
CO2 sensor input via the communications interface.
S Terminal not to be used with VariTrane.
If unit-installed transformer is not provided, polarity from unit to unit must be maintained to prevent permanent damage
to control board. If one leg of 24-VAC supply is grounded, the ground leg must be connected to TB1-2.
9. Connect shielding from each communication cable together and insulate.
VAV-PRC008-EN C 11

Controls—
DDC
Control
Drawings
VCEF—Single-Duct Terminal Units
(Normal Operation: Cooling with Electric Reheat)
DD04 – Cooling with Staged On/Off Electric Heat
DD05 – Cooling with Pulse-Width Modulation Electric Heat
See "General Logic" and "DDC Reheat Control" sections for Sequence of Operation.
Heater Stage
Contactor(s)
9.
3RD 2ND 1ST
Optional
Transformer
Damper
Actuator
Wiring
24-VAC 60 HZ
NEC Class–2
Control Circuit
Load = 12 VA
(Without heat)
8.
TB2-6 TB3-1
TB2-5 TB3-2
TB3-3
3RD STG.
R
2ND STG.
V
1ST STG.
O
HOT
BR
Y
TB1-2
BL
TB1-1
W-HOT
W-HOT
G-OPEN
R-CLOSE
5 4 3 2 1
Zone Sensor
w/ Comm. Jack
Remote MTD.
3. 4.
Optional Field-Installed
Zone Sensor
TB3-2
TB3-1
J11
J10
J9
Address
Switch
J7
J8
J1
ACT
D.D.C.\U.C.M.
Control Board
1
TB4-1
TB1-2
TB1-1
BIP GND 24V
PRESS
J3
1
R
BK
G
Pressure
Transducer
+
VOLT
-
2 1
Zone Sensor
Remote MTD.
4.
Optional Field-Installed
Zone Sensor
TB2-1
+ -
TB2-2
TB2-3
+
TB2-4
- + -
TB2-5
TB2-6
YEL
GRN
TB3-1
TB3-2
TB3-3
TB3-5
TB3-6
S
7.
ZONE
GND
SET
A/CO2
GND
10.
IN
IN
OUT
OUT
D.D.C.\U.C.M.
Control Box
Shielded Twisted Pair
Communications Wiring
5.
R (HOT)
O (COMMON)
GR (NC CONTACT)
BK (RETURN)
Y
(TB1-1) 24VAC
(TB4-1) BIP
(TB1-1) 24VAC
(TB1-2) GND
NOT CONNECTED
TB3-5 TB3-6 TB3-6 TB3-5
6.
6.
1.0–10.0
VDC OUT
COM
C 12
NOTES:
1.
Factory Wiring
Field Wiring
Optional or Alternate Wiring
OPTIONAL FIELD INSTALLED
OCCUPANCY SENSOR
FIELD INSTALLED
AUX. TEMPERATURE SENSOR
2. 1/4" quick connect required for all field connections.
3. Zone sensor terminals 4 and 5 require shielded twisted pair wiring for zone sensor equipped with
communications jack. Zone sensor with LCD requires a sixth wire with 24 V from a transformer.
4. No additional wiring required for night setback override (On/Cancel).
5. The optional binary input connects between TB4-1 (BIP) and 24 VAC (Hot) from the transformer.
The Binary input can be reconfigured as an occupancy input via the communications interface.
6. As shipped, the AUX input is configured as an Auxiliary Temperature Input. The AUX input can be
reconfigured as a CO2 Sensor Input via the communications interface.
7. S-terminal is not to be used with VariTrane.
8. If unit-installed transformer is not provided, polarity from unit to unit must be maintained to prevent
permanent damage to control board. If one leg of 24 VAC supply is grounded, the the ground leg
must be connected to TB1-2.
9. Contactors are 24 VAC: 12 VA max./coil (mercury contactors) and 10 VA max./coil (magnetic coils).
10. Connect shielding from each communication cable together and insulate.
OPTIONAL FIELD INSTALLED
CO2 SENSOR
VAV-PRC008-EN

Controls—
DDC
Control
Drawings
VDDF – Dual-Duct Terminal Units
(Normal Operation: Cooling and Heating)
DD01 – Cooling (No Remote Heat) and Heating Control
See "General Logic" and DDC Reheat Control" sections for Sequence of Operation.
COOLING VALVE
DAMPER
ACTUATOR
WIRING
24VAC
FROM TB4 ON
HEATING VALVE UCM
W-HOT
W-HOT
G-OPEN
R-CLOSE
OPTIONAL
TRANSFORMER
50VA
TB2-6
TB3-2 TB3-1
TB2-5
TB3-3
TB3-2
TB3-1
24VAC
Y
BL
Y
BL
5 4 3 2 1
ZONE SENSOR
W/ COMM. JACK
REMOTE MTD.
3. 4.
2 1
ZONE SENSOR
REMOTE MTD.
4.
J11
J10
J9
J7
ADDRESS
SWITCH
J8
J1
ACT
1
TB4-1
BIP
TB1-2
GND
D.D.C.\U.C.M.
CONTROL BOARD
TB1-1
24V
PRESS
J3
1
PRESSURE
TRANSDUCER
R
BK
G
+
VOUT
-
TB1-2
TB1-1
OPTIONAL FIELD
INSTALLED ZONE SENSOR
OPTIONAL FIELD
INSTALLED ZONE SENSOR
+
TB2-1
TB2-2
IN
IN
-
+
TB2-3
TB2-4
OUT
OUT
-
TB2-5
+ -
TB2-6
YEL
GRN
ZONE GND SET A/CO2 GND
SHIELDED TWISTED PAIR
COMMUNICATIONS WIRING
FROM TB3 ON
HEATING VALVE UCM
TB3-1
BL BK R
TB3-2
TB3-3
TB3-5
TB3-6
S
7.
D.D.C.\U.C.M.
CONTROL BOX
5.
R (HOT)
O (COMMON)
GR (NC CONTACT)
BK (RETURN)
Y
(TB1-1) 24VAC
(TB4-1) BIP
(TB1-1) 24VAC
(TB1-2) GND
NOT CONNECTED
OPTIONAL FIELD INSTALLED
OCCUPANCY SENSOR
TB3-5 TB3-6
6.
OPTIONAL FIELD I LED
AUX TEMP S
6.
(TB1-1) 24V
CO2 (TB3-6) GND
SENSOR GND
OUT (TB3-5) A/CO2
OPTIONAL FIELD INSTALLED
CO2 SENSOR
HEATING VALVE
J11
J10
J9
J7
J8
ADDRESS
SWITCH
TB2-1
IN
+
TB2-2
TB2-3
TB2-4
J1
DAMPER
ACTUATOR
WIRING
W-HOT
W-HOT
ACT
BK-OPEN
R-CLOSE
24VAC 50/60 HZ
NEC CLASS-2
CONTROL CIRCUIT
LOAD = 24VA
TB4 1 2 3
Y
BL
D.D.C.\U.C.M.
CONTROL BOARD
- + - + -
IN
OUT
OUT
TB2-5
TB2-6
9.
YEL
TB3-3
TB3-5
FROM TB3 ON
COOLING VALVE UCM
SHIELDED TWISTED PAIR
COMMUNICATIONS WIRING
1
TB4-1
BIP
TB3-1
TB1-2
TB1-1
GND
REMOVED
AT
FACTORY
GRN
ZONE
BL BK R
8.
TB3-2
24V
GND SET
4
TB3-6
PRESS
5
J3
W4
W2
W1 1
A/CO2 GND
S
Y
BL
24VAC
TO TB1 ON
COOLING
VALVE UCM
PRESSURE
TRANSDUCER
R
+
BK
VOUT
G
-
7.
D.D.C.\U.C.M.
CONTROL BOX
NOTES:
1.
2.
3.
FACTORY WIRING
FIELD WIRING
1/4" quick connect required for all field connections.
Zone sensor terminals 4 and 5 require shielded twisted pair wiring for
zone sensor equipped with communications jack. Zone sensor with LCD
requires a sixth wire with 24 V from a transfomer.
4. No additional wiring required for night setback override (On/Cancel).
5. The optional binary input connects between TB4-1 (BIP) and 24 VAC
(Hot) from the transformer. The binary input can be reconfigured as an
occupancy input via the communications interface. Occupancy sensor
is connected to both UCM's.
6. As shipped, the AUX input is configured as an Auxiliary Temperature
Input. The AUX input can be reconfigured as a CO2 Sensor Input via
the communications interface.
7.
S-terminal is not to be used with VariTrane.
8. If unit-installed transformer is not provided, polarity from unit to unit
must be maintained to prevent permanent damage to control board. If
one leg of 24 VAC supply is grounded, then ground leg must be
connected to TB1-2.
9. Connect shielding from each communication cable together and insulate.
VAV-PRC008-EN C 13

Controls—
DDC
Control
Drawings
VDDF – Dual-Duct Terminal Units
(Normal Operation: Cooling and Heating)
DD08 – Cooling (no Remote Heat) and Heating - Constant Volume Control
See "General Logic" and "DDC Reheat Control" sections for Sequence of Operation.
COOLING VALVE
DAMPER
ACTUATOR
WIRING
24VAC
FROM TB4 ON
HEATING VALVE UCM
W-HOT
W-HOT
G-OPEN
R-CLOSE
OPTIONAL
TRANSFORMER
50VA
TB2-6
TB3-2 TB3-1
TB2-5
TB3-3
TB3-2
TB3-1
24VAC
Y
BL
Y
BL
5 4 3 2 1
ZONE SENSOR
W/ COMM. JACK
REMOTE MTD.
3. 4.
2 1
ZONE SENSOR
REMOTE MTD.
4.
J11
J10
J9
J7
ADDRESS
SWITCH
J8
J1
ACT
1
TB4-1
BIP
TB1-2
GND
D.D.C.\U.C.M.
CONTROL BOARD
TB1-1
24V
PRESS
J3
1
PRESSURE
TRANSDUCER
R
BK
G
+
VOUT
-
TB1-2
TB1-1
OPTIONAL FIELD
INSTALLED ZONE SENSOR
OPTIONAL FIELD
INSTALLED ZONE SENSOR
+
TB2-1
TB2-2
IN
IN
-
+
TB2-3
TB2-4
OUT
OUT
-
TB2-5
+ -
TB2-6
SHIELDED TWISTED PAIR
COMMUNICATIONS WIRING
YEL
GRN
ZONE GND SET A/CO2 GND
TB3-1
BL BK R
TB3-2
TB3-3
TB3-5
3. 4.
FIELD INSTALLED
ZONE SENSOR
TB3-6
S
7.
D.D.C.\U.C.M.
CONTROL BOX
5.
R (HOT)
O (COMMON)
GR (NC CONTACT)
BK (RETURN)
Y
(TB1-1) 24VAC
(TB4-1) BIP
(TB1-1) 24VAC
(TB1-2) GND
NOT CONNECTED
OPTIONAL FIELD INSTALLED
OCCUPANCY SENSOR
TB3-5 TB3-6
6.
OPTIONAL FIELD I LED
AUX TEMP SE
6.
(TB1-1) 24V
24V
CO2 (TB3-6) GND
SENSOR GND
OUT (TB3-5) A/CO2
OPTIONAL FIELD INSTALLED
CO2 SENSOR
C 14
HEATING VALVE
J11
J10
J9
J7
J8
ADDRESS
SWITCH
TB2-1
IN
+
TB2-2
IN
TB2-3
TB2-4
DAMPER
ACTUATOR
WIRING
W-HOT
W-HOT
ACT
SHIELDED TWISTED PAIR
COMMUNICATIONS WIRING
J1
BK-OPEN
R-CLOSE
24VAC 50/60 HZ
NEC CLASS-2
CONTROL CIRCUIT
LOAD = 24VA
TB4 1 2 3
Y
BL
D.D.C.\U.C.M.
CONTROL BOARD
- + - + -
OUT
OUT
TB2-5
TB2-6
10.
YEL
1
TB4-1
BIP
GRN
TB3-1
TB1-2
TB1-1
GND
ZONE
8.
TB3-2
24V
GND SET
TB3-3
TB3-5
4
A/CO2
TB3-6
PRESS
5
J3
1
GND
S
Y
BL
24VAC
TO TB1 ON
COOLING
VALVE UCM
9.
PRESSURE
TRANSDUCER
R
+
BK
VOUT
G
-
7.
D.D.C.\U.C.M.
CONTROL BOX
NOTES:
1.
2.
3.
4.
7.
8.
FACTORY WIRING
FIELD WIRING
1/4" quick connect required for all field connections.
Zone sensor terminals 4 and 5 require shielded twisted pair wiring for
zone sensor equipped with communications jack. Zone sensor with LCD
requires a sixth wire with 24 V from a transformer.
No additional wiring required for night setback override (On/Cancel).
5. The optional binary input connects between TB4-1 (BIP) and 24 VAC
(Hot) from the transformer. The binary input can be reconfigured as an
occupancy input via the communications interface. Occupancy sensor
is connected to both UCMs.
6. As shipped, the AUX input is configured as an Auxiliary Temperature
Input. The AUX input can be reconfigured as a CO2 Sensor Input via
the communications interface.
9.
S-terminal is not to be used with VariTrane.
If unit-installed transformer is not provided, polarity from unit to unit
must be maintained to prevent permanent damage to control board. If
one leg of 24 VAC supply is grounded, then ground leg must be
connected to TB1-2.
The flow ring, normally used for sensing heating airflow, is placed at the
discharge of the unit and is used to control constant volume.
10. Connect shielding from each communication cable together and insulate.
VAV-PRC008-EN

Controls—
DDC
Control
Drawings
For Use With VariTrane Fan-Powered Terminals
(Normal Operation: Cooling with Electric Reheat Capability)
DD01 – Cooling Only
DD04 – Cooling With Staged On/Off Electric Heat
DD05 – Cooling With Pulse-Width Modulation Electric Heat
See "General Logic" and "DDC Reheat Control" sections for Sequence of Operation.
DAMPER
ACTUATOR
WIRING
FAN CONTROL
BOX WIRING
TB2-6
TB2-5
TB3-3
TB3-1
TB3-2
WH-HOT
WH-HOT
G-OPEN
R-CLOSE
5 4 3 2 1
ZONE SENSOR
W/ COMM. JACK
REMOTE MTD.
3. 4.
OPTIONAL FIELD
INSTALLED ZONE SENSOR
STANDARD
TRANSFORMER
PROVIDED
50VA
R-FAN
24 VAC
BR
Y
BL
TB3-2
TB3-1
Y
TB1-2
BL
TB1-1
J11
J10
J9
ADDRESS
SWITCH
J7
J8
J1
ACT
TB4-1
D.D.C.\U.C.M.
CONTROL BOARD
1
BIP
TB1-2
TB1-1
GND 24V
PRESS
J3
R
BK
PRESSURE
TRANSDUCER
G -
+
VOUT
2
1
ZONE SENSOR
REMOTE MTD.
4.
OPTIONAL FIELD
INSTALLED ZONE SENSOR
1
+
-
+
-
+
-
TB2-1
TB2-2
TB2-3
TB2-4
TB2-5
TB2-6
YEL
GRN
TB3-1
TB3-2
TB3-3
TB3-5
TB3-6
S
7.
ZONE GND SET A/CO2
GND
IN
IN
OUT
OUT
8.
D.D.C.\U.C.M.
CONTROL BOX
TO J10
TO J9
TO J8
2ND STG.
1ST STG.
HOT
HEATER STAGE
CONTACTOR(S)
24VAC, 12VA
MAX/COIL
OPTIONAL FIELD INSTALLED
ELECTRIC HEATER
SHIELDED
TWISTED PAIR
COMMUNICATIONS
WI ING
5.
R (HOT)
O (COMMON)
GR (NC CONTACT)
BK (RETURN)
Y
OPTIONAL FIELD INSTALLED
OCCUPANCY SENSOR
(TB1-1) 24VAC
(TB4-1) BIP
(TB1-1) 24VAC
(TB1-2) GND
NOT CONNECTED
TB3-5
OPTI
6.
NAL FIELD INST
UX TEMP SENSO
TB3-6
6.
(TB1-1) 24V
24V
CO2
SENSOR
OUT (TB3-5) A/CO2
OPTIONAL FIELD INSTALLED
CO2 SENSOR
TO J8
TO J9
TO J10
TO J8
W (HOT)
BK (CLOSE)
R (OPEN)
PROP.
WATER
VALVE
24VAC
12VA MAX
OPTIONAL FIELD INSTALLED
PROPORTIONAL WATER VALVE
TO J9
ON - OFF
WATER VALVE
24 VAC
12VA MAX
NOTES:
OPTIONAL FIELD INSTALLED
ON-OFF WATER VALVE
1.
2.
3.
FACTORY WIRING
FIELD WIRING
OPTIONAL OR ALTERNATE WIRING
1/4" quick connect required for all field connections
Zone sensor terminals 4 and 5 require shielded twisted pair wiring for communications jack equipped zone sensor
option. Zone sensor with LCD requires a sixth wire with 24 V from a transformer.
4.
No additional wiring required for night setback override (on/cancel).
5.
The optional binary input connects between TB4-1 (BIP and 24 VAC (hot) from transformer. the binary input can be
reconfigured as an occupancy input via the communications interface.
6.
7.
As shipped, the aux input is configured as an aux temp input. The aux input can be reconfigured
as a CO2 sensor input via the communications interface.
S terminal not to be used with VariTrane.
8. Connect shielding from each communication cable together and insulate.
VAV-PRC008-EN C 15

Controls—
DDC
Control
Drawings
For Use With VariTrane Fan-Powered Terminals
(Normal Operation: Cooling with Hot Water Reheat)
DD02 – Cooling with Normally-Closed On/Off Hot Water Valve (Normally-Open Outputs)
DD03 – Cooling with Proportional Hot Water Valve
DD07 – Cooling with Normally-Open On/Off Hot Water Valve (Normally-Closed Outputs)
See "General Logic" and "DDC Reheat Control" sections for Sequence of Operation.
ON – OFF
WATER VALVE
24 VAC
12VA MAX
DAMPER
ACTUATOR
WIRING
FAN CONTROL
BOX WIRING
TB3–6
TB3–5
TB3–3
TB3–1
TB3–2
STANDARD
TRANSFORMER
PROVIDED
50VA
W–HOT
W–HOT
G–OPEN
R–CLOSE
5 4 3
ZONE SENSOR
W/ COMM. JACK
REMOTE MTD.
3.
4.
OPTIONAL FIELD
INSTALLED ZONE SENSOR
2
1
R–FAN
TB3–2
TB3–1
BR
Y
Y
BL
TB1-2
TB1-1
J11
J10
J9
J7
ADDRESS
SWITCH
J8
J1
ACT
BIP
D.D.C. \ U.C.M.
CONTROL BOARD
1
TB4–1
TB1–2
GND
TB1–1
24V
J11
PRESS
24 VAC
J3
R
BK
G
PRESSURE
TRANSDUCER
+
VOUT
_
2
ZONE SENSOR
REMOTE MTD.
4.
OPTIONAL FIELD
INSTALLED ZONE SENSOR
1
1
TB2–1
IN
+
TB2–2
IN
– + – +
TB2–3
OUT
TB2–4
OUT
TB2–5
TB2–6
8.
–
YEL
GRN
TB3–1
TB3–2
TB3–3
J11
J11
TB3–5
J11
TB3–6
ZONE GND SET A/CO2 GND
S
7.
DDC\UCM
CONTROL BOX
TO J8
TO J9
TO J10
W (HOT)
BK (CLOSE)
R (OPEN)
PROP.
WATER
VALVE
24VAC
12VA MAX
OPTIONAL FIELD INSTALLED
PROPORTIONAL WATER VALVE
SHIELDED TWISTED PAIR
COMMUNICATIONS WIRING
5.
R (HOT)
O (COMMON)
GR (NC CONTACT)
BK (RETURN)
Y
(TB1-1) 24VAC
(TB4-1) BIP
(TB1-1) 24VAC
(TB1-2) GND
NOT CONNECTED
TB3–5
TB3–6
6.
24V
CO2
SENSOR
(TB1-1) 24V
(TB3-5) A/CO2
NOTES:
OPTIONAL FIELD INSTALLED
OCCUPANCY SENSOR
OPTIONAL FIELD INSTALLED
AUX TEMP SENSOR
OPTIONAL FIELD INSTALLED
CO2 SENSOR
1.
2.
3.
4.
5.
6.
7.
Factory Wiring
Field Wiring
Optional or Alternate Wiring
1.4" quick connect required for all field connections.
Zone sensor terminals 4 & 5 require shielded twisted pair wiring for communications jack equipped zone sensor options.
Zone sensor with LCD requires a sixth wire with 24 V from a transformer.
No additional wiring required for night setback override (ON/CANCEL).
The optional binary input connects between TB–1 (BIP) AND 24 VAC (HOT) from transformer. The binary input can be
reconfigured as an occupancy input via the communications interface.
As shipped, the Aux Input is configured as an Auxillary Temporary Input. The Aux. Input can be reconfigured as a
CO2 sensor input via the communications interface.
S Terminal not to be used with VariTrane.
C 16
8.
Connect shielding from each communication cable together and insulate.
VAV-PRC008-EN

Controls—
DDC
Control
Drawings
For Use With ECM VariTrane Fan-Powered Terminals
(Normal Operation: Cooling with Reheat Capability)
DD01 – Cooling Only
DD02 – Cooling with Normally-Closed On/Off Hot Water Vavle (Normally-Open Outputs)
DD03 – Cooling with Proportional Hot Water Valve
DD04 – Cooling with Staged On/Off Electric Heat
DD05 – Cooling with Pulse-Width Modulation Electric Heat
DD07 – Cooling with Normally-Closed On/Off Hot Water Valve (Normally-Closed Outputs)
DAMPER
ACTUATOR
WIRING
FAN CONTROL
BOX WIRING
TO
ECM
MOTOR
W-HOT
G-OPEN
Y
BL
BK
Y
O
TB2-6
TB3-1
TB2-5 TB3-2
TB3-3
J11
J10
ADDRESS
SWITCH
TB2-1
+
IN
IN TB2-2
J9
R
J7
J8
- + -
TB2-3
OUT
TB2-4
OUT
J1
D.D.C.\U.C.M.
CONTROL BOARD
+
TB2-5
TB2-6
SHIELDED
TWISTED PAIR
COMMUNICATIONS
WIRING
9.
W-HOT
-
R-CLOSE
ACT
YEL
1
TB4-1
BIP
GRN
TB3-1
Y
TB1-2
TB1-1
GND
TB3-2
24V
BL
TB3-3
TB3-5
TB3-6
COOL
ZONE GND SET A/CO2 GND
1
Y
J3
BL
S
BL
R
2
1
24V
4
3
MOTOR
RELAY
R
+
BK
VOUT
G -
7.
D.D.C.\U.C.M.
CONTROL BOX
NEUT.
RED
ECM
BOARD
PRESSURE
TRANSDUCER
RED
24V
8.
W
BK
G
R
TO J10
TO J9
TO J8
5 4 3 2 1
ZONE SENSOR
W/ COMM. JACK
REMOTE MTD.
3.
4.
OPTIONAL FIELD
INSTALLED ZONE SENSOR
TB3-2
2
TB3-1
1
ZONE SENSOR
REMOTE MTD.
4.
OPTIONAL FIELD
INSTALLED ZONE SENSOR
2ND STG.
1ST STG.
HOT
HEATER STAGE
CONTACTOR(S)
24VAC, 12VA
MAX/COIL
OPTIONAL FIELD INSTALLED
ELECTRIC HEATER
STANDARD
TRANSFORMER
PROVIDED
50VA
5.
R (HOT)
O (COMMON)
BK (RETURN)
Y
(TB1-1) 24VAC
(TB4-1) BIP
(TB1-1) 24VAC
(TB1-2) GND
NOT CONNECTED
TB3-5
6.
TB3-6
6.
CO2
SENSOR
OUT
(TB1-1) 24V
(TB3-6) GND
(TB3-5) A/CO2
TO J8
TO J9
TO J10
W (HOT)
BK (CLOSE)
R (OPEN)
PROP.
WATER
VALVE
24VAC
12VA MAX
OPTIONAL FIELD INSTALLED
PROPORTIONAL WATER VALVE
Y
TB1-2
BL
TB1-1
OPTIONAL FIELD INSTALLED
OCCUPANCY SENSOR
OPTI
OPTIONAL FIELD INSTALLED
CO2 SENSOR
TO J9
TO J8
ON - OFF
WATER VALVE
24 VAC
12VA MAX
NOTES:
1.
FACTORY WIRING
FIELD WIRING
OPTIONAL OR ALTERNATE WIRING
OPTIONAL FIELD INSTALLED
ON-OFF WATER VALVE
2. 1/4" quick connect required for all field connections
3. Zone sensor terminals 4 and 5 require shielded twisted pair wiring for communications jack equipped zone sensor
option. Zone sensor with LCD requires a sixth wire with 24 V from a transformer.
4.
No additional wiring required for night setback override (on/cancel).
5.
6.
The optional binary input connects between TB4-1 (BIP and 24 VAC (hot) from transformer. the binary input can be
reconfigured as an occupancy input via the communications interface.
As shipped, the aux input is configured as an aux temp input. The aux input can be reconfigured
as a CO2 sensor input via the communications interface.
7. S terminal not to be used with VariTrane.
8. Fan cfm can be adjusted from its min. cfm to its max. cfm via the ECM control board dial
switches. The switches set the percentage flow.
9. Connect shielding from each communication cable together and insulate.
VAV-PRC008-EN C 17

Controls—
DDC
Accessories
Direct Digital Controller—
Unit Control Module
The Trane direct digital controller Unit
Control Module (DDC-UCM) is a
microprocessor-based terminal unit
with non-volatile memory which
provides accurate airflow and room
temperature control of Trane VAV air
terminal units. The UCM can operate in
a pressure-independent or a pressuredependent
mode and uses a
proportional plus integral control
algorithm. The controller monitors zone
temperature setpoints, zone
temperature and its rate of change and
valve airflow (via flow ring differential
pressure). The controller also accepts
an auxiliary duct temperature sensor
input or a suupply air temperature
value from Tracer Summit. Staged
electric heat, pulse width modulated
electric heat, proportional hot water
heat or on/off hot water heat control
are provided when required. The
control board operates using
24-VAC power. The Trane DDC-UCM is
a member of the Trane Integrated
Comfort systems (ICS) family of
products. When used with a Trane
Tracer Summit building management
controller or other Trane controllers,
zone grouping and unit diagnostic
information can be obtained. Also part
of ICS is the factory-commissioning of
parameters specified by the engineer
(see "Factory-Installed vs. Factory-
Commissioned" in the Features and
Benefits section for more details).
SPECIFICATIONS
Supply voltage:
24 VAC, 50/60 Hz
Maximum VA load:
No heat or fan:
12 VA (Board, Transducer, Zone Sensor,
and Actuator)
Note: If using field-installed heat,
24 VAC transformer should be sized
for additional load.
Output ratings:
Actuator Output: 24 VAC at 12 VA
1st Stage Reheat: 24 VAC at 12 VA
2nd Stage Reheat: 24 VAC at 12 VA
3rd Stage Reheat: 24 VAC at 12 VA
Binary input:
24 VAC
Auxiliary input:
Can be configured for an optional 2–10
VDC CO 2
sensor, or auxiliary
temperature sensor.
Operating environment:
32 to 140°F, (0 to 60°C)
5% to 95% RH, Non-condensing
Storage environment:
-40 to 180°F (-40 to 82.2°C),
5% to 95%RH, Non-Condensing
Physical dimensions:
Width:
5.5" (139.7 mm)
Length:
2.8" (69.85 mm)
Height:
1.8" (44.45 mm)
Connections:
1/4" (6.35 mm) Stab Connections
Communications:
RS-485; Stranded wire, twisted pair,
shielded, copper conductor only,
18–20 awg
Fan control:
Series fan:
Parallel fan:
On unless unoccupied
and min. flow has been
released.
On when zone
temperature is less than
heating setpoint plus fan
offset. Off when zone
temperature is more than
heating setpoint plus fan
offset plus 0.5°F (0.28°C).
Heat staging:
Staged electric or hot water
proportional or pulse-width
modulation
C 18
VAV-PRC008-EN

Controls—
DDC
Accessories
Wireless Receiver/Wireless Zone Sensor
DDC Zone Sensor
The wireless zone sensor system
eliminates the wiring problems
associated with VAV temperature
sensors. It provides the flexibility to
move zone sensors after the occupants
have revised the space floor plan
layout. The zone sensor houses the
space temperature sensor, local
setpoint adjustment thumbwheel,
OCCUPIED/UNOCCUPIED button,
battery life, signal strength indicators,
and spread spectrum transmitter. The
spread spectrum receiver/translator
can be field or factory installed and
functions as a communication
translator between spread spectrum
radio communications and the VAV
communications link. For further
information, refer to the wireless zone
sensor product catalog at http://
www.trane.com/commercial/
equipment/PDF/42/
BASPRC023_032306.pdf.
SPECIFICATIONS
Power requirements:
Receiver:
24 V nominal AC/DC ± 10% < 1VA
Zone Sensor:
(2) AA lithium batteries
Sensor Operating environments:
32 to 122°F, (0 to 50°C)
5 to 95%RH, Non-condensing
Receiver Operating environments:
-40 to 158°F, (-40 to 70°C)
5 to 95%RH, Non-condensing
Storage environment—sensor/
receiver:
-40 to 185°F, (-40 to 85°C)
5 to 95%RH, Non-condensing
Mounting:
Receiver:
Suitable for mounting above or below
ceiling grid. Requires 24 V power.
Factory installed receiver comes
mounted to the VAV unit with power
provided by associated unit controller
transformer. Field installed option
provided with associated wireharness
for similar power and communication
connection.
Sensor:
Mounts to a 2x4 handi-box or directly
to the wall by attaching the backplate
and then snapping the sensor body
into place.
Dimensions:
Receiver/Translator
Enclosure: Plastic
Height: 4.75" (120.6 mm)
Width: 2.90" (73.5 mm)
Depth: 1.08" (27.5 mm)
Sensor/Transmitter
Enclosure: Plastic
Height: 4.78" (121.4 mm)
Width: 2.90" (73.5 mm)
Depth: 1.08" (27.5 mm)
The DDC zone sensor is used in
conjunction with the Trane direct digital
controller to sense the space
temperature and to allow for user
adjustment of the zone setpoint.
Models with external zone setpoint
adjustments, plug-in communications
jack and occupied mode override
pushbuttons are available.
SPECIFICATIONS
Thermistor resistance rating:
10,000 Ohms at 77°F (25°C)
Setpoint resistance rating:
Setpoint potentiometer is calibrated to
produce 500 Ohms at a setting of 70°F
(21.11°C)
Electrical connections:
Terminal Block – Pressure Connections
Communications Jack – WE-616
Physical dimensions:
Width:
2.75" (69.85 mm)
Length:
4.5" (114.3 mm)
Height:
1.0" (25.4 mm)
VAV-PRC008-EN C 19

Controls—
DDC
Accessories
CO 2
Wall Sensor
Duct CO 2
Sensor
DDC Zone Sensor with LCD
The wall- and duct-mounted carbon dioxide (CO 2
) sensors are designed for use with
Trane DDC/UCM control systems. Installation is made simple by attachment directly
to the DDC/ UCM controller. This allows the existing communication link to be used
to send CO 2
data to the higher-level Trane control system.
Wall-mounted sensors can monitor individual zones, and the duct-mounted sensor
is ideal for monitoring return air of a given unit. Long-term stability and reliability
are assured with advanced silicon based Non-Dispersive Infrared
(NDIR) technology.
When connected to a building automation system with the appropriate ventilation
equipment, the Trane CO 2
sensors measure and record carbon dioxide in parts-permillion
(ppm) in occupied building spaces. These carbon dioxide measurements are
typically used to identify under-ventilated building zones and to override outdoor
airflow beyond design ventilation rates if the CO 2
exceeds acceptable levels.
SPECIFICATIONS
Measuring Range
0–2000 parts per million (ppm)
Accuracy at 77°F (25°C)
< ± (40 ppm CO 2
+ 3% of reading)
(Wall only)
< ± (30 ppm CO 2
+ 3% of reading)
Recommended calibration interval
5 years
Response time
1 minute (0–63%)
Operating Temperature
59 to 95°F (15 to 35°C) (Wall only)
23 to 113°F (-5 to 45°C)
Storage Temperature
-4 to 158°F (-20 to 70°C)
Humidity Range
0–85% relative humidity (RH)
Output Signal (jumper selectable)
4-20 mA, 0–20 mA,
0–10 VDC
Resolution of analog outputs
10 ppm CO 2
Power Supply
Nominal 24 VAC
Power Consumption

Controls—
DDC
Accessories
Zone Occupancy Sensor
Auxiliary Temperature Sensor
Control Relay
The zone occupancy sensor is ideal for
spaces with intermittent occupancy. It
is connected to the Trane DDC UCM
and allows the zone to shift to
unoccupied setpoints for energy
savings when movement is not
detected in the space.
The zone occupancy sensor has a
multi-cell, multi-tier lens with a
maximum field of view of 360°. The
maximum coverage area of the sensor
is 1200 square feet with a maximum
radius of 22 feet from the sensor when
mounted at 8 feet above the floor.
Sensor ships with 30-minute time
delay pre-set from the factory. Time
delay and sensitivity can be fieldadjusted.
SPECIFICATIONS
Power Supply
24 VAC or 24 VDC, ± 10%
Maximum VA Load
0.88 VA @ 24 VAC,
0.72 VA @ 24 VDC
Isolated Relay Rating
1 A @ 24 VAC or 24 VDC
Operating Temperature
32 to 131°F (0 to 55°C)
The auxiliary temperature sensor is used
in conjunction with the Trane DDC
controller to sense duct temperature.
When the DDC controller is used with
a Building Automation System, the
sensor temperature is reported as status
only. When the DDC controller is used in
a stand-alone configuration, the sensor
determines the control action of the UCM
in a heat/cool changeover system.
SPECIFICATIONS
Sensing Element:
Thermistor 10,000 Ohms @ 77°F (25°C)
Operating environment:
-4 to 221°F (-20 to 105°C), 5%-95%RH
Non-Condensing
Wiring Connection:
8 ft 18 awg
Sleeving for wire leads is acyrlic #5 awg
grade C rated @ 155 C
Probe Dimensions:
3.4" long x 5/16" diameter
(86 mm x 7.9 mm diameter)
Mounting:
In any position on duct.
Mount the sensor to the duct using
#10 x ¾" (19.05 mm) sheet metal screws.
The control relay is an output device
used to provide on/off control of
electrical loads. The SPST relay also
will isolate the electrical load from the
direct digital controller.
SPECIFICATIONS
Coil rating:
24 VAC, 50/60 Hz, pull in at 85%,
4 VA inrush, 3 VA sealed, Class B
insulation
Contact rating:
120 VAC, 12 FLA , 60 LRA, 18A
Resistive Pilot Duty – 125 VA/3A
277 VAC, 7 FLA, 42 LRA, 18A Resistive
Pilot Duty – 277 VA/3A
347 VAC, 25 FLA, 50 LRA, 30A Resistive
Storage Temperature
-22 to 176°F (-30 to 80°C)
Humidity Range
0 to 95% non-condensing
Effective Coverage Area
1200 sq ft
Effective Coverage Radius
22 feet
Housing Material
ABS Plastic
Dimensions
3.3" dia. x 2.2" deep (85 mm x 56 mm).
Protrudes 0.36" (9 mm) from ceiling
when installed.
VAV-PRC008-EN C 21

Controls—
DDC
Accessories
Two-Position Water Valve
Proportional Water Valve
Two-position hot water valves are used
with Trane DDC/UCM controls and
analog electronic controls. Valve
actuation is by a hysteresis
synchronous motor.
All valves are field-installed and
convertible from three-way to two-way
by means of an included cap.
SPECIFICATIONS
Valve design
Body:
Brass
Cover:
Aluminum
Case:
Stainless Steel
Stem:
Brass, Hard
Chrome Plate
“O” Ring Seals: Viton
Operating Paddle: Buna N
Valve body ratings:
UL 873 Listed File E27743
Plenum Rated CSA C22.2 No. 139
Certified, File LR85083, Class 3221 01
Temperature limits:
200°F (93.33°C) Fluid
104°F (40°C) Ambient
Maximum Operating Pressure:
300 psi (2069 kPa)
Electrical rating:
Motor Voltage – 24 VAC, 50/60 Hz
Power Consumption – 7.0 VA of 24 VAC
Valve offerings:
All valves are spring returned.
1.17 Cv – ½" (12.7 mm) O.D. NPT
3.0 Cv – ¾" (19.1 mm) O.D. NPT
6.4 Cv – 1" (25.4 mm) O.D. NPT
Cv offered (Close-off Pressure):
1.17 30 psi (207 kPa)
3.0 14.5 psi (100 kPa)
6.4 9 psi (62 kPa)
The proportional water valve is used to
provide accurate control of a hot water
heating coil to help maintain a zone
temperature setpoint. The valve plug
is an equal percentage design and
comes available in four different flow
capacities for proper controllability. The
valves are field-adjustable for use as a
two- or three-way configuration. The
valves ship in a two-way configuration
with a cap over the bottom port.
Conversion to three-way operation is
accomplished by removing the plug
from the "B" port. The valve actuator
contains a three-wire synchronous
motor. The direct digital controller uses
a time-based signal to drive the motor
to its proper position. When power is
removed from the valve, it remains in
its last controlled position.
SPECIFICATIONS
Valve design:
Equal percentage plug designed for
water or water with up to 50% glycol
or ethylene
Valve body ratings:
ANSI B16.15, Class 250 pressure/
temperature
ANSI B16.104, Class IV control valve shut
off leakage standard
ISA S75.11 flow characteristic standard
Temperature limits:
34–203°F (1–95°C) Fluid
32–150°F (0–66°C) Ambient
Maximum operating pressure:
345 psi at 281°F (2379 kPa at 138°C)
Maximum actuator close-off pressure:
55 psi (379 kPa)
Electrical rating:
Motor Voltage – 24 VAC, 50/60 Hz
Power Consumption – 6.0 VA at 24 VAC
Valve offerings:
All valves are proportional Tri-state
Control with ½" (12.7 mm) O.D. NPT
connections with the exception of
7.3 Cv, which is ¾" (19.1 mm).
Cv offered:
0.7
2.2
3.8
6.6
C 22
VAV-PRC008-EN

Controls—
DDC
Accessories
Differential Pressure
Transducer
Transformers
The differential pressure transducer is
used in conjunction with the Trane
direct digital controller and analog
electronic controller. The pressure
transducer measures the difference
between the high-pressure and lowpressure
ports of the Trane flow ring.
The transducer is self-adjusting to
changes in environmental temperature
and humidity.
SPECIFICATIONS
Input pressure range:
0.0 to 5.0 in. wg
(Maximum input pressure 5 psig )
Operating environment:
32 to 140° F, (0 to 60°C)
5% to 95% RH, Non-Condensing
Storage environment:
-40 to 180° F, (-40 to 82.2°C)
5% to 95%RH, Non-condensing
Electrical connections:
V in
= 5.0 VDC nominal
(4.75 to 5.25 VDC acceptable)
Current Draw = 5 mA maximum
Null Voltage = 0.250 VDC ± 0.06 VDC
Span = 3.75 VDC ± 0.08 VDC
Note:
Null and Span are ratiometric with V in
Physical dimensions:
Width:
2.5" (63.5 mm)
Length:
3.0" (76.2 mm)
Height:
1.5" (38.1 mm)
Pressure connections:
1
/ 8
" (3.175 mm) barbed tubing
connections
The transformer converts primary
power supply voltages to the voltage
required by the direct digital controller
and analog. The transformer also
serves to isolate the controller from
other controllers which may be
connected to the same power source.
SPECIFICATIONS
Primary voltage:
120 VAC
208 VAC
240 VAC
277 VAC
347 VAC
480 VAC
575 VAC
Secondary voltage:
24 VAC
Power rating:
50 VA
Physical dimensions:
For all voltages:
The transformers will be no larger
than the following dimensions:
Width: 2.63" (66.7 mm)
Length: 2.50" (63.5 mm)
Height: 2.30" (58.4 mm)
VAV-PRC008-EN C 23

Controls—
DDC
Accessories
Trane Actuator – 90 Second Drive Time
Trane Spring Return Actuator
This actuator is used with DDC controls
and retrofit kits. It is available with a 3-
wire floating-point control device. It is a
direct-coupled over the shaft
(minimum shaft length of 2.1"),
enabling it to be mounted directly to
the damper shaft without the need for
connecting linkage. The actuator has an
external manual gear release to allow
manual positioning of the damper
when the actuator is not powered. The
actuator
is Underwriters Laboratories Standard
873 and Canadian Standards
Association Class 3221 02 certified as
meeting correct safety requirements
and recognized industry standards.
SPECIFICATIONS
Actuator design:
3-wire, 24-AC floating-point control.
Non-spring return.
Actuator housing:
Housing type-NEMA 1
Rotation range:
90° clockwise or counterclockwise
C 24
Electrical rating:
Power Supply –24 VAC (20 to 30 VAC)
at 50/60 Hz
Power Consumption – 1.8 VA
maximum, Class 2
Electrical connection:
No. 6-32 screw terminals (For DD00
and FM01 control options and retrofit
kits).
6-pin female connector harness for
Trane UCM (for Trane DDC controls
except retrofit kits)
Manual override:
External clutch release lever
Shaft requirement:
½" round
2.1" length
Humidity:
5% to 95% RH, Non-Condensing
Temperature rating:
Ambient operating: 32 to 125°F
(0 to 52°C)
Shipping and storage: -20 to 130°F
(-29 to 66°C)
Torque:
Running: 35 in.-lb (4 N-m)
Breakaway: 35 in.-lb (4 N-m) minimum
Stall: 60 in.-lb (4.5 N-m) minimum
This actuator is used with DDC controls
and is a floating-point control device. It is
direct-coupled over the shaft (minimum
shaft length of 2.1"), enabling it to be
mounted directly to the damper shaft
without the need for connecting linkage.
The actuator is Underwriters
Laboratories Standard 60730 and
Canadian Standards Association C22.2
No. 24-93 certified as meeting correct
safety requirements and recognized
industry standards.
SPECIFICATIONS
Actuator design:
24-VAC, floating-point control. Spring
return
Actuator housing:
Housing Type-NEMA IP54
Rotation range:
Adjustable from 0° to 90° at 5° intervals,
clockwise or counterclockwise
Electrical rating:
Power Supply – 24 VAC (19.2 to 28.8 VAC)
at 50/60 Hz
Power Consumption – 4VA holding, 5VA
running maximum, Class 2
Electrical connection:
6-pin female connector for Trane UCM
(for Trane DDC controls)
Manual override:
Manual override key provided
Shaft requirement:
¼" to ¾" round
2.1" length
Humidity:
95% RH, Non-Condensing
Temperature rating:
Ambient operating: 32 to 130°F
(0 to 54°C)
Shipping and storage: -40 to 158°F
(-40 to 70°C)
Torque:
62 in.-lbs (7N-m)
VAV-PRC008-EN

Controls—
DDC
Accessories
VariTrane DDC Retrofit Kit
Retrofit Kit Actuator
The retrofit kit provides the system
advantages of VariTrane DDC controls
to building owners for existing
systems. The kit can be applied when
converting from pneumatic or analog
controlled systems to a DDC controlled
system. The kit may be used on
existing single-duct units with hot
water and electric reheat (three stages),
dual-duct units, and all fan-powered
units (both series and parallel) with hot
water and electric reheat (two stages).
A VariTrane DDC-UCM, an electronic
differential pressure transducer, and a
six-pin connector with wiring for an
actuator, make up the assembly of the
retrofit kit. All are housed inside a
metal enclosure. For maximum
flexibility, the kit is available with one
of two actuators or without an actuator.
If a kit is ordered without an actuator,
ensure the actuator used has 24VAC
three-wire floating control. Other
accessories are available with the
retrofit kit which include zone sensors,
flow bars (used with units without a
flow sensor), power transformers,
control relays, and E/P solenoid valves.
This actuator is available with the DDC
Retrofit Kit and is a 3-terminal, floatingpoint
control device. It is direct-coupled
over the damper shaft so there is no
need for connecting linkage. The
actuator has an external manual gear
release to allow manual positioning of
the damper when the actuator is not
powered. A three-foot plenum-rated
cable with bare ends will be sent
separately. The actuator is listed under
Underwriters Laboratories Standard
873, CSA 22.2 No. 24 certified, and CE
manufactured per Quality Standard
SO9001.
SPECIFICATIONS
Actuator design:
on-off/floating-point
Actuator housing:
Housing Type-NEMA type 1
Housing Material Rating- UL 94-5V
Direction of rotation:
Reverse wires terminals 2 and 3
Angle of rotation:
Max 95º, adjustable with mechanical
stops
Electrical rating:
Power Supply – 24 VAC ± 20% 50/60 Hz
24 VDC ± 10%
Power Consumption – 2 W
Transformer Sizing – 3 VA (Class 2
power source)
Manual override:
External push button
Humidity:
5% to 95% RH, Non-Condensing
Ambient temperature:
-22 to 122°F (-30C to 50°C)
Storage environment:
-40 to 176°F (-40 to 80°C)
Torque:
Min 35 in.-lb (4Nm), Independent
of load
Running time:
95 sec. for 0 to 35 in-lb
Noise rating:
Less than 35 dB (A)
Weight:
1.2 lbs (0.55 kg)
VAV-PRC008-EN C 25

Controls—
LonMark DDC
VAV Controller
Introduction
This LonMark certified controller
uses the Space Comfort Controller
(SCC) profile to exchange information
over a LonTalk network. Networks
with LonMark certified controllers
provide the latest open protocol
technology. Being LonMark certified
guarantees that owners and end-users
have the capability of adding Trane
products to other “open” systems and
relieves owners of the pressure and
expense of being locked into a single
DDC supplier. The Trane VV550 VAV
controller with VariTrane VAV units can
be applied to more than just Trane
systems. When a customer buys a
Trane VAV unit with Trane DDC
controller, they take advantage of:
• Factory-commissioned quality
• Knowing they have selected the most
reliable VAV controllers in the industry
• Trane as a single source to solve any
VAV equipment, or system-related
issues
• The most educated and thorough
factory service technicians in the
controls industry
• Over 150 local parts centers
throughout North America that can
provide what you need, when you
need it.
Don’t let your existing controls supplier
lock you out of the most recognized
name in VAV system control in the
industry. Specify Trane open-protocol
systems.
What are the new features of this
controller? Read on to find out more.
Don’t let your existing controls
supplier lock you out of the most
recognized name in VAV system
control in the industry. Specify
Trane open-protocol systems.
C 26
VAV-PRC008-EN

Controls—
LonMark DDC
VAV Controller
Options
VV550—Trane DDC LonMark Controller
Single-Duct Terminal Unit (VCCF, VCWF, and VCEF)
Unit Heat Control Description Page #
DD11 Space Temp Control without Reheat C 35
DD12 Space Temp Control with Remote Normally-Closed On/Off Hot Water Valve (Normally-Open Outputs) C 35
Cooling Only DD13 Space Temp Control with Remote Proportional Hot Water Valve with Optional Spare On/Off Output C 35
(VCCF model) DD14 Space Temp Control with Remote Staged Electric Heat C 35
DD15 Space Temp Control with Remote Pulse-Width Modulation Electric Heat C 35
DD17 Space Temp Control with Remote Normally-Open On/Off Hot Water Valve (Normally-Closed Output) C 35
Hot Water DD12 Space Temp Control with Normally-Closed On/Off Hot Water Valve (Normally-Open Outputs) C 35
(VCWF model) DD13 Space Temp Control with Proportional Hot Water Valve with Optional Spare On/Off Output C 35
DD17 Space Temp Control with Normally-Open On/Off Hot Water Valve (Normally-Closed Output) C 35
Electric DD14 Space Temp Control with Staged Electric Heat C 35
(VCEF model) DD15 Space Temp Control with Pulse-Width Modulation Electric Heat C 35
Dual-Duct Terminal Unit (VDDF)
Unit Heat Control Description Page #
(VDDF model) DD11 Space Temp Control (No Remote Heat) and Heating Control C 36
DD18 Space Temp Control (No Remote Heat) and Heating—Constant-Volume Control C 36
Fan-Powered Terminal Units with PSC Motor (VPCF, VPWF, VPEF, VSCF, VSWF, and VSEF)
Low-Height Fan-Powered Terminal Units with PSC Motor (LPCF, LPWF, LPEF, LSCF, LSWF, and LSEF)
Unit Heat Control Description Page #
DD11 Space Temp Control without Reheat C 37
Cooling Only DD12 Space Temp Control with Remote Normally-Closed On/Off Hot Water Valve with Normally-Open Outputs C 37
(VPCF, VSCF, DD13 Space Temp Control with Remote Proportional Hot Water Valve C 37
LPCF, LSCF DD14 Space Temp Control with Remote Staged On/Off Electric Heat C 37
models) DD15 Space Temp Control with Remote Pulse-Width Modulation Electric Heat C 37
DD17 Space Temp Control with Remote Normally-Open On/Off Hot Water Valve with Normally-Closed Outputs C 37
Hot Water DD12 Space Temp Control with Normally-Closed On/Off Hot Water Valve with Normally-Open Outputs C 37
(VPWF, VSWF DD13 Space Temp Control with Proportional Hot Water Valve C 37
LPWF, LSWF) DD17 Space Temp Control with Normally-Open On/Off Hot Water Valve with Normally-Closed Outputs C 37
Electric DD14 Space Temp Control with Staged On/Off Electric Heat C 37
(VPEF, VSEF DD15 Space Temp Control with Pulse-Width Modulation Electric Heat C 37
LPEF, LSEF)
Fan-Powered Terminal Units with ECM (VPCF, VPWF, VPEF, VSCF, VSWF, and VSEF)
Unit Heat Control Description Page #
DD11 Space Temp Control without Reheat C 38
DD12 Space Temp Control with Remote Normally-Closed On/Off Hot Water Valve with Normally-Open Outputs C 38
Cooling Only DD13 Space Temp Control with Remote Proportional Hot Water Valve C 38
(VPCF, VSCF DD14 Space Temp Control with Remote Staged On/Off Electric Heat C 38
models) DD15 Space Temp Control with Remote Pulse-Width Modulation Electric Heat C 38
DD17 Space Temp Control with Remote Normally-Open On/Off Hot Water Valve with Normally-Closed Outputs C 38
Hot Water DD12 Space Temp Control with Normally-Closed On/Off Hot Water Valve with Normally-Open Outputs C 38
(VPWF, VSWF DD13 Space Temp Control with Proportional Hot Water Valve C 38
models) DD17 Space Temp Control with Normally-Open On/Off Hot Water Valve with Normally-Closed Outputs C 38
Electric DD14 Space Temp Control with Staged On/Off Electric Heat C 38
(VPEF, VSEF DD15 Space Temp Control with Pulse-Width Modulation Electric Heat C 38
models) C 38
VAV-PRC008-EN C 27

Controls—
LonMark DDC
VAV Controller
Features
&
Benefits
General Features and
Benefits
Assured Accuracy
• Proportional-plus-integral control loop
algorithm for determining required
airflow needed to control room
temperature. Airflow is limited by
active minimum and maximum
airflow setpoints.
• Pressure-independent (PI) operation
that automatically adjusts valve
position to maintain required airflow.
In certain low-flow situations or in
cases where the flow measurement
has failed, the DDC controller will
operate in a pressure-dependent (PD)
mode of operation.
• When combined with the patented
Trane Flow ring and pressure
transducer, flow is repeatable to +/- 5%
accuracy across the Pressure
Independent (PI) flow range. (See
Valve/Controller Airflow Guidelines
section).
• Improved 2-Point Air Balancing is
available – Assures optimized flowsensing
accuracy across the operating
range. This provides a more accurate
airflow balancing method when
compared to typical single-point flow
correction air balancing.
• Analog input resolution of +/- 1/8°F
within the comfort range maximizes
zone temperature control yielding
excellent comfort control.
Reliable Operation
• Built for life – Trane products are
designed to stand the test of time, with
a proven design life that exceeds 20
years.
• Fully factory tested – fully screened
and configured at the factory. All
features are tested including fan and
reheat stage energization, air valve
modulation, and controller inputs and
outputs.
Safe Operation
• All components, including the
controller, pressure transducer,
transformer, etc. are mounted in a
NEMA 1 sheet metal enclosure and are
tested as an assembly to UL1995
standards. The result is a rugged and
safe VAV, controller, and thus, overall
unit.
• When in PI-mode, EH is disabled when
the sensed flow is below the minimum
required.
• HW coil VAV units in ventilation flow
control (VFC) have a Freeze protection
algorithm to protect the water coil and
the internal space from water damage.
This is accomplished by driving the
water valve to maximum position on
alarm conditions.
Factory-commissioning of unit
System-Level Optimization
Trane controllers are designed to
integrate into Trane Tracer Summit
Systems and leverage clear and clean
unit-controller related data for system
level control decisions. Integrating a
Trane VV550 controller into a Tracer
Summit Control System provides the
next step in building system control.
Specifically, system-level decisions on
how to operate all components can be
made. Energy efficient optimization
strategies like Static Pressure
Optimization, Ventilation Reset, and
CO 2
Demand-controlled Ventilation can
be employed with the simple press of a
button. The end-result is the most
efficient and reliable building control
system available.
Simplified Installation
Factory Commissioned Quality – All
Trane DDC VAV controllers are factorycommissioned.
This means that the
DDC boards are powered and runtested
with your specific sequence
parameters. They are connected to a
communication link to make sure that
information and diagnostic data
function properly. Before any VariTrane
VAV unit ships they must pass a
rigorous quality control procedure. You
can be assured that a Trane VAV unit
with Trane DDC VAV controls will work
right out of the crate.
LonMark VV550 DDC VAV Controller
C 28
VAV-PRC008-EN

Controls—
LonMark DDC
VAV Controller
Features
&
Benefits
Zone sensor air balance – When
applied to a Trane zone sensor with
thumbwheel and on/cancel buttons, a
balancing contractor can drive the
primary air valve to maximum or
minimum airflow from the sensor to
determine the point of calibration to be
used (maximum will result in optimum
performance). The flow reading can
then be calibrated from the sensor,
without the use of additional service
tools. (Non-LCD versions)
DDC Sensor with Thumbwheel & NSB
Tenant-Finish Heat Mode – In some
office projects, the building is being
constructed as tenants are being
identified. Tenant-finish heat mode is
designed for applications when a
given floor has not been occupied. The
main AHU system is used for heat and
because the internal furnishings are
not complete, the sensors have not
been installed. In this case, the primary
valve drives open using the heat of the
main AHU to keep plumbing lines
from freezing. When available, the
operation of the VAV unit fan (series or
parallel) remains unaffected.
Controller Flexibility
• 24 VAC binary input that can be
configured as a generic input or as
occupancy input. When the DDC
controller is operating with Tracer
Summit, the status of the input is
provided to Tracer Summit for its
action. In stand-alone operation and
when configured for an occupancy
input, the input will control occupancy
status of the DDC controller.
• Auxiliary temperature analog input
configured for an auxiliary
temperature sensor. The value of the
input is used as status-only by Tracer
Summit if Tracer Summit is providing a
supply air temperature to the DDC
controller. Otherwise, the input will be
used for determining heating/cooling
control action of the VAV unit. When
the auxiliary temperature sensor is
located in the discharge of the unit,
and attached to a Trane Tracer Summit
BAS, additional test sequencing and
reporting is available to maximize VAV
system capabilities and simplify
system commissioning.
• Dual-duct support with two DDC
controllers. One DDC controller
controls the cooling air valve and the
other controller controls the heating air
valve. With constant-volume
sequences, the discharge air volume is
held constant by controlling discharge
air volume with the heating Controller.
• LonMark certified performance
ensures that a Trane VAV with
controller will provide state-of-the-art,
consistent open communication
protocol for integration with the
industry’s latest (Non-Trane) building
automation control systems, including
Johnson Control, Andover, Siemans,
Honeywell, etc.
• CO2 demand controlled ventilation
enables a HVAC system to adjust
ventilation flow based on critical zone,
average CO 2
of specified zones, etc.
Trane demand controlled ventilation
strategies are pre-defined for simplifed
application and can be easily
customized to meet the needs of a
specific system.
VAV-PRC008-EN C 29

Trane DDC VAV
Controller Logic
Control Logic
Direct Digital Control (DDC) controllers
are today’s industry standard. DDC
controllers share system-level data to
optimize system performance
(including changing ventilation
requirements, system static pressures,
supply air temperatures, etc.). Variables
available via a simple twisted-shielded
wire pair include occupied/unoccupied
status, minimum and maximum
airflow setpoints, zone temperature
and temperature setpoints, air valve
position, airflow cfm, fan status (on or
off), fan operation mode (parallel or
series), reheat status (on or off), VAV
unit type, air valve size, temperature
correction offsets, flow correction
values, ventilation fraction, etc.
With the advent of LonMark open
protocol, the most reliable VAV
controller is now available for ANY
system. Gone are the days of being
locked into a single supplier. Trane DDC
controllers provide Trane-designed
solid-state electronics intended
specifically for VAV applications
including:
1. Space Temperature Control
2. Ventilation Flow Control (100%
outside air applications)
3. Flow Tracking Space Pressurization
Control (New feature)
Flow Sensor Signal vs. Airflow Delivery
5
Controls—
LonMark DDC
VAV Controller
Space Temperature Control
Space temperature control
applications are where Trane emerged
as an industry leader in quality and
reliability. This did not occur overnight
and has continued to improve as our
controller and control logic has
improved over time. STC employs
controller logic designed to modulate
the supply airstream and associated
reheat (either local or remote) to
exactly match the load requirements of
the space.
Additionally, minimum and maximum
airflow and specific controller
sequence requirements are preprogrammed
to ensure that
appropriate ventilation standards are
consistently maintained. When
connected to a Trane Tracer Summit
control system, trend logging, remote
alarming, etc. are available to fully
utilize the power and capabilities of
your systems.
General Operation-Cooling
In cooling control action, the DDC
controller matches primary airflow to
cooling load. The DDC controller will
automatically change over to heating
control action if the supply air
temperature is above a configured/
editable setpoint. When the supply air
temperature is less than 10 degrees
below this setpoint, the controller will
automatically switch to cooling control
action. The DDC controller first chooses
the Tracer Summit-provided supply air
Controller
Logic
temperature value to use for auto
changeover. If this is not available, it
uses the temperature provided by the
optional auxiliary temperature sensor
(must be installed for inlet temperature
monitoring). If this is also not available,
it uses the heating/cooling mode
assigned by Tracer Summit or the DDC
controller’s service tool.
General Operation-Reheat
In heating control action, the DDC
controller matches primary airflow to
heating load. The DDC controller will
automatically change over to heating
control action if the supply air
temperature is above a configured/
editable setpoint. When the supply air
temperature is less than 10 degrees
below this setpoint, the controller will
automatically switch to cooling control
action. The DDC controller first
chooses the Tracer Summit-provided
supply air temperature value to use for
auto changeover. If this is not available,
it uses the temperature provided by
the optional auxiliary temperature
sensor (must be installed for inlet
temperature monitoring). If this is also
not available, it uses the heating/
cooling mode assigned by Tracer
Summit or the DDC controller’s service
tool.
When heat is added to the primary air,
the air is considered reheated. Reheat
can be either local (integral to the VAV
unit in the form of an electric coil or hot
water coil) or remote (typically
existing wall fin radiation, convector,
etc.) or any combination of local and
remote. The operating characteristics of
the four basic types of VariTrane DDC
terminal reheat are discussed.
1
4" 5" 6" 8" 10" 12" 14" 16"
Flow Sensor DP (In. wg)
0.1
0.01
10 100 1,000 10,000
Cfm
Note: Flow sensor DP (in. wg) is measured at the flow ring to aid in system balancing and commissioning. See
"Valve/Controller Airflow Guidelines" in each section for unit performance.
C 30
VAV-PRC008-EN

Controls—
LonMark DDC
VAV Controller
Controller
Logic
Single-Duct: On/Off Hot Water Reheat –
Three stages of on/off hot water reheat
are available. Two-position water valves
complete the HW reheat system and are
either fully opened or fully closed. The
heating minimum airflow setpoint is
enforced during reheat.
Stage 1 energizes when the space
temperature is at or below the heating
setpoint. When the zone temperature
rises above the active heating setpoint
by 0.5°F (0.28°C), stage 1 is de-energized.
Stage 2 energizes when the space
temperature is 1°F (0.56°C) or more
below the active heating setpoint, and is
de-energized when the space
temperature is 0.5°F (0.28°C) below the
active heating setpoint. Stage 3
energizes when the zone temperature is
2°F (1.11°C) or more below the active
heating setpoint, and de-energizes when
the space temperature is 1.5°F (0.83°C)
below the active heating setpoint. When
reheat is de-energized, the cooling
minimum airflow setpoint is activated.
Single-Duct: Proportional Hot
Water Reheat –
Proportional hot water reheat uses 3-
wire floating-point-actuator technology.
The heating minimum airflow setpoint is
enforced during reheat.
The water valve opens as space
temperature drops below the heating
setpoint. A separate reheat proportionalplus-integral
control loop from that
controlling airflow into the room is
enforced. Water valve position is
dependent on the degree that the space
temperature is below the active heating
setpoint and the time that the space
temperature has been below the active
VCEF
heating setpoint. If not already closed,
the water valve fully closes when the
zone temperature rises above the
active heating setpoint by 0.5 °F (0.28
°C). An additional on/off remote heat
output is available and energized when
the proportional valve is driven 100%
open and de-energized when the
proportional valve reaches 50% open.
When reheat is de-energized, the
cooling minimum airflow setpoint is
activated. Again, these reheat devices
can be either local or remote.
Single-Duct: On/Off Electric Reheat –
One, two, or three stages of staged
electric reheat are available. The
heating minimum airflow setpoint is
enforced during reheat.
Stage 1 is energized when the space
temperature falls below the active
heating setpoint and minimum airflow
requirements are met. When the zone
temperature rises above the active
heating setpoint by 0.5°F (0.28°C),
stage 1 is de-energized. Stage 2
energizes when the space temperature
is 1°F (0.56°C) or more below the active
heating setpoint, and is de-energized
when the space temperature is 0.5°F
(0.28°C) below the active heating
setpoint. Stage 3 energizes when the
zone temperature is 2°F (1.11°C) or
more below the active heating
setpoint, and de-energizes when the
space temperature is 1.5°F (0.83°C)
below the active heating setpoint.
When reheat is de-energized, the
cooling minimum airflow setpoint is
activated.
Single-Duct: Pulse-Width Modulation
of Electric Heat –
One to three stages of pulse-width
modulation of electric heat are
available. Energizing for a portion of a
three-minute time period modulates
the electric heater. This allows exact
load matching for energy efficient
operation, and optimum zone
temperature control. The heating
minimum airflow setpoint is enforced
during reheat.
The amount of reheat supplied is
dependent on both the degree that the
space temperature is below the active
heating setpoint and the time that the
space temperature has been below the
active heating setpoint. If not already
off, reheat de-energizes when the zone
temperature rises more than 0.5°F
(0.28°C) above the heating setpoint.
The Stage 1 “on” time is proportional
to the amount of reheat required. For
example, when 50% of stage 1
capacity is required, reheat is on for 90
seconds and off for 90 seconds. When
75% of stage 1 capacity is required,
reheat is on for 135 seconds and off for
45 seconds. When 100% of stage 1
capacity is required, reheat is on
continuously.
Stage 2 uses the same “on” time logic
as stage 1 listed above, except stage 1
is always energized. For example,
when 75% of unit capacity is required,
stage 1 is energized continuously, and
stage 2 is on for 90 seconds and off for
90 seconds. When reheat is deenergized,
the cooling minimum
airflow setpoint is activated. Caution:
Care should be taken when sizing
electric heaters. Leaving air
temperatures (LAT) should not exceed
100°–110°F, with 95°F being the optimal
for zone temperature and comfort
control. At elevated LATs, room
stratification may result in uneven air
distribution and zone temperature
complaints. To prevent stratification,
the warm air temperature should not
be more than 20°F (6.7°C) above zone
air temperature. (See Diffuser, “D”,
section for additional application
details)
VAV-PRC008-EN C 31

Controls—
LonMark DDC
VAV Controller
Controller
Logic
Fan-Powered Terminal Units:
On/Off Hot Water Reheat –
One or two stages of on/off hot water
reheat are available. Two position
water valves complete the HW reheat
system and are either fully opened or
fully closed. The heating minimum
airflow setpoint is enforced during
reheat.
On parallel fan-powered units, the fan
is energized upon a call for heating. The
parallel fan is turned off when the
space temperature rises above the fan
on/off point (active heating setpoint
plus fan offset) plus 0.5°F (0.28°C).
Series fan-powered terminal unit fans
are continuously energized during
occupied mode. When unoccupied, the
fan is energized upon a call for heating
or cooling and de-energized when
unoccupied zone set point is satisfied.
When the zone temperature falls below
the active heating setpoint, the UCM
modulates the primary airflow to the
minimum heating airflow setpoint.
Stage 1 energizes when the space
temperature is below the active
heating setpoint, and is de-energized
when the space temperature is 0.5°F
(0.28°C) above the active heating
setpoint. Stage 2 energizes when the
zone temperature is 1°F (0.56°C) or
more below the active heating
setpoint, and de-energizes when the
space temperature is 0.5°F (0.28°C)
below the active heating setpoint.
When reheat is de-energized, the
cooling minimum airflow setpoint is
activated.
Fan-Powered Terminal Units:
Proportional Hot Water Reheat –
Proportional hot water reheat uses
3-wire floating-point-actuator
technology. The heating minimum
airflow setpoint is enforced during
reheat.
On parallel fan-powered units, the fan
is energized upon a call for heating. The
parallel fan is turned off when the
space temperature rises above the fan
on/off point (active heating setpoint
plus fan offset) plus 0.5ºF (0.28ºC).
Series fan-powered terminal unit fans
are continuously energized during
occupied mode. When unoccupied, the
fan is energized upon a call for heating
or cooling and de-energized when
unoccupied zone setpoint is satisfied.
The water valve opens as space
temperature drops below the heating
setpoint. A separate reheat
C 32
VPEF
proportional-plus-integral control loop
from that controlling airflow into the
room is enforced. The degree to which
the hot water valve opens is
dependent on both the degree that the
space temperature is below the active
heating setpoint and the time that the
space temperature has been below the
active heating setpoint. If not already
closed, the water valve fully closes
when the zone temperature rises
above the active heating setpoint by
0.5 °F (0.28 °C). When reheat is deenergized,
the cooling minimum
airflow setpoint is activated.
Fan-powered Terminal Units:
On/Off Electric Reheat –
One or two stages of staged electric
reheat are available. The heating
minimum airflow setpoint is enforced
during reheat.
On parallel fan-powered units, the fan
is energized upon a call for heating. The
parallel fan is turned off when the
space temperature rises above the fan
on/off point (active heating setpoint
plus fan offset) plus 0.5°F (0.28°C).
Series fan-powered terminal unit fans
are continuously energized during
occupied mode. When unoccupied, the
fan is energized upon a call for heating
or cooling and de-energized when
unoccupied zone set point is satisfied.
Stage 1 energizes when the space
temperature is below the active
heating setpoint, and is de-energized
when the space temperature rises
0.5°F (0.28°C) above the active heating
setpoint. Stage 2 energizes when the
space temperature is 1.0°F (0.56°C) or
more below the active heating
setpoint, and is de-energized when the
space temperature is 0.5°F (0.28°C)
below the active heating setpoint.
When reheat is de-energized, the
cooling minimum airflow setpoint is
activated.
Fan-powered Terminal Units:
Pulse-Width Modulation of Electric
Heat –
One or two stages of pulse-width
modulation of electric heat are
available. Energizing for a portion of a
three-minute time period modulates
VSEF
the electric heater. This allows exact
load matching for energy efficient
operation and optimum zone
temperature control. The heating
minimum airflow setpoint is enforced
during reheat.
On parallel fan-powered units, the fan
is energized upon a call for heating. The
parallel fan is turned off when the
space temperature rises above the fan
on/off point (active heating setpoint
plus fan offset) plus 0.5°F (0.28°C).
Series fan-powered terminal unit fans
are continuously energized during
occupied mode. When unoccupied, fan
is energized upon a call for heating or
cooling and de-energized when
unoccupied zone set point is satisfied.
The amount of reheat supplied is
dependent on both the degree that the
space temperature is below the active
heating setpoint and the time that the
space temperature has been below the
active heating setpoint. If not already
off, reheat de-energizes when the
space temperature rises 0.5°F (0.28°C)
above the active heating setpoint. The
Stage 1 “on” time is proportional to the
amount of reheat required. For
example, when 50% of stage 1
capacity is required, reheat is on for 90
seconds and off for 90 seconds. When
75% of stage 1 capacity is required,
reheat is on for 135 seconds and off for
45 seconds. When 100% of stage 1
capacity is required, reheat is on
continuously.
Stage 2 uses the same “on” time logic
as stage 1 listed above, except stage 1
is always energized. For example,
when 75% of unit capacity is required,
stage 1 is energized continuously, and
stage 2 is on for 90 seconds and off for
90 seconds. When reheat is deenergized,
the cooling minimum
airflow setpoint is activated. When
reheat is de-energized, the cooling
minimum airflow setpoint it activated.
VAV-PRC008-EN

Controls—
LonMark DDC
VAV Controller
Ventilation
Control
Ventilation Control
Ventilation control enhances the
usability of Trane DDC controllers in
more select applications that require
measurement of outside air
(ventilation). Ventilation control is
designed for use with constant volume
single-duct VAV units which modulate
the primary damper and associated
reheat to maintain an average constant
discharge air temperature. The reheat
is modulated to provide discharge air
temperature consistent with AHU
supply air temperature (typically 50º–
60ºF). This is critical to ensure that
ASHRAE Standard 62 Ventilation
standards are attained, consistently
maintained, and monitored. When
connected to a Trane Summit control
system, trend logging, remote
alarming, etc. is available. In fact, the
Trane Tracer Control System can
provide unmatched “peace of mind”
by calling/paging the appropriate
person(s) when specific alarms occur.
VAV-PRC008-EN C 33

Controls—
LonMark DDC
VAV Controller
Flow
Tracking
Flow Tracking Control
This enhanced VAV DDC controller
feature allows two Trane VV550
controllers to coordinate modulation
simultaneously. This allows a specific
CFM offset to be maintained. The CFM
offset provides pressurization control
of an occupied space, while
maintaining the comfort and energy
savings of a VAV system. A flow
tracking system in a given zone
consists of a standard Space Comfort
Control VAV (see B )unit plus a singleduct,
cooling-only, exhaust VAV unit
(see C ). As the supply VAV unit
modulates the supply airflow through
the air valve to maintain space
comfort, the exhaust box modulates a
similar amount to maintain the
required CFM differential. This is a
simple, reliable means of
pressurization control, which meets the
requirements of the majority of zone
pressurization control applications.
Typical applications include:
• School and University laboratories
• Industrial laboratories
• Hospital operating rooms
• Hospital patient rooms
• Research and Development facilities
• And many more…
The CFM offset is assured and can be
monitored and documented when
connected to a Trane Tracer Summit
Building Automation System. Flow
Tracking Control is designed to meet
most pressurization control projects. If
an application calls for pressure control
other than flow tracking, contact your
local Trane Sales Office for technical
support.
How Does It Operate?
Exhaust
Supply VAV
B
To other VAVs or
Main Control Panel
Communication link
A
Primary Air
from Main
AHU
C
T
Occupied Space
C 34
VAV-PRC008-EN

Controls—
LonMark DDC
VAV Controller
Control
Drawings
VV550—DDC LonMark Controller for Single-Duct Terminals
DD11–Space Temp Control Cooling Only
DD12–Space Temp Control w/ N.C. Hot Water Valve
DD13–Space Temp Control w/ Modulating Hot Water Valve
DD14 Space Temp Control w/ Stage Electric Heat
DD15–Space Temp Control w/ Pulse-width Modulation
DD17–Space Temp Control w/ N.O. Hot Water Valve
8.
10.
OPTIONAL
TRANSFORMER
HEATER STAGE
CONTACTOR(S)
7.
1ST 2ND 3RD
TO
DAMPER
ACTUATOR
24VAC 60HZ
NEC CLASS - 2
CONTROL CIRCUIT
LOAD = 8 VA
(WITHOUT HEAT)
6.
Y
Y
Y
BL
BL
BR
WH-HOT
O
WH-HOT
V
G-OPEN
R-CLOSE
BL
R
OPTIONAL
FUSE, DISCONNECT
& TRANSFORMER
Y or (W)
(BK)
or
BL
GREEN
SCREW
8.
OPTIONAL
DISCONNECT
SWITCH
TB1-1
J8
10.
OPTIONAL POWER
(50VA)
9.
BK
BL
Y
OPTIONAL
FUSE
VV550
TB1-2
TB1-1
GND 24V
Tracer VV550
TB2-2
TWISTED PAIR
COMMUNICATIONS
WIRING
FIELD INSTALLED
NOTES:
1. Factory Wiring
Field Wiring
Optional or Alternate Wiring
2. 1/4" Quick connect required for all field connections.
TB3-5
R
G
PRESSURE
TRANSDUCER
+
VOUT
-
VV550
CONTROL BOX
TB3-6
OPTIONAL FIELD INSTALLED
AUX TEMP SENSOR
5.
TO J8
TO J9
TO J10
R (HOT)
O (COMMON)
BK (RETURN)
Y
OPTIONAL FIELD INSTALLED
OCCUPANCY SENSOR
W (HOT)
BK (CLOSE)
R (OPEN)
(TB4-2) 24VAC
(TB4-1) BIP
OPTIONAL FIELD
INSTALLED ZONE SENSOR
(TB4-2) 24VAC
(TB1-2) GND
TB2-6
TB3-1
TB2-5 TB3-2
TB3-3
5 4 3 2 1
ZONE SENSOR
W/ COMM. JACK
REMOTE MTD.
3. 4.
NOT CONNECTED
PROP.
WATER
VALVE
24VAC
12VA MAX
OPTIONAL FIELD INSTALLED
PROPORTIONAL WATER VALVE
3.
4.
5.
6.
7.
8.
Zone sensor terminals 4 and 5 required twisted pair wiring for communications jack equipped zone sensor option.
No additional wiring required for night setback override (ON/CANCEL).
The optional binary input connects between TB4–1 (BIP) and 24VAC (HOT) from transformer. The binary input
can be reconfigured as an occupancy input via the communications interface.
If unit mounted transformer is not provided, polarity from unit to unit must be maintained to prevent permanent
damage to control board. If one leg of 24VAC supply is grounded, then ground leg must be connected to TB1–2.
Contactors are 24 VAC: 12VA max/coil (Mercury contactors). 10VA max/coil (Magnetic contactors).
Optional fuse, disconnect switch and transformer wiring (cooling only or hot water units). Wiring goes through
TO J9
TO J8
ON - OFF
WATER VALVE
24 VAC
12VA MAX
OPTIONAL FIELD INSTALLED
0N-OFF WATER VALVE
9.
10.
Transformer wire colors: 120V– – –O, 277V–BR, 480V–R/BK, 575V–R, 190V–R, 220V–R, 347V–R.
11.
Three-stage not available with pulse-width modulation.
VAV-PRC008-EN C 35

Y
Y
Controls—
LonMark DDC
VAV Controller
Control
Drawings
VV550—DDC LonMark Controller for Dual-Duct Terminals
DD11–Space Temp Control (No Remote Heat) and Heating Control
DD18–Space Temp Control (No Remote Heat) and Heating Control—Constant-Volume Control
COOLING VALVE
DAMPER
ACTUATOR
WIRING
6.
24VAC 50/60 HZ
NEC CLASS-2
CONTROL CIRCUIT
LOAD = 16VA
24VAC
TO TB1 ON
HEATING
VALVE UCM
Y
TB4
1
2
HOT
HOT
OPEN
CLOSE
BL
OPTIONAL
FUSE, DISCONNECT
& TRANSFORMER
(BK)
or
GROUND
SCREW
OPTIONAL
DISCONNECT
BL
OPTIONAL POWER
TRANSFORMER
(50VA)
OPTIONAL
BL FUSE
Y
TB4
1
2
Tracer VV550
PRESSURE
TRANSDUCER
R +
G VOUT
-
TB3-5
TB3-6
OPTIONAL FIELD INSTALLED
AUX TEMP SENSOR
5.
R (HOT)
(TB4-2) 24VAC
VV550
CONTROL BOX
Y
(TB4-1) BIP
(TB4-2) 24VAC
NOT CONNECTED
TWISTED PAIR
COMMUNICATIONS
WIRING
FIELD INSTALLED
OCCUPANCY SENSOR
TB2-6
TB3-1
TB2-5 TB3-2
TB3-3
HEATING VALVE
24VAC
TO TB4 IN
COOLING
5 4 3 2 1
DAMPER
ACTUATOR
WIRING
4.
OPTIONAL FIELD
INSTALLED ZONE SENSOR
Y
BL
BL
HOT
HOT
OPEN
CLOSE
NOTE:
1.
Factory Wiring
Field Wiring
Optional or Alternate Wiring
2. 1/4" quick connect required for all field connections.
Tracer VV550
PRESSURE
TRANSDUCER
R +
BK
G VOUT
-
3. Zone sensor terminals 4 and 5 require twisted pair wiring for communications
jack equipped zone sensor option.
4. No additional wiring required for night setback override (ON/CANCEL).
5. The optional binary input connects between TB4-1 (BIP) and 24VAC (HOT) from transformer. The binary
input can be reconfigured as an occupancy input via the communications interface.
6. If unit mounted transformer is not provided, polarity from unit to unit must be maintained to prevent permanent
damage to control board. If one leg of 24VAC supply is grounded, then ground leg must be connected to TB1-2.
7. Optional fuse, disconnect switch and transformer wiring.
8. Cooling controller space temperature and space setpoint network variables should be bound heating controller.
VV550
CONTROL BOX
C 36
TWISTED PAIR
COMMUNICATIONS
WIRING
FIELD INSTALLED
VAV-PRC008-EN

Controls—
LonMark DDC
VAV Controller
Control
Drawings
VV550—DDC LonMark Controller for Fan-Powered Terminals
DD11–Space Temp Control Cooling Only
DD12–Space Temp Control w/ N.C. Hot Water Valve
DD13–Space Temp Control w/ Modulating Hot Water Valve
DD14–Space Temp Control w/ Stage Electric Heat
DD15–Space Temp Control w/ Pulse-width Modulation
DD17–Space Temp Control w/ N.O. Hot Water Valve
6.
TO TRANSFORMER
OPTIONAL FIELD INSTALLED
ELECTRIC HEATER
7. 8.
HEATER STAGE
CONTACTOR(S)
TO
DAMPER
ACTUATOR
TO FAN RELAY
5. R (HOT)
O (COMMON)
GR (NC CONTACT)
BK (RETURN)
Y
(TB4-2) 24VAC
(TB4-1) BIP
(TB4-2) 24VAC
(TB1-2) GND
NOT CONNECTED
1ST
2ND
OPTIONAL FIELD INSTALLED
OCCUPANCY SENSOR
BR
R (FAN)
BR
Y
O
V
BL
TB2-6
TB3-1
TB2-5 TB3-2
TB3-3
Y
BL
BR
BR
O
V
R (FAN)
WH-HOT
WH-HOT
G-OPEN
R-CLOSE
5
4 3 2 1
ZONE SENSOR
REMOTE MTD.
4.
OPTIONAL FIELD
INSTALLED ZONE SENSOR
TB3-5
TB3-6
OPTIONAL FIELD INSTALLED
AUX TEMP SENSOR
Tracer VV550
R
BK
G
PRESSURE
TRANSDUCER
+
VOUT
-
TO J8
TO J9
TO J10
TO J9
TO J8
W (HOT)
BK (CLOSE)
R (OPEN)
PROP.
WATER
VALVE
24VAC
12VA MAX
PROPORTIONAL WATER VALVE
OPTIONAL FIELD INSTALLED
0N-OFF WATER VALVE
ON - OFF
WATER VALVE
24 VAC
12VA MAX
VV550
CONTROL BOX
TWISTED PAIR
COMMUNICATIONS
WIRING
FIELD INSTALLED
NOTES:
1. Factory Wiring
Field Wiring
Optional or Alternate Wiring
2.
1/4" Quick connect required for all field connections.
3.
4.
5.
No additional wiring required for night setback override (ON/CANCEL).
The optional binary input connects between TB4–1 (BIP) and 24VAC (HOT from transformer. The binary input can be
Transformer provided in all units.
8.
Contactors are 24 VAC: 12 VA max/coil (Mercury contactors). 10VA max/coil (Magnetic contactors).
VAV-PRC008-EN C 37

Controls—
LonMark DDC
VAV Controller
Control
Drawings
VV550—DDC LonMark Controller for ECM Fan-Powered Terminals
DD11—Space Temp Control Cooling Only
DD12—Space Temp Control w/ N.C. Hot Water Valve
DD13—Space Temp Control w/ Modulating Hot Water Valve
DD14—Space Temp Control w/ Stage Electric Heat
DD15—Space Temp Control w/ Pulse-width Modulation
DD17—Space Temp Control w/ N.O. Hot Water Valve
HEATER STAGE
CONTACTOR(S)
OPTIONAL OR FIELD INSTALLED 7.
ELECTRIC HEATER
TO
DAMPER
ACTUATOR
8.
TO TRANSFORMER
TO
ECM
MOTOR
1ST
2ND
Y
BL
WH-HOT
WH-HOT
G-OPEN
R-CLOSE
Y Y
BL BL
BL
Y
R
BR
O
BK
V
TB3-5
TB3-6
NEUT.
24V
BK
BL
RED
RED
2 4
6.
OPTIONAL FIELD INSTALLED
AUX TEMP SENSOR
Tracer VV550
TB4-2
R
BK
G
BL
1
24V
3
+
VOUT
-
MOTOR
RELAY
PRESSURE
TRANSDUCER
R
ECM
BOARD
W
BK
G
R
TB2-6
TB3-1
TB2-5 TB3-2
TB3-3
5 4 3 2 1
ZONE SENSOR
W/ COMM. JACK
REMOTE MTD.
3. 4.
OPTIONAL FIELD
INSTALLED ZONE SENSOR
VV550
CONTROL BOX
TWISTED PAIR
COMMUNICATIONS
WIRING
FIELD INSTALLED
5. R (HOT)
O (COMMON)
GR (NC CONTACT)
BK (RETURN)
Y
(TB4-2) 24VAC
(TB4-1) BIP
(TB4-2) 24VAC
(TB1-2) GND
NOT CONNECTED
OPTIONAL FIELD INSTALLED
OCCUPANCY SENSOR
TO J8
TO J9
TO J10
W (HOT)
BK (CLOSE)
R (OPEN)
PROP.
WATER
VALVE
24VAC
12VA MAX
TO J9
TO J8
ON - OFF
WATER VALVE
24 VAC
12VA MAX
OPTIONAL FIELD INSTALLED
PROPORTIONAL WATER VALVE
OPTIONAL FIELD INSTALLED
0N-OFF WATER VALVE
NOTES:
1.
Factory Wiring
Field Wiring
Optional or Alternate Wiring
2.
3.
4.
5.
6.
1/4" Quick connect required for all field connections.
Zone sensor terminals 4 and 5 require twisted pair wiring for communcations jack equipped zone sensor option.
No additional wiring required for night setback override (ON/CANCEL).
The optional binary input connects between TB4–1 (BIP) and 24VAC (HOT) from transformer. Input can be
reconfigured as an occupancy input via the communications interface.
Fan CFM can be easily adjusted from its min CFM to its max CFM via the ECM control board dial switches with
a flat-head screwdriver. The switches set the percentage flow.
Contactors are 24 VAC: 12VA max/coil (Mercury contactors). 10VA max/coil (Magnetic contactors).
C 38
9.
Three-stage not available with pulse-width modulation.
VAV-PRC008-EN

Controls—
LonMark DDC
VAV Controller
Accessories
LonMark Direct Digital
Controller—Unit Control
Module
The Trane LonMark direct digital
controller Unit Control Module (DDC-
UCM) is a microprocessor-based
terminal unit with non-volatile memory
which provides accurate airflow and
room temperature control of Trane and
non-Trane VAV air terminal units.
LonMark provides a simple open
protocol to allow integration of Trane
VAV units and controls into other
existing control systems. The UCM can
operate in pressure-independent or
pressure-dependent mode and uses a
proportional plus integral control
algorithm. The controller monitors
zone temperature setpoints, zone
temperature and its rate of change and
valve airflow (via flow ring differential
pressure). The controller also accepts
an auxiliary duct temperature sensor
input or a supply air temperature value
from Tracer Summit. Staged electric
heat, pulse width modulated electric
heat, proportional hot water heat or on/
off hot water heat control are provided
when required. The control board
operates using
24-VAC power. The Trane LonMark
DDC-UCM is also a member of the
Trane Integrated Comfort systems
(ICS) family of products. When used
with a Trane Tracer Summit building
management controller or other Trane
controllers, zone grouping and unit
diagnostic information can be
obtained. Also part of ICS is the factorycommissioning
of parameters
specified by the engineer (see "Factory-
Installed vs. Factory-Commissioned" in
the Features and Benefits section for
more details).
SPECIFICATIONS
Supply voltage:
24 VAC, 50/60 Hz
Maximum VA load:
No heat or fan:
8 VA (Board, Transducer, Zone Sensor,
and Actuator)
Note: If using field-installed heat,
24 VAC transformer should be sized
for additional load.
Output ratings:
Actuator Output: 24 VAC at 12 VA
1st Stage Reheat: 24 VAC at 12 VA
2nd Stage Reheat: 24 VAC at 12 VA
3rd Stage Reheat: 24 VAC at 12 VA
Binary input:
24 VAC, occupancy or generic.
Auxiliary input:
Can be configured for discharge or
primary air temperature sensor.
Operating environment:
32 to 140°F, (0 to 60°C)
5% to 95% RH, Non-condensing
Storage environment:
-40 to 180°F (-40 to 82.2°C),
5% to 95%RH, Non-Condensing
For additional accessory information, refer to pages C 17 – 25.
Physical dimensions:
Width:
5.5" (139.7 mm)
Length:
4.5" (69.85 mm)
Height:
2.0" (44.45 mm)
Connections:
1/4" (6.35 mm) Stab Connections
Communications:
LonMark – Space Comfort Control
(SCC) profile with FTT-10 transceiver.
22 awg. unshielded level 4
communication wire.
Fan control:
Series fan:
Parallel fan:
On unless unoccupied
and min. flow has been
released.
On when zone
temperature is less than
heating setpoint plus fan
offset. Off when zone
temperature is more than
heating setpoint plus fan
offset plus 0.5°F (0.28°C).
Heat staging:
Staged electric or hot water
proportional or pulse-width
modulation
Note: Trane LonMark DDC-UCM
controllres can also take advancage of
factory-commissioned quality on non-
Trane systems through LonMark open
protocol.
VAV-PRC008-EN C 39

Controls—
LonMark DDC
VAV Controller
Data Lists
Table 1 provides an input/output listing for Tracer VV550/551 VAV controllers. Table 2 provides the configuration properties for the
controller. The content of the lists conforms to both the LonMark SCC functional profile 8500 and the LonMark node object.
Table 1. Input/output listing
Input description Input SNVT type
Space temperature nviSpaceTemp SNVT_temp_p
Setpoint nviSetpoint SNVT_temp_p
Occupancy, schedule nviOccSchedule SNVT_tod_event
Occupancy, manual command nviOccManCmd SNVT_occupancy
Occupancy sensor nviOccSensor SNVT_occupancy
Application mode nviApplicMode SNVT_hvac_mode
Heat/cool mode input nviHeatCool SNVT_hvac_mode
Fan speed command nviFanSpeedCmd SNVT_switch
Auxiliary heat enable nviAuxHeatEnable SNVT_switch
Valve override nviValveOverride SNVT_hvac_overid
Flow override nviFlowOverride SNVT_hvac_overid
Emergency override nviEmergOverride SNVT_hvac_emerg
Source temperature nviSourceTemp SNVT_temp_p
Space CO2 nviSpaceCO2 SNVT_ppm
Clear alarms/diagnostics nviRequest* SNVT_obj_request
Air flow setpoint input nviAirFlowSetpt SNVT_flow
* Part of the node object.
Output description Output SNVT type
Space temperature nvoSpaceTemp SNVT_temp_p
Unit status, mode nvoUnitStatus SNVT_hvac_status
Effective setpoint nvoEffectSetpt SNVT_temp_p
Effective occupancy nvoEffectOccup SNVT_occupancy
Heat cool mode nvoHeatCool SNVT_hvac_mode
Setpoint nvoSetpoint SNVT_temp_p
Discharge air temperature nvoDischAirTemp SNVT_temp_p
Space CO2 nvoSpaceCO2 SNVT_ppm
Effective air flow setpoint nvoEffectFlowSP SNVT_flow
Air flow nvoAirFlow SNVT_flow
File table address nvoFileDirectory* SNVT_address
Object status nvoStatus* SNVT_obj_status
Alarm message nvoAlarmMessage SNVT_str_asc
*Part of the node object.
Table 2. Configuration properties
Configuration property description Configuration property SNVT type SCPT reference
Send heartbeat nciSndHrtBt SNVT_time_sec SCPTmaxSendTime (49)
Occ temperature setpoints nciSetpoints SNVT_temp_setpt SCPTsetPnts (60)
Minimum send time nciMinOutTm SNVT_time_sec SCPTminSendTime (52)
Receive heartbeat nciRecHrtBt SNVT_time_sec SCPTmaxRcvTime (48)
Location label nciLocation SNVT_str_asc SCPTlocation (17)
Local bypass time nciBypassTime SNVT_time_min SCPTbypassTime (34)
Manual override time nciManualTime SNVT_time_min SCPTmanOverTime (35)
Space CO2 limit nciSpaceCO2Lim SNVT_ppm SCPTlimitCO2 (42)
Nominal air flow nciNomFlow SNVT_flow SCPTnomAirFlow (57)
Air flow measurement gain nciFlowGain SNVT_multiplier SCPTsensConstVAV (67)
Minimum air flow nciMinFlow SNVT_flow SCPTminFlow (54)
Maximum air flow nciMaxFlow SNVT_flow SCPTmaxFlow (51)
Minimum air flow for heat nciMinFlowHeat SNVT_flow SCPTminFlowHeat (55)
Maximum air flow for heat nciMaxFlowHeat SNVT_flow SCPTmaxFlowHeat (37)
Minimum flow for standby nciMinFlowStdby SNVT_flow SCPTminFlowStby (56)
Firmware major version nciDevMajVer* n/a SCPTdevMajVer (165)
Firmware minor version nciDevMinVer* n/a SCPTdevMinVer (166)
Flow offset for tracking applications nciFlowOffset SNVT_flow_f SCPToffsetFlow (265)
Local heating minimum air flow nciMinFlowUnitHt SNVT_flow SCPTminFlowUnitHeat (270)
Minimum flow for standby heat nciMnFlowStbyHt SVNT_flow SCPTminFlowStbyHeat(263)
* Part of the node object.
C 40
VAV-PRC008-EN

Controls—
Analog
Options
Single-Duct Terminal Unit (VCCF, VCWF, and VCEF)
Unit Heat Control Description Page #
Cooling Only EI05 Cooling Only C 42
(VCCF) EI28 Cooling Only With Remote Hot Water Reheat and Electric Reheat - Automatic Dual Minimum C 43
EI29 Cooling Only With Remote Hot Water Reheat and Electric Reheat - Constant Volume C 43
Hot Water EI05 Cooling With Hot Water Reheat C 42
(VCWF) EI28 Cooling With Hot Water Reheat - Automatic Dual Minimum C 43
EI29 Cooling With Hot Water Reheat - Constant Volume C 43
Electric EI05 Cooling With Electric Reheat C 42
(VCEF) EI28 Cooling With Electric Reheat - Automatic Dual Minimum C 43
EI29 Cooling With Electric Reheat - Constant Volume C 43
Fan-Powered Terminal Units (VPCF, VPWF, VPEF, VSCF, VSWF, and VSEF)
Low-Height Fan-Powered Terminal Units (LPCF, LPWF, LPEF, LSCF, LSWF, and LSEF)
Unit Heat Control Description Page #
Cooling Only
Hot Water EI05 Cooling With Hot Water Reheat and Electric Reheat C 44
Electric
(VPxF, LPxF)
Cooling Only
Hot Water EI71 Cooling With Hot Water Reheat and Electric Reheat - Duct Pressure Switch C 45
Electric
(VSxF, LSxF)
VAV-PRC008-EN C 41

AMERICAN STANDARD INC.
R THE TRANE COMPANY
TP4
TP3
TP2
Controls—
Analog
Control
Drawings
VCCF, VCWF, and VCEF – Single-Duct Terminal Units
(Normal Operation: Cooling With Reheat Capability)
EI05 – Cooling Only
EI05 – Cooling with Hot Water Reheat and Electric Rreheat
An analog signal from the zone sensor is used to compare the difference in the zone temperature and the zone
setpoint. On a rise in zone temperature above the setpoint, the controller outputs a 24-VAC signal, compensated for
changing duct pressures, to open the air valve and to increase primary cooling airflow. Upon a decrease in zone
temperature, the opposite action occurs. Minimum and maximum primary airflow settings are maintained by the
controller and are adjustable through potentiometers on the controller board. Upon a continued decrease in zone
temperature, below setpoint, the reheat is enabled. For VCCF units with remote hot water reheat and VCWF units,
the hot water valve is opened. For VCCF with remote electric reheat and VCEF units, the electric heat stages
are energized.
Water Valve
Electric Heater
24 VAC 60 HZ
NEC Class - 2
Control Circuit
Board = 8 VA
Min Load = 12 VA
Transformer
50 VA
24 VAC 60 HZ
(Optional)
BL
Y
3
2
1
TB1-1
TB1-2
Zone Sensor
Remote Mtd.
J9
J7
J7
TB1-1
TB1-2
TB1-3
TB1-4
TB1-5
On-Off
Normally Closed
24 VAC, 60 HZ
12 VA Max
J11 J10 J9
J11
J10
J9
J7
J19
J18
J1
J3
3rd Stage
2nd Stage
1st Stage
Hot
BL-HOT
BK-OPEN
R-CLOSE
Contactor(s)
24 VAC, 12 VA
Max/Coil
M
Air Valve
Actuator
4VA
R68 R69 R67 R8 TP1
G
BK
R
J15
Pressure
Transducer
C 42
Notes:
1.
FACTORY INSTALLED.
OPTIONAL OR INSTALLED BY OTHERS.
2. No slaving of multiple units to a single zone sensor is allowed.
3. Field connections are TB1-3, TB1-4, TB1-5, J7, J9, J10, and J11.
VAV-PRC008-EN

AMERICAN STANDARD INC.
R THE TRANE COMPANY
TP4
TP3
TP2
Controls—
Analog
Control
Drawings
VCCF, VCWF, and VCEF – Single-Duct Terminal Units
(Normal Operation: Cooling With Reheat Capability and Auto Dual Minimum
or Constant Volume)
EI28 - Cooling With Hot Water Reheat and Electric Reheat - Auto Dual Minimum
EI29 - Cooling With Hot Water Reheat and Electric Reheat - Constant Volume
An analog signal from the zone sensor is used to compare the difference in the zone temperature and the zone
setpoint. On a rise in zone temperature above the setpoint, the controller outputs a 24-VAC signal, compensated for
changing duct pressures, to open the air valve and to increase primary cooling airflow. Upon a decrease in zone
temperature, the opposite action occurs. Minimum and maximum primary airflow settings are maintained by the
controller and are adjustable through potentiometers on the controller board. Upon a continued decrease in zone
temperature, below setpoint, the reheat is enabled. For VCCF units with remote hot water reheat and VCWF units,
the hot water valve is opened. For VCCF with remote electric reheat and VCEF units, the electric heat stages are
energized. If the pins on jumper J18 onthe board are connected, then the controller will control the air valve
actuator to its heating minimum primary airflow when reheat is enabled (EI28). For EI29, The unit shall operate
to constant volume flow regardless of changes in space temperature. The pins on jumper J15 on the board must
be connected for constant volume mode to be active.
24 VAC 60 HZ
NEC Class - 2
Control Circuit
Board = 8 VA
Min Load = 12 VA
Transformer
50 VA
24 VAC 60 HZ
(Optional)
BL
Y
3
2
1
TB1-1
TB1-2
Zone Sensor
Remote Mtd.
J9
J7
J7
TB1-1
TB1-2
TB1-3
TB1-4
TB1-5
Water Valve
On-Off
Normally Closed
24 VAC, 60 HZ
12 VA Max
J11 J10 J9
J11
J10
J9
J7
J19
J18
J1
J3
3rd Stage
2nd Stage
1st Stage
Hot
BL-HOT
BK-OPEN
R-CLOSE
Electric Heater
Contactor(s)
24 VAC, 12 VA
Max/Coil
M
Air Valve
Actuator
4VA
R68 R69 R67 R8 TP1
G
BK
R
J15
Pressure
Transducer
Notes:
1. FACTORY INSTALLED.
OPTIONAL OR INSTALLED BY OTHERS.
2. No slaving of multiple units to a single zone sensor is allowed.
3. Field connections are TB1-3, TB1-4, TB1-5, J7, J9, J10, and J11.
VAV-PRC008-EN C 43

AMERICAN STANDARD INC.
R THE TRANE COMPANY
TP4
TP3
TP2
Controls—
Analog
Control
Drawings
For Use With Parallel Fan-Powered Terminals
(Normal Operation: Cooling With Reheat Capability)
EI05 – Cooling Only
EI05 – Cooling Only with Hot Water Reheat and Electric Reheat
An analog signal from the zone sensor is used to compare the difference in the zone temperature and the zone
setpoint. On a rise in zone temperature above the setpoint, the controller outputs a 24-VAC signal, compensated for
changing duct pressures, to open the air valve and to increase primary cooling airflow. Upon a decrease in zone
temperature, the opposite action occurs. Minimum and maximum primary airflow settings are maintained by the
controller and are adjustable through potentiometers on the controller board. Upon a continued decrease in zone
temperature, below setpoint, the fan is energized. If the zone temperature continues to decrease then reheat is
enabled. For VPCF and LPCF units with remote hot water reheat and VPWF and LPWF units, the hot water valve is
opened. For VPCF and LPCF units with remote electric reheat and VPEF and LPEF units, the electric heat stages
are energized.
J10
J7
Water Valve
On-Off
Normally Closed
24 VAC, 60 HZ
12 VA Max
J11
J10
J7
2nd Stage
1st Stage
Hot
Electric Heater
Contactor(s)
24 VAC, 12 VA
Max/Coil
Transformer
50 VA
24 VAC 60 HZ
NEC Class - 2
Control Circuit
Board = 8 VA
Min Load = 12 VA
Fan Control
3
2
1
R-Fan
BR
BL
Y
Zone Sensor
Remote Mtd.
J7
TB1-1
TB1-2
TB1-3
TB1-4
TB1-5
J11 J10 J9
R68 R69 R67 R8 TP1
J19
J18
J1
J3
BL-HOT
BK-OPEN
R-CLOSE
M
Air Valve
Actuator
4VA
G
BK
R
J15
Pressure
Transducer
C 44
Notes:
1.
FACTORY INSTALLED.
OPTIONAL OR INSTALLED BY OTHERS.
2. No slaving of multiple units to a single zone sensor is allowed.
3. Field connections are TB1-3, TB1-4, TB1-5, J7, J10, and J11.
VAV-PRC008-EN

AMERICAN STANDARD INC.
R THE TRANE COMPANY
TP4
TP3
TP2
Controls—
Analog
Control
Drawings
For Use With Series Fan-Powered Terminals
(Normal Operation: Cooling With Reheat Capability)
EI71 – Cooling Only - Duct Pressure Switch
EI71 – Cooling with Hot water Reheat and Electric Reheat - Duct Pressure Switch
Unit operation is initiated by the duct pressure switch signal to the controller. When signal to start by the duct
pressure switch, the unit fan is started and ran continuously. An analog signal from the zone sensor is used to
compare the difference in the zone temperature and the zone setpoint. On a rise in zone temperature above setpoint,
the controller outputs a 24-VAC signal, compensated for changing duct pressures, to open the air valve and to
increase primary cooling airflow. Upon a decrease in zone temperature, the opposite action occurs. Minimum and
maximum primary airflow settings are maintained by the controller and are adjustable through potentiometers on the
controller board. Upon a continued decrease in zone temperature, below setpoint, the reheat is enabled. For VSCF
and LSCF units with remote hot water reheat and VSWF and LSWF units, the hot water valve is opened. For VSCF
and LSCF units with remote electric reheat and VSEF and LSEF units, the electric stages are energized.
Water Valve
Electric Heater
J10
J7
On-Off
Normally Closed
24 VAC, 60 HZ
12 VA Max
J11
J10
J7
2nd Stage
1st Stage
Hot
Contactor(s)
24 VAC, 12 VA
Max/Coil
Transformer
50 VA
24 VAC 60 HZ
NEC Class - 2
Control Circuit
Board = 8 VA
Min Load = 12 VA
Fan Control
3
2
1
Zone Sensor
Remote Mtd.
Fan - BR
R-Fan
BR
BL
Y
J7
J7
TB1-1
TB1-2
TB1-3
TB1-4
TB1-5
J11 J10 J9
R68 R69 R67 R8 TP1
J19
J18
J1
J3
BL-HOT
BK-OPEN
R-CLOSE
G
BK
R
M
Air Valve
Actuator
4VA
NO
C
NC
DUCT PRESSURE
SWITCH
4.
J15
Pressure
Transducer
Notes:
1.
FACTORY INSTALLED.
OPTIONAL OR INSTALLED BY OTHERS.
2. No slaving of multiple units to a single zone sensor is allowed.
3. Field connections are TB1-3, TB1-4, TB1-5, J7, J10, and J11.
4. Rating: 15 amps 125/250/277 VAC resistive, 1/4 HP 125 VAC, 1/2 HP 250 VAC.
VAV-PRC008-EN C 45

Controls—
Analog
Accessories
Analog Electronic Controller
Trane Actuator – 90-Second Drive Time
The Trane analog electronic controller
offers basic VAV unit operation when
used in conjunction with a Trane
analog zone sensor. The control was
designed specifically for use with the
VariTrane air valve. Staged electric
reheat or on/off hot water reheat
control are provided when required.
The control board operates using 24-
VAC power. The controls operate in a
pressure independent fashion.
SPECIFICATIONS
Supply Voltage:
24VAC, 50/60 Hz
Maximum VA Load:
No Heat or Fan:
8 VA (Board, Transducer, Zone Sensor
and Actuator)
Note: If using field-installed heat, 24-VAC
transformer should be sized for
additional load
Output Ratings:
Air Valve Output: 24 VAC at 12 VA
1st Stage Reheat: 24 VAC at 12 VA
2nd Stage Reheat: 24 VAC at 12 VA
3rd Stage3 Reheat: 24 VAC at 12 VA
Operating Environment:
32 to 140°F (0 to 60°C)
5% to 95%RH, Non-Condensing
Storage Environment:
-40 to 180°F (-40 to 82°C)
5% to 95%RH, Non-Condensing)
Physical Dimensions:
Width:
2.26" (57.4 mm)
Length:
5.50" (139.7 mm)
Height:
2" (50.8 mm)
Connections:
¼" (6.35 mm) Stab Connections
Heat/Fan Staging:
(J9) Fan/1st Stage: 1.5° Below Setpoint
(J10) 2nd Stage: 2.5° Below Setpoint
(J11) 3rd Stage: 3.5° Below Setpoint
The actuator is a 3-wire, floating point
control device. It is a direct-coupled
over shaft (minimum shaft length of
2.1\-”), enabling it to be mounted
directly to the damper shaft without
the need for connecting linkage. The
actuator has an external manual gear
release to allow manual positioning of
the damper when the actuator is not
powered. The actuator is Underwriters
Laboratories Standard 873 and
Canadian Standards Association Class
3221 02 certified as meeting correct
safety requirements and recognized
industry standards.
SPECIFICATIONS
Actuator design:
3-wire, 18-gage, 24-VAC, floating-point
control. Non-spring return.
Actuator housing:
Housing type-NEMA 1, IP30
Rotation range:
Adjustable from 30 to 90°, clockwise or
counterclockwise
Electrical rating:
Power Supply – 24 VAC (20 to 30 VAC)
at 50/60 Hz
Power Consumption – 3.4 VA
maximum, Class 2
Electrical connection:
6-pin female connector for UCM
Manual override:
External clutch release lever
Shaft requirement:
½" (12.7 mm) round
2.1" (53.5 mm) length
Humidity:
90% RH max., Non-Condensing
Temperature rating:
Ambient operating – 32 to 125°F (0 to
52°C)
Shipping and storage – -20 to 150°F
(-29 to 66°C)
Torque:
Running: 35 in.-lb (4 N-m)
Breakaway: 35 in.-lb (4 N-m) minimum
Stall: 40 in.-lb (4.5 N-m) minimum
C 46
VAV-PRC008-EN

Controls—
Analog
Accessories
Analog Electronic Sensor
Static Pressure Controller
The analog electronic thermostat is
used in conjunction with the Trane
analog electronic controller to sense
the space temperature and to allow for
user adjustment of the zone setpoint.
Models with internal and external zone
setpoint adjustments are available.
SPECIFICATIONS
Thermistor Resistance Rating:
3000 Ohms at 77°F (25°C)
Setpoint Resistance Rating:
Setpoint potentiometer is calibrated to
produce 3070 Ohms at a setting of
70°F (21.11°C)
Electrical Connections:
Terminal Block - Pressure Connections
Physical Dimensions:
Width:
2.75" (69.85 mm)
Length:
4.5" (114.3 mm)
Height:
1.0" (25.4 mm)
The Trane static pressure controller will
sense duct static pressure and
modulate a relief device in an effort to
limit maximum duct static pressure. An
analog signal from the air probe is
used to compare the difference in the
duct static pressure and the duct static
pressure setpoint. The relief device can
be a VariTrane terminal or any blade
damper device with the specifications
stated below. See VAV-EB-64 for
installation and calibration.
PHYSICAL DIMENSIONS:
24VAC 60 HZ
NEC CLASS - 2
CONTROL CIRCUIT
- +
SPECIFICATIONS
Supply Voltage:
24 VAC, 60 HZ
Maximum VA Load:
No more than 12 VA
Recommended Wire Size:
14 – 22 AWG Stranded
Housing Material:
ABS
Components:
Control box
Pressure sensor
Interconnecting wire
Static pressure tap
Fits standard 2" deep x 4" x 2 1/8" utility
box.
PRESSURE
TRANSDUCER
2 5/8"
PRESSURE
CONTROLLER
-
V OUT
+
+
G
BK
R
HI
PORT
3
-
N
U
L
S
T
P
C
L
O
S
O
P
E
C
O
M
3 3/4"
3 1/4"
AIR PROBE
OR
HIGH PORT OF FLOW RING IF
USED WITH VARITRANE VCCF.
R
BK BL
3/16" Ø
MTG. HOLES (2)
AIR VALVE
ACTUATOR
VAV-PRC008-EN C 47
M

Controls—
Pneumatic
Options
Single-Duct Terminal Unit (VCCF, VCWF, and VCEF)
Unit Heat Control Description Thermostat Page #
PN00 Cooling Only With Normally-Open Damper, Actuator Only R.A. C 52
PN04 Cooling Only With Remote Hot Water Reheat, Normally-Open Damper, 3011 PVR D.A. C 52
Cooling Only PN05 Cooling Only With Remote Electric Reheat, Normally-Open Damper, 3011 P VR R.A. C 50
(VCCF) PN11 Cooling Only With Remote Hot Water Reheat, Normally-Open Damper, 3011 PVR - Auto Dual Minimum D.A. C 50
PN32 Cooling Only With Remote Hot Water Reheat, Normally-Open Damper, 3011 PVR - Constant Volume D.A. C 51
PC00 Cooling Only With Normally-Closed Damper, Actuator Only D.A. C 49
PC04 Cooling Only With Remote Hot Water Reheat, Normally-Closed Damper, 3011 PVR D.A. C 49
PC05 Cooling Only With Remote Electric Reheat, Normally-Closed Damper, 3011 PVR R.A. C 53
Hot Water PN04 Cooling With Hot Water Reheat, Normally-Open Damper, 3011 PVR, N.O. Hot Water Valve D.A. C 52
(VCWF) PN32 Cooling With Hot Water Reheat, Normally-Open Damper, 3011 PVR, N.O. Hot Water Valve - Constant Volume D.A. C 51
Electric PN05 Cooling With Electric Reheat, Normally-Open Damper, 3011 PVR R.A. C 50
(VCEF) PN34 Cooling With Electric Reheat, Normally-Open Damper, 3011 PVR - Constant Volume R.A. C 51
Dual-Duct Terminal Unit (VDDF)
Unit Heat Control Description Thermostat Page #
PN08 Cooling and Heating, Normally-Open Heating and Cooling Dampers, Actuators Only R.A. C 54
None PN09 Cooling and Heating, Normally-Open Heating and Cooling Dampers, 3011 PVRs D.A. C 54
(VDDF) PN10 Cooling and Heating, Normally-Open Heating and Cooling Dampers, 3501 PVRs - Constant Volume D.A. C 55
PC03 Cooling and Heating, Normaly-Closed Heating and Normally-Open Cooling Dampers, 3011 PVRs D.A. C 55
Fan-Powered Terminal Units (VPCF, VPWF, VPEF, VSCF, VSWF, and VSEF
Low-Height Fan-Powered Terminal Units (LPCF, LPWF, LPEF, LSCF, LSWF, and LSEF)
Unit Heat Control Description Thermostat Page #
Cooling Only
Hot Water PN00 Cooling With Reheat, Normally-Open Damper, Actuator Only R.A. C 56–58
Electric PN05 Cooling With Reheat, Normally-Open Damper, 3011 PVR R.A. C 56–58
(VPxF, LPxF)
Cooling Only PN00 Cooling With Reheat, Normally-Open Damper, Actuator Only R.A. C 56–58
Hot Water PN51 Cooling With Reheat, Normally-Open Damper, 3011 PVR - Duct Pressure Switch R.A. C 59–60
Electric PN52 Cooling With Reheat, Normally-Open Damper, 3011 PVR - Dual Pressure Main R.A. C 60–61
(VSxF, LSxF)
R.A. = Reverse Acting Thermostat
D.A. = Direct Acting Thermostat
C 48
VAV-PRC008-EN

Controls—
Pneumatic
Control
Drawings
PC00 – VCCF - Single-Duct Terminal Units
(Normal Operation: Cooling Only)
Normally-Closed Damper and Actuator (Direct-Acting Thermostat)
With an increase in room temperature, the thermostat output pressure is increased and the actuator opens to increase primary
cooling airflow to the space. With a decrease in room temperature, the opposite action occurs.
S
20
(137.9)
Actuator
Two Pipe
Remote Mounted
T-Stat
(Direct Acting)
100
% Position (Open)
% Flow (CFM)
S
20
(137.9)
100
Max
CFM
M
T-Stat Branch Pressure (kPa)
20.7
T-Stat Branch Pressure (kPa)
20.7
Water valve
55.2
3 8
Volume
Regulator
55.2
Air Valve Position
T-Stat Branch Pressure (PSI)
T
69
89.6
89.6
13
103.4
Air Flow
100
3-8 PSI
(20.69 - 55.16 kPa)
Water
Valve
(N.O.)
100
Max
LPS
% Flow (LPS)
Tee
Customer Notes:
Restrictor
Tee
Two Pipe
Remote Mounted
T-Stat
(Direct Acting)
Remote Mounted
(Direct Acting)
Min
Min
CFM
LPS
Customer Notes:
1. Factory installed.
Optional or installed by others.
3 8 10 13 15
T-Stat Branch Pressure (PSI)
VAV-PRC008-EN C 49
1.
Restrictor
Tee
S
20
(137.9)
15
S
(103.4)
(137.9)
S
20
(137.9)
20
One Pipe
Remote Mounted
T-Stat
(Direct Acting)
Restricted Leg
One Pipe Inset
Factory installed.
Optional or installed by others.
PC04 – VCCF and VCWF - Single-Duct Terminal Units
(Normal Operation: Cooling with Hot Water Reheat)
Normally-Closed Damper, Actuator, and 3011 Pneumatic Volume Regulator
(Direct-Acting Thermostat)
% Position (Open)
With an increase in room temperature, the thermostat output pressure is increased. This signal is input for the volume regulator, which
also receives inputs from the high- and low-pressure sides of the flow ring. The volume regulator outputs a signal compensated for
changing duct pressure to the valve actuator which opens the damper and increases primary cooling flow to the space. With a
decrease in room temperature, the opposite action occurs. Minimum and maximum primary airflow settings are maintained by the
volume regulator. When the system is designed with reheat, heating stages are energized at the appropriate pressure settings.
One Pipe
T-Stat
Restricted Leg
One Pipe Inset

Controls—
Pneumatic
Control
Drawings
PN05 – VCCF and VCEF - Single-Duct Terminal Units
(Normal Operation: Cooling with Electric Reheat)
Normally-Open Damper, Actuator, and 3011 Pneumatic Volume Regulator (Direct-Acting Thermostat)
With an increase in room temperature, the thermostat output pressure is decreased. This signal is input for the volume regulator, which also
receives the inputs from the high- and low-pressure sides of the flow ring. The volume regulator outputs a signal compensated for changing
duct pressure to the valve actuator which opens the damper and increases primary cooling flow to the space. With a decrease in room
temperature, the opposite action occurs. Minimum and maximum primary airflow settings are maintained by the volume regulator. When the
system is designed with reheat, heating stages are energized at the appropriate pressure settings.
T
Electric Heater
Terminal Box
S
15
(103.4) 20
(137.9)
M
Volume
Regulator
Tee
Two Pipe
Remote Mounted
T–Stat
(Reverse Acting)
S
20
(137.9)
T-Stat Branch Pressure (kPa)
% Flow (CFM)
Max
CFM
Min
CFM
3 8 10 13 15
T-Stat Branch Pressure (PSI)
Stages of Heat
PN11 – VCWF - Single-Duct Terminal Units
Max
LPS
Min
LPS
% Flow (LPS)
Restrictor
Tee
(Normal Operation: Cooling with Hot Water Reheat - Auto Dual Minimum)
Normally-Open Damper, Actuator, and 3011 Pneumatic Volume Regulator (Direct-Acting Thermostat)
With a decrease in room temperature, the thermostat output pressure is decreased. This signal is input to the volume regulator, which also
receives inputs from the high- and low-pressure sides of the flow ring. The volume regulator outputs a signal compensated for changing duct
pressure to the valve actuator, which closes the damper and decreases primary cooling flow to the space. With a further decrease in room
temperature, the auxiliary limit will override the thermostat signal, which is followed by the reheat being energized. Once the reheat has been
energized, the volume regulator will send a signal to the actuator to open to its secondary minimum. With an increase in temperature, the
opposite action occurs. Minimum and maximum airflow settings are maintained by the volume regulator. Heating stages are energized at the
appropriate pressure settings.
S
20
(137.9)
One Pipe
Remote Mounted
T–Stat
(Reverse Acting)
Restricted Leg
One Pipe Inset
Customer Notes:
1. Factory installed.
Optional or installed by others.
M
S
20
(137.9)
Volume
Regulator
T-Stat Branch Pressure (kPa)
T
Diverting
Relay
C NO
S NC
Tee
S
20
(137.9)
Restrictor
Tee
Restricted Leg
S
15
(103.4) 20
(137.9)
Bleed
Two Pipe
Remote Mounted
T–Stat
(Direct Acting)
Capped
Ports
Minimum
Limiter
C 50
% Flow (CFM)
100
Max
CFM
Min
CFM
3 8 10 13 15
T-Stat Branch Pressure (PSI)
100
Max
LPS
Min
LPS
% Flow (LPS)
Water
Valve
(N.O.)
3-8 PSI
(20.69 - 55.16 kPa)
Restrictor
Tee
S
20
(137.9)
One Pipe
Remote Mounted
T–Stat
(Direct Acting)
Restricted Leg
One Pipe Inset
Customer Notes:
1. Factory installed.
Optional or installed by others.
VAV-PRC008-EN

Controls—
Pneumatic
Control
Drawings
PN32 – VCWF - Single-Duct Terminal Units
(Normal Operation: Cooling with Hot Water Reheat - Constant Volume)
Normally-Open Damper, Actuator, and 3011 Pneumatic Volume Regulator (Direct-Acting Thermostat)
The unit shall operate to a constant volume flow regardless of changes in space temperature. The volume regulator receives the inputs from
high- and low-pressure sides of the flow ring. The volume regulator outputs a signal compensated for changing duct pressure to maintain
constant volume flow. When reheat is applied, heating stages are energized at the appropriate settings.
S
T
15
(103.4)
20
(137.9)
% Flow (CFM)
100
Constant
Volume
M
S
20
(137.9)
Volume
Regulator
T-Stat Branch Pressure (kPa)
20.7
Water Valve
55.2
69
89.6
Air Flow
Constant Volume
3 8 10 13
T-Stat Branch Pressure (PSI)
103.4
15
3-8 PSI
(20.69 - 55.16 kPa)
100
% Flow (LPS)
Water
Valve
(N.O.)
PN34 – VCEF - Single-Duct Terminal Units
Restrictor
Tee
Two Pipe
Remote Mounted
T-Stat
(Direct Acting)
Remote Mounted
(Direct Acting)
Restricted Leg
One Pipe Inset
Customer Notes:
1.
Factory installed.
Optional or installed by others.
(Normal Operation: Cooling with Electric Reheat - Constant Volume)
Normally-Open Damper, Actuator, and 3011 Pneumatic Volume Regulator (Reverse-Acting Thermostat)
The unit shall operate to a constant volume flow regardless of changes in space temperature. The volume regulator receives the inputs from
high- and low-pressure sides of the flow ring. The volume regulator outputs a signal compensated for changing duct pressure to maintain
constant volume flow. When reheat is applied, heating stages are energized at the appropriate settings.
S
20
(137.9)
One Pipe
T-Stat
T-Stat Branch Pressure (kPa)
One Pipe
Remote Mounted
T-Stat
(Reverse Acting)
100
100
Restricted Leg
Constant Volume
3rd
S
20
Air Valve 2nd
(137.9)
One Pipe Inset
Constant
Volume
1st
Customer Notes:
1.
Factory installed.
3 8 10 13 15
Stages of Heat
Optional or installed by others.
T-Stat Branch Pressure (PSI)
VAV-PRC008-EN C 51
% Flow (CFM)
M
S
20
(137.9)
20.7
Volume
Regulator
55.2
T
69
89.6
103.4
Electric Heater
Terminal Box
% Flow (LPS)
15
S
20
(103.4)
(137.9)
Two Pipe
Remote Mounted
T-Stat
(Reverse Acting)
Restrictor
Tee

Controls—
Pneumatic
Control
Drawings
PN00 – VCCF - Single-Duct Terminal Units
(Normal Operation: Cooling Only)
Normally-Open Damper and Actuator (Reverse-Acting Thermostat)
With an increase in room temperature, the thermostat output pressure is decreased and the actuator opens to increase primary cooling
airflow to the space. With a decrease in room temperature, the opposite action occurs.
S
20
(137.9)
Actuator
Two Pipe
Remote Mounted
T-Stat
(Reverse Acting)
T-Stat Branch Pressure (kPa)
20.7
55.2
100
% Position (Open)
M
Air Valve
3 8
T-Stat Branch Pressure (PSI)
Volume
Regulator
T
100
% Position (Open)
With an increase in room temperature, the thermostat output pressure is increased. This signal is input for the volume regulator, which also
receives inputs from the high- and low-pressure sides of the flow ring. The volume regulator outputs a signal compensated for changing duct
pressure to the valve actuator, which opens the damper and increases primary cooling flow to the space. With a decrease in room temperature,
the opposite action occurs. Minimum and maximum primary airflow settings are maintained by the volume regulator. When the system is
designed with reheat, heating stages are energized at the appropriate pressure settings.
3-8 PSI
(20.69 - 55.16 kPa)
Water
Valve
(N.O.)
Tee
Restrictor
Tee
PN04 – VCCF and VCWF - Single-Duct Terminal Units
(Normal Operation: Cooling with Hot Water Reheat)
Normally-Open Damper, Actuator, and 3011 Pneumatic Volume Regulator (Direct-Acting Thermostat)
15
S
S
20
(137.9)
20 (103.4)
(137.9)
One Pipe
Remote Mounted
T-Stat
(Reverse Acting)
Restricted Leg
One Pipe Inset
Customer Notes:
1.
Factory installed.
Optional or installed by others.
Two Pipe
Remote Mounted
T-Stat
(Direct Acting)
C 52
% Flow (CFM)
S
20
(137.9)
100
Max
CFM
Min
CFM
T-Stat Branch Pressure (kPa)
20.7
55.2
69
89.6
103.4
Water Valve
Air Flow
3 8 10 13 15
T-Stat Branch Pressure (PSI)
100
Max
LPS
Min
LPS
% Flow (LPS)
Restrictor
Tee
S
20
(137.9)
Customer Notes:
One Pipe
Remote Mounted
T-Stat
(Direct Acting)
Restricted Leg
One Pipe Inset
1. Factory installed.
Optional or installed by others.
VAV-PRC008-EN

Controls—
Pneumatic
Control
Drawings
PC05 – VCCF and VCEF - Single-Duct Terminal Units
(Normal Operation: Cooling with Electric Reheat)
Normally-Closed Damper, Actuator, and 3011 Pneumatic Volume Regulator (Reverse-Acting Thermostat)
With an increase in room temperature, the thermostat output pressure is decreased. This signal is input for the volume regulator, which also receives
the inputs from the high- and low-pressure sides of the flow ring. The volume regulator outputs a signal compensated for changing duct pressure to
the valve actuator which opens the damper and increases primary cooling flow to the space. With a decrease in room temperature, the opposite
action occurs. Minimum and maximum primary airflow settings are maintained by the volume regulator. When the system is designed with reheat,
heating stages are energized at the appropriate pressure settings.
T
Electric Heater
Terminal Box
15
S
20
(103.4)
(137.9)
M
Volume
Regulator
Tee
Two Pipe
Remote Mounted
T-Stat
(Reverse Acting)
S
20
(137.9)
% Flow (CFM)
100
Max
CFM
Min
CFM
T-Stat Branch Pressure (kPa)
20.7
55.2
69
89.6
103.4
Air Flow
3rd
2nd
1st
3 8 10 13 15
T-Stat Branch Pressure (PSI)
100
Max
LPS
Min
LPS
% Flow (LPS)
Stages of Heat
Customer Notes:
1.
Restrictor
Tee
S
20
(137.9)
One Pipe
Remote Mounted
T-Stat
(Reverse Acting)
Restricted Leg
One Pipe Inset
Factory installed.
Optional or installed by others.
VAV-PRC008-EN C 53

Controls—
Pneumatic
Control
Drawings
PN08 – VDDF - Dual-Duct Terminal Units
(Normal Operation: Cooling and Heating)
Normally-Open Heating Damper with Actuator and Normally-Open Cooling Damper with Actuator
(Reverse-Acting Thermostat)
With an increase in room temperature, the thermostat pressure is decreased. The cooling valve actuator opens the damper to
increase primary cooling flow to the space, the heating valve is closed. With a decrease in room temperature, the heating valve
modulates and the cooling valve is closed.
S
20
(137.9)
% Position (Open)
100
Actuator
T-Stat Branch Pressure (kPa)
20.7
Cooling
55.2
Heating
89.6
103.4
B M S
Reversing
Relay
8 PSI In
(55.16 kPa)
8 PSI Out
(55.16 kPa)
100
% Position (Open)
Tee
S
20
(137.9)
Restrictor
Tee
S
20
(137.9)
Actuator
Two Pipe
Remote Mounted
T-Stat
(Reverse Acting)
One Pipe
Remote Mounted
T-Stat
(Reverse Acting)
Restricted Leg
One Pipe Inset
3 8
13 15
T-Stat Branch Pressure (PSI)
Customer Notes:
1. Factory installed.
Optional or installed by others.
PN09 – VDDF - Dual-Duct Terminal Units
(Normal Operation: Cooling and Heating)
Normally-Open Heating Damper with Actuator, Normally-Open Cooling Damper with Actuator, and
3001 Pneumatic Volume Regulator (Qty of 2) (Direct-Acting Thermostat)
With an increase in room temperature, the thermostat output pressure is decreased. This signal is input to the volume regulator,
which also receives the inputs from the high- and low-pressure from the flow ring. The volume regulator outputs a signal
compensated for changing duct pressures to the valve actuator, which opens the damper and increases primary cooling flow to the
space. With a decrease in room temperature, the opposite action occurs. Minimum and maximum primary airflow settings are
maintained by the volume regulator. If the zone temperature continues to decrease after the fan has been energized, heating stages
are energized at the appropriate pressure settings.
HI
LO
Flow Ring
Heating
B
M
Volume
Regulator
HI
H L T LO
Flow Ring
Cooling
H
B
L
M
Volume
Regulator
T
% Flow (CFM)
100
Max
CFM
Min
CFM
Actuator
Heating
T-Stat Branch Pressure (kPa)
20.7
Heating
55.2
3 8
89.6
Cooling
13
S
20
(137.9)
103.4
15
T-Stat Branch Pressure (PSI)
100
Max
LPS
Min
LPS
% Flow (LPS)
S
20
(137.9)
Actuator
Cooling
Two Pipe
Remote Mounted
T-Stat
(Direct Acting)
S
20
(137.9)
Restrictor
Tee
S
20
(137.9)
One Pipe
Remote Mounted
T-Stat
(Direct Acting)
Restricted Leg
One Pipe Inset
Customer Notes:
1. Factory installed.
Optional or installed by others.
C 54
VAV-PRC008-EN

Controls—
Pneumatic
Control
Drawings
PN10 – VDDF - Dual-Duct Terminal Units
(Normal Operation: Cooling and Heating - Constant Volume)
Normally-Open Heating Damper with Actuator, Normally-Open Cooling Damper with Actuator, and
3501 Pneumatic Volume Regulator (Qty of 2) (Direct-Acting Thermostat)
With an increase in room temperature, the thermostat output pressure is increased. This signal is input to the volume regulators,
which also receives the inputs from the high- and low-pressure from the flow ring. The cooling volume regulator outputs a signal
compensated for changing duct pressure to the valve actuator, which opens the damper and increases primary cooling airflow to the
space. The heating valve is at a minimum flow. With a decrease in room temperature, the heating valve modulates in response to
signals from the heating pneumatic volume regulator, while maintaining constant volume at the discharge. The heating minimum
and maximum settings and the constant volume settings are maintained by the volume regulators.
HI
LO
Flow Ring
Heating
H L
Linear
Reset
B
Volume
M Regulator
T
HI
LO
Flow Ring
Cooling
in Discharge
H
L
Linear
Reset
B
Volume
M Regulator
T
% Flow (CFM)
100
Max
CFM
Min
CFM
Actuator
Heating
T-Stat Branch Pressure (kPa)
20.7
Heating
55.2
89.6
Cooling
S
20
(137.9)
103.4
3 8 13 15
T-Stat Branch Pressure (PSI)
100
Max
LPS
Min
LPS
% Flow (LPS)
S
20
(137.9)
Actuator
Cooling
Two Pipe
Remote Mounted
T-Stat
(Direct Acting)
Restrictor
Tee
One Pipe
Remote Mounted
T-Stat
(Direct Acting)
Restricted Leg
One Pipe Inset
Customer Notes:
1. Factory installed.
Optional or installed by others.
PC03 – VDDF - Dual-Duct Terminal Units
(Normal Operation: Cooling and Heating)
Normally-Closed Heating Damper with Actuator, Normally-pen Cooling Damper with Actuator, and
3011 Pneumatic Volume Regulator (Qty of 2) (Direct-Acting Thermostat)
With an increase in room temperature, the thermostat output pressure is increased. This signal is input to the volume regulators,
which also receives the inputs from the high- and low-pressure from the flow ring. The cooling volume regulator outputs a signal
compensated for changing duct pressure to the valve actuator, which opens the damper and increases primary cooling airflow to the
space. The heating valve is at a minimum flow. With a decrease in room temperature, the heating valve modulates in response to
signals from the heating pneumatic volume regulator. The heating valve is at a minimum flow. Both heating and cooling minimum
and maximum settings are maintained by the volume regulators.
S
20
(137.9)
S
20
(137.9)
HI
LO
Flow Ring
Heating
H L T
B
Volume
M Regulator
HI
LO
Flow Ring
Cooling
H L
T
B
Volume
M Regulator
Actuator
Heating
S
20
(137.9)
Actuator
Cooling
S
20
(137.9)
% Flow (CFM)
100
Max
CFM
T-Stat Branch Pressure (kPa)
20.7
Heating
55.2
Max
S
LPS
20
Restricted Leg
(137.9)
One Pipe Inset
Min
Min
CFM
LPS
Customer Notes:
3 8 13 15
1. Factory installed.
Optional or installed by others.
T-Stat Branch Pressure (PSI)
VAV-PRC008-EN C 55
Cooling
89.6
103.4
100
% Flow (LPS)
S
20
(137.9)
Two Pipe
Remote Mounted
T-Stat
(Direct Acting)
Restrictor
Tee
One Pipe
Remote Mounted
T-Stat
(Direct Acting)

Controls—
Pneumatic
Control
Drawings
PN00 – VPCF, LPCF, VSCF, LSCF - Fan-Powered Terminal Units
(Normal Operation: Cooling Only)
Normally-Open Damper and Actuator (Reverse-Acting Thermostat)
With an increase in room temperature, the thermostat output pressure is decreased and the actuator opens to
increase primary cooling airflow to the space. With a decrease in room temperature, the opposite action occurs
until the damper is fully closed. Upon a continued decrease in zone temperature below setpoint, the parallel fan
is energized.
S
15
(103.4)
20
(137.9)
Actuator
Tee
Two Pipe
Remote Mounted
T-Stat
(Reverse-Acting)
100
Position %
20.7
3
Actuator
Air Valve
T-Stat Pressure (kPa)
55.2
62.1
8 9
Fan On
T-Stat Pressure (PSI)
Electric Heater
Terminal Box
Tee
Tee
Fan
P.E.
Switch
(N.O.)
9 PSI
(62.06 kPa)
100
Position %
9 PSI
(62.06 kPa)
Fan P.E.
Switch
(N.O.)
15
S
20
(103.4)
(137.9)
Restrictor
Tee
Customer Notes:
1.
S
20
(137.9)
One Pipe
Remote Mounted
T-Stat
(Reverse-Acting)
Restricted Leg
One Pipe Inset
Factory installed.
Optional or installed by others.
PN00 – VPEF, LPEF, VSEF, LSEF - Fan-Powered Terminal Units
(Normal Operation: Cooling Only)
Normally-Open Damper and Actuator (Reverse-Acting Thermostat)
With an increase in room temperature, the thermostat output pressure is decreased and the actuator opens to increase
primary cooling airflow to the space. With a decrease in room temperature, the opposite action occurs until the damper
is fully closed. Upon a continued decrease in zone temperature below setpoint, the parallel fan is energized. If zone
temperature continues to decrease after the fan has been energized, heating stages are energized at the appropriate
pressure settings.
Two Pipe
Remote Mounted
T-Stat
(Reverse-Acting)
100
Position %
20.7
Air Valve
T-Stat Pressure (kPa)
55.2
62.1
69
Fan On
82.7
2nd
96.5
3rd
100
Position %
Restrictor
Tee
S
20
(137.9)
One Pipe
Remote Mounted
T-Stat
(Reverse-Acting)
Restricted Leg
One Pipe Inset
C 56
3
1st
8 9 10 12
T-Stat Pressure (PSI)
14
Stages of Heat
Customer Notes:
1. Factory installed.
Optional or installed by others.
VAV-PRC008-EN

Controls—
Pneumatic
Control
Drawings
PN00 – VPWF, LPWF, VSWF, LSWF - Fan-Powered Terminal Units
(Normal Operation: Cooling with Hot Water Reheat)
Normally-Open Damper, Actuator, and 3011 Pneumatic Volume Regulator (Reverse-Acting Thermostat)
With an increase in room temperature, the thermostat output pressure is decreased and the actuator opens to increase
primary cooling airflow to the space. With a decrease in room temperature, the opposite action occurs until the damper
is fully closed. Upon a continued decrease in zone temperature below setpoint, the parallel fan is energized. If the zone
temperature continues to decrease after the fan has been energized, heating stages are energized at the appropriate
pressure settings.
100
% Position (Open)
Actuator
20.7
T-Stat Branch Pressure (kPa)
Air Valve
55.2
62.1
69
Fan On
Water
89.6
Valve
103.4
3 8 9 10 13 15
T-Stat Branch Pressure (PSI)
Tee
100
3-8 PSI
(20.69 - 55.16 kPa)
Water
Valve
(N.O.)
9 PSI In
B
(62.06 kPa)
M Reversing
Relay 9 PSI Out
S
(62.06 kPa)
Fan
P.E.
Switch
(N.O.)
9 PSI
(62.06 kPa)
Restrictor
Tee
Two Pipe
Remote Mounted
T-Stat
(Reverse Acting)
(Reverse Acting)
Restricted Leg
One Pipe Inset
Customer Notes:
1.
Factory installed.
Optional or installed by others.
With an increase in room temperature, the thermostat output pressure is decreased. This signal is input to the volume
regulator, which also received the inputs from the high- and low-pressure from the flow ring. The volume regulator outputs
a signal compensated for changing duct pressures to the valve actuator, which opens the damper and increases primary
cooling flow to the space. With a decrease in room temperature, the opposite action occurs. Minimum and maximum
primary airflow settings are maintained by the volume regulator.
S
One Pipe
Remote Mounted
PN05 – VPCF, LPCF - Fan-Powered Terminal Units
S
20
(137.9)
% Position (Open)
Tee
(Normal Operation: Cooling Only)
Normally-Open Damper, Actuator, and 3011 Pneumatic Volume Regulator (Reverse-Acting Thermostat)
15
(103.4)
S
20
20
(137.9)
(137.9)
T-Stat
Tee
15
S
20
(103.4)
(137.9)
% Flow (CFM)
100
MAX
CFM
M
S
20
(137.9)
20.7
Volume
Regulator
T-Stat Branch Pressure (kPa)
Air Valve
T
55.2
62.1
Fan On
Fan
P.E.
Switch
(N.O.)
9 PSI
(62.06 kPa)
100
MAX
LPS
% Flow (LPS)
Restrictor
Tee
Two Pipe
Remote Mounted
T-Stat
(Reverse Acting)
One Pipe
Remote Mounted
T-Stat
(Reverse Acting)
Restricted Leg
One Pipe Inset
MIN
CFM
MIN
LPS
Customer Notes:
3
8 9
1. Factory installed.
Optional or installed by others.
T-Stat Branch Pressure (PSI)
VAV-PRC008-EN C 57
S
20
(137.9)

Controls—
Pneumatic
Control
Drawings
PN05 – VPWF, LPWF - Fan-Powered Terminal Units
(Normal Operation: Cooling with Hot Water Reheat)
Normally-Open Damper, Actuator, and 3011 Pneumatic Volume Regulator
(Reverse-Acting Thermostat)
With an increase in room temperature, the thermostat output pressure is decreased. This signal is input to the volume regulator, which
also receives the inputs from the high- and low-pressure from the flow ring. The volume regulator outputs a signal compensated for
changing duct pressures to the valve actuator, which opens the damper and increases primary cooling flow to the space. With a
decrease in room temperature, the opposite action occurs. Minimum and maximum primary airflow settings are maintained by the
volume regulator. If the zone temperature continues to decrease after the fan has been energized, heating stages are energized at
the appropriate pressure settings.
% Flow (CFM)
100
MAX
CFM
MIN
CFM
M
S
20
(137.9)
M
20.7
3
Volume
Regulator
T-Stat Branch Pressure (kPa)
Air Valve
55.2
62.1
8 9
T
69
Fan On
Water
Valve
89.6
10 13 15
T-Stat Branch Pressure (PSI)
Volume
Regulator
T
S
20
(137.9)
103.4
B
S
Tee
100
MAX
LPS
MIN
LPS
3-8 PSI
(20.69 - 55.16 kPa)
Reversing
Relay
M
Electric Heater
Terminal Box
Tee
Water
Valve
(N.O.)
9 PSI In
(62.06 kPa)
9 PSI Out
(62.06 kPa)
Tee
Fan
P.E.
Switch
(N.O.)
9 PSI
(62.06 kPa)
Restrictor
Tee
Two Pipe
Remote Mounted
T-Stat
(Reverse Acting)
One Pipe
Remote Mounted
T-Stat
(Reverse Acting)
Restricted Leg
PN05 – VPEF, LPEF - Fan-Powered Terminal Units
(Normal Operation: Cooling with Electric Reheat)
Normally-Open Damper, Actuator, and 3011 Pneumatic Volume Regulator
(Reverse-Acting Thermostat)
% Flow (CFM)
9 PSI
(62.06 kPa)
Fan P.E.
Switch
(N.O.)
15
20 (103.4)
(137.9)
One Pipe Inset
Customer Notes:
1. Factory installed.
Optional or installed by others.
With an increase in room temperature, the thermostat output pressure is decreased. This signal is input to the volume regulator, which
also receives the inputs from the high- and low-pressure from the flow ring. The volume regulator outputs a signal compensated for
changing duct pressures to the valve actuator, which opens the damper and increases primary cooling flow to the space. With a
decrease in room temperature, the opposite action occurs. Minimum and maximum primary airflow settings are maintained by the
volume regulator. If the zone temperature continues to decrease after the fan has been energized, heating stages are energized at
the appropriate pressure settings.
15
S
S
20
(103.4)
(137.9)
S
20
(137.9)
C 58
% Flow (CFM)
S
20
(137.9)
100
MAX
CFM
MIN
CFM
20.7
T-Stat Branch Pressure (kPa)
Air Valve
55.2
62.1
69
Fan On
82.7
1st
2nd
96.5
3 8 9 10 12 14
T-Stat Branch Pressure (PSI)
3rd
100
Tee
MAX
LPS
MIN
LPS
% Flow (LPS)
Stages of Heat
Restrictor
Tee
S
20
(137.9)
Two Pipe
Remote Mounted
T-Stat
(Reverse Acting)
One Pipe
Remote Mounted
T-Stat
(Reverse Acting)
Restricted Leg
One Pipe Inset
Customer Notes:
1.
Factory installed.
Optional or installed by others.
VAV-PRC008-EN

Controls—
Pneumatic
Control
Drawings
PN51 – VSCF, LSCF - Fan-Powered Terminal Units
(Normal Operation: Cooling Only - Duct Pressure Switch)
Normally-Open Damper, Actuator, and 3011 Pneumatic Volume Regulator (Reverse-Acting Thermostat)
This unit is energized by sensing inlet static pressure by the duct pressure switch. The unit fan runs continually during occupied operation.
With an increase in room temperature, the thermostat output pressure is decreased. This signal is input to the volume regulator, which
also receives the inputs from the high- and low-pressure from the flow ring. The volume regulator outputs a signal compensated for
changing duct pressures to the valve actuator which opens the damper and increases primary cooling flow to the space. With a
decrease in room temperature, the opposite action occurs. Minimum and maximum primary airflow settings are maintained by the
volume regulator.
T
15
S
20
(103.4)
(137.9)
M
Volume
Regulator
Two Pipe
Remote Mounted
T-Stat
(Reverse Acting)
% Flow (CFM)
100
MAX
CFM
MIN
CFM
S
20
(137.9)
20.7
T-Stat Branch Pressure (kPa)
Occupied
Fan On
Air Valve
55.2
62.1
3
8 9
T-Stat Branch Pressure (PSI)
100
MAX
LPS
MIN
LPS
Restrictor
Tee
S
20
(137.9)
PN51 – VSEF, LSEF - Fan-Powered Terminal Units
One Pipe
Remote Mounted
T-Stat
(Reverse Acting)
Restricted Leg
One Pipe Inset
Customer Notes:
1.
Factory installed.
Optional or installed by others.
(Normal Operation: Cooling with Electric Reheat - Duct Pressure Main)
Normally-Open Damper, Actuator, and 3011 Pneumatic Volume Regulator (Reverse-Acting Thermostat)
This unit is energized by sensing inlet static pressure by the duct pressure switch. The unit fan runs continually during occupied operation.
With an increase in room temperature, the thermostat output pressure is decreased. This signal is input to the volume regulator, which
also receives the inputs from the high- and low-pressure from the flow ring. The volume regulator outputs a signal compensated for
changing duct pressures to the valve actuator which opens the damper and increases primary cooling flow to the space. With a
decrease in room temperature, the opposite action occurs. Minimum and maximum primary airflow settings are maintained by the
volume regulator. If the zone temperature continures to decrease after the fan has been energized, heating stages are energized at the
appropriate pressure settings.
% Flow (LPS)
M
Volume
Regulator
T
Electric Heater
Terminal Box
Tee
15
S
20
(103.4)
(137.9)
Two Pipe
Remote Mounted
T-Stat
(Reverse Acting)
T-Stat Branch Pressure (kPa)
Restrictor
One Pipe
Tee
Remote Mounted
T-Stat
100
Occupied
(Reverse Acting)
Fan On
100
Restricted Leg
MAX
MAX
S
CFM
3rd
(137.9)
One Pipe Inset
LPS
20
2nd
MIN
MIN
CFM
1st
LPS
Customer Notes:
3
8 9 10 12 14
1. Factory installed.
Stages of Heat
T-Stat Branch Pressure (PSI)
Optional or installed by others.
VAV-PRC008-EN C 59
% Flow (CFM)
S
20
(137.9)
20.7
Air Valve
55.2
62.1
69
82.7
96.5
% Flow (LPS)

Controls—
Pneumatic
Control
Drawings
PN51 – VSWF, LSWF - Fan-Powered Terminal Units
(Normal Operation: Cooling with Hot Water Reheat - Duct Pressure Switch)
Normally-Open Damper, Actuator, and 3011 Pneumatic Volume Regulator
(Reverse-Acting Thermostat)
This unit is energized by sensing inlet static pressure by the duct pressure switch. The unit fan runs continually during occupied
operation. With an increase in room temperature the thermostat output pressure is decreased. This signal is input to the volume
regulator, which also receives the inputs from high- and low-pressure from the flow ring. The volume regulator outputs a signal
compensated for changing duct pressures to the valve actuator which opens the damper and increases primary cooling flow to
the space. With a decrease in room temperature, the opposite action occurs. Minimum and maximum primary airflow settings
are maintained by the volume regulator. If the zone temperature continues to decrease after the fan has been energized, heating
stages are energized at the appropriate pressure settings.
% Flow (CFM)
100
MAX
CFM
MIN
CFM
M
S
20
(137.9)
20.7
3
T-Stat Branch Pressure (kPa)
Occupied
Fan On
Air Valve
Volume
Regulator
55.2
62.1
69
Water
Valve
89.6
103.4
8 9 10 13 15
T-Stat Branch Pressure (PSI)
T
B
M Reversing
Relay
S
Tee
100
MAX
LPS
MIN
LPS
% Flow (LPS)
Water
Valve
(N.O.)
9 PSI In
(62.06 kPa)
9 PSI Out
(62.06 kPa)
3-8 PSI
(20.69 - 55.16 kPa)
Restrictor
Tee
Two Pipe
Remote Mounted
T-Stat
(Reverse Acting)
One Pipe
Remote Mounted
T-Stat
(Reverse Acting)
Restricted Leg
One Pipe Inset
Customer Notes:
1. Factory installed.
Optional or installed by others.
PN52 – VSEF, LSEF - Fan-Powered Terminal Units
(Normal Operation: Cooling with Electric Reheat - Duct Pressure Switch)
Normally-Open Damper, Actuator, and 3011 Pneumatic Regulator
(Reverse-Acting Thermostat)
The unit is energized into occupied status by a setting of main system air pressure to 15 psi (103 kpa). At unoccupied, the main
system air is set to 20 psi (138 kpa). The unit fan cycles on as 1st stage heat when called for by the unit t-stat. Dual setpoint
pneumatic thermostat is suggested for this option. With an increase in room temperature, the thermostat output pressure is
decreased. This signal is input to the volume regulator, which also receives the inputs from the high- and low-pressure from
the flow ring. The volume regulator outputs a signal compensated for changing duct pressures to the valve actuator, which
opens the damper and increases primary cooling flow to the space. With a decrease in room temperature, the opposite action
occurs. If the zone temperature continues to decrease after the fan has been energized, heating stages are energized at the
appropriate pressure settings.
15
S
20
(103.4)
(137.9)
9 PSI
(62.06 kPa)
15
S
S
20
(137.9)
20
(103.4)
(137.9)
C 60
% Flow (CFM)
Occupied
Fan On
100
MAX
CFM
MIN
CFM
15
M
S
20
(103.4)
(137.9)
20.7
T
Volume
Regulator
T-Stat Branch Pressure (kPa)
Air Valve
55.2
62.1
69
82.7
1st
2nd
96.5
3rd
3
8 9 10 12 14
T-Stat Branch Pressure (PSI)
Electric Heater
Terminal Box
Tee
Unoccupied
Fan On
100
MAX
LPS
MIN
LPS
% Flow (LPS)
Stages of Heat
Tee
15
Fan P.E.
Switch-1
(N.O.)
S
20
(103.4)
(137.9)
Fan P.E.
Swtich-2
(N.C.)
18 PSI
(124.11 kPa)
Restrictor
Tee
S
20
(137.9)
15
S
20
(103.4)
(137.9)
One Pipe
Remote Mounted
T-Stat
(Reverse Acting)
Restricted Leg
One Pipe Inset
Two Pipe
Remote Mounted
T-Stat
(Reverse Acting)
Customer Notes:
1.
Factory installed.
Optional or installed by others.
VAV-PRC008-EN

Controls—
Pneumatic
Control
Drawings
PN52 – VSCF, LSCF - Fan-Powered Terminal Units
(Normal Operation: Cooling with Electric Reheat - Dual Pressure Main)
Normally-Open Damper, Actuator, and 3011 Pneumatic Volume Regulator
(Reverse-Acting Thermostat)
The unit is energized into occupied status by a setting of main system air pressure to 15 psi (103 kpa). At unoccupied, the main
system air is set to 20 psi (138 kpa). The unit fan cycles on as 1st stage heat when called for by the unit's thermostat. Dual
setpoint pneumatic thermostat is suggested for this option. With an increase in room temperature, the thermostat output pressure
is decreased. This signal is input to the volume regulator, which also receives the inputs from the high- and low-pressure from the
flow ring. The volume regulator outputs a signal compensated for changing duct pressures to the valve actuator which opens the
damper and increases primary cooling flow to the space. With a decrease in room temperature, the opposite action occurs. Minimum
and maximum primary airflow settings are maintained by the volume regulator.
15
S
20
(103.4)
(137.9)
M
Volume
Regulator
T
Tee
Two Pipe
Remote Mounted
T-Stat
(Reverse Acting)
15
M
100
(103.4)
(137.9)
% Flow (CFM)
% Flow (CFM)
S
20
MAX
CFM
MIN
CFM
100
MAX
CFM
MIN
CFM
15
S
20
(103.4)
(137.9)
20.7
20.7
T-Stat Branch Pressure (kPa)
Occupied
Fan On
Air Valve
T
Volume
Regulator
55.2
62.1
Unoccupied
Fan On
3
8 9
T-Stat Branch Pressure (PSI)
Occupied
Fan On
T-Stat Branch Pressure (kPa)
Air Valve
55.2
62.1
69
89.6
Water
Valve
103.4
20
(103.4)
(137.9)
9 PSI
(62.06 kPa)
100
MAX
LPS
MIN
LPS
Tee
Fan
P.E.
Switch-1
(N.O.)
Unoccupied
Fan On
B
M Reversing
Relay
S
MAX
LPS
MIN
LPS
Fan
P.E.
Switch-1
(N.O.)
9 PSI
(62.06 kPa)
Fan P.E.
Swtich-2
(N.C.)
18 PSI
(124.11 kPa)
Restrictor
Tee
PN52 – VSWF, LSWF - Fan-Powered Terminal Units
15
S
% Flow (LPS)
% Flow (LPS)
Restricted Leg
Customer Notes:
1. Factory installed.
Optional or installed by others.
Customer Notes:
3 8 9 10 13 15
1.
Factory installed.
T-Stat Branch Pressure (PSI)
Optional or installed by others.
VAV-PRC008-EN C 61
Water
Valve
(N.O.)
9 PSI In
(62.06 kPa)
9 PSI Out
(62.06 kPa)
Tee
15
S
20
(103.4)
(137.9)
3-8 PSI
(20.69 - 55.16 kPa)
15
S
20
(103.4)
(137.9)
15
S
20
(103.4)
(137.9)
S
137.9
(20)
Fan P.E.
Swtich-2
(N.C.)
Restrictor
Tee
S
20
(137.9)
One Pipe
Remote Mounted
T-Stat
(Reverse Acting)
One Pipe Inset
(Normal Operation: Cooling with Electric Reheat - Dual Pressure Main)
Normally-Open Damper, Actuator, and 3011 Pneumatic Volume Regulator
(Reverse-Acting Thermostat)
The unit is energized into occupied status by a setting of main system air pressure to 15 psi (103 kpa). At unoccupied, the main
system air is set to 20 psi (138 kpa). The unit fan cycles on as 1st stage heat when called for by the unit's thermostat. Dual
setpoint pneumatic thermostat is suggested for this option. With an increase in room temperature, the thermostat output pressure
is decreased. This signal is input to the volume regulator, which also receives the inputs from the high- and low-pressure from the
flow ring. The volume regulator outputs a signal compensated for changing duct pressures to the valve actuator which opens the
damper and increases primary cooling flow to the space. With a decrease in room temperature, the opposite action occurs. If the
zone temperature continues to decrease after the fan has energized, heating stages are energized at the appropriate pressure settings.
Two Pipe
Remote Mounted
T-Stat
(Reverse Acting)
18 PSI
(124.11 kPa)
One Pipe
Remote Mounted
T-Stat
(Reverse Acting)
Restricted Leg
One Pipe Inset

Controls—
Pneumatic
Accessories
3011 Pneumatic Volume
Regulator
3501 Pneumatic Volume
Regulator
The pneumatic volume regulator (PVR)
is a controller that provides a consistent
airflow to the space, regardless of
varying inlet duct pressure conditions, in
response to a pneumatic thermostat
signal. The controller maintains
minimum and maximum airflow
setpoints. The 3011 PVR can be set to
control either normally open or
normally-closed air valve actuators and
can be calibrated to accept either directacting
or reverse-acting thermostat
signals. Fixed reset control of maximum
and minimum airflow setpoints is
provided.
SPECIFICATIONS
Differential Pressure Range:
0-1 in. wg (0–249 Pa)
Minimum Setpoint Range
0-1 in. wg (0–249 Pa)
Maximum Setpoint Range:
0.05 in. wg (12.5 Pa) above minimum to
1 in. wg (249 Pa) above minimum
Operating Static Pressure Range:
0.25 in. wg—6.0 in. wg (62.3–1494 Pa)
Reset Pressure Span:
Factory-set at 5 psig (34.5 kPa)
Field-adjustable from 0 to 10 psig
(0 to 68.9 kPa)
Reset Start Point:
Field-adjustable from 0 to 10 psig
(0 to 68.9 kPa)
Main Air Pressure:
15 to 30 psig (103 to 207 kPa)
Air Consumption:
28.8 scim (0.472 L/m) at 20 psig (138 kPa)
main air pressure
Operating Environment:
40 to 120ºF (4 to 49°C)
Storage Environment:
-40 to 140ºF (-40 to 60°C)
Output Sensitivity:
5 psig/0.02 in. wg (34.5 kPa/5.0 Pa)
Physical Dimensions:
Width:
4.5" (114.3 mm)
Length:
2.3" (58.4 mm)
Height:
3.87" (98.3 mm)
Weight: 11 oz (312 g)
Tubing Connections:
1/4" O.D. tubing connections
The 3501 PVR can be set to control either
normally open or normally-closed air
valve actuators and can be calibrated to
accept either direct-acting or reverseacting
thermostat signals. Fixed reset
control of maximum and minimum
airflow setpoints is provided. The
controller is used primarily in dual-duct
constant-volume applications because of
its linear output response characteristics.
The controller resets the primary air
velocity linearly with a change in
thermostat pressure. This is in contrast to
the 3011 PVR, which resets velocity
pressure with a change in thermostat
pressure. This allows the 3501 PVR to
have improved stability at low flows.
SPECIFICATIONS
Differential Pressure Range:
0–1.0 in. wg (0–249 Pa)
Minimum Setpoint Range:
0–1.0 in. wg (0–249 Pa)
Maximum Setpoint Range:
Minimum to 1.0 in. wg (249 Pa)
Operating Static Pressure Range:
0.25–6.0 in. wg (62.3–1494 Pa)
Reset Pressure Span:
Factory-set at 5 psig (34.5 kPa)
Field-adjustable from 0 to 7 psig
(0 to 48.3 kPa)
Reset Start Point:
Factory-set at 8 psig (55.2 kPa)
Field-adjustable from 0 to 10 psig
(0 to 68.9 kPa)
Main Air Pressure:
15–30 psig (103 to 207 kPa)
Air Consumption:
43.2 scim (0.708 L/m) at 20 psig (138 kPa)
main air pressure
Operating Environment:
40 to 120ºF (4 to 49°C)
Storage Environment:
-40 to 140ºF (-40 to 60°C)
Output Sensitivity:
5 psig/ 0.02 in. wg (34.5 kPa/ 5.0 Pa)
Physical Dimensions:
Width:
4.5" (114.3 mm)
Length:
3.87" (98.3 mm)
Height:
4.1" (104.1 mm)
Weight: 12 oz (340 g)
C 62
VAV-PRC008-EN

Controls—
Pneumatic
Accessories
Pneumatic Damper Actuator
Reversing Relay
Signal Limiter
The pneumatic actuator is designed for
use on VAV terminal units in HVAC
systems. The damper actuator mounts
to a standard ½" diameter shaft by a
pin and cross hold arrangement,
retaining clip, and non-rotation bracket.
Two model actuators are offered with
spring ranges of 3–8 psi or 8–13 psi.
SPECIFICATIONS
Effective Area:
8 sq inches (51.6 sq cm)
Normal Rotation:
100 degrees
Spring Ranges:
Model 3631–5000
Model 3631–8000
8-13 psi
(55.2–89.6 kPa)
3-8 psi
(20.7–55.2 kPa)
Supply Connection:
3/16" (4.8 mm) nipple for ¼" (6.4 mm)
O.D. tubing
Weight:
1.5 lbs (680 g)
Ambient Limits:
Operating:-20 to 120°F
(-28.889 to 48.889°C)
Shipping:-40 to 140°F (-40 to 60°C)
Tubing Connections:
1/4" O.D. tubing connections
The pneumatic reversing relay is a
proportional device that reverses the
action of the input signal. It is used to
change a direct-acting signal into a
reverse-acting signal or to change a
reverse-acting signal into a directacting
signal. This relay is used to
match the operating pressure range of
controlled devices (valves, pressure
switches, etc.) to the output pressure
range of a controller (such as a
thermostat). The output response will
always remain in 1:1 proportion to the
input signal, but the relay includes the
capability to bias the output signal.
SPECIFICATIONS
Factory Setting:
Contingent upon the selected
control option
Generally set for 8 psig in. = 8 psig out
or 9 psig in=9 psig out (55.2 kPa in. =
55.2 kPa out or 62.1 kPa in. =
62.1 kPa out)
Bias Adjustment:
+/- 15 psig (103 kPa)
Main Air Pressure:
15-30 psig (103–207 kPa)
Air Consumption:
18 scim (0.295 L/m) at 20 psig (138 kPa)
main air pressure
Operating Environment:
40 to 120ºF (4°C to 49°C)
Storage Environment:
-40 to 140ºF (-40 to 60°C)
Physical Dimensions:
Width:
1.5" (38.1 mm)
Length:
1.5" (38.1 mm)
Height:
2.5" (63.5 mm)
Tubing Connections:
3/16" (4.8 mm) nipples for 1/4"
(6.4 mm) polyethylene tubing
The pneumatic signal limiter is a
pressure limiting type device. The output
pressure from the signal limiter is not
allowed to rise above the signal limiter’s
setting. Adjustments to the output
pressure setting are made via a screw on
the back side of the valve.
SPECIFICATIONS
Factory Setting:
Maximum output = 8 psig (55.2 kPa)
Adjustable from 2–12 psig (13.8–82.7 kPa)
Main Air Pressure:
Nominal 20 psig (138 kPa) 22 psig
(152 kPa) maximum acceptable pressure
Air Consumption:
10 scim (0.164 L/m) at 20 psig (138 kPa)
main air pressure
Operating Environment:
50 to 120ºF (10 to 48.89°C)
Physical Dimensions:
Width:
1.1" (27.94 mm)
Length:
0.9" (22.86 mm)
Height:
0.9" (22.86 mm)
Tubing Connections:
9/100" (2.3 mm) nipples
VAV-PRC008-EN C 63

Controls
Specifications
For all VariTrane units, the unit
controller continuously monitors the
zone temperature and varies the
primary airflow as required to meet
zone setpoints. Airflow is limited by
adjustable minimum and maximum
setpoints.
Additionally, for series fan-powered
units, the controller will start and run the
fan continuously during the occupied
mode and intermittently during the
unoccupied mode. Upon a further call
for heat, any hot water or electric heat
associated with the unit is enabled.
For parallel fan-powered units, the
controller energizes the fan upon a call
for heat. Upon a further call for heat,
reheat is enabled.
FAN SPEED CONTROL
Variable Speed Control Switch
(SCR)—The SCR speed control device
is standard on all fan-powered units.
The SCR adjusts the fanspeed and
provides simplified system balancing.
DIRECT DIGITAL CONTROLS (DDC)
LonMark Direct Digital Controller—
Trane-designed LonMark certified
controller uses the space comfort
control (SCC) profile to exchange
information over a LonTalk Network.
LonMark networks provide the latest
open protocol technology
Direct Digital Controller—The
microprocessor-based terminal
unit controller provides accurate,
pressure-independent control through
the use of a proportional integral control
algorithm and direct digital control
technology. The UCM, monitors zone
temperature setpoints, zone
temperature, the rate of temperature
change, and valve airflow. With the
addition of optional sensors, room
occupancy or supply duct air
temperature can be monitored. The
controller is provided in an enclosure
with 7/8" (22 mm) knockouts for remote
control wiring. A Trane DDC zone sensor
is required.
DDC Actuator—Trane 3-wire, 18-
gage, 24-VAC, floating-point control
actuator with linkage release button.
Torque is 35 in.-lb minimum and is
non-spring return with a 90-second
drive time. Travel is terminated by end
stops at fully opened and closed
positions. An integral magnetic clutch
eliminates motor stall.
DDC Zone Sensor—The UCM
controller measures zone temperature
through a sensing element located in
the zone sensor. Other zone sensor
C 64
options may include an externallyadjustable
setpoint, communications
jack for use with a portable service tool,
and an override button to change the
individual controller from unoccupied to
occupied mode. The override button has
a cancel feature that will return the
system to unoccupied. Wired zone
sensors utilize a thermistor to vary the
voltage output in response to changes
in the zone temperature. Wiring to the
UCM controller must be 18 to 22 awg.
twisted pair wiring. The setpoint
adjustment range is 50–88ºF (10–31°C)
Depending upon the features available
in the model of sensor selected, the
zone sensor may require from a 2-wire
to a 7-wire connection. Wireless zone
sensors report the same zone
information as wired zone sensors, but
do so using radio transmitter
technology. No wiring from the zone
sensor to the UCM controller is
necessary.
Digital Display Zone Sensor with
Liquid Crystal Display (LCD)—
The direct digital zone sensor contains a
sensing element which sends a signal to
the UCM. A Liquid Crystal Display (LCD)
indicates setpoint, or space
temperature. Sensor buttons allow
setpoint adjust, and allow space
temperature readings to be turned on or
off. The digital display zone sensor also
includes a communication jack, for use
with a portable edit device, and an
override button to change the UCM
from unoccupied to occupied. The
override button has a cancel feature,
which returns the system to unoccupied
mode.
The digital display zone sensor requires
seven wires, one for 24-VAC power.
System Communications—The
Controller UCM sends and receives data
from a Tracer Summit or other Trane
Controller. Current unit status and
setpoints may be monitored and/or
edited via this data communication
feature. The network type is a twisted
wire pair shielded serial
communication.
The following direct digital control
features are available with VariTrane
terminal units:
• Controls Option – DD00: Trane actuator
for field-installed DDC controllers
• Controls Option – DD01: Cooling Only
(DDC/UCM)
• Controls Option – DD02: Cooling with
Normally-Closed On/Off hot water valve
(Normally-Open outputs) (DDC/UCM)
• Controls Option – DD03: Cooling with
proportional hot water valve with
optional spare On/Off Output)
(DDC/UCM)
• Controls Option – DD04: Cooling with
staged On/Off electric heat (DDC/UCM)
• Controls Option – DD05: Cooling with
pulse-width modulation electric heat
(DDC/UCM)
• Controls Option – DD07: Cooling with
Normally-Open On/Off hot water valve
(Normally-Closed outputs) (DDC/UCM)
• Controls Option – DD08: Cooling and
Heating - Dual-Duct Constant Volume
(DDC/UCM)
• Controls Option – FM00: Factory
installation of customer supplied
actuator and DDC controls. Controls
supplier is responsible for providing
factory-installation and wiring
instructions.
• Controls Option – FM01: Trane actuator
with factory installation of customer
supplied DDC controls. Controls supplier
is responsible for installing and wiring
instructions.
• Controls Option – ENON: Shaft only for
field-installation of customer-supplied
actuator and controls.
The following override commands may
be received by the Unit Control Module
(UCM) from the Tracer Summit or other
Trane Controllers.
• Control Mode – The UCM Control Mode
may be edited from occupied to
unoccupied to accommodate night
setback/setup.
• Control Action –The Control Action may
be edited from cooling to heating,
changing the primary air damper to a
heating source. This will accommodate
a cooling/heating changeover system.
• Control Offset – Enabling Control Offset
will increase the cooling temperature
setpoint and decrease the heating
temperature setpoint by a control-offset
value (Stored at limiting in the
occupied mode).
• Drive damper fully open
• Drive damper fully closed
• Drive damper to maximum airflow
setpoint
• Drive damper to minimum airflow
setpoint
• Disable unit heat
• Reset-Enabling the reset function forces
the controller and the flow sensor to
recalibrate
• Programmable hot water valve
drive time
• Programmable air damper drive time
VAV-PRC008-EN

Controls
Specifications
The following unit setpoints reside in • Cooling setpoint high limit.
to the VAV unit circuit board are made
the UCM in nonvolatile memory. These • Local heating flow setpoint enable/ using standard three-conductor
setpoints are editable from the Tracer disable and setpoint.
thermostat wire. The setpoint
via the communications link.
• Auxiliary analog input mode select for
adjustment range is 63–85ºF. (17–29°C)
• Occupied cooling temperature setpoint either auxiliary temperature sensor or
The sensor is available in two models.
(60–80ºF (15–26°C))
CO 2
detector.
One model has a concealed, internallyadjustable
setpoint. The other model
• Occupied heating temperature setpoint • Binary input mode select for either
(60–80ºF (15–26°C))
has an externally-adjustable setpoint.
generic or occupancy detector.
• Unoccupied cooling temperature
The following analog electronic control
In addition to the above setpoints, the
setpoint (60–100ºF (15–37°C))
features are available with VariTrane
following status information can be
terminal units:
• Unoccupied heating temperature
transmitted to the Tracer Summit or
setpoint (30–100ºF (15–37°C))
other Trane Controllers.
• Controls Option—EI05: Cooling with
remote or unit installed reheat
• Minimum cooling flow setpoint
• Active cooling temperature setpoint
(0, 10–110% of unit equivalent
• Controls Option—EI28: Cooling with
• Active heating temperature setpoint
nominal airflow)
remote or unit-installed reheat–Auto
• Current unit primary airflow
Dual Minimum
• Minimum heating flow setpoint
• Current zone temperature
(0, 10–110% of unit equivalent
• Controls Option—EI29: Cooling with
nominal airflow)
• Re-heat status (On/Off)
remote or unit-installed reheat–
• Maximum flow setpoint (0, 50–100% of • Auxiliary Air Temperature – Available Constant-Volume
unit equivalent nominal airflow)
only if the unit has an auxiliary
• Controls Option–EI71: Cooling with
temperature sensor.
remote or unit-installed reheat–Duct
• Fan Control Offset – This determines at
what operating point the fan in a • Failure Indicators – The UCM will
Pressure Switch
parallel fan-powered unit is energized. indicate the following:
• Controls Option—ENON: Shaft only for
This can be specified as a function of Temperature Sensor Failure
field-installation of actuator and DDC
temperature, degrees above heating Flow Sensor Failure
controls
setpoint, or primary airflow (0–10°F
Local Zone Sensor Setpoint Failure PNEUMATIC CONTROLS
(-17–12°C) or 0,10–100% of unit
• Ventilation Ratio
Normally-Open Actuator—
equivalent nominal airflow).
• Fan Status (on/off)
Pneumatic 3 to 8 psig (20 to 55 kPa)
• Heating Setpoint Offset – This
• Calibration Status (calibration/notcalibrating)
Normally-Closed Actuator—
spring-range pneumatic actuator.
determines at what point the first stage
of reheat turns on. Expressed in • BIP state
Pneumatic 8 to 13 psig (55 to 90 kPa)
degrees below cooling setpoint. (Only
• CO
applicable when local thumbwheel
2
Concentration—Available only if spring-range pneumatic actuator.
the unit has an auxiliary CO
is enabled.)
2
sensor. 3011 Pneumatic Volume Regulator
This mode and auxiliary air
(PVR)—The regulator is a thermostat
• Zone temperature, auxiliary
temperature are mutually exclusive. reset velocity controller, which
temperature, and zone setpoint
calibration corrections (adjustable from
ANALOG (Non-Communicating)
provides consistent air delivery within
5% of cataloged flow down to 15% of
+/-10.0ºF (+/- -12°C)).
Analog Controller—The controller unit cataloged cfm, independent of
• Flow measurement calibration
consists of a circuit board that offers changes in system static pressure.
correction (50–150%)
basic VAV unit operation and additional Factory-calibrated, field-adjustable
override functions and operates using
• Cooling Setpoint Low Limit – Applies
setpoints for minimum and maximum
24-VAC power. The controller uses a
low limit to programmed occupied
flows. Average total unit bleed rate,
capacitive type pressure transducer to
cooling setpoint or zone sensor cooling
excluding thermostat, is 28.8 scim at
maintain consistent air delivery
setpoint (30–100°F (-1–37°C)).
20 psig (7.87 ml/min at 138 kPa) supply.
regardless of system pressure changes
• Heating Setpoint High Limit – Applies
3501 Pneumatic Volume Regulator
in an enclosure with 7/8" (22 mm)
high limit to programmed occupied
(PVR) —The 3501 regulator is a linearreset
volume controller. This PVR is
knockouts for remote control wiring.
heating setpoint or zone sensor
A Trane electronic zone sensor is
heating setpoint (30–100ºF (-1–37°C)).
used to maintain a constant volume of
required.
• RTD / Thermistor – Determines what
airflow from the dual-duct unit when
Analog Actuator—A Trane 3-wire,
type of zone temperature sensor will
constant volume control is used.
18-gage, 24-VAC, floating-point control
be used.
Average total unit bleed rate, excluding
actuator with linkage release button. thermostat, is 43.2 scim at 20 psig
• Occupied and Unoccupied Outside Air Torque is 35 in.-lb minimum and is (11.8 mL/min at 138 kPa) supply.
Requirements – Determines the
non-spring return with a 90-second
percent of outdoor air required in the
Considerations for Pneumatic
drive time. Travel is terminated by end
zone for air quality requirements.
Thermostat—Field-supplied and
stops at fully-opened and -closed
-installed based on chosen control
• Series Fan Configuration – allows
positions. An integral magnetic clutch
options, a direct-acting or a reverseacting,
one-pipe or two-pipe
option of series fan-powered box to eliminates motor stall.
shut off fan and close air valve when Analog Thermostat—This singletemperature,
wall-mounted electronic control the available air valve, reheat
pneumatic room thermostat will
unit is unoccupied. Fan will operate in
unoccupied mode if reheat is active. device utilizes a thermistor to vary the and fan switch to maintain room
• Heating setpoint low limit.
voltage output in response to changes temperature setpoint.
in the zone temperature. Connections
VAV-PRC008-EN C 65

Controls
Specifications
The following pneumatic control
features are available with VariTrane
terminal units:
• Controls Option – PN00: Cooling with
Normally-Open damper and actuator
only (Reverse-Acting Thermostat)
• Controls Option – PN04: Cooling with
hot water reheat, Normally-Open
damper, 3011 PVR (Direct-Acting
Thermostat)
• Controls Option – PN05: Cooling with
electric reheat, Normally-Open
damper, 3011 PVR (Reverse-Acting
Thermostat)
• Controls Option – PN08: Cooling and
Heating, Normally-Open dampers,
actuators only (Reverse-Acting
Thermostat)
• Controls Option – PN09: Cooling and
Heating, Normally-Open dampers,
3011 PVR’s (Direct-Acting Thermostat)
• Controls Option – PN10: Cooling and
Heating, Normally-Open dampers,
3501 PVR’s, Dual-Duct Constant Volume
(Direct-Acting Thermostat)
• Controls Option – PN11: Cooling with
hot water reheat, Normally-Open
damper, 3011 PVR - Auto Dual
Minimum (Direct-Acting Thermostat)
(N.O. Water Valve)
• Controls Option – PN32: Cooling with
hot water reheat, Normally-Open
damper, 3011 PVR - Constant Volume
(Direct-Acting Thermostat)
• Controls Option – PN34: Cooling with
electric reheat, Normally-Open
damper, 3011 PVR - Constant Volume
(Reverse-Acting Thermostat)
• Controls Option – PN51: Cooling with
reheat, Normally-Open damper, 3011
PVR Duct Pressure Switch (Reverse-
Acting Thermostat)
• Controls Option – PN52: Cooling with
reheat, Normally-Open damper, 3011
PVR - Dual Pressure Minimum
(Reverse-Acting Thermostat)
• Controls Option – PC00: Cooling Only
with Normally-Closed damper - Direct-
Acting Thermostat
• Controls Option – PC03: Cooling and
Heating, Normally-Closed heating
damper, Normally-Open cooling
damper, actuators only - Direct-Acting
Thermostat
• Controls Option – PC04: Cooling with
hot water reheat, Normally-Closed
damper, 3011 PVR - Direct-Acting
Thermostat
• Controls Option – PC05: Cooling with
electric reheat, Normally-Closed
damper, 3011 PVR - Reverse-Acting
Thermostat
OPTIONS
Power Fuse (cooling only and hot
water units, and VDDF)—An optional
fuse is factory-installed in the primary
voltage hot leg.
Transformer (Standard on fanpowered,
optional on VCCF, VCWF,
VDDF)—The 50-VA transformer is
factory-wired and installed in an
enclosure with 7/8" (22 mm) knockouts
to provide 24 VAC for controls.
Wireless Zone Sensor/Receiver—
Factory mounted Receiver with field
mounted Sensor accessory elimintes
the need for the wiring between the
zone sensor and unit level controller.
See specifications on Page C67.
Disconnect Switch (Optional on
VCCF, VCWF, VDDF)—Disengages
power.
HOT WATER VALVES
Two-Position Valve—The valve is a
field-adaptable for 2-way or 3-way
piping arrangements. All connections
are National Pipe Thread (NPT). The
valve body is forged brass with a
stainless steel stem and spring. Upon
demand, the motor strokes the valve.
When the actuator drive stops, a spring
returns the valve to its fail-safe position.
Flow Capacity – 1.17 Cv,
Overall Diameter – ½" NPT
Close-Off Pressure – 30 psi (207kPa)
Flow Capacity – 3.0 Cv,
Overall Diameter – 3/4" NPT
Close-Off Pressure – 14.5 psi (100kPa)
Flow Capacity – 6.4 Cv
Overall Diameter – 1" NPT
Close Off Pressure – 9 psi (62kPa)
Maximum Operating Fluid
Temperature – 203 o F (95 o C)
Maximum System Pressure – 300 psi
(2067kPa)
Maximum Static Pressure – 300 psi
(2067kPa)
Electrical Rating – 7 VA at 24 VAC, 6.5
Watts, 50/60Hz
8 feet (2.44 m) of plenum rated wire
lead is provided with each valve.
Proportional Water Valve—The
valve is a field-adaptable for 2-way or
3-way piping arrangement. The valve is
designed with an equal percentage
plug. The intended fluid is water or
water and glycol (50% maximum
glycol). The actuator is a synchronous
motor drive. The valve is driven to a
predetermined position by the UCM
controller using a proportional plus
integral control algorithm. If power is
removed, the valve stays in its last
position. The actuator is rated for
plenum applications under UL 94-5V
and UL 873 standards.
Pressure and Temperature Ratings –
The valve is designed and tested in full
compliance with ANSI B16.15 Class
250 pressure/temperature ratings,
ANSI B16.104 Class IV control shutoff
leakage, and ISA S75.11 flow
characteristic standards.
Flow Capacity – 7.30 Cv, 4.60 Cv, 1.80
Cv, and 0.79 Cv
Overall Diameter – ½" NPT, ¾" NPT
(7.30 Cv)
Maximum Allowable Pressure – 345 psi
(2415 kPa)
Maximum Operating Fluid
Temperature – 281 o F (138 o C)
Maximum Close-Off Pressure – 55 psi
(379 kPa)
Electrical Rating – 4 VA at 24 VAC
10 feet (3.05 m) of plenum rated
22-gage wire for connection.
Terminations are #6 stabs.
DDC RETROFIT KIT (VRTO)
The kit consists of a Trane DDC Unit
Control Module (UCM) VAV terminal
unit controller and a pressure
transducer installed in a metal
enclosure. The mechanical
specifications of accessories such as
DDC zone sensors, hot water valves,
and transformers are found elsewhere
in this section.
C 66
VAV-PRC008-EN

Controls
Specifications
RETROFIT KIT OPTIONS
Flow Bar Sensor—The flow bar
sensor is a multiple-point, averaging,
pitot tube type flow sensor. It is
intended for field installation on
terminal units that have no flow
measurement device. The total and
static pressure outputs of the sensor
are field-piped to the high and low
inputs of the pressure transducer in the
retrofit kit.
Retrofit Kit Actuator—The electric
actuator is a direct-coupled type
actuator that utilizes three-wire,
floating-point control. The actuator is
field-installed to the damper shaft and
field-wired to the controller.
Trane Actuator – Actuator is rated at
4 VA at 24 VAC. Drive time is 90
seconds with 35 in.-lb (4 N-m).
Retrofit Actuator – Actuator is rated at
3 VA at 24 VAC. Drive time is 80 to 110
seconds for 0 to 35 in.-lb (0 to 4 N-m).
Other options available:
• DDC Zone Sensors
• 2-Position & Modulating Water Valves
• Control Transformer (Ships loose with
mounting plate for 4x4 junction box)
• Auxiliary Temperature Sensor
• Zone Occupancy Sensors
• Co2 Sensors (Room- or duct-mounted)
Wireless Zone Sensor Specifications
Sensor Operating Temperature
32 to 122°F (0 to 50°C)
Receiver Operating Temperature
-40 to 158°F (-4 to 70°C)
Storage Temperature
-40 to 185°F (-4 to 85°C)
Storage and Operating Humidity Range
5% to 95%, non-condensing
0.5°F over a range of 55 to 85°F (12.8 to
Accuracy
29.4°C)
±0.125°F over a range of 60 to 80°F
(15.56 to 26.67°C) ±0.25°F when outside
Resolution
this range
Setpoint Functional Range
-45 to 95°F (7.22 to 35°C)
50 to 85°F (stamped every 5°F) and *,**
Setpoint Thumbwheel Markings
11 to 29°C (stamped every 3°C) and *,**
Receiver Voltage 24V Nominal AC/DC ±10%
Receiver Power Consumption

Diffusers
Table of
Contents
Introduction
In today’s diverse building
environment, we are seeing an
expanding role of VAV applications
across many different market
segments. While this is happening,
it is necessary to make sure the VAV
systems and diffusers in particular
are applied, installed, and operated
correctly.
The purpose of this section of the
catalog is to show these issues that
need to be considered when selecting
and placing diffusers.
Introduction D 2 – 3
Linear Slot Diffusers (LINR) D 4 – 11
Adjustable Flow Diffusers (FAPF, VAPF, AABD, VAPS) D 12 – 21
Light Fixture Diffusers (LITE) D 22 – 26
Induction Diffusers (INDT, INDB, INCB, INSR) D 27 – 29
Perforated Diffusers (PERF) D 30 – 32
Mechanical Specifications D 33 – 34
DIFFUSER
PLENUM
(OPTIONAL)
CONTROL
UNIT
VAV-PRC008-EN D 1

Diffusers
Introduction
Diffusers
The VariTrane line of variable-airvolume
(VAV) products has been an
industry leader in performance and
quality for many years. While most
would associate the VariTrane name
with VAV terminal units, the diffuser
product line has grown significantly
over the years.
Room Air Distribution
When variable-flow cooling and
constant-flow heating are combined in
a zone, the zone air diffusers are
usually selected at partial cooling load
to ensure proper operation. Ceilingmounted
linear slot diffusers are
recommended since they perform well
over a wide range of velocities. Cool air
delivery takes advantage of the
“Coanda” effect, whereby cool air
discharged through a linear slot
diffuser hugs the ceiling before
descending, insuring proper operation
over a wide range of flows without
“dumping.” When delivering warm air
with constant flow velocities, or warm/
cool air with variable flow velocities,
the flow velocity must be high enough
to ensure that the air reaches the floor.
To prevent stratification, the warm air
temperature should not be more than
20°F (6.7°C) above the zone air
temperature.
in the VariTrane line,
an explanation of
each type, and a short
discussion of the
proper application for
each type.
Linear Slot Diffuser
(LINR)
Linear slot diffusers
are most commonly
used in VAV systems.
This type of diffuser has a fixed vane
inside, which means that the pattern is
not adjustable. The fixed vane allows a
wide range of flows through the
diffuser without causing drafts. Lower
flanges provide ceiling tile support as
an integral part of the diffuser housing.
Recommended Guidelines—Linear
Slot Diffusers
Diffuser Placement – The maximum
recommended distance between
diffusers is three diffuser lengths. For
example, if the diffuser length is 4 feet
(1.219 m), the maximum separation
distance would be 4 ft x 3 = 12ft
(1.219 m x 3 = 3.658 m).
The maximum recommended distance
for diffusers from an exterior wall, with
parallel flow to the wall is two diffuser
lengths. For example, if the diffuser
length is 4 feet (1.219 m), the
maximum distance from the exterior
wall would be 4 ft x 2 = 8 ft
(1.219 m x 2 = 2.438 m).
A simple rule for better air circulation is
to avoid placing supply air linear slot
diffusers that allow airflows to collide
at right angles.
General Guidelines – When
beginning the placement and layout of
diffusers, assume that each diffuser
delivers only 75% to 80% of its
SUPPLY
AIR DIFFUSERS
NEVER DO THIS!!
(PERPENDICULAR AIR FLOWS)
RETURN
AIR
DIFFUSER
nominal airflow. If you start by using
100% of the nominal airflow, you will
end up with high losses in
performance, acoustical problems, and
very little or no design flexibility.
A diffuser airflow rate is 50 cfm per
linear foot (77.4 L/s per linear meter) of
diffuser. Therefore, the recommended
flow to use when designing is 50 cfm/
linear ft x 0.8 = 40 cfm/linear ft (77.4 L/s/
linear m x 0.8 = 61.9 L/s/linear m).
The nominal airflow of a diffuser is
determined by multiplying the diffuser
length, the number of slots, and the
airflow per linear foot. Using the
airflow per linear foot calculated above,
a 4 foot, 2-slot, 2-way diffuser should
be designed to handle 4 linear ft x 2
slots x 40 cfm/linear ft = 320 cfm
(1.219 m x 2 slots x 61.9 L/s/linear m =
150.9 L/s).
To maximize the effectiveness of
ventilation with ceiling diffusers,
throws should be kept as long as
possible. For proper air circulation, try
to maintain at least a 20°F (6.7°C)
difference between the supply air and
room temperature. This provides for
optimum performance.
Collision Velocities –The collision
velocity is the speed at which moving
air meets a wall or another airflow
In addition to choosing the correct
diffuser type, the designer must
properly size and place each diffuser in
the zone to minimize noise and
pressure drop while maximizing the
throw and diffusion performance.
VariTrane Diffuser Types
The VariTrane line of diffusers contains
a variety of different models. The
following is a list of the diffuser types
D 2
VAV-PRC008-EN

Diffusers
Introduction
stream. For exterior walls, the collision
velocity should be between 100 and
150 feet per minute (FPM) (0.508 and
0.762 m/s). Do not exceed 150 FPM
(0.762 m/s) on an exterior wall. For
interior walls, the collision velocity
should be between 50 and 75 FPM
(0.254 and 0.381 m/s). Try not to exceed
75 FPM (0.381 m/s) for interior walls.
The maximum recommended collision
velocity between airflow streams
should not exceed 150 FPM (0.762
m/s). The collision velocity between
airflow streams is determined by the
addition of both velocities at the point
of collision. Avoid collision of air
velocities at right angles to each other
by trying to maintain parallel flow.
Following this guideline will allow one
to maximize the "Coanda" effect and
proper air diffusion in a zone.
Experience indicates that mixed air
after collision near the ceiling and
below 150 FPM will produce comfort in
the zone at the occupant's level.
INTERIOR WALL
150 FPM
MAX.
EXTERIOR WALL
75 FPM
MAX.
150 FPM
MAX.
Return Air Slots – Return air slots
are placed perpendicular to supply air
slots. This prevents supply air from
bypassing the space, and allows for
proper air circulation. With a
suspended ceiling, low operating static
pressure across the ceiling panels must
be maintained. Failure to do so will
cause the return air to be forced
around the edges of the ceiling panels.
When this happens, soiling of the
panels will occur and the mechanical
system can become choked for return
air. A space-to-plenum pressure drop
of 0.02 to 0.03 inches of water is
acceptable under most conditions.
RETURN
DIFFUSER
SLOT
PERPENDICULAR
SUPPLY
DIFFUSER
Fully Adjustable Pattern Flow (FAPF) –
The FAPF diffuser, a type of ceiling
diffuser outlet, should be used with layin
ceilings. The primary benefit of this
kind of diffuser is that it provides the
most flexibility of adjustment of the
airflow pattern. The FAPF diffuser
provides adjustable vanes for
horizontal or vertical throw. The dualvane
option allows each slot to be
adjusted for left, right, or vertical throw.
Besides pattern adjustments, the vanes
also provide airflow dampering. In
addition, the vanes are adjustable from
the face of the diffuser so changes to
the pattern can be made after the
diffuser is installed.
Vane Adjustable Pattern Flow (VAPF) –
The VAPF diffuser is very similar to the
FAPF ceiling outlet diffusers. The
primary difference is the design of the
pattern adjustment vane. The VAPF
diffuser should be used with lay-in
ceilings. The pattern is adjustable for
horizontal left, horizontal right, or
vertical throw. The pattern adjustment
vane contains a felt seal on the end to
reduce air leakage around the vane.
The vanes are adjustable from the face
of the diffuser, allowing the pattern to
be easily changed after installation.
Vane Adjustable Pattern Flow–
Special (VAPS) –
The VAPS diffuser is a special version
of the VAPF diffuser. The design of the
vane is slightly different from the VAPF
model, but the VAPS has the same
functionality. The VAPS has been
popular in certain regions of the
country.
Adjustable Air Bar Diffuser (AABD) –
The AABD diffuser is another lay-in
ceiling type of diffuser. The difference
between the AABD and the FAPF or the
VAPF is that the AABD has no
adjustment vane. A sliding air bar in
the outlet of the diffuser makes the
pattern adjustments. The pattern is
adjustable for horizontal left, horizontal
right, or vertical throw.
Light Fixture Diffuser (LITE) –
The LITE diffuser should be installed
on a suspended ceiling light fixture.
This type of diffuser is quite popular
with architects, because the number of
ceiling penetrations can be reduced.
The diffuser is available with an
integral sliding volume damper and
with or without pattern control vanes
(some light fixtures already contain
pattern control vanes). Both the
volume damper and the pattern
control vanes (if necessary) are
adjustable with a screwdriver from the
face of the diffuser without removing
the light fixture doorframe. The pattern
control vane allows for either
horizontal or vertical throw.
Induction Diffusers (INDT, INDB, INSR,
INCB)—
Induction diffuser discharges air in a
tight pattern along a ceiling. The
discharged air then induces the room
air into the air stream to effectively mix
the streams. Induction diffusers are
typically used in exterior zones that
have unusually high heat loads or
drafts. They are designed to be
installed in suspended ceilings and
have high induction horizontal airflow.
The center down blow option provides
a vertical air pattern for exterior walls
or glass. Induction diffusers have
adjustable blades for volume and
direction control.
INDT –This type of induction diffuser
contains a supply air outlet only. It will
project air along a ceiling and provide
mixing of the primary and room air
streams.
INDT –This type of induction diffuser
contains a standard supply air outlet
along with down blow outlet. The
down blow outlet will project a jet of
primary air in a vertical direction while
the standard outlet projects the
induction jet. The down blow jet is
often washed along an exterior glass
window or aimed to combat
something that is producing a draft in
the space.
INSR –This type of induction diffuser
contains a supply air outlet along with
a separate return air inlet integrated
into one device. This reduces the
number of ceiling penetrations
necessary.
INCB – This type of induction diffuser
contains a standard supply air outlet, a
down blow outlet, and a separate
return air inlet integrated into one
device.
Perforated Diffuser (PERF)
The PERF diffusers are designed for
use with lay-in ceilings and provide the
most economical option for air
diffusion. The pre-assembled diffuser is
made to lay in a 24" x 24"
(0.610 m x 0.610 m) ceiling opening
and is available with multiple round
inlet connection sizes. Outlets are
available with disc or adjustable
deflector. The air is projected in a
circular pattern from the diffuser.
VAV-PRC008-EN D 3

Diffusers—
Linear
Slot
Model
Number
Description
Linear Slot Diffusers
The features of the Linear Slot Diffuser
are described by the product
categories shown in bold. Within each
category the options available are
listed.
END BRACKET DETAIL
1S1W
1-SLOT
1-WAY
2S1W
2-SLOT
1-WAY
NOMINAL LENGTH – 1
LINR
INLET DIAMETERS ARE BASED
ON A COMBINATION OF CEILING
TYPE AND DIFFUSER LENGTH.
SEE CHART ON INLET AVAILABILITY.
2S2W
2-SLOT
2-WAY
DIFFUSER
HEIGHT H
1
9
4
7
12 16
14
LOW
MED
HIGH
3S1W
3-SLOT
1-WAY
NOTES:
1. FIXED VANE PROVIDES A DRAFTLESS AIR PATTERN OVER THE
FULL RANGE OF FLOW. EXCELLENT FOR VARIABLE VOLUME.
2. LOWER FLANGES PROVIDE TILE SUPPORT AS AN INTEGRAL PART
OF THE DIFFUSER HOUSING.
3. AVAILABLE IN NOMINAL LENGTHS OF 2', 2.5', 4', AND 5'.
4. MATERIAL: 24-GAGE GALVANNEALED STEEL.
5. ALL EXPOSED SURFACES HAVE WHITE ENAMEL FINISH.
6. ALL DIMENSIONS ARE IN INCHES.
INLET
DIAMETER
6"
8"
10"
3S1I
3-SLOT
2-WAY
INLET BALANCING DAMPER
(OPTIONAL)
MODEL DIFFUSER
NUMBER WIDTH W
13
1S1W 116
1
2S1W 3 16
1
2S2W 4 8
5
3S1W 4 16
3
3S2I 5 8
3
3S1I 5 8
5
4S2W 6 8
H
3S1I
3-SLOT
1-WAY
1SDR
1-SLOT
Direct Discharge
W
INTERNAL
INSULATION
TILE FLANGE DETAIL
4S2W
4-SLOT
2-WAY
2SDR
2-SLOT
Direct Discharge
MODL Model
VLSD Supply Diffuser
VLRD Return Slot
DSEQ Design Sequence
A A Design Sequence
TYPE Diffuser Type
LINR Linear Diffuser
LGTH Diffuser Length
2 Diffuser Length – 2'
2.5 Diffuser Length – 2 1/2'
4 Diffuser Length – 4'
5 Diffuser Length – 5'
HGTH Diffuser Height
LOW Low Height
MED Medium Height
HIGH High Height
NONE For Return Slots
WDTH Ceiling Tee Width
916 9/16" Ceiling Grid
1516 15/16" Ceiling Grid
SLOT Slot Configuration
1S1W 1-Slot, 1-Way
2S1W 2-Slot, 1-Way
3S1W 3-Slot, 1-Way
2S2W 2-Slot, 2-Way
4S2W 4-Slot, 2-Way
1SDR 1-Slot, Direct Discharge
3S1I 3-Slot, 2 Way, Inlet on 1-Slot Side
3S2I 3-Slot, 2 Way, Inlet on 2-Slot Side
2SDR 2-Slot, Direct Discharge
CEIL Ceiling Type
TBAR 15/16" T-Bar
2X2T 15/16" T-Bar with Center Notch
PLSR Plaster Ceiling
T916 9/16" Narrow Faced Grid
D916 9/16" Narrow Regressed Grid
2X2N 9/16" Center Notch, Narrow
Faced Grid
2X2D 9/16" Center Notch, Narrow
Regressed Grid
SPLN Concealed Spline
DMPR Damper Type
FIRE Fire Damper
BAL Balancing Damper
HNGR Hanger Holes
WITH Hanger Holes
D 4
VAV-PRC008-EN

Diffusers—
Linear
Slot
Ceiling
Cross
Reference
CEILING SYSTEM CROSS REFERENCE
(TYP. ALL)
1½
GRID TYPE
15/16"GRID
STANDARD T-BAR GRID
(T-BAR, 2x2T)
COMPANY/NAME OR MODEL
ARMSTRONG – PRELUDE SERIES
CHICAGO METALLIC – 200/1800 SERIES
USG/DONN – DX SERIES
15/16
1½
9/16" GRID
NARROW FACED GRID
(T916, 2x2N)
ARMSTRONG – SUPRAFINE
CHICAGO METALLIC – TEMPRA 4000
USG/DONN – CENTRICITEE
9/16
1½
REVEAL GRID
NARROW FACED GRID
(T916, 2x2N)
CHICAGO METALLIC – STYLINE 3700 (9/16")
USG/DONN – DX MERIDIAN (9/16")
9/16
1½
REVEAL GRID
NARROW FACED GRID
(T916, 2x2N)
CHICAGO METALLIC – STYLINE 3800 (3/4")
3/4
5/16
BOLT SLOT GRID
(FINELINE TYPE)
NARROW REGRESSED GRID
(D916, 2x2D)
ARMSTRONG – SILHOUETTE (1¾" HEIGHT)
CHICAGO METALLIC – ULTRALINE 3500/3600
USG/DONN – FINELINE (1 25/32" HEIGHT)
GORDON INC. – SIMPLICITY A-SERIES
9/16
5/16
SCREW SLOT GRID
(EXTRUDED ALUMINUM)
NARROW REGRESSED GRID
(D916, 2x2D)
ARMSTRONG – TRIMLOK
USG/DONN – HIGHLINE
GORDON INC. – SIMPLICITY B-SERIES
9/16
NOTES:
1. T-BAR HEIGHTS RANGE FROM 1½" – 2¼". CHECK WITH FACTORY TO ASSURE
COMPATIBILITY BEFORE SPECIFYING DIFFUSERS FOR THESE TYPES OF GRIDS.
2. ALL DIMENSIONS ARE IN INCHES.
VAV-PRC008-EN D 5

Diffusers—
Linear
Slot
Dimensional
Data—
LINR
LINR
INLET BALANCING DAMPER
(OPTIONAL)
INTERNAL
INSULATION
H
NOMINAL LENGTH – 1
W
END BRACKET DETAIL
DIFFUSER
HEIGHT H
1
9
4
7
12
16
14
LOW
MED
HIGH
INLET
DIAMETER
6"
8"
10"
INLET DIAMETERS ARE BASED
ON A COMBINATION OF CEILING
TYPE AND DIFFUSER LENGTH.
SEE CHART ON INLET AVAILABILITY.
MODEL
NUMBER
1S1W
2S1W
2S2W
3S1W
3S2I
3S1I
4S2W
DIFFUSER
WIDTH W
13
116
1
3 16
1
4 8
5
4
16
3
5 8
3
5
8
5
6
8
TILE FLANGE DETAIL
1S1W
1-SLOT
1-WAY
2S1W
2-SLOT
1-WAY
2S2W
2-SLOT
2-WAY
3S1W
3-SLOT
1-WAY
3S1I
3-SLOT
2-WAY
3S1I
3-SLOT
1-WAY
4S2W
4-SLOT
2-WAY
NOTES:
1. FIXED VANE PROVIDES A DRAFTLESS AIR PATTERN OVER THE
FULL RANGE OF FLOW. EXCELLENT FOR VARIABLE VOLUME.
2. LOWER FLANGES PROVIDE TILE SUPPORT AS AN INTEGRAL PART
OF THE DIFFUSER HOUSING.
3. AVAILABLE IN NOMINAL LENGTHS OF 2', 2.5', 4', AND 5'.
4. MATERIAL: 24-GAGE GALVANNEALED STEEL.
5. ALL EXPOSED SURFACES HAVE WHITE ENAMEL FINISH.
6. ALL DIMENSIONS ARE IN INCHES.
1SDR
1-SLOT
Direct Discharge
2SDR
2-SLOT
Direct Discharge
D 6
VAV-PRC008-EN

Diffusers—
Linear
Slot
Dimensional
Data—
LINR
LINR OPEN RETURNS
NOMINAL LENGTH – 1
END BRACKET DETAIL
5
5
1S1W
NOTES:
1. LOWER FLANGES PROVIDE TILE SUPPORT AS AN INTEGRAL
PART OF THE DIFFUSER HOUSING.
2. AVAILABLE IN NOMINAL LENGTHS OF 2', 2.5', 4', AND 5'.
3. ALL EXPOSED SURFACES HAVE WHITE ENAMEL FINISH.
4. RETURNS ARE MADE OF 24-GAGE GALVANNEALED STEEL.
5. ALL DIMENSIONS ARE IN INCHES.
VAV-PRC008-EN D 7

Diffusers—
Linear
Slot
Dimensional
Data—
LINR
ONE WAY LINEAR SLOT DIFFUSER OR RETURN SLOT
U.L. Listed
Fusible Link
Fire Damper
20-gage Steel
1S1W 2S1W 3S1W
1-SLOT
2-SLOT
3-SLOT
1-WAY
1-WAY
1-WAY
TWO WAY LINEAR SLOT DIFFUSER OR RETURN SLOT
U.L. Listed
Fusible Link
Fire Damper
20-gage Steel
2S2W
2-SLOT
2-WAY
3S1I
3-SLOT
1-WAY
3S2I
3-SLOT
2-WAY
3S1I
3-SLOT
1-WAY
4S2W
4-SLOT
2-WAY
Notes:
1. Spring loaded dampers blades are hinged and held open by
158˚F (70˚C) fusible links.
2. This drawing is for pictorial view only and not to be used
for dimensional purposes.
3. The UL Reference R6700 VOLUME 2 (1-SLOT and 2-SLOT models only).
D 8
VAV-PRC008-EN

Diffusers—
Linear
Slot
Dimensional
Data—
LINR
SLOT DIFFUSER SURFACE MOUNT FRAMES
FOR PLASTER CEILING
ACTUAL
3
DIFFUSER + 1
LENGTH
W
DIFFUSER WIDTH
¾
¾
DIFFUSER
CLIP
MODEL DIFFUSER
NUMBER
1S1W
2S2W
3S1W
3S1I
FRAME
CEILING
3S2I
4S2W
SECTION DETAIL
(INSTALLED)
VAV-PRC008-EN D 9

Diffusers—
Linear
Slot
Inlet
Availability
Linear Slot Diffusers—Inlet Availability
24" Length 30" Length 48" Length 60" Length
Ceiling Type Slot Arrangement Low Med High Low Med High Low Med High Low Med High
15/16" T-Bar — 1-slot, 1-way 5" 5" — 5" 5" — 6" 6" — 6" 6" —
Plaster 2-slot, 1-way — 6" — — 6" — — 8" — — 8" —
3-slot, 1-way — — 8" — — 8" — — 10" — — 10"
2-slot, 2-way 6" 6" 6" 6" 6" 6" 8"o* 8" 8" 8"o* 8" 8"
3-slot, 2-way — — 8" — — 8" — — 10" — -— 10"
4-slot, 2-way — — 8" — — 8" — — 10" — — 10"
15/16" T-Bar 1-slot, 1-way — — — — — — 6" 6" — — — —
with Center 2-slot, 1-way — — — — — — — 8" — — — —
Notch 3-slot, 1-way — — — — — — — — 10" — — —
(2 x 2 T) 2-slot, 2-way — — — — — — 8"o* 8" 8" — — —
3-slot, 2-way — — — — — — — — 10" — — —
4-slot, 2-way — — — — — — — — 10" — — —
9/16" Narrow 1-slot, 1-way 5" 5" — — — — 6" 6" — 6" 6" —
Faced Grid or 2-slot, 1-way — 6" — — — — — 8" — — 8" —
9/16" Narrow 3-slot, 1-way — — 8" — — — — — 10" — — 10"
Regressed Grid 2-slot, 2-way 6" 8" 10" 6" 8" 10" 6" 8" 10" 6" 8" 10"
Or Concealed 3-slot, 2-way — — 10" — — 10" — — 10" — — 10"
Spline 4-slot, 2-way — — 10" — — 10" — — 10" — — 10"
9/16" Center 1-slot, 1-way — — — — — — 6" 6" — — — —
Notch—Narrow 2-slot, 1-way — — — — — — — 8" — — — —
Faced Grid or 3-slot, 1-way — — — — — — — — 10" — — —
9/16" Center 2-slot, 2-way — — — — — — 6" 8" 10" — — —
Notch—Narrow 3-slot, 2-way — — — — — — — — 10" — — —
Regressed Grid 4-slot, 2way — — — — — — — — 10" — — —
Note: *O- Oval
D 10
VAV-PRC008-EN

Diffusers—
Linear
Slot
Performance
Data—
LINR
Table 1- Style LINR Diffuser Performance
Supply Slot Performance–2'
1S1W Cfm 20 40 60 80 100
TSP .01 .03 .06 .10 .15
Throw 11 17 22 25 27
NC (20) (20) (20) 22 27
2S1W Cfm 40 80 120 160 200
TSP .01 .03 .07 .12 .18
Throw 14 21 27 31 34
NC (20) (20) (20) 26 31
2S2W Cfm 40 80 120 160 200
TSP .01 .03 .06 .09 .14
Throw 11 17 22 25 27
NC (20) (20) (20) 22 27
3S1W Cfm 60 120 180 240 300
TSP .01 .03 .06 .12 .19
Throw 17 27 35 40 43
NC (20) (20) (20) 26 31
3S2W Cfm 60 120 180 240 300
TSP .01 .03 .06 .10 .15
Throw 1 11 17 22 25 27
Throw 2 14 21 27 31 34
NC (20) (20) (20) 26 32
4S2W Cfm 80 160 240 320 400
TSP .01 .03 .06 .10 .15
Throw 14 21 27 31 34
NC (20) (20) 21 29 36
Supply Slot Performance–4'
1S1W Cfm 40 80 120 160 200
TSP .01 .03 .08 .14 .20
Throw 11 17 22 25 27
NC (20) (20) (20) 26 32
2S1W Cfm 80 160 240 320 400
TSP .01 .04 .08 .14 .22
Throw 14 21 27 31 34
NC (20) (20) 21 30 37
2S2W Cfm 80 160 240 320 400
TSP .01 .03 .06 .09 .15
Throw 11 17 22 25 27
NC (20) (20) (20) 26 32
3S1W Cfm 120 240 360 480 600
TSP .01 .03 .06 .12 .19
Throw 17 27 35 40 43
NC (20) (20) 21 30 37
3S2W Cfm 120 240 360 480 600
TSP .01 .03 .06 .10 .16
Throw 1 11 17 22 25 27
Throw 2 14 21 27 31 34
NC (20) (20) 22 31 38
4S2W Cfm 160 320 480 640 800
TSP .01 .03 .06 .11 .17
Throw 14 21 27 31 34
NC (20) (20) 26 34 42
Return Slot Performance–2'
1S1W Cfm 20 40 60 80 100
-SP .01 .03 .06 .10 .18
2S2W Cfm 40 80 120 160 200
-SP .01 .03 .06 .10 .19
Return Slot Performance–2.5'
1S1W Cfm 25 50 75 100 125
-SP .01 .03 .06 .10 .18
2S2W Cfm 50 100 150 200 250
-SP .01 .03 .06 .10 .19
Return Slot Performance–4'
1S1W Cfm 40 80 120 160 200
-SP .01 .03 .06 .10 .19
2S2W Cfm 80 160 240 320 400
-SP .01 .03 .06 .11 .20
Return Slot Performance–5'
1S1W Cfm 50 100 150 200 250
-SP .01 .03 .06 .11 .22
2S2W Cfm 100 200 300 400 500
-SP .01 .03 .06 .12 .23
Supply Slot Performance–2.5'
1S1W Cfm 25 50 75 100 125
TSP .01 .03 .06 .11 .16
Throw 11 17 22 25 27
NC (20) (20) (20) 23 28
2S1W Cfm 50 100 150 200 250
TSP .01 .03 .07 .12 .19
Throw 14 21 27 31 34
NC (20) (20) (20) 27 32
2S2W Cfm 50 100 150 200 250
TSP .01 .03 .06 .09 .14
Throw 11 17 22 25 27
NC (20) (20) (20) 23 28
3S1W Cfm 75 150 225 300 375
SP .01 .03 .06 .12 .19
Throw 17 27 35 40 43
NC (20) (20) (20) 27 33
3S2I Cfm 75 150 225 300 375
3S1I TSP .01 .03 .06 .10 .15
Throw 1 11 17 22 25 27
Throw 2 14 21 27 31 34
NC (20) (20) (20) 27 33
4S2W Cfm 100 200 300 400 500
TSP .01 .03 .06 .10 .15
Throw 14 21 27 31 34
Supply Slot Performance–5'
1S1W Cfm 50 100 150 200 250
TSP .01 .04 .09 .15 .24
Throw 11 17 22 25 27
NC (20) (20) 21 30 37
2S1W Cfm 100 200 300 400 500
TSP .01 .04 .08 .14 .22
Throw 14 21 27 31 34
NC (20) (20) 24 35 43
2S2W Cfm 100 200 300 400 500
TSP .01 .03 .06 .11 .17
Throw 11 17 22 25 27
NC (20) (20) 21 30 37
3S1W Cfm 150 300 450 600 750
TSP .01 .03 .07 .13 .21
Throw 17 27 35 40 43
NC (20) (20) 24 35 43
3S2W Cfm 150 300 450 600 750
TSP .01 .03 .06 .11 .18
Throw 1 11 17 22 25 27
Throw 2 14 21 27 31 34
NC (20) (20) 25 36 44
4S2W Cfm 200 400 600 800 1000
TSP .01 .03 .07 .13 .20
Throw 14 21 27 31 34
NC (20) (20) 32 40 48
NC (20) (20) 22 30 38
TSP - Static pressure readings in in. wg.
Throw - Horizontal distance in feet to reach terminal velocity, VT, of 50 FPM.
Throw 1 and Throw 2 indicates number of slots throwing each direction on 3-slot, 2-way diffuser.
NC - A one number evaluation of sound generation derived from sound power levels (re: 10-12 watts) less 10 db room absorption. (20) indicates less than 20 NC rating.
Data shown is for one diffuser. Additional diffusers will tend to increase the NC value by perhaps 2 db each, depending on size, air quantity and distance from other
diffusers. Return applications will add +2 db to all values shown. Performance data is based on tests performed in accordance with ADC 1062 GRD-84 Test Code.
VAV-PRC008-EN D 11

Diffusers—
Adjustable
Flow
Model
Number
Description
Adjustable Flow Diffusers
The features of the Adjustable Flow
Diffuser are described by the product
categories shown in bold. Within each
category the options available are
listed.
FAPF
VAPF
MODL Model
VLSD Supply Diffuser
VLRD Return
DSEQ Design Sequence
A A Design Sequence
TYPE Diffuser Type
FAPF Fully Adjustable Pattern Flow
Diffuser
VAPF Vane Adjustable Pattern Flow
Diffuser
AABD Adjustable Air Bar Diffuser
VAPS Vane Adjustable Pattern Flow
Diffuser
LGTH Diffuser Length
2 Diffuser Length – 2'
3 Diffuser Length – 3'
4 Diffuser Length – 4'
5 Diffuser Length – 5'
22 Diffuser Length – 22"
34 Diffuser Length – 34"
46 Diffuser Length – 46"
58 Diffuser Length – 58"
24 Diffuser Length – 23 3/4"
36 Diffuser Length – 35 3/4"
48 Diffuser Length – 47 3/4"
60 Diffuser Length – 59 3/4"
HGTH Diffuser Height
LOW Low Height
MED Medium Height
HIGH High Height
WDTH Ceiling Tee Width
9/16 Ceiling Grid – 9/16"
1516 Ceiling Grid – 15/16"
SLOT Slot Configuration
1SLT Slot – 1
2SLT Slot – 2
3SLT Slot – 3
4SLT Slot – 4
CEIL Ceiling Type
TBAR T-bar – 15/16"
T916 Narrow Faced T-bar – 9/16"
2X2T Center Notched Grid – 15/16"
2X2N Narrow Faced Center Notch – 9/16"
2X2D Narrow Regressed Cntr Notch – 9/16"
PLSR Plaster Ceiling
D916 Narrow Regressed T-bar - 9/16"
SPLN Concealed Spline
DMPR Damper Type
BAL Balancing Damper
DISW Discharge Width
.5 Discharge Width – 1/2"
.75 Discharge Width – 3/4"
1.0 Discharge Width – 1"
1.25 Discharge Width – 1 1/4"
1.5 Discharge Width – 1 1/2"
2.0 Discharge Width – 2"
2.25 Discharge Width – 2 1/4"
2.5 Discharge Width – 2 1/2"
STYL Diffuser Style
NONE For VAPF, AABD, and VAPS
11 1-slot – one way
12 1-slot – 2-way left or right
13 1-slot – 1-way with 1
factory-installed T-bar
14 1-slot – 2-way left or right
with 1 factory-installed T-bar
15 1-slot – 1-way with 2
factory-installed T-bars
16 1-slot – 2-way left or right
with 2 factory-installed T-bars
21 2-slot – 2-way opposite
22 2-slot – 2-way opposite left
or right
23 2-slot – 2-way opposite
with 1 factory-installed T-bar
24 2-slot – 2-way opposite left
or right with 1 factory-installed
T-bar
25 2-slot – 2-way opposite
with 2 factory-installed T-bars
26 2-slot – 2-way opposite left
or right with 2 factory-installed
T-bars
27 2-slot – 2-way opposite with
3 factory-installed T-bars
28 2-slot – 2-way opposite left
or right with 3 factory-installed
T-bars
29 2-slot – 2-way opposite with
2 factory-installed T-bars
33 3-slot – 1-way
34 3-slot – 2-way left or right
43 1-slot – 2-way opposite
44 4-slot – 2-way opposite left
or right
D 12
VAV-PRC008-EN

Diffusers—
Adjustable
Flow
Dimensional
Data—
VAPF
VAPF
INLET
DIA +3
INLET
DIAMETER
6"
8"
10"
HEIGHT
LOW - 9"
MED - 11"
HIGH - 13"
NOMINAL LENGTH - ¼
NOMINAL LENGTH
INLET DAMPER (OPTIONAL)
½ INTERNAL INSULATION
9
16
A
B
9 9
9
16
A
16
A
16
B
B
CENTER T - BAR
STANDARD ON 2, 3, 4 SLOT
T - BAR CLIPS
(OPTIONAL)
A
B
SIDE T - BARS
(OPTIONAL)
NOTES:
1. MATERIAL: 24-GAGE GALVANNEALED STEEL. ALL EXPOSED
SURFACES PAINTED FLAT BLACK. T - BARS ARE WHITE.
2. AVAILABLE IN NOMINAL LENGTHS OF 2', 3', 4', & 5'.
3. ALUMINUM VANE WITH FELT SEAL IS FULLY ADJUSTABLE FROM
THE FACE FOR LEFT, RIGHT, OR VERTICAL THROW.
4. DESIGNED FOR VARIABLE OR CONSTANT VOLUME SYSTEMS.
5. MAXIMUM PERFORMANCE AND FLEXIBILITY FOR INTERIOR OR
PERIMETER APPLICATIONS IN A VARIETY OF CEILING SYSTEMS.
6. ALL DIMENSIONS ARE IN INCHES
SLOT
WIDTH A
3"
4
1"
1 1"
2
DIFFUSER WIDTH B
1-SLOT 2-SLOT 3-SLOT 4-SLOT
1
7" 5"
3
5"
8 8
5
16
7"
1" 1" 1"
2
8
4 6
8 16
8"
2
5"
5
1" 9"
7
8 8 16
10"
VAV-PRC008-EN D 13

Diffusers—
Adjustable
Flow
Performance
Data—
VAPF
Style VAPF Diffuser Performance
1-Slot–2'
Discharge Width
.75 Cfm 15 25 35 50 75 100
(Ak .05) TSP .01 .02 .04 .09 .20 .35
(Low) Throw 5 7 9 11 15 17
NC (20) (20) (20) (20) 31 39
1.0 Cfm 20 35 50 75 100 125
(Ak .06) TSP .01 .03 .06 .14 .25 .39
(Low) Throw 5 8 13 15 17 19
NC (20) (20) (20) 24 31 37
1.5 Cfm 25 50 85 100 125 175
(Ak .11) TSP .01 .02 .05 .08 .13 .26
(Med) Throw 3 9 13 17 19 24
NC (20) (20) (20) 21 26 35
1-Slot–4'
Discharge Width
.75 Cfm 25 50 75 100 125 175
(Ak .10) TSP .01 .03 .06 .10 .16 .32
(Low) Throw 4 10 14 17 19 22
NC (20) (20) (20) 22 28 38
1.0 Cfm 50 75 100 150 200 250
(Ak .11) TSP .02 .04 .06 .14 .26 .40
(Med) Throw 8 13 18 21 23 27
NC (20) (20) (20) 27 34 40
1.5 Cfm 50 100 150 200 250 300
(Ak .22) TSP .01 .02 .05 .09 .14 .20
(Med) Throw 4 11 17 22 25 28
NC (20) (20) (20) 24 29 34
1-Slot–5'
Discharge Width
.75 Cfm 50 75 100 125 150 200
(Ak .12) TSP .02 .03 .06 .09 .13 .23
(Med) Throw 8 12 17 19 22 24
NC (20) (20) (20) 23 28 37
1.0 Cfm 75 100 150 200 250 300
(Ak .14) TSP .02 .04 .09 .16 .25 .36
(High) Throw 9 14 20 24 27 28
NC (20) (20) 22 30 35 40
1.5 Cfm 75 125 200 250 300 350
(Ak .28) TSP .01 .02 .05 .08 .12 .16
(High) Throw 7 13 20 26 29 31
NC (20) (20) (20) 25 29 33
2-Slot–2'
Discharge Width
.75 Cfm 25 50 75 100 125 150
(Ak .10) TSP .01 .03 .06 .10 .16 .22
(Low) Throw 4 10 14 17 20 24
NC (20) (20) (20) 22 28 34
1.0 Cfm 50 75 100 125 150 200
(Ak .11) TSP .02 .04 .08 .12 .17 .30
(Low) Throw 9 13 18 19 22 25
NC (20) (20) (20) 22 27 34
1.5 Cfm 50 100 150 200 250 300
(Ak .22) TSP .01 .02 .05 .09 .14 .20
(Med) Throw 6 12 19 23 27 30
NC (20) (20) (20) 24 29 34
2-Slot–4'
Discharge Width
.75 Cfm 50 100 150 200 250 300
(Ak .19) TSP .01 .03 .06 .10 .16 .23
(Med) Throw 6 13 19 24 27 30
NC (20) (20) (20) 25 31 37
1.0 Cfm 100 150 200 250 300 400
(Ak .22) TSP .02 .05 .08 .12 .18 .32
(Med) Throw 11 16 21 26 28 33
NC (20) (20) (20) 25 30 37
D 14
2-Slot–5'
Discharge Width
.75 Cfm 75 125 200 250 300 375
(Ak .24) TSP .01 .02 .06 .10 .14 .22
(High) Throw 7 13 20 26 29 32
NC (20) (20) (20) 26 31 38
1.0 Cfm 150 200 250 300 400 500
(Ak .28) TSP .03 .05 .07 .10 .18 .29
(High) Throw 14 20 27 29 32 34
NC (20) (20) 20 25 33 38
3-Slot–2'
Discharge Width
.75 Cfm 50 75 125 175 225 250
(Ak .14) TSP .01 .02 .07 .13 .21 .26
(Med) Throw 7 11 19 22 26 28
NC (20) (20) (20) 28 35 39
1.0 Cfm 75 100 150 175 225 300
(Ak .17) TSP .02 .03 .07 .10 .16 .28
(Med) Throw 10 15 22 23 26 30
NC (20) (20) (20) 22 29 36
1.5 Cfm 75 125 200 250 300 375
(Ak .33) TSP .01 .02 .04 .06 .09 .14
(High) Throw 5 12 20 26 29 32
NC (20) (20) (20) 21 25 31
3-Slot–4'
Discharge Width
.75 Cfm 75 150 225 300 375 450
(Ak .29) TSP .01 .03 .06 .10 .16 .23
(High) Throw 6 17 26 30 33 37
NC (20) (20) (20) 27 33 38
1.0 Cfm 150 225 300 400 500 600
(Ak .34) TSP .02 .04 .08 .14 .22 .31
(High) Throw 16 23 31 34 39 43
NC (20) (20) 21 29 34 39
4-Slot–2'
Discharge Width
.75 Cfm 50 100 150 200 250 300
(Ak .19) TSP .01 .03 .06 .10 .16 .24
(Med) Throw 5 14 20 24 28 30
NC (20) (20) (20) 25 31 37
1.0 Cfm 100 150 200 250 300 400
(Ak .22) TSP .02 .05 .08 .12 .18 .32
(Med) Throw 13 19 26 28 30 34
NC (20) (20) (20) 25 30 37
1.5 Cfm 75 150 225 300 375 450
(Ak .44) TSP .01 .02 .03 .06 .09 .13
(High) Throw 3 13 19 27 33 35
NC (20) (20) (20) (20) 25 30
4-Slot–4'
Discharge Width
.75 Cfm 100 200 300 400 500 600
(Ak .39) TSP .01 .03 .06 .10 .16 .22
(High) Throw 7 19 29 34 39 43
NC (20) (20) (20) 28 34 40
TSP - Total pressure readings in in. wg with horizontal throw.
Ak - Area factor along with cfm is used to determine the
average face velocity - Vk = cfm / Ak
Throw - Horizontal distance in feet to reach terminal velocity,
VT, of 50 FPM.
NC - A one number evaluation of sound generation derived
from sound power levels ( re: 10-12 watts) less 10 db room
absorption. (20) indicates less than 20 NC rating. Data shown is
for one diffuser. Additional diffusers will tend to increase the
NC value by perhaps 2 db each, depending on size, air quantity
and distance from other diffusers. Return applications will add
+2 db to all values shown. Peformance data is based on tests
performed in accordance with ADC 1062 GRD-84 Test Code.
VAV-PRC008-EN

Diffusers—
Adjustable
Flow
Dimensional
Data—
VAPS
VAPS
Inlet Damper (Optional)
1"
1
2
Insulation
Length
Inlet
Diameter
LENGTH
22"
34"
46"
58"
24" (23-3/4")
36" (35-3/4")
48" (47-3/4")
60" (59-3/4")
INLET
6"
7"
8"
10" OVAL
6"
7"
8"
10" OVAL
1 3 "
16
3"
7"
1
8
7"
8
12"
13"
16
3"
1
16
13"
2
16
13"
16
3"
1
16
13"
2
16
Open Return
Supply Diffuser
Notes:
1. Material: 24-gage galvannealed steel with exposed surfaces and
pattern controller painted flat black.
2. Neck opening is located so that the bottom of inlet is above air pattern
controller throughout the range of settings including vertical.
3. VAPS diffusers are only available for 15/16" T-Bar and 15/16" center
notched grid ceilings.
4. All dimensions are in inches.
VAV-PRC008-EN D 15

Diffusers—
Adjustable
Flow
Dimensional
Data—
FAPF
FAPF 1 and 2 SLOT
1
1
2
B + 1
INSULATION
INLET
DIA +3
1
2
NOMINAL LENGTH - ¼
NOMINAL LENGTH
1
2
2
DAMPERS
(OPTIONAL)
INLET
DIAMETER
6"
8"
10"
HEIGHT
LOW - 9.5"
MED - 11.5"
HIGH - 13.5"
SLOT WIDTH A
OVERALL WIDTH B
A
B
ONE SLOT SUPPLY
B
ONE SLOT
TWO SLOT
1" 3" 1" 1" 1"
1"
1" 1"
1
2
1"
3"
4
1 1
4 2 2
4
1
4
2
1" 1" 3"
1 1 1
1" 1" 1"
2
2" 3 2
3" 3" 3"
4 4 4
3 3 4
4 4 4 4 5 4
+
1
2
T-CLIPS
(OPTIONAL)
A
B
TWO SLOT SUPPLY
NOTES:
1. ADJUSTABLE VANES FOR HORIZONTAL OR VERTICAL THROW.
DUAL VANE OPTION ALLOWS EACH SLOT TO BE ADJUSTED FOR
LEFT, RIGHT OR VERTICAL THROW AND DAMPERING.
2. DIFFUSERS OVER 36" LONG HAVE VANES MADE IN TWO
SEPARATE PIECES TO ALLOW SPLITTING AIR FLOW SETTINGS
WITHIN EACH SLOT.
D
A
B
D
+ 3
ONE SLOT RETURN
B
A
TWO SLOT RETURN
3. AVAILABLE IN NOMINAL LENGTHS FROM 2', 3', 4', AND 5'.
4. MATERIAL: 24-GAGE GALVANNEALED STEEL.
5. ALL EXPOSED SURFACES PAINTED FLAT BLACK. FACTORY-
INSTALLED T-BARS ARE WHITE.
6. ALL DIMENSIONS ARE IN INCHES.
SLOT WIDTH A
OVERALL WIDTH B
OUTLET HEIGHT D
ONE SLOT
TWO SLOT
1" 3" 1" 1" 1" 3"
1" 1
1"
1" 1 1
1
1"
2 4 4 2 2 4 4 2
1" 1" 3" 1"
1
2 3" 1" 3" 1" 3"
1
2
1 2" 3 3
4 4
3 4
4 4
4 4 4
5
4
1" 3"
1
1" 1" 1" 1"
1" 1 1"
2
1 2" 2 3"
4 4 2 2 2
STYLES:
ONE SLOT
TWO SLOT
11 12 13 14 15 16 21 22 23 24 25 26 27 28 29
D 16
VAV-PRC008-EN

Diffusers—
Adjustable
Flow
Dimensional
Data—
FAPF
FAPF 3 and 4 SLOT
INLET DAMPER
(OPTIONAL)
INSULATION
INLET
DIA + 3½
NOMINAL LENGTH - ¼
INLET
DIAMETER
HEIGHT
2½
½
6"
LOW - 9.5"
8"
10"
MED - 11.5"
HIGH - 13.5"
A
B
SIDE T-BARS
(OPTIONAL)
CENTER T-BARS
(STANDARD)
NOTES:
1. AVAILABLE IN NOMINAL LENGTHS FROM 2 TO 5 FEET.
2. MATERIAL: 24-GAGE GALVANNEALED STEEL.
3. ALL EXPOSED SURFACES PAINTED FLAT BLACK.
FACTORY-INSTALLED T-BARS ARE WHITE.
4. ALL DIMENSIONS ARE IN INCHES.
SLOT
WIDTH A
OVERALL
WIDTH B
THREE SLOT FOUR SLOT
3"
3"
3"
4 1" 1 1"
1" 1
2 4 4
15" 11" 3" 5" 5" 5"
4 5 7 6 7 9
16 16 16 8 8 8
PATTERN CONFIGURATIONS
SINGLE VANES ALLOW EACH SLOT TO
THROW IN ONE HORIZONTAL DIRECTION
OR VERTICAL. SPECIFY THE NUMBER OF
SLOTS TO THROW IN EACH DIRECTION.
EX:
(STYL 33)
(STYL 43)
DUAL VANES ALLOW EACH SLOT TO BE
ADJUSTED FOR RIGHT, LEFT OR VERTICAL
THROW. (STYL 34)
(STYL 44)
VAV-PRC008-EN D 17

Diffusers—
Adjustable
Flow
Performance
Data—
FAPF
Style FAPF Diffuser Performance
1-Slot–2'
Discharge Width
.5 Cfm 30 40 50 60 70 80 90 100
TSP .08 .10 .16 .22 .31 .40 .50 .63
Throw 5 5 7 8 9 10 12 13
NC (20) (20) 26 31 36 40 44 46
.75 Cfm 30 40 50 60 70 80 90 100
TSP .04 .05 .08 .11 .15 .20 .25 .31
Throw 4 5 6 7 8 9 10 11
NC (20) (20) 21 26 31 35 38 41
1.0 Cfm 50 60 70 80 90 100 120 140 160
TSP .03 .04 .05 .07 .09 .10 .15 .21 .25
Throw 5 5 6 7 8 8 10 12 13
NC (20) (20) (20) 23 28 29 37 40 43
1.25 Cfm 60 70 80 90 100 120 140 160 180 200
TSP .03 .04 .06 .08 .09 .13 .20 .23 .27 .30
Throw 5 6 6 7 8 9 11 13 14 14
NC (20) (20) (20) 21 23 30 35 38 40 42
1.5 Cfm 80 90 100 120 140 160 180 200 225
TSP .04 .05 .06 .09 .13 .17 .21 .26 .32
Throw 8 9 10 12 14 16 18 20 22
NC (20) (20) (20) (20) 25 29 33 37 40
1-Slot–4'
Discharge Width
.5 Cfm 50 60 70 80 90 100 120 140 160
TSP .04 .06 .07 .09 .12 .16 .22 .26 .35
Throw 5 6 6 7 9 10 12 13 14
NC (20) (20) (20) 20 24 30 34 37 40
.75 Cfm 80 90 100 120 140 160 180 200 225
TSP .05 .06 .07 .10 .14 .19 .24 .29 .33
Throw 6 7 8 10 11 13 15 16 17
NC (20) (20) 22 27 32 37 41 44 46
1.0 Cfm 100 120 140 160 180 200 225 250 275 300
TSP .03 .04 .06 .07 .09 .11 .14 .17 .19 .22
Throw 6 7 8 10 11 12 14 15 16 18
NC (20) (20) 21 26 31 33 38 42 43 46
1.25 Cfm 120 140 160 180 200 225 250 275 300 325
TSP .03 .04 .06 .08 .10 .12 .15 .17 .20 .24
Throw 5 6 8 10 11 13 14 15 17 18
NC (20) (20) 20 24 30 32 35 40 42 45
1.50 Cfm 140 160 180 200 225 250 275 300 325 350 400
TSP .03 .05 .05 .07 .09 .10 .13 .15 .18 .21 .26
Throw 10 11 12 14 16 17 20 21 23 25 27
NC (20) (20) (20) (20) (20) 20 25 26 31 33 37
1-Slot–5'
Discharge Width
1.50 Cfm 225 250 275 300 325 350 400 450 500 550 600
TSP .05 .06 .08 .09 .11 .13 .16 .19 .24 .32 .38
Throw 14 16 17 19 21 22 25 29 32 36 38
NC (20) (20) (20) 20 21 24 29 33 36 40 43
D 18
VAV-PRC008-EN

Diffusers—
Adjustable
Flow
Performance
Data—
FAPF
Style FAPF Diffuser Performance (con't.)
2-Slot–2'
Discharge Width
.5 Cfm 50 60 70 80 90 100 120 140 160
TSP .04 .06 .07 .10 .13 .16 .22 .28 .32
Throw 4 4 5 6 7 8 9 10 11
NC (20) (20) (20) (20) 23 26 32 35 38
.75 Cfm 80 90 100 120 140 160 180 200 220
TSP .05 .06 .08 .11 .15 .20 .25 .31 .36
Throw 5 5 6 7 8 9 10 12 12
NC (20) 21 24 29 34 38 42 45 48
1.0 Cfm 100 120 140 160 180 200 220 240 260 280
TSP .03 .04 .06 .07 .09 .11 .15 .16 .19 .23
Throw 5 5 6 7 8 9 11 11 12 13
NC (20) 23 26 31 36 38 42 44 47 48
1.25 Cfm 120 140 160 180 200 220 240 260 280 300
TSP .03 .04 .05 .06 .07 .08 .09 .10 .14 .16
Throw 5 5 6 6 7 8 9 10 11 12
NC (20) 23 25 26 31 34 35 35 40 44
1.50 Cfm 140 160 180 200 220 240 260 280 300 325
TSP .03 .04 .05 .07 .08 .10 .12 .14 .17 .20
Throw 7 8 9 11 11 12 13 14 15 16
NC (20) (20) (20) (20) (20) 20 22 25 27 29
2-Slot–4'
Discharge Width
.5 Cfm 100 120 140 160 180 200 220 240 260 280
TSP .04 .05 .07 .10 .13 .15 .18 .22 .26 .29
Throw 5 6 7 8 9 9 11 12 13 13
NC (20) (20) (20) 22 27 29 30 35 37 38
.75 Cfm 140 160 180 200 220 240 260 280 300 350
TSP .04 .06 .07 .08 .09 .11 .13 .15 .17 .24
Throw 6 6 7 8 9 10 11 11 13 14
NC (20) (20) 22 27 28 32 34 36 39 42
1.0 Cfm 180 200 220 240 260 280 300 350 400 450
TSP .02 .03 .03 .04 .05 .05 .06 .08 .10 .14
Throw 6 6 7 7 8 9 9 11 12 14
NC (20) (20) 20 22 25 27 30 35 38 41
1.25 Cfm 200 220 240 260 280 300 350 400 450 500
TSP .02 .03 .04 .05 .05 .05 .06 .08 .10 .13
Throw 6 6 7 7 8 9 11 12 12 14
NC (20) (20) (20) 20 21 25 28 34 37 41
1.50 Cfm 300 325 350 375 400 450 500 550 600 700
TSP .03 .04 .05 .06 .06 .08 .10 .12 .15 .21
Throw 10 11 12 12 15 16 17 20 21 25
NC (20) (20) (20) (20) (20) (20) 21 24 28 33
2-Slot–5'
Discharge Width
1.50 Cfm 325 350 375 400 450 500 550 600 700 800
TSP .03 .03 .04 .04 .05 .07 .07 .09 .13 .17
Throw 11 12 13 14 15 16 17 18 24 26
NC (20) (20) (20) (20) (20) (20) (20) 20 25 29
TSP - Total pressure readings in in. wg with horizontal throw.
Throw - Horizontal distance in feet to reach terminal velocity, VT, of 50 FPM.
NC - A one number evaluation of sound generation derived from sound power levels ( re:
10-12 watts) less 8 db room absorption. (20) indicates less than 20 NC rating. Data shown
is for one diffuser. Additional diffusers will tend to increase the NC value by perhaps 2 db
each, depending on size, air quantity and distance from other diffusers. Return
applications will add +2 db to all values shown. Performance data is based on tests
performed in accordance with ADC 1062 GRD-84 Test Code.
VAV-PRC008-EN D 19

Diffusers—
Adjustable
Flow
Dimensional
Data—
AABD
AABD
INLET
DIA + 3½
NOMINAL LENGTH
INTERNAL INSULATION
INLET DAMPER
(OPTIONAL)
1½
INLET
DIAMETER
HEIGHT
6"
LOW – 9.5"
8"
MED – 11.5"
10"
HIGH – 13.5"
2½
½
T-CLIPS
(OPTIONAL)
NOTES:
1. SLIDING AIR BAR PROVIDES LEFT, RIGHT, OR VERTICAL THROW.
2. DIFFUSERS OVER 36" IN LENGTH HAVE TWO AIR BARS
PER SLOT TO ALLOW SPLIT AIR PATTERNS.
A
B
B
T-BARS BY OTHERS
A
3. AVAILABLE IN NOMINAL LENGTHS FROM 2' TO 5'.
NORMAL T-BAR APPLICATION IS NORMAL LENGTH
LESS ¼".
4. MATERIAL: 24-GAGE GALVANNEALED STEEL. ALL
EXPOSED SURFACES PAINTED BLACK.
5. ONLY AVAILABLE FOR 15/16" T-BAR AND
CENTER NOTCHED GRID (2X2T) CEILING ONLY.
6. ALL DIMENSIONS ARE IN INCHES.
ONE SLOT
TWO SLOT
SLOT WIDTH A
3 1 1 3 1 1
– 1 1 – 1 – 2 – 1 1 – 1 –
4 4 2 4 4 2
3 3 3 3 3 3
OVERALL WIDTH B 1 1 1
1
– 1 – 2 – 2 – 3 – 3 – 3 – 4 – 5 –
2 4 4 4 8 4 4 4 4
D 20
VAV-PRC008-EN

Diffusers—
Adjustable
Flow
Performance
Data—
AABD
Style AABD Diffuser Performance
1-Slot–4'
Discharge Width
.75 Cfm 50 75 100 125 150
(Low) TSP .02 .05 .10 .15 .23
Throw 4–7 9–12 13–17 15–21 17–25
NC (20) 23 31 37 43
1.0 Cfm 75 100 125 150 175
(Med) TSP .04 .08 .12 .18 .23
Throw 8–11 12–17 13–18 16–23 18–26
NC 22 29 34 40 45
1.25 Cfm 75 100 150 200 250
(Med) TSP .02 .05 .10 .17 .26
Throw 7–11 10–14 13–18 16–23 20–31
NC (20) 21 32 40 47
1.50 Cfm 75 100 150 200 250
(Med) TSP .02 .04 .08 .13 .21
Throw 5–9 9–13 12–17 15–21 19–28
NC (20) (20) 29 38 46
2.0 Cfm 100 150 200 250 300
(Med) TSP .04 .07 .12 .18 .27
Throw 8–12 10–14 12–17 15–21 18–26
NC (20) 26 36 43 48
2.25 Cfm 100 150 200 250 300
(Med) TSP .03 .06 .09 .14 .20
Throw 6–9 9–12 11–15 14–19 17–25
NC (20) 25 34 40 45
2.50 Cfm 150 200 250 300 350
(Med) TSP .05 .09 .13 .18 .25
Throw 7–11 10–14 13–18 15–21 18–26
NC 24 33 40 44 49
2 Slot–4'
Discharge Width
.75 Cfm 100 150 200 250 300
(Med) TSP .02 .05 .10 .16 .24
Throw 4–7 9–12 13–17 15–21 17–24
NC 21 25 34 40 46
1.0 Cfm 150 200 250 300 350
(Med) TSP .04 .08 .12 .18 .23
Throw 8–11 12–17 13–18 16–23 18–26
NC 23 32 37 43 49
1.25 Cfm 150 200 250 300 400
(High) TSP .02 .05 .07 .10 .18
Throw 7–11 10–14 11–16 13–18 16–23
NC (20) 23 28 35 43
1.50 Cfm 150 200 300 400 500
(High) TSP .02 .04 .09 .14 .22
Throw 5-9 9-13 12-17 15-21 19-28
NC (20) 21 32 41 49
UNIT LENGTH FACTORS
Multiply 48" data by the following factors:
Nominal
Length TSP Throw NC
24" x 3.0 x 2.0 x 1.4
36" x1.4 x 1.5 x 1.1
60" x 0.8 x 0.9 x 1.0
TSP - Static pressure readings in in. wg.
Throw - Horizontal distance in feet to reach terminal velocity, VT, of 50 FPM.
NC - A one number evaluation of sound generation derived from sound power levels ( re: 10-12 watts) less 10
db room absorption. (20) indicates less than 20 NC rating. Data shown is for one diffuser. Additional diffusers
will tend to increase the NC value by perhaps 2 db each, depending on size, air quantity and distance from
other diffusers. Return applications will add +2 db to all values shown. Peformance data is based on tests
performed in accordance with ADC 1062 GRD-84 Test Code.
VAV-PRC008-EN D 21

Diffusers—
Light
Fixture
Model
Number
Description
Light Fixture Diffusers MODL Model
The features of the Light Fixture
Diffuser are described by the product
categories shown in bold. Within each
category the options available are
listed.
VLSD - SNGL
with Side Inlet
VLSD Supply Diffuser
VLRD Return Diffuser
DSEQ Design Sequence
A A Design Sequence
TYPE Diffuser Type
SNGL Single Side Diffuser
DUAL Dual Side Diffuser
LGTH Diffuser Length
2 Diffuser Length – 2'
3 Diffuser Length – 3'
4 Diffuser Length – 4'
2x2 Light Fixture Diffuser Size – 2' x 2'
3x3 Light Fixture Diffuser Size – 3' x 3'
1x4 Light Fixture Diffuser Size – 1' x 4'
2x4 Light Fixture Diffuser Size – 2' x 4'
4x4 Light Fixture Diffuser Size – 4' x 4'
INLT Inlet Size And Location
S5 5” Side Inlet
S6 6” Side Inlet
T5 5” Top Inlet
T6 6” Top Inlet
T7 7” Top Inlet
T8 8” Top Inlet
INSL Insulation
NONE No Insulation On Diffuser
INT Matte-Faced – Internally
Insulated
EXT Foil-Faced – Externally
Insulated
VLSD-Dual
with Side Inlet
VLSD-DUAL
with Top Inlet
D 22
VAV-PRC008-EN

Diffusers—
Light
Fixture
Dimensional
Data—
VLSD–SNGL
VLSD – SNGL
MOUNTING
BRACKET
1
13
16 11 2
4 7 8
6 3 4
INTERNAL INSULATION
(OPTIONAL)
VOLUME DAMPER
ACCESSIBLE THROUGH
AIR SLOT - 4' MODELS
HAVE TWO INDIVIDUAL
DAMPERS
AIR PATTERN BAR
OMITTED WHEN LIGHT
FIXTURE RAIL IS FURNISHED
WITH DEFLECTOR
HOLD-DOWN TABS TO
ALIGN AND LOCK DIFFUSER
TO LIGHT FIXTURE AIR SLOT
(SHIPPED FLAT)
3
8
3
4
1 1
16
1
8
1 3 4
5
8
INSULATION
L
NONE - STEEL UNINSULATED
INT - STEEL WITH 1/2" FOIL FACED EXTERNAL INSULATION
EXT - STEEL WITH 1/2" FOIL FACED EXTERNAL INSULATION
INSL - NONE INSL - INT INSL - EXT
NOTES:
1. DIFFUSERS ARE AVAILABLE AS SUPPLY UNITS
FOR REGRESSED OR FLUSH AIR HANDLING
LIGHT DIFFUSERS.
2. MATERIAL: GALVANNEALED STEEL.
EXPOSED SLOT AREA PAINTED FLAT BLACK.
3. HEIGHT: 6¾" STANDARD. CEILING CLEARANCE
REQUIRED IS 7" PLUS AMOUNT LIGHT IS REGRESSED
ABOVE CEILING LINE. (FOR SINGLE SIDE ONLY)
4. INLETS: 5" OR 6" OVAL STANDARD ON SIDE ENTRY.
DIFFUSER
LENGTH
2
3
4
AIR
DIFFUSER
LENGTH
20"
27"
40"
5. ALL SUPPLY DIFFUSERS INCLUDE PLENUM, INSULATION
(WHEN SPECIFIED) AND DUCT CONNECTION.
6. INSULATION IS U.L. LISTED AND MEETS NFPA 90A AND
U.L. 181.
7. STANDARD DIFFUSER LENGTHS ARE STATED. ACTUAL
LENGTH WILL VARY WITH LIGHT MANUFACTURER. TO
INSURE COMPATIBILITY, LIST LIGHT MANUFACTURER
AND MODEL NUMBER.
INLET
S5 - 5" SIDE INLET
S6 - 6" SIDE INLET
8. ALL DIMENSIONS ARE IN INCHES.
VAV-PRC008-EN D 23

Diffusers—
Light
Fixture
Dimensional
Data—
VLSD–DUAL
VLSD – DUAL
D 24
VAV-PRC008-EN

Diffusers—
Light
Fixture
Dimensional
Data—
VRLD–SNGL
VRLD – SNGL OPEN RETURNS
MOUNTING
BRACKET
(SHIPPED FLAT)
3 1 2
LENGTH
INTERNAL INSULATION
(OPTIONAL)
VOLUME DAMPER
ACCESSIBLE THROUGH
AIR SLOT - 4' MODELS
HAVE TWO INDIVIDUAL
DAMPERS
HOLD-DOWN TABS TO
ALIGN AND LOCK DIFFUSER
TO LIGHT FIXTURE AIR SLOT
(SHIPPED FLAT)
1 1
16
3
4
1 3 4
INSULATION
NONE - STEEL UNINSULATED
INT - STEEL WITH ½" INTERNAL MATTE FACED INSULATION
INSL - NONE
8 5 2
NOTES:
1. DIFFUSERS ARE AVAILABLE AS RETURN UNITS.
FOR REGRESSED OR FLUSH AIR HANDLING
LIGHT DIFFUSERS.
2. MATERIAL: GALVANNEALED STEEL EXPOSED
AREA PAINTED FLAT BLACK.
3. INSULATION IS U.L. LISTED AND MEETS NFPA 90A
AND U.L. 181.
4. HEIGHT: 3½" STANDARD. CEILING CLEARANCE
REQUIRED IS 3¾" PLUS AMOUNT LIGHT IS
REGRESSED ABOVE CEILING LINE.
5. STANDARD DIFFUSER LENGTHS ARE STATED. ACTUAL
LENGTH WILL VARY WITH LIGHT MANUFACTURER. TO
INSURE CMPATIBILITY, LIST LIGHT MANUFACTURER
AND MODEL NUMBER.
6. ALL DIMENSIONS ARE IN INCHES.
LENGTH
3
4
AIR
DIFFUSER
LENGTH
20"
27"
40"
VAV-PRC008-EN D 25

Diffusers—
Light
Fixture
Performance
Data—
VLSD
Style LITE Diffuser Performance
VLSD-SNGL
Side inlet–2'
Cfm 30 40 50 60 70 80 90 100
Throw-V 3–4 4–6 5–7 6–8 7–9 8–10 9–10 9–11
Throw-H 6–8 7–10 8–12 9–13 10–14 11–15 12–16 13–17
TSP-5" .04 .08 .13 .19 .25 .32 .41 50
TSP-6" .04 .08 .12 .18 .24 .31 .39 .48
NC (20) (20) 22 29 33 36 41 44
VLSD-SNGL
Side inlet–3'
Cfm 40 50 60 70 80 90 100 110
Throw-V 3–5 4–6 5–7 6–8 6–9 7–9 7–10 8–10
Throw-H 4–6 5–8 6–10 8–11 9–13 10–14 11–15 12–16
TSP-5" .04 .06 .09 .12 .17 .21 .27 .32
TSP-6" .04 .06 .08 .11 .15 .19 .24 .29
NC (20) (20) (20) 23 27 32 35 39
VLSD-SNGL
Side inlet–4'
Cfm 50 60 70 80 90 100 110 120
Throw-V 3–4 4–5 5–6 5–7 6–8 6–8 6–9 7–9
Throw-H 4–6 5–7 5–8 6–9 7–10 7–11 8–12 9–13
TSP-5" .04 .06 .08 .11 .15 .17 .21 .25
TSP-6" .04 .06 .08 .11 .14 .16 .20 .23
NC (20) (20) (20) 23 27 30 34 37
VLSD-DUAL
Top inlet–2’
CFM 50 60 70 80 90 100 110 120
Throw-V 3–5 4–6 5–7 5–8 6–8 6–9 7–9 7–10
Throw-H 2–4 4–8 6–10 7–10 7–11 8–11 8–12 9–13
TSP-5" .05 .07 .09 .12 .15 .18 .22 .26
TSP-6" .04 .06 .08 .10 .13 .16 .19 .23
NC (20) (20) (20) 22 26 31 33 36
VLSD-DUAL
Top inlet–3’
CFM 90 100 110 120 130 140 150 160
Throw-V 3–5 3–6 4–6 4–6 5–7 6–7 6–8 6–9
Throw-H 4–6 5–7 6–8 6–9 7–9 7–10 8–11 8–12
TSP-5" .08 .10 .12 .15 .18 .20 .23 .28
TSP-6" .08 .09 .11 .13 .16 .18 .20 .23
NC 20 23 26 28 32 33 34 37
VLSD-DUAL
Top inlet–4’
CFM 60 80 100 120 140 160 180 200
Throw-V 1–2 1–3 2–3 2–4 3–5 4–6 5–7 6–8
Throw-H 2–3 2–4 3–5 4–6 4–7 5–8 6–9 7–10
TSP-5" .03 .06 .09 .13 .17 .22 .28 .35
TSP-6" .03 .05 .08 .10 .14 .18 .23 .29
NC (20) (20) 21 24 31 33 37 41
VLSD-DUAL
Side Inlet–2'
Cfm 50 60 70 80 90 100 110 120
Throw-V 3–5 4–6 5–7 5–8 6–8 6–9 7–9 7–10
Throw-H 2–4 4–8 6–10 7–10 7–11 8–11 8–12 9–13
TSP-5" .05 .06 .08 .10 .13 .16 .19 .23
TSP-6" .04 .06 .08 .10 .12 .15 .18 .21
NC (20) (20) (20) 21 25 29 32 36
VLSD-DUAL
Side Inlet–3'
Cfm 90 100 110 120 130 140 150 160
Throw-V 3–5 3–6 4–6 4–6 5–7 6–7 6–8 6–9
Throw-H 4–6 5–7 6–8 6–9 7–9 7–10 8–11 8–12
TSP-5" .07 .08 .10 .12 .14 .17 .19 .22
TSP-6" .06 .07 .09 .11 .13 .15 .17 .19
NC (20) 20 23 25 29 30 33 34
VLSD-DUAL
Side Inlet–4'
Cfm 60 80 100 120 140 160 180 200
Throw-V 1–2 1–3 2–3 2–4 3–5 4–6 5–7 6–8
Throw-H 2–3 2–4 3–5 4–6 4–7 5–8 6–9 7–10
TSP-5" .02 .04 .07 .10 .13 .16 .21 .26
TSP-6" .02 .04 .06 .08 .11 .15 .19 .23
NC (20) (20) (20) 21 26 30 33 37
Projection - V and H are vertical and horizontal distance in feet to reach terminal velocities of 100 FPM and 50 FPM respectively.
TSP - Static pressure drop in in. wg across the diffuser with dampers full open and horizontal air projection.
NC - A one number evaluation of sound generation derived from sound power levels ( re: 10-12 watts) less 8 db room absorption. (20) indicates less than 20 NC rating.
Data shown is for one diffuser. Additional diffusers will tend to increase the NC value by perhaps 2 db each, depending on size, air quantity and distance from other
diffusers. Return applications will add +2 db to all values shown. Performance data is based on tests performed in accordance with ADC 1062 GRD-84 Test Code.
D 26
VAV-PRC008-EN

Diffusers—
Induction
Induction Diffusers
The features of the Induction Diffuser
are described by the product
categories shown in bold. Within each
category the options available are
listed.
Model
Number
Description
MODL
VLSD
DSEQ
A
TYPE
INDT
INDB
INCB
Model
Supply Diffuser
Design Sequence
A Design Sequence
Diffuser Type
Induction, Supply Only
Induction, Down Blow,
Supply Only
Induction, Down Blow,
Supply/Return
Induction, Supply/Return
Diffuser Length
INSR
LGTH
2 Diffuser Length - 2'
3 Diffuser Length - 3'
4 Diffuser Length - 4'
5 Diffuser Length - 5'
CEIL Ceiling Type
TBAR Tbar - 15/16”
2X2T Center Notch Grid - 15/16”
PLSR Plaster Ceiling
DMPR Damper Type
BAL Balancing Damper
VAV-PRC008-EN D 27

Diffusers—
Induction
INDT, INDB, INSR, INCB
Dimensional
Data—INDT,
INDB, INSR, INCB
SUPPLY DIFFUSER
SUPPLY DIFFUSER WITH DOWNBLOW
A
B
(INDT)
(INDB)
B
B
A
B
A
A
SUPPLY/RETURN DIFFUSER
SUPPLY/RETURN WITH DOWNBLOW
A
B
(INSR)
(INCB)
B B
A B A A
SUPPLY DIFFUSER
SUPPLY/RETURN DIFFUSER
Internal insulation
Internal insulation
INLET
SIZE
DIFFUSER
HEIGHT H
6
8
5
3
2 4
11
A=
16
11
A=
16
Vane Detail
(T-BAR by other)
3
8
13
2
16
7
8
3
8
7
8
5
5
16
2
1
2
Notes:
1. High induction horizontal air flow.
2. Center down blow option provides a veritcal air
pattern for exterior walls or glass. Adjustable
Blades for volume and direction control.
3. Supply/Return combination diffusers allow room air to
be returned to ceiling plenum.
4. Nominal lengths of 2', 3', 4', and 5'.
Actual length is nominal minus 1/4 inch.
5. Material: 24-gage galvannealed steel. All exposed
surfaces painted flat black.
6. All dimensions are in inches.
D 28
VAV-PRC008-EN

Diffusers—
Induction
Performance
Data—
INDUCT
Style INDUCT Diffuser Performance
Supply Slot Performance – INDT, INSR
2' Cfm 60 80 100 120 140 160 180 200
TSP .02 .03 .06 .08 .11 .14 .19 .23
Throw 13 16 19 22 24 25 26 29
NC (20) (20) (20) (20) (20) 22 26 29
3' Cfm 90 120 150 180 210 240 270 300
TSP .03 .04 .07 .10 .14 .18 .23 .29
Throw 13 16 20 22 24 26 27 29
NC (20) (20) (20) 22 25 29 32 35
4' Cfm 120 160 200 240 280 320 360 400
TSP .03 .05 .09 .12 .17 .22 .29 .36
Throw 11 14 17 19 21 23 24 25
NC (20) (20) 21 26 29 33 37 40
5' Cfm 150 200 250 300 350 400 450 500
TSP .03 .05 .10 .13 .18 .24 .31 .39
Throw 9 11 14 15 17 18 19 20
NC (20) 21 25 29 33 37 41 44
Supply Slot Performance with Down Blow– INDB, INCB
3' Cfm 90 120 150 180 210 240 270 300
TSP .03 .06 .09 .13 .18 .23 .29 .35
Throw H 11 16 19 22 24 26 27 29
Throw V 4 5 5 6 6 7 7 8
NC 20 25 31 35 40 43 45 48
4' Cfm 120 160 200 240 280 320 360 400
TSP .03 .06 .09 .13 .18 .23 .29 .36
Throw H 11 16 19 22 25 26 27 29
Throw V 4 5 5 6 6 7 7 8
NC (20) 24 30 33 39 42 45 48
5' Cfm 150 200 250 300 350 400 450 500
TSP .03 .06 .09 .14 .19 .24 .30 .38
Throw H 11 16 19 21 24 25 26 27
Throw V 4 5 5 6 6 7 7 8
NC (20) 24 30 33 38 42 44 47
Return Slot Performance – INSR, INCB
Cfm/Ft 30 40 50 60 70 80 90 100
Neg. SP .01 .02 .03 .04 .06 .07 .09 .11
TSP - Static pressure readings in in. wg.
Throw - Horizontal distance in feet to reach terminal velocity, VT, of 50 FPM.
Vertical throw values are based on standard 12" long down blow slot and 3/8"
width setting.
NC - A one number evaluation of sound generation derived from sound power
levels (re: 10-12 watts) less 8 db room absorption. (20) indicates less than 20 NC
rating. Data shown is for one diffuser. Additional diffusers will tend to increase
the NC value by perhaps 2 db each, depending on size, air quantity and distance
from other diffusers. Return applications will add +2 db to all valves shown.
Performance data is based on tests performed in accordance with ADC 1062
GRD-84 Test Code.
VAV-PRC008-EN D 29

Diffusers—
Perforated
Model
Number
Description
Perforated Diffusers
The features of the Perforated Diffuser are described by the product categories
shown in bold. Within each category the options available are listed.
MODL
VLSD
VLRD
DSEQ
A
DEFL
ADJ
DISC
NONE
TYPE
PERF
Model
Supply Diffuser
Return Diffuser
Design Sequence
A Design Sequence
Deflector
Adjustable Deflector
Disc Deflector
No Deflector
Diffuser Type
Perforated Diffuser
CEIL Ceiling Type
TBAR T-bar – 15/16"
T916 Narrow Faced Grid – 9/16"
D916 Narrow Regressed Grid – 9/16"
INLT Inlet Size And Location
6 6" Round Inlet, Top
8 8" Round Inlet, Top
10 10" Round Inlet, Top
12 12" Round Inlet, Top
14 14" Round Inlet, Top
DMPR Damper Type
BFLY Butterfly Damper
D 30
VAV-PRC008-EN

Diffusers—
Perforated
Dimensional
Data—
PERF
PERF
BUTTERFLY DAMPER
(OPTIONAL FOR VLSD ONLY)
1½
16 T-BARS
DISC OR ADJUSTABLE DEFLECTOR
(FOR VLSD ONLY)
24" CENTERS
DEFL
ADJ
DISC DEFLECTOR (VLSD ONLY)
ADJUSTABLE DEFLECTOR (VLSD ONLY)
NO DEFLECTOR (VLRD ONLY)
INLT
6
8
12
14
6" TOP INLET
8" TOP INLET
12" TOP INLET
14" TOP INLET
NOTES:
1. COMPLETELY ASSEMBLED FOR EASY LAY-IN INSTALLATION.
2. 22-GAGE PERFORATED STEEL FACE WITH WHITE FINISH
AND 51% OPEN AREA.
3. 24-GAGE STEEL PLENUM WITH BLACK INTERIOR. THE
FACE FOR LEFT, RIGHT, OR VERTICAL THROW.
4. ROUND INLET SIZES 6" THROUGH 14".
5. AVAILABLE WITH DISC OR ADJUSTABLE DEFLECTOR.
6. ALL DIMENSIONS ARE IN INCHES.
VAV-PRC008-EN D 31

Diffusers—
Perforated
Performance
Data—
PERF
Table 1 - Style PERF Diffuser Performance
24 x 24 Nominal size
Inlet Size
6 Cfm 60 80 100 120 135 158 176 195 234
TSP .01 .01 .02 .03 .04 .05 .06 .08 .12
Throw 1 2 3 3 4 4 5 5 6
NC — — — 20 21 23 27 30 35
8 Cfm 104 139 175 210 245 280 315 350 420
TSP .01 .02 .03 .04 .05 .06 .08 .10 .14
Throw 2 3 4 4 5 6 7 7 8
NC — — — 20 26 29 33 35 40
10 Cfm 165 220 275 325 380 435 490 545 650
TSP .01 .02 .03 .04 .06 .08 .10 .12 .18
Throw 2 4 5 5 6 7 8 8 9
NC — — 20 24 29 33 36 39 44
12 Cfm 240 315 395 475 550 630 710 785 945
TSP .01 .02 .04 .05 .07 .09 .12 .14 .20
Throw 3 4 5 6 7 9 9 10 11
NC — — 22 28 32 36 39 42 49
14 Cfm 320 430 536 640 747 856 960 1070 1281
TSP .01 .02 .04 .06 .08 .10 .13 .16 .23
Throw 3 5 6 7 8 10 10 11 12
NC — 20 25 30 36 39 42 45 50
TSP - Total pressure readings in in. wg across diffuser.
Throw - Horizontal distances in feet to reach terminal velocity, VT, of 50 FPM.
NC - A one number evaluation of sound generation derived from sound power levels (re:
10-12 watts) less 10 db room absorption. (20) indicates less than 20 NC rating. Data shown
is for one diffuser. Additional diffusers will tend to increase the NC value by perhaps 2 db
each, depending on size, air quantity and distance from other diffusers. Return applications
will add +2 db to all valves shown. Performance data is based on tests performed at Donco
Air Products and ETL Laboratories in accordance with ADC 1062 GRD-84 Test Code.
D 32
VAV-PRC008-EN

Diffusers
Mechanical
Specifications
MODEL VLSD and VLRD
Supply and Return Diffusers.
LINR
1. General Casing—This diffuser is
constructed of 24-gage
galvannealed steel. Hanger holes
on each end of the diffuser for
installation are optional. Slot edges
formed over; provide double
thickness tile support as an integral
part of the diffuser housing. All
exposed surfaces are finished with
white enamel.
2. Insulation—The interior surface of
the diffuser casing is acousticallyand
thermally-lined with ½-inch
(13 mm) 1.9 lb cu ft (30.4 kgs/cu m),
R-Value of 2.1 density glass fiber
with high-density facing. The
insulation is UL listed and meets
NFPA-90A and UL 181 standards.
3. T-Bar Ceiling—This diffuser is
designed to install over the “T” of
most standard exposed suspended
ceilings. The end angle is provided
to allow the slot to fit flush with the
bottom of the “T” and ceiling tile.
4. 2x2 T-Bar Ceiling—This diffuser is
designed to install over the “T” of
most standard exposed suspended
ceilings. The notch is provided in
the middle of the unit to allow the
diffuser to set over the “T” located
at the middle point.
5. Concealed Spline Ceiling—The
diffuser is designed to sit in the
center of the module, parallel to the
main ceiling support member. The
ceiling tile rests on the edge of the
discharge slot and the flange. A
t-bar insert is provided in the center
of a two-way throw diffuser, when
applicable.
6. Plaster Ceiling—The diffuser is
designed to sit into the opening in
the plaster. The diffuser must be
used in conjunction with a trim
frame for a finished appearance.
7. Trim Frame—The trim frame is
extruded aluminum and designed
to attach to the diffuser slot(s) with
clips. The trim frame is finished with
white enamel and is designed to
set into the opening of a plaster
ceiling for a finished appearance.
8. Fire Damper—An integral fusible
link, 22-gage factory installed fire
damper. The fusible link has a
melting point of 158°F (70°C).
9. Inlet Balancing Damper—A
factory-provided and -installed
single-blade damper, with a
position-locating handle for
balancing air.
10. Inlet—The inlet connection is sized
to fit standard, round, flexible
ductwork.
11. Agency Listing—UL listed as
environmental air terminal unit.
Control #419X (1- and 2-slot only).
FAPF, VAPF, VAPS, AABD
1. General Casing—This diffuser is
constructed of 24-gage
galvannealed steel. All exposed
surfaces of the diffuser are finished
with flat black enamel. Factoryinstalled
t-bars are finished with
white enamel.
2. Insulation—The interior surface of
the supply diffuser casing is
acoustically- and thermally-lined
with ½-inch (13 mm) 1.9 lb/cu ft
(30.4 kg/cu m), R-Value of
2.1 density glass fiber with highdensity
facing. The insulation is UL
listed and meets NFPA-90A and
UL 181 standards.
3. T-Bar Ceiling—This diffuser is
designed to install over the “T” of
most standard exposed suspended
ceilings. The end angle is provided
to allow the slot to fit flush with the
bottom of the “T” and ceiling tile.
4. 2x2 T-Bar Ceiling—This diffuser is
designed to install over the “T” of
most standard exposed suspended
ceilings. The notch is provided in
the middle of the unit to allow the
diffuser to set over the “T” located
at the middle point.
5. Plaster Ceiling—The diffuser is
designed to set into the opening in
the plaster. The diffuser must be
used in conjunction with a trim
frame for a finished appearance.
The trim frame is extruded
aluminum with white finish.
6. Inlet Balancing Damper—A
factory-provided and -installed
single-blade damper, with a
position-locating handle for
balancing air.
7. Inlet – The inlet connection is sized
to fit standard, round, flexible
ductwork.
INDT
1. General Casing – This diffuser
is constructed of 24-gage
galvannealed steel. Exposed
surfaces are finished with flat
black enamel.
2. Insulation – The interior surface of
the diffuser casing is acousticallyand
thermally-lined with ½-inch
(13 mm) 1.9 lb cu ft (30.4 kgs/cu m),
R-Value of 2.1 density glass fiber
with high-density facing. The
insulation is UL listed and meets
NFPA-90A and UL 181 standards.
3. T-Bar Ceiling—This diffuser is
designed to install over the “T”
of most standard exposed
suspended ceilings.
4. 2x2 T-Bar Ceiling—This diffuser is
designed to install over the “T” of
most standard exposed suspended
ceilings. The notch is provided in
the middle of the unit to allow the
diffuser to set over the “T” located
at the middle point.
5. Plaster Ceiling—The diffuser is
designed to set into the opening in
the plaster. The diffuser must be
used in conjunction with a trim
frame, for a finished appearance.
The trim frame is extruded
aluminum and designed to attach
to the diffuser slot with clips. The
trim frame is finished with white
enamel.
6. Inlet Balancing Damper—A
factory-provided and -installed
single-blade damper, with a
position-locating handle for
balancing air.
7. Inlet—The inlet connection is sized
to fit standard, round, flexible
ductwork.
LITE
1. General Casing—This diffuser is
constructed of 24-gage
galvannealed steel. Hold-down tabs
on the diffuser ends are provided to
align and lock the diffuser to the
light air slot. Exposed slot area is
painted flat black.
2. Insulation—Optional. If used, the
interior surface of the diffuser
casing is acoustically and thermally
lined with ½ inch (13 mm) 1.9 lb cu
ft (30.4 kgs/cu m), R-Value of 2.1
density glass fiber with highdensity
facing. The insulation is UL
listed and meets NFPA-90A and
UL 181 standards. The external
insulation is foil-faced.
3. Dual Side Diffuser—This diffuser
is designed for dual-side
installation on the light fixture.
4. Single Side Diffuser—This
diffuser is designed for single-side
installation on the light fixture. A
side bracket is provided for extra
support.
5. Inlet—The inlet connection is sized
to fit standard, round, flexible
ductwork.
VAV-PRC008-EN D 33

Diffusers—
Perforated
Mechanical
Specifications
PERF
1. General Casing—This diffuser
plenum is constructed of 24-gage
galvannealed steel with black
interior. The diffuser face is 22-gage
perforated steel with a white finish
and 51% open area.
2. Adjustable Deflector—A set of
four square louver-type deflectors
attached to the backside of the
perforated panel, directly below the
inlet collar. Each deflector pivots to
allow for one-, two-, three-, and
four-way horizontal air patterns.
Factory-set at a four-way air pattern.
3. Disc Deflector—A round disc
attached to the backside of the
perforated panel, directly below the
inlet collar to deflect the air in a
360° horizontal air pattern.
4. T-Bar Ceiling—This diffuser is
designed for easy lay-in installation
in the suspended T-bar ceiling grid.
5. Butterfly Damper—A two-bladed
volume damper located in the inlet
collar. Adjustments are made
through the perforated metal with
a screwdriver.
6. Inlet – The inlet connection is sized
to fit standard, round, flexible
ductwork.
D 34
VAV-PRC008-EN

Index
by Nomenclature
A
AABD .....................................................................................D 2, D 12, D 20–21, D 33
D
DD00 ...................................................................................................... C 2, C 7, C 48
DD01. ............................................................................ C 2, C 9, C 12, C 14, C 16, C 48
DD02 .................................................................................. C 2, C 9–10, C 15–16, C 48
DD03 .................................................................................. C 2, C 9–10, C 15–16, C 48
DD04 ............................................................................ C 2, C 9, C 11, C 14, C 16, C 48
DD05 ............................................................................ C 2, C 9, C 11, C 14, C 16, C 48
DD07 .................................................................................. C 2, C 9–10, C 15–16, C 48
DD08 ................................................................................................... C 2, C 13, C 48
DUAL ................................................................................................. D 22, D 24, D 26
E
EI05 .............................................................................................. C 25–26, C 28, C 49
EI28 .................................................................................................... C 25, C 27, C 49
EI29 .................................................................................................... C 25, C 27, C 49
EI71 ................................................................................................... C 25, C 29, C 49
ENON ..................................................................................................... C 2, C 48–49
F
FAPF ............................................................................................... D 3, D 16–19, D 33
FM00 ..................................................................................................... C 2, C 8, C 48
FM01 .................................................................................................... C 2, C 8, C 48
I
INCB ....................................................................................................... D 3, D 27–29
INDB ....................................................................................................... D 3, D 27–29
INDT .............................................................................................. D 3, D 27–29, D 33
INSR ....................................................................................................... D 3, D 27–29
L
LINR......................................................................................................... D 2–11, D 33
LITE ............................................................................................... D 3, D 22–26, D 33
LPCF ............................................................................................................ LHP 1–21
LPEF ............................................................................................................ LHP 1–21
LPWF ........................................................................................................... LHP 1–21
LSCF ............................................................................................................ LHP 1–24
LSEF ............................................................................................................ LHP 1–24
LSWF ........................................................................................................... LHP 1–24
VAV-PRC008-EN
IBN i

Index
by Nomenclature
P
PERF .............................................................................................. D 3, D 30–32, D 34
PC00 ...................................................................................................... C 32–33, C 50
PC03 .................................................................................................. C 32, C 39, C 50
PC04 ...................................................................................................... C 32–33, C 50
PC05 ................................................................................................... C 32, C 37, C 50
PN00.................................................................................... C 32, C 36, C 40–41, C 50
PN04 .................................................................................................. C 32, C 36, C 50
PN05 .................................................................................... C 32, C 34, C 41–42, C 50
PN08 .................................................................................................. C 32, C 38, C 50
PN09 .................................................................................................. C 32, C 38, C 50
PN10 .................................................................................................. C 32, C 39, C 50
PN11 .................................................................................................. C 32, C 34, C 50
PN32 .................................................................................................. C 32, C 35, C 50
PN34 .................................................................................................. C 32, C 35, C 50
PN51 ............................................................................................. C 32, C 43–44, C 50
PN52 ............................................................................................. C 32, C 44–45, C 50
S
SNGL .................................................................................................... D 23–23, D 25
V
VAPF .............................................................................................. D 3, D 12–14, D 33
VAPS ........................................................................................... D 3, D 12, D15, D 33
VCCF .............................................................................................................. SD 1–30
VCEF .............................................................................................................. SD 1–30
VCWF ............................................................................................................ SD 1–30
VDDF .............................................................................................................DD 1–15
VLRD .......................................................................................................... D 22, D 25
VLSD .................................................................................................... D 22–24, D 26
VPCF ............................................................................................................ FPP 1–44
VPEF ............................................................................................................ FPP 1–44
VPWF .......................................................................................................... FPP 1–44
VSCF ........................................................................................................... FPS 1–45
VSEF ............................................................................................................ FPS 1–45
VSWF .......................................................................................................... FPS 1–45
IBN ii
VAV-PRC008-EN

Index
by Section
Features and Benefits ......................................................................... FB 1–5
Energy Efficiency ................................................................................................. FB 1
Unit Construction ........................................................................................... FB 2 – 3
Indoor Air Quality (IAQ) ....................................................................................... FB 3
Integrated Comfort Systems (ICS) ................................................................... FB 3–4
Factory-Installed vs. Factory-Commissioned ........................................................ FB 4
Advanced Control Sequences .............................................................................. FB 5
Application Considerations ............................................................ AC 1–23
VAV Systems ................................................................................................... AC 2–4
Single-Duct Terminal
Dual-Duct Terminal
Parallel Fan-Powered Terminal
Series Fan-Powered Terminal
Low-Height Parallel Fan-Powered Terminal
Low-Height Series Fan-Powered Terminal
Parallel vs. Series ................................................................................................ AC 5
Low-Temperature Air ....................................................................................... AC 6–7
Energy Savings and System Control .................................................................. AC 8
ECM
Fan Pressure Optimization
Ventilation Reset
Agency Certifications .......................................................................................... AC 9
ARI 880-98
ARI 885-98
UL 1995
Control Types ............................................................................................... AC 10–12
Direct Digital Controls (DDC)
Analog Electronic
Pneumatic
Flow Measurement and Control .................................................................. AC 13–14
Flow Ring
Elevation Effects
Reheat Option ................................................................................................... AC 15
Hot Water Reheat and Valves (Cv)
Electric Reheat (kW)
Insulation .......................................................................................................... AC 16
Metal Encapsulated Edges
Matte-Faced
Foil-Faced
Double-Wall
Closed-Cell
Acoustics ..................................................................................................... AC 17–18
Duct Design .......................................................................................................AC 19
Equal Friction
Static Regain
Selection Program ............................................................................................ AC 20
TOPSS Selection Program
VariTrane Quick Select
Best Practices .................................................................................................... AC 21
Unit Conversions .............................................................................................. AC 22
Additional References ....................................................................................... AC 23
Single-Duct Terminal Units –
Models VCCF, VCWF, VCEF ............................................................... SD 1–30
Service Model Number Description .................................................................SD 2–3
Selection Procedure .........................................................................................SD 4–5
General Data
Valve/Controller Airflow Guidelines ................................................................ SD 6
Performance Data
Air Pressure Requirements ..........................................................................SD 7–9
VCWF Hot Water Coil ............................................................................... SD 10–15
VCEF Electric Coil .................................................................................... SD 16–17
VAV-PRC008-EN
IBS i

Index
by Section
Acoustics
VCCF ..................................................................................................... SD 18–21
Dimensional Data
VCCF Dimensions ........................................................................................ SD 22
VCWF Dimensions ....................................................................................... SD 23
Hot Water 1-Row Coil Connections ............................................................... SD 24
Hot Water 2-Row Coil Connections ............................................................... SD 25
VCEF Dimensions ......................................................................................... SD 26
VCEF (Right-hand) Dimensions .................................................................... SD 27
Mechanical Specifications
VCCF, VCWF, VCEF .................................................................................... SD 28–30
Dual-Duct Terminal Units –
Models VDDF ........................................................................................DD 1–15
Service Model Number Description .................................................................... DD 2
Selection Procedure ........................................................................................ DD 3–4
General Data
Valve/Controller Airflow Guidelines ................................................................ DD 5
Performance Data
Air Pressure Requirements ......................................................................... DD 6–7
Acoustics ................................................................................................... DD 8–11
Dimensional Data
VDDF Dimensions ................................................................................... DD 12–13
Mechanical Specifications
VDDF ....................................................................................................... DD 14–15
Parallel Fan-Powered Terminal Units –
Models VPCF, VPWF, VPEF ............................................................. FPP 1–37
Service Model Number Description ................................................................... FPP 2
Selection Procedure ....................................................................................... FPP 3–5
General Data
Valve/Controller Airflow Guidelines ............................................................... FPP 6
Performance Data
Air Pressure Requirements ........................................................................ FPP 7–8
Fan Curves .............................................................................................. FPP 9–12
Hot Water Coil ........................................................................................FPP 13–16
Electrical Data ........................................................................................ FPP 17–19
Acoustics ............................................................................................... FPP 20–25
Dimensional Data
VPCF Dimensions ........................................................................................ FPP 26
VPWF Dimensions ...................................................................................... FPP 27
VPWF on DIscharge Dimensions ................................................................. FPP 28
Hot Water 1-Row Coil Connections .............................................................. FPP 29
Hot Water 2-Row Coil Connections .............................................................. FPP 30
Hot Water Discharge 1-Row Connections .................................................... FPP 31
Hot Water Discharge 2-Row Connections .................................................... FPP 32
VPEF Dimensions ........................................................................................ FPP 33
Enclosure Details ......................................................................................... FPP 34
Mechanical Specifications
VPCF, VPWF, VPEF .................................................................................. FPP 35–37
Series Fan-Powered Terminal Units –
Models VSCF, VSWF, VSEF ............................................................ FPS 1–40
Service Model Number Description ...................................................................FPS 2
Selection Procedure ....................................................................................... FPS 3–5
General Data
Valve/Controller Airflow Guidelines ...............................................................FPS 6
Performance Data
Air Pressure Requirements ........................................................................ FPS 7–8
Fan Curves .............................................................................................. FPS 9–12
Hot Water Coil ....................................................................................... FPS 13–16
Electrical Data ........................................................................................FPS 17–19
Acoustics ............................................................................................... FPS 20–25
IBS ii
VAV-PRC008-EN

Index
by Section
Dimensional Data
VSCF Dimensions .................................................................................. FPS 26-29
VSWF Dimensions ................................................................................. FPS 30-33
Hot Water 1-Row Coil Connections .............................................................. FPS 34
Hot Water 2-Row Coil Connections .............................................................. FPS 35
VSEF Dimensions ................................................................................... FPS 36-37
Mechanical Specifications
VSCF, VSWF, VSEF .................................................................................. FPS 38–40
Low-Height Parallel Fan-Powered Terminal Units –
Models LPCF, LPWF, LPEF .............................................................. LHP 1–29
Service Model Number Description ............................................................... LHP 2–3
General Data
Valve/Controller Airflow Guidelines .............................................................. LHP 4
Performance Data
Air Pressure Requirements ........................................................................ LHP 5–6
Fan Curves ................................................................................................ LHP 7–8
Hot Water Coil ......................................................................................... LHP 9–10
Electrical Data ............................................................................................. LHP 11
Acoustics ............................................................................................... LHP 12–15
Dimensional Data
LPCF Dimensions .................................................................................. LHP 16–18
LPWF Dimensions ................................................................................. LHP 19–22
Hot Water 1-Row Coil Connections (10SQ) ...................................................LHP 23
Hot Water 2-Row Coil Connections (10SQ) ..................................................LHP 24
LPEF Dimensions .................................................................................. LHP 25–26
Mechanical Specifications
LPCF, LPWF, LPEF .................................................................................... LHP27–29
Low-Height Series Fan-Powered Terminal Units –
Models LSCF, LSWF, LSEF ............................................................. LHS 1–27
Service Model Number Description ............................................................... LHS 2–3
General Data
Valve/Controller Airflow Guidelines .............................................................. LHS 4
Performance Data
Air Pressure Requirements ........................................................................ LHS 5–6
Fan Curves ................................................................................................ LHS 7–8
Hot Water Coil ......................................................................................... LHS 9–10
Electrical Data ....................................................................................... LHS 11–12
Acoustics ............................................................................................... LHS 13–16
Dimensional Data
LSCF Dimensions .................................................................................. LHS 17–18
LSWF Dimensions ................................................................................. LHS 19–20
Hot Water 1-Row Coil Connections ............................................................. LHS 21
Hot Water 2-Row Coil Connections ............................................................. LHS 22
LSEF Dimensions .................................................................................. LHS 23–24
Mechanical Specifications
LSCF, LSWF, LSEF .................................................................................. LHS 25–27
VAV-PRC008-EN
IBS iii

Index
by Section
VariTrane Controls ................................................................................ C 1–67
Direct Digital Controls
Options .............................................................................................................C 3
General Logic ....................................................................................................C 4
DDC Reheat Control ...................................................................................... C 5–7
Control Drawings ........................................................................................ C 8–17
Accessories
Direct Digital Controller/UCM ..................................................................... C 18
Wireless Receiver/Wireless Zone Sensor .................................................... C 19
DDC Zone Sensor ....................................................................................... C 19
CO 2
Wall Sensor .......................................................................................... C 20
Duct CO 2
Sensor ......................................................................................... C 20
DDC Zone Sensor with LCD ........................................................................ C 20
Zone Occupancy Sensor ............................................................................ C 21
Auxiliary Temperature Sensor ..................................................................... C 21
Control Relay .............................................................................................. C 21
Two-Position Water Valve ............................................................................ C 22
Proportional Water Valve ............................................................................. C 22
Differential Pressure Transducer ................................................................. C 23
Transformers .............................................................................................. C 23
Trane Actuator – 90 Second Drive Time ...................................................... C 24
DDC Retrofit Kit .......................................................................................... C 24
Retrofit Kit Actuator – Variable Drive Time ................................................... C 25
LonMark DDC VAV Controller
Introduction ..................................................................................................... C 26
Options ........................................................................................................... C 27
Features & Benefits ................................................................................... C 28–29
Controller Logic ......................................................................................... C 30–32
Ventilation Control ........................................................................................... C 33
Flow Tracking ................................................................................................... C 34
Control Drawings ...................................................................................... C 35–38
Accessories ..................................................................................................... C 39
Data Lists ........................................................................................................ C 40
Analog Controls
Options ........................................................................................................... C 41
Control Drawings ...................................................................................... C 42–45
Accessories
Analog Electronic Controller ....................................................................... C 46
Trane Actuator – 90 Second Drive Time ...................................................... C 46
Analog Electronic Sensor ........................................................................... C 47
Static Pressure Controller ........................................................................... C 47
Pneumatic Controls
Options ........................................................................................................... C 48
Control Drawings ...................................................................................... C 49–61
Accessories
3011 Pneumtic Volume Regulator ............................................................... C 62
3501 Pneumatic Volume Regulator ............................................................. C 62
Pneumatic Damper Actuator ...................................................................... C 63
Reversing Relay .......................................................................................... C 63
Signal Limiter ............................................................................................. C 63
Mechanical Specifications ............................................................................. C 64–67
IBS iv
VAV-PRC008-EN

Index
by Section
Diffusers .................................................................................................... D 1–34
Introduction ....................................................................................................... D 1–3
Linear Slot Diffusers (LINR)
Model Number Description .............................................................................. D 4
Ceiling System Cross Reference ....................................................................... D 5
Dimensional Data .......................................................................................... D 6–9
Inlet Availability ............................................................................................... D 10
Performance Data ........................................................................................... D 11
Adjustable Flow Diffusers (VAPF, VAPS, FAPF, AABD)
Model Number Description .............................................................................D 12
Dimensional Data (VAPF) ................................................................................D 13
Performance Data (VAPF) ................................................................................ D 14
Dimensional Data (VAPS) ................................................................................D 15
Dimensiona Data (FAPF) ........................................................................... D 16–17
Performance Data (FAPF) .......................................................................... D 18–19
Dimensional Data (AABD) .............................................................................. D 20
Performance Data (AABD) .............................................................................. D 21
Light Diffusers (SNGL, DUAL)
Model Number Description ............................................................................ D 22
Dimensional Data ...................................................................................... D 23–25
Performance Data (VLSD) .............................................................................. D 26
Induction Diffusers (INDT, INDB, INCB, INSR)
Model Number Description ............................................................................ D 27
Dimensional Data ........................................................................................... D 28
Performance Data .......................................................................................... D 29
Perforated Diffusers (PERF)
Model Number Description ............................................................................ D 30
Dimensional Data ........................................................................................... D 31
Performance Data .......................................................................................... D 32
Mechanical Specifications .............................................................................. D 33–34
Index by Nomenclature ........................................................................ IBN i–ii
Index by Section ..................................................................................... IBS i–v
VAV-PRC008-EN
IBS v

Trane
A business of American Standard Companies
www.trane.com
For more information contact your local district office
or e-mail us at comfort@trane.com
Literature Order Number
File Number
Supersedes
VAV-PRC008-EN
PL-TD-VAV-000-VAV-PRC008-EN-0506
PL-TD-VAV-000-VAV-PRC008-EN-0306
Stocking Location Electronic Only/Last Print is 2004
Trane has a policy of continuous product and product data improvement and reserves the right to change
design and specifications without notice.