CDHF-SVN01B-EN (01/05: Installation - Duplex Water-Cooled - Trane

Installation
Duplex Water-Cooled
Hermetic CenTraVac With
CH530 Controller
Cooling Only
Direct Drive with CH530 Control Panel
X39640669020
CDHF-SVN01B-EN

Warnings and
Cautions
Warnings and Cautions
Notice that warnings and cautions
appear at appropriate intervals
throughout this manual. Warnings
are provided to alert installing
contractors to potential hazards that
could result in personal injury or
death, while cautions are designed
to alert personnel to conditions that
could result in equipment damage.
Your personal safety and the proper
operation of this machine depend
upon the strict observance of these
precautions.
NOTICE:
Warnings and Cautions appear at appropriate sections throughout this manual.
Read these carefully.
����� WARNING – Indicates a potentially hazardous situation which, if not avoided, could result in
death or serious injury.
����� CAUTION – Indicates a potentially hazardous situation which, if not avoided, may result in
minor or moderate injury. It may also be used to alert against unsafe practices.
CAUTION – Indicates a situation that may result in equipment or property-damage-only accidents.
© 2005 American Standard Inc. All rights reserved. CDHF-SVN01B-EN

CDHF-SVN01B-EN
Contents
Warnings and Cautions
General Information
Water Piping
Vent Line Piping
Insulation
Electrical Information
Trane Supplied Starter
Customer Supplied Starter
Line Power Supply
PFCC
PFCC and Unit Mounted Starters
Remote Starter
Starter to UCP Control Wiring
Control Circuit Wiring
System Control Wiring
Wiring Diagrams
3
2
4
25
35
41
43
44
45
47
48
50
51
53
54
56
59

4
General Information
About this Manual
Original date of manual:
This manual contains information
regarding installation of Models
CDHF 60 Hz and CDHG 50 Hz chillers
equipped with Tracer CH530
controller. Reference is made to the
CDHF. All installation procedures
described for the CDHF apply also to
the CDHG. By carefully reviewing the
information in this manual and
following the instructions given
along with the submittal package
provided for the unit will assure that
the chiller is installed correctly.
Product Description Block
Trane 60 Hz. Model CDHF hermetic
CenTraVac units are defined by the
product definition and selection
system (PDS). Each unit is defined by
the product description block which
appears on the unit nameplate. An
explanation of the PDS product code
is provided in the unit operation and
maintenance literature.
CDHF-SVN01B-EN

CDHF-SVN01B-EN
General Information
Commonly Used Acronyms
ASME = American Society of
Mechanical Engineers
ASHRAE = American Society of
Heating, Refrigerant and Air
Conditioning Engineers
BAS = Building Automation System
LBU = La Crosse Business Unit
CABS = Auxiliary Condenser Tube-
Bundle Size
CDBS = Condenser Bundle Size
CDSZ = Condenser Shell Size
CWR = Chilled Water Reset
DTFL = Delta-T at Full Load (i.e., the
difference between entering and
leaving chilled water temperatures at
design load)
EVBS = Evaporator Bundle Size
EVSZ = Evaporator Shell Size
GPM = Gallons-per-Minute
HVAC = Heating, Ventilating, and Air
Conditioning
IE = Internally Enhanced Tubes
IPC = Interprocessor Communication
PFCC = Power Factor Correction
Capacitor
PSID = Pounds-per-Square-Inch
(differential pressure)
PSIG = Pounds-per-Square-Inch
(gauge pressure)
UCP = Chiller Control Panel
CH530 = Tracer CH530 Chiller
Controller
Warnings and Cautions
Notice that WARNINGS and
CAUTIONS appear at appropriate
intervals throughout this manual.
WARNINGS are provided to alert
installing contractors to potential
hazards that could result in personal
injury or death, while CAUTIONS are
designed to alert personnel to
conditions that could result in
equipment damage.
Your personal safety and the proper
installation of this machine depend
upon the strict observance of these
precautions.
Unit Nameplate
The CDHF unit nameplate is located
on the left side of the left hand unit
control panel (UCP). A typical unit
nameplate is illustrated in Figure 1.
The following information is
provided on the CDHF unit
nameplate.
- Unit model and size descriptor
- Unit serial number
- Unit electrical requirements
- Correct operating charge and type
of refrigerant.
- Unit test pressures and maximum
operating pressures
- Unit Installation and Operation and
Maintenance manuals
- Product description block (identifies
all unit components and unit
“design sequence” used to order
literature and make other inquiries
about the unit).
Metric Conversion
The following conversions apply for
tables and charts in this manual,
In. x 2.54 = cm
Ft. x 30.48 = cm.
Lb. x .453 = kg.
5

6
General Information
Figure 1 – Information from a Typical CDHF Unit Nameplate
MODEL: CDHF2000 DATE OF MFG (DD/MM/YY): @TODAY05
MODEL NO:
CDHF2000KR0TA2802745B0A106B0A1CFFRR10W4C0010330001S
SERIAL NO: S.O. NO: SAMPLE
RATED VOLTAGE: 4160 VOLTS 60 HZ 3 PH
VOLTAGE UTILIZATION RANGE: 3744-4576 VAC
LH CIRCUIT RH CIRCUIT
MINIMUM CIRCUIT AMPACITY: 96 AMPS 103 AMPS
MAXIMUM OVERCURRENT
PROTECTIVE DEVICE: 150 AMPS 175 AMPS
COMPRESSOR MOTOR MAX
VOLTS-AC HZ PH RLA KW LRAY
LH CIRCUIT 4160 60 3 75 480 400
RH CIRCUIT 4160 60 3 82 523 473
VOLT HZ PH
OIL TANK HEATER (LH&RH): 115 60 1 750 WATTS
CONTROL CIRCUIT (LH&RH): 115 60 1 4000 VA MAX
CARBON TANK HEATER (LH&RH):115 60 1 1.7 RLA
PUMPOUT COMPRESSOR(LH&RH): 115 60/50 1 1.55 RLA
PURGE COMP MTR(LH&RH): 115/110 60/50 1 8RLA 34.6LRA
WHEN MOTOR CONTROLLER PROVIDED BY OTHERS
TRANE ENGINEERING SPEC. S6516-0513 APPLIES
REFRIGERANT SYSTEM LH RH
FIELD CHARGED WITH: 1850 1850 LBS. OF R-123
ACTUALLY CHARGED WITH: LBS. OF R-123
MAXIMUM WORKING PRESSURE: 15 15 PSIG HIGH SIDE
MAXIMUM WORKING PRESSURE: 15 15 PSIG LOW SIDE
FACTORY TEST PRESSURE:
HIGH SIDE 45 PSIG LOW SIDE 45 PSIG
FIELD LEAK TEST PRESSURE 8 PSIG MAX.
TESTED AT PSIG
MANUFACTURED UNDER ONE OR MORE OF THE FOLLOWING
U.S. PATENTS: 4232533 4686834 4689967 4715190
4751653 4800732 5031410 5056032 5058031 5355691
5434738 5537830 5553997 5563489 5600960 5675978
5836382 5848538 6065297 6098422 6250101
SERVICE LITERATURE
INSTALLATION MANUAL: CDHF-SVN01A-EN
OPERATION/MAINTENANCE MANUAL: CDHF-SVU01A-EN
PRODUCT DESCRIPTION:
TVSQ 1 PTON 1975 VTR1 165 VTR2 165
CTM1 75 CTM2 100 MAC1 6 MAC2 6
MODL CDHF DSEQ R0 NTON 2000 VOLT 4160
HRTZ 60 CPM1 512 CPD1 280 CPM2 588
CPD2 274 EVSZ 210D EVBS 1850 EVTM TECU
EVTH 35 EFLD WATE EVWT MAR EVWP 1
EVWC STD EVPR 150 EVCO VICT EVWA RRLR
CDSZ 210D CDBS 1900 CDTM TECU CDTH 35
CFLD WATE CDWT MAR CDWP 1 CDWC STD
CDPR 150 CDCO VICT CDWA LFRF ORC1 1265
ORC2 1265 AGLT UL TEST CWSP TTOL SPCL
WCNM BNMP CNIF CH53 OPST YES WPSR WFC
TRMM TRM4 EPRO YES CDRP YES SPKG DOM
ASCL OUTS APTY STD SRT1 CXL SRT2 CXL
SOPT 3RTD GENR NO
CDHF-SVN01B-EN

Responsibilities of Installing
Contractors
For your convenience, a summary of
the contractor responsibilities
typically associated with the chiller
installation process is provided
below. Table 1 further categorizes
these responsibilities by
differentiating between Tranesupplied
and field-supplied and field
installed components.
Refer to the Installation section of
this manual for more detailed
instructions.
Locate and maintain the loose
parts, i.e. isolators, bulb wells,
temperature sensors, flow sensors
or other factory-ordered field
installed options, for installation as
required. Loose parts are located in
the starter panel on units with
factory-installed unit-mounted
starters or in the motor terminal
box for units with remote-mounted
starters.
Install unit on a foundation with flat
support surfaces level within 1/16”,
and of sufficient strength to
support concentrated loading.
Place manufacturer-supplied
isolation pad assemblies under
unit. (Use spring isolators for upper
floor installations).
Install unit per applicable Trane
installation manual.
Complete all water piping and
electrical connections.
CDHF-SVN01B-EN
General Information
Note: Field-piping must be arranged
and supported to avoid stress on the
equipment. It is strongly
recommended that the piping
contractor refrain from piping closer
than 3’-0” minimum to the
equipment. This will allow for proper
fit-up upon arrival of the unit at the
jobsite. Any adjustment that is
necessary can be made to the piping
at that time.
Where specified, supply and install
valves in water piping upstream
and downstream of evaporator and
condenser water boxes to isolate
shells for maintenance, and to
balance/trim system.
Supply and install flow switches (or
equivalent devices) in both chilled
water and condenser water piping.
Interlock each switch with proper
pump starter to ensure unit can
only operate when water flow is
established.
Supply and install taps for
thermometers and pressure
gauges in water piping adjacent to
inlet and outlet connections of both
evaporator and condenser.
Supply and install drain valves on
each water box.
Supply and install vent cocks on
each water box.
Where specified, supply and install
strainers ahead of all pumps and
automatic modulating valves.
Supply and install pressure relief
piping from pressure-relief rupture
disc to atmosphere.
If necessary, supply sufficient
Refrigerant-HCFC-22 (maximum of
1 lb. per machine) and dry nitrogen
(8 psig per machine) for pressure
testing under manufacturer’s
supervision.
Start unit under supervision of a
qualified service technician.
Where specified, supply and
insulate evaporator and any other
portions of machine as required to
prevent sweating under normal
operating conditions.
Unit-Mounted Starters Only,
remove top of starter panel and cut
access area for line-side wiring;
front left quadrant of top provides
recommended access to starter
lugs.
Supply and install wire terminal
lugs to starter.
Unit-Mounted Starters Only,
Supply and install field wiring to
line-side lugs of starter.
Supply and install a Refrigerant
Monitor per ASHRAE 15
specifications. Reference the
compliance to ASHRAE Standard
15 as shown on the “Model
CenTraVac Checksheet and
Request for Serviceman”.
To obtain a copy of “Model
CenTraVac Checksheet and Request
for Serviceman” (Form 1-27.08-6)
order from your local Trane office.
7

8
General Information
Table 1 – Installation Requirements
Type of Trane-Supplied Trane-Supplied Field-Supplied
Requirement Trane-Installed Field-Installed Field-Installed
Rigging A. Safety chains
B. Clevis connectors
C. Lifting beam
Isolation A. Isolation pads or A. Isolation pads or spring isolators
spring isolators
Electrical A. Circuit breakers or A. Jumper bars A. Circuit breakers or fusible
fusible disconnects B. Temperature sensor disconnects (optional)
(optional) (optional outdoor air) B. Remote-mounted starter
B. Unit-mounted C. Flow switches (may C. PFCCs (Remote-mounted
starter (optional) be field supplied) starter option only)
C. PFCCs (optional) D. Terminal lugs
E. Ground connection(s)
F. Jumper bars
G. BAS wiring (optional)
H. IPC wiring (remotemounted
starters only
I. Control voltage wiring
(remote-mounted starters only)
J. Oil pump interlock wiring
(remote-mounted
starters only)
K. High condenser pressure
interlock wiring
(remote-mounted starters only).
L. Chilled water pump contactor
and wiring
M.Condenser water pump
contactor and wiring
N. Option relays and wiring
(See Table 14 & 16)
Water Piping A. Flow switches (May A. Thermometers
be field supplied) B. Water flow pressure gauges
C. Isolation and balancing valves
water piping
D. Vents and drain valves
(1 each per class)
E. Pressure-relief valves
(for water boxes as required)
Rupture Disc A. Rupture disc assy A. Vent line and flexible connector
Insulation A. Insulation (Optional) A. Insulation
CDHF-SVN01B-EN

Unit Shipment
Each chiller ships from the factory as
a hermetically assembled package; it
is factory piped, wired and tested. All
openings are covered or plugged to
prevent contamination during
shipment and handling.
See Figure 2 for an illustration of a
typical unit and its components. As
soon as the unit arrives at the job
site, inspect it thoroughly for
damage and material shortages. In
addition:
1. Verify the chiller’s hermetic
integrity by checking the
evaporator pressure for an
indication of holding charge
pressure.
Note: Since there are two refrigerant
circuits both must be checked.
CDHF-SVN01B-EN
General Information
To prevent damaging moisture from
entering the unit and causing
corrosion, each chiller is pressurized
with dry nitrogen before shipment.
Note: The holding charge should
register approximately 5 psig (at sea
level) on the gauge. If the charge has
escaped, contact your local Trane
sales office for instructions.
2. Check the oil sump sight glasses
to verify that the sump was
factory-charged with 9 gallons of
oil. If no oil level is visible, contact
your local Trane sales office.
3. Compare the unit nameplate data
(including electrical characteristics)
with the corresponding ordering
and shipping information to verify
that the correct unit was shipped
to the job site.
If a thorough inspection of the
chiller reveals damage or material
shortages, be sure to file these
claims with the carrier
immediately. Specify the extent
and type of damage found, and
notify the appropriate Trane sales
representative. Do not install a
damaged unit without the sales
representative’s approval!
Storage
If the chiller will be stored at the job
site for an extended period of time
before it is installed, exercise these
precautionary measures to protect
the unit from damage:
1. Do not remove the protective
coverings factory-installed on the
control panel and compressor
inlet vane actuator for shipment.
2. Store the chiller in a dry vibration
free and secure area. If factory
insulated, protect chiller from
prolonged exposure to sunlight.
CAUTION
Insulation Damage!
To prevent damage to the factoryinstalled
insulation, do not allow
excessive exposure to sunlight.
3. Periodically check the condenser
and evaporator pressure to verify
that the 5 psig dry nitrogen at 72°F
ambient holding charge is still in
the chiller. If this charge escapes,
contact a qualified service
organization and the Trane sales
engineer that handled the order.
Note: The storage range for the
microcomputer-based devices in the
unit control panel is -40°F to 158°F
(-40°C to 70°C).
9

Figure 2 – Typical CDHF Chiller
10
General Information
CDHF-SVN01B-EN

CDHF-SVN01B-EN
General Information
Recommended Unit
Clearances
Adequate clearance around and
above the chiller is required to allow
sufficient access for service and
maintenance operations.
Figure 3 illustrates the
recommended clearances for units
with and without options. Figure 4
shows tube bundle locations. Notice
that, in each instance, the minimum
vertical clearance above the chiller is
3-feet.
In addition, be sure to provide at
least 3-feet of working space in front
of the unit control panel to satisfy the
National Electrical Code, and/or local
codes.
Important! Do not install piping or
conduit above the compressor
motor assembly or behind the
suction elbow!
Note: Specific unit clearance
requirements are also indicated in
the submittal package provided for
your unit.
Operating Environment
Besides assuring that the site
selected for chiller installation
provides the necessary clearances,
consider the equipment’s operating
environment.
To assure that electrical components
operate properly, do not locate the
chiller in an area exposed to dust,
dirt, corrosive fumes, or excessive
heat and humidity. Note that the
maximum ambient temperature for
chiller operation is 95 to 100°F (35° -
38° C).
CAUTION
Equipment Failure!
CDHF operation at ambient
temperatures exceeding 100°F
(38°C) can fatigue the unit’s rupture
disc, causing it to break at a reduced
refrigerant pressure (i.e.,

Figure 3 – Clearance Requirements for Standard CDHF
12
General Information
Notes:
1. Per NEC Article 110 - Unit mounted starters from 0-600V require 42" clearance; 601-2500V require 48" clearance;
2501-9000V require 60" clearance.
2. Clearance 1 can be at either end of machine and is required for tube pull clearance
Clearance 2 is always at the opposite end of machine from Clearance1 and is required for service clearance
3. Clearance requirement for evaporator tube removal does not include water box. Add water box dimension to this
figure.
UCP Clearance Requirements for Standard CDHF
CL1 CL2
Shell Width Entire Width Height Length Entire Length Clearance 1 Clearance 2
210 D 130.875 184.875 132.750 258.000 606.000 264.000 84.000
250 D 142.625 196.625 136.875 258.000 606.000 264.000 84.000
250 M 142.625 196.625 141.375 312.000 714.000 318.000 84.000
250 X 142.625 196.625 141.375 360.000 810.000 366.000 84.000
CDHF-SVN01B-EN

Figure 4 – Tube Bundle Locations for Model CDHF Units
CDHF-SVN01B-EN
General Information
Cooling Only and Free Cooling Units
EVSZ CDSZ A B C D E F G H
210 D 210 D 4’-5-7/16" 5"-3/8" 7’-9/16" 1’-4-1/4" 5’-0-1/8" 3’-5-1/4" 2’-5" 3’-10-3/16"
250 D 250 D 5’-0-3/4" 5"-1/4 6"-1/2 1’-7-1/4" 5’-8-3/4" 3’-10-5/8" 2’-4-1/8" 3’-11-5/8"
250 M 250 M 5’-0-3/4" 5"-1/4 6"-1/2 1’-7-1/4" 5’-8-3/4" 3’-10-5/8" 2’-4-1/8" 3’-11-5/8"
250 X 250 X 5’-0-3/4" 5"-1/4 6"-1/2 1’-7-1/4" 5’-8-3/4" 3’-10-5/8" 2’-4-1/8" 3’-11-5/8"
13

14
General Information
Table 2 – Typical Shipping and Operating Weights
Operating Weight Shipping Weight
TYPE NTON CPKW EVSZ CDSZ (lbs) (kg) (lbs) (kg)
CDHF 1500-2000 957 210D 210D 80171 36366 68629 31130
CDHF 2100-2500 1228 250D 250D 93186 42269 79213 35931
CDHG 1250-1750 716 210D 210D 82349 37354 70807 32118
CDHG 2150 892 210D 210D 89680 197710 78288 172595
CDHG 2150 892 250D 250D 96964 43983 82991 37645
CDHF 3000 1340 250M 250M 106659 48381 89425 40563
CDHF
Notes:
3500 1340 250X 250X 114445 51912 95077 43127
Weights shown above are accurate within +/- 3% and are based on the following
Operating weights include refrigerant, oil charge and water
Shells are with largest bundles and TECU .028 wall tubes
Compressor weight with medium voltage motor and above CPKW
Starter weights not included
Waterboxes are 1 pass, 150 psig Non-Marine
For other configurations refer to submittal package
CDHF-SVN01B-EN

Note: Immediately report any unit
damage incurred during handling or
installation at the job site to the
Trane sales office.
Rigging
Lifting is the recommended method
for moving chillers. Suggested lifting
arrangements for standard units are
illustrated in Figure 5.
Note that each of the cables used to
lift the unit must be capable of
supporting the entire weight of the
chiller. (See Table 2 for unit shipping
and operating weights.) Notice that
the lifting beam used to lift the unit
must be at least 23 feet long.
See Figure 5 and Table 2 for
guidance in selecting cable or sling
lengths.
� WARNING
Test Lift!
Verify chiller remains horizontal.
To avoid serious injury and possible
equipment damage, lift the chiller
horizontally; use the lifting
arrangement and rigging shown in
Figure 5. Failure to lift unit as
recommended could result in death
or serious injury or lead to
equipment damage.
CDHF-SVN01B-EN
General Information
To lift the chiller properly, insert
clevis connections at the points
indicated in Figure 5; a 2-1/2”
diameter lifting hole is provided at
each of these points. Next, attach the
lifting cables or slings.
Once the lifting cables are in place,
attach a safety cable or sling
between the first-stage casting of the
compressor and the lifting beam. To
do this, remove a retaining bolt from
the compressor first-stage casting
and replace it with an eyebolt, or
swivel clevis.
Note: There should not be tension
on this safety cable; it is used only to
prevent the unit from rolling during
the lift.
When the lift is completed, detach
the clevis connections and safety
chain, then remove the eyebolt that
was used to secure the safety chain
to the compressor, and reinstall the
retaining bolt in its place. If the chiller
cannot be moved using the
conventional rigging method just
described, consider these points.
1. If job site conditions require
rigging of the chiller at an angle
greater than 45° from horizontal
(end-to-end), dowel-pin the compressor
and remove it from the
unit. Be sure to contact a qualified
service organization for specific
rigging instructions.
CAUTION
Oil Loss!
To prevent oil migration out of the
oil tank during lifting procedures,
remove the oil from the oil tank if
the unit will be lifted at any angle
greater than 15° from horizontal
end-to-end. If oil is allowed to run
out of the oil tank into other areas of
the chiller, it will be extremely
difficult to return the oil to the oil
tank even during operation.
2. When lifting the chiller is either
impractical or undesirable, attach
cables or chains to the jacking
slots shown in Figure 5; then push
or pull the unit across a smooth
surface. Should the chiller be on a
shipping skid, it is not necessary to
remove the shipping skid from the
chiller before moving it into place.
CAUTION
Equipment Damage!
To prevent possible equipment
damage, do not use a fork lift to
move the chiller!
CAUTION
Compressor Alignment!
Lifting the compressor/motor
assembly from the shells without
factory-installed doweling in the
compressor casting flanges may
result in misalignment of the
compressor castings.
3. Position isolator pads (or spring
isolators) beneath the chiller feet;
see “Unit Isolation” section for
instructions.
4. Once the isolators are in place,
lower the chiller; again, work from
end to end in small increments to
maintain stability.
15

Figure 5 – Recommended Lifting Arrangements for CDHF
16
B
A
Jacking Points
C
Safety Chain
General Information
H
TYPE NTON EVSZ CDSZ X Y H
CDHF 1500-2000 210D 210D 143 in. 23 ft 24.75 in
CDHF 2100-2500 250D 250D 143 in. 23 ft 24.75 in
CDHG 1250-1750 210D 210D 143 in. 23 ft 24.75 in
CDHG 2150 210D 210D 143 in. 23 ft 24.75 in
CDHG 2150 250D 250D 143 in. 23 ft 24.75 in
CDHF 3000 250M 250M 172 in. 27.5 ft 24.75 in
CDHF
Notes:
3500 250X 250X 199 in. 31.5 ft 24.75 in
1. Lifting chains (or cables) are not the same length between point A and B, or between points A and C. Adjust as
necessary for an even lift.
2. Lifting holes provided on chillers to attach chains are 2 1/2 inch in diameter.
3. Attach safety chain (or cable) as shown, and without tension. The safety chain is not used for lifting, but is there to
prevent the unit from rolling.
4. Do not fork-lift the unit.
X
Y
Safety
Chain
LIFTING BEAM
CDHF-SVN01B-EN

Unit Isolation
To minimize sound and vibration
transmission through the building
structure - and to assure proper
weight distribution over the
mounting surface, always install
isolation pads or spring isolators
under the chiller feet.
Note: Isolation pads (Figure 6) are
provided with each chiller unless
spring isolators are specified on the
sales order.
Note: The center support is
approximately 1/2" shorter (higher)
than the end supports. After unit
leveling, shim the center isolator
pads. If spring isolators are used,
shim the isolators for the center
support. See Figure 7.
Specific isolator loading data is
provided in the unit submittal
package. If necessary, contact your
local Trane sales office for further
information.
Important! When determining
placement of isolation pads or spring
isolators, remember that the control
panel side of the unit is always
designated as the unit front.
CDHF-SVN01B-EN
5/16-3/8"
[8-10 mm]
General Information
Isolation Pads
When the unit is ready for final
placement, position isolation pads
under the chiller feet as shown in
Figure 7.
Remember that the chiller must be
level within 1/16” over its length and
width after it is lowered onto the
isolation pads. In addition, all piping
connected to the chiller must be
properly isolated and supported so
that it does not place any stress on
the unit.
Spring Isolators
Spring isolators should be
considered whenever chiller
installation is planned for an upper
story location. Base isolator selection
and placement on the information
presented in Figures 8-10a. (Notice
that 3 types of spring isolators - each
with its own maximum loading
characteristics are used with CDHF
chillers).
Spring isolators typically ship
assembled and ready for installation.
To install and adjust the isolators
properly, follow the instructions
given.
Figure 6 – Isolation Pad
Note: Do not adjust the isolators
until the chiller is piped and charged
with refrigerant and water.
1. Position the spring isolators under
the chiller as shown in Figures 8
and 9. Make sure that each isolator
is centered in relation to the tube
sheet.
Note: Spring isolators shipped with
the chiller are not identical! Be sure
to compare the data provided in the
unit submittal package and Figures 8
through 10a to determine proper
isolator placement.
2. Set the isolators on the sub-base;
shim as necessary to provide a
flat, level surface at the same
elevation for the end supports,
and approximately 1/2" higher for
the center support. Be sure to
support the full underside of the
isolator base plate; do not straddle
gaps or small shims.
18"
[457 mm]
6"
[152.4 mm]
17

Figure 7 – Isolation Pad Placement - CDHF, CDHG
18
General Information
Important:
Center support is 1/2" (13mm) shorter than end supports. Requires 1/2" steel shim under pad for Center
Support at installation after leveling.
Isolation Pad Loading (lb)
TYPE NTON CPKW EVSZ CDSZ Left Pad Center Pad Right Pad
CDHF 1500-2000 957 210D 210D 25150 26718 28304
CDHF 2100-2500 1228 250D 250D 29292 31056 32838
CDHG 1250-1750 716 210D 210D 25997 27446 28907
CDHG 2150 892 210D 210D 26507 29850 33322
CDHG 2150 892 250D 250D 20680 32316 33967
CDHF 3000 1340 250M 250M 33527 35546 37586
CDHF 3500 1340 250X 250X 35975 38140 40330
Isolation Pad Loading (kg)
TYPE NTON CPKW EVSZ CDSZ Left Pad Center Pad Right Pad
CDHF 1500-2000 957 210D 210D 11408 12119 12839
CDHF 2100-2500 1228 250D 250D 13287 14087 14895
CDHG 1250-1750 716 210D 210D 11792 12449 13112
CDHG 2150 892 210D 210D 58438 65808 73462
CDHG 2150 892 250D 250D 13916 14659 15407
CDHF 3000 1340 250M 250M 15208 16123 17049
CDHF 3500 1340 250X 250X 16318 17300 18294
Notes:
Isolator pad loading is based on the following
Operating weights include refrigerant, oil charge and water
Shells are with largest bundles and TECU .028 wall tubes
Compressor weight with medium voltage motor and above CPKW
Starter weights not included
Waterboxes are 1 pass, 150 psig Non-Marine
For other configurations refer to submittal package
CDHF-SVN01B-EN

Figure 8 – Spring Isolator Placement - CDHF, CDHG
CDHF-SVN01B-EN
General Information
Estimated Spring Isolator Loading (lb)
TYPE NTON CPKW EVSZ CDSZ LF MF RF LR MR RR
CDHF 1500-2000 957 210D 210D 14120 14948 15785 11029 11770 12519
CDHF 2100-2500 1228 250D 250D 13861 14721 15591 15431 16334 17247
CDHG 1250-1750 716 210D 210D 14432 15193 15960 11564 12253 12947
CDHG 2150 892 210D 210D 15623 17428 19299 10884 12422 14023
CDHG 2150 892 250D 250D 14413 15209 16012 16267 17108 17955
CDHF 3000 1340 250M 250M 15865 16850 17845 17663 18696 19741
CDHF 3500 1340 250X 250X 17023 18080 19148 18952 20060 21182
Estimated Spring Isolator Loading (kg)
TYPE NTON CPKW EVSZ CDSZ LF MF RF LR MR RR
CDHF 1500-2000 957 210D 210D 6405 6780 7160 5003 5339 5679
CDHF 2100-2500 1228 250D 250D 6287 6678 7072 7000 7409 7823
CDHG 1250-1750 716 210D 210D 6546 6892 7239 5246 5558 5873
CDHG 2150 892 210D 210D 34443 38422 42547 23995 27386 30915
CDHG 2150 892 250D 250D 6538 6899 7263 7379 7760 8145
CDHF 3000 1340 250M 250M 7196 7643 8095 8012 8480 8954
CDHF 3500 1340 250X 250X 7722 8201 8686 8597 9099 9608
Notes:
Vibration isolator loading is based on the following
Operating weights include refrigerant, oil charge and water
Shells are with largest bundles and TECU .028 wall tubes
Compressor weight with medium voltage motor and above CPKW
Starter weights not included
Waterboxes are 1 pass, 150 psig Non-Marine
For other configurations refer to submittal package
19

Figure 9 – Chiller Foot/Isolator Orientation
20
Center tube sheet
support leg
General Information
Side View of Unit End View of Unit
Center of
Isolator Spring
Note: The spring isolator must be centered in relation
to the tube sheet. Do not align the isolator with the
flat part of the chiller foot, because the tube sheet is
often off-center.
3. If required, bolt the isolators to the
floor through the slots provided,
or cement the pads.
Note: Fastening the isolators to the
floor is not necessary unless
specified.
4. If the chiller must be fastened to
the isolators, insert capscrews
through the chiller base and into
the holes tapped in the upper
housing of each isolator. However,
do not allow the screws to
protrude below the underside of
the isolator upper housing. An
alternative method of fastening
the chiller to the isolators is to
cement the neoprene pads.
Outside edge of
tube sheet
5. Set the chiller on the isolators;
refer to “Rigging” for lifting
instructions.
The weight of the chiller will force
the upper housing of each isolator
down, perhaps causing it to rest
on the isolator’s lower housing.
(Figure 10, 10a illustrates spring
isolator construction.)
6. Check the clearance (labeled X in
Figure 10, 10a ) on each isolator. If
this dimension is less than 1/4” on
any isolator, use a wrench to turn
the adjusting bolt one complete
revolution upward.
Note: When the load is applied to
the isolators (Step 5), the top plate
of each isolator moves down to
compress the springs until either:
a. The springs support the load; or
b. The top plate rests on the
bottom housing of the isolator.
1. If the springs are supporting
the load, screwing down on
the adjusting bolt (Step 7) will
immediately begin to raise
the chiller.
End of tube
sheet
Note: Place isolator near outside
edge of tube sheet as shown.
7. Turn the adjusting bolt on each of
the remaining isolators to obtain
the required minimum clearance
at X (Figure 10, 10a ) of 1/4”.
8. Once the minimum required
clearance is obtained on each of
the isolators, level the chiller by
turning the adjusting bolt on each
of the isolators on the low side of
the unit. Be sure to work from one
isolator to the next. Remember
that the chiller must be level to
within 1/16”: over its length and
width, and that clearance X of
each isolator must be at least 1/4
inch.
CDHF-SVN01B-EN

Figure 10 – Typical Spring Isolator Types and Construction
Type CT-4 Spring Isolators
5/8" [16 mm]
9-1/4"
[235 mm]
C-C
foundation
bolts
6-1/2" [165 mm]
Free Height
Type CT-7 Spring Isolators
8-3/4" [222
mm] C-C
foundation
bolts
6-5/8" [168
mm] Free
Height
5/8"
[16 mm]
CDHF-SVN01B-EN
5/8"
[16 mm]
7-1/2" [191 mm]
10-1/4"
[260 mm]
Adjusting Bolt
7-1/4"
[184 mm]
9-3/4"
[248 mm]
General Information
Adjust the isolator so
that the upper
housing clears the
lower housing by at
least 1/4” [6 mm]
Acoustical nonskid
neoprene pad (top
and bottom)
Adjust the isolator so that
the upper housing clears the
lower housing by at least
1/4” [6 mm]
Adjusting Bolt
Acoustical nonskid
neoprene pad (top
and bottom)
Isolator Maximum Spring
Type Load Deflection Color
and Size (lbs.) (Inches) Coding
CT-4-25 1,800 1.22 Red
CT-4-26 2,400 1.17 Purple
CT-4-27 3,000 1.06 Orange
CT-4-28 3,600 1.02 Green
CT-4-31 4,400 0.83 Gray
CT-4-32 5,200 0.74 White
Isolator Maximum Spring
Type Load Deflection Color
and Size (Kg) (mm) Coding
CT-4-25 816 31 Red
CT-4-26 1,089 30 Purple
CT-4-27 1,361 27 Orange
CT-4-28 1,633 26 Green
CT-4-31 1,996 21 Gray
CT-4-32 2,359 19 White
Isolator Maximum Spring
Type Load Deflection Color
and Size (lbs.) (Inches) Coding
CT-7-25 3,150 1.22 Red
CT-7-26 4,200 1.17 Purple
CT-7-27 5,250 1.06 Orange
CT-7-28 6,300 1.02 Green
CT-7-31 7,700 0.83 Gray
CT-7-32 9,100 0.74 White
Isolator Maximum Spring
Type Load Deflection Color
and Size (Kg) (mm) Coding
CT-7-25 1,429 31 Red
CT-7-26 1,905 30 Purple
CT7-27 2,381 27 Orange
CT-7-28 2,858 26 Green
CT-7-31 3,493 21 Gray
CT-7-32 4,128 19 White
21

Figure 10A – Typical Spring Isolator Types and Construction
CT-12 Spring Isolators
3-1/2"
[89 mm]
7"
[178
mm]
8-1/8" [206
mm] Free
Height
22
5/8"
[16 mm]
5/8"
[16 mm]
12-1/2"
[318 mm]
(2) Adjusting Bolts
General Information
14-3/4" [375 mm]
7-3/8" [187 mm]
6-1/2"
[165 mm]
6-5/8"
[168 mm]
13-1/4" [337 mm]
Adjust the isolator so that
the upper housing clears the
lower housing by at least
1/4” [6.4 mm]
Acoustical nonskid
neoprene pad (top
and bottom)
Isolator Max Deflection Spring
Type/Size Load lb (kg) inches (mm) Color Code
CT-12-25 5,400 1.22 Red
CT-12-26 7,200 1.17 Purple
CT-12-27 9,000 1.06 Orange
CT-12-28 10,800 1.02 Green
CT-12-31 13,200 0.83 Gray
CT-12-32 15,600 0.74 White
CDHF-SVN01B-EN

CT-16 and CT20
Spring Isolators
CDHF-SVN01B-EN
General Information
Isolator Max Deflection Spring
Type/Size Load lb (kg) inches (mm) Color Code
CT 16-26 9600 (4355) 1.17 (29.7) Purple
CT 16-27 12000 (5443) 1.06 (26.9) Orange
CT 16-28 14400 (6532) 1.02 (25.9) Green
CT 16-31 17600 (7983) 0.83 (21.1) Gray
CT 16-32 20800 (9435) 0.74 (18.8) White
Isolator Max Deflection Spring
Type/Size Load lb (kg) inches (mm) Color Code
CT 20-26 12000 (5443) 1.17 (29.7) Purple
CT 20-27 15000 (6804) 1.06 (26.9) Orange
CT 20-28 18000 (8165) 1.02 (25.9) Green
CT 20-31 22000 (9979) 0.83 (21.1) Gray
CT 20-32 26000 (11794) 0.74 (18.8) White
23

24
General Information
Unit Leveling
Follow the instructions outlined
below and illustrated in Figure 11 to
determined whether or not the
chiller is set level.
1. Measure an equal distance up
from each foot of the chiller
(identified as X in Figure 11) and
make a punch mark at each
measured distance.
2. Suspend a clear plastic tube along
the length of the chiller as shown
in Figure 11.
Figure 11 – Checking Unit Levelness
Raise chiller at one
end to align match
marks with water
level.
Clear Plastic Tube
(Fill tube with water to punch mark.)
3. Fill the tube with water until the
level aligns with the punch mark at
one end of the chiller; then check
the water level at the opposite
mark.
If the water level does not align
with the punch mark, use fulllength
shims to raise one end of
the chiller until the water level at
each end of the tube aligns with
the punch marks at both ends of
the chiller
4. Once the unit is level across its
length, repeat Steps 1 through 3 to
see if unit is level across the width.
5. If isolation pads have been used,
shim the center support.
Measure and mark
an equal distance
up from each
chiller foot.
CDHF-SVN01B-EN

Overview
Several water piping circuits must be
installed and connected to the chiller.
Note: Field piping must be arranged
and supported to avoid stress on the
equipment. It is strongly
recommended that the piping
contractor refrain from piping closer
than 3’-0” minimum to the
equipment. This will allow for proper
fit-up upon arrival of the unit at the
job-site. Any adjustment that is
necessary can be made to the piping
at that time.
1. Pipe the evaporator into the chilled
water circuit.
2. Pipe the condenser into the
cooling tower water circuit. Piping
suggestions for each of the water
circuits listed above are outlined
later in this section. General
recommendations for the
installation of field-supplied piping
components (e.g., valves, flow
switches, etc.) common to most
chiller water circuits are listed
below.
Water Treatment
Since the use of untreated or
improperly treated water in a
CenTraVac may result in inefficient
operation and possible tube
damage, be sure to engage the
services of a qualified water
treatment specialist if needed. A
label with the following disclamatory
note is affixed to each CDHF unit:
Customer Note: “The use of
improperly treated or untreated
water in this equipment may result
in scaling, erosion, corrosion, algae
or slime. The services of a qualified
water treatment specialists should
be engaged to determine what
treatment, if any, is advisable. The
CDHF-SVN01B-EN
Water Piping
Trane warranty specifically excludes
liability for corrosion, erosion, or
deterioration of Trane equipment,
Trane assumes no responsibilities
for the results of the use of untreated
or improperly treated water, or saline
or brackish water.”
CAUTION
Water Treatment!
Do not use untreated or improperly
treated water, or equipment
damage may occur.
Pressure Gauges
Locate pressure gauge taps in a
straight run of pipe. Place tap a
minimum of one pipe diameter
downstream of any elbow, orifice
etc. Example, for a 6” pipe, the tap
would be at least 6” from any elbow,
orifice, etc.
Valves
1. Install field-supplied air vents and
drain valves on the water boxes.
Each water box is provided with a
3/4” NPTF vent and drain
connection.
Plastic plugs are factory-installed in
both openings for shipment;
remove and discard these plugs as
you install the water box vents
and drain valves.
2. If necessary for the application,
install pressure-relief valves at the
drain connections on the
evaporator and condenser water
boxes. To do so, add a tee with the
relief valve attached to the drain
valve. To determine whether or
not pressure-relief valves are
needed for a specific application,
keep in mind that:
a) Vessels with close-coupled
shutoff valves may cause high,
potentially damaging hydrostatic
pressures as fluid
temperature rises; and,
b) Relief valves are required by
ASME codes when the shell
waterside is ASME. Consult
guidelines or other applicable
codes to assure proper relief
valve installation.
CAUTION
Overpressurization!
Failure to install pressure-relief
valves in the condenser and
evaporator water circuits may result
in shell damage due to hydrostatic
expansion.
Strainers
Install a strainer in the entering side
of each piping circuit to avoid
possible tube plugging in the chiller
with debris.
CAUTION
Tube Damage!
Failure to install strainers in all water
piping entering the chiller can result
in tube plugging conditions that
damage unit components.
Flow-Sensing Devices
Use either flow switches or
differential pressure switches in
conjunction with the pump interlocks
to verify evaporator and condenser
water flows.
To assure adequate chiller
protection, wire the chilled-water
and condenser-water flow switches
in series with the appropriate water
pump interlock. Refer to the wiring
diagrams that shipped with the unit
for specific electrical connections.
25

Unless stated otherwise, all flowsensing
devices must be
field-supplied. Be sure to follow the
manufacturer’s recommendations
for device selection and installation.
Also, review the general flow switch
installation guidelines listed below.
1. Mount the flow switch upright in a
horizontal section of pipe. Allow at
least 5 pipe diameters of straight,
horizontal run on each side of the
switch.
Avoid locations adjacent to
elbows, orifices and valves
whenever possible.
2. To assure that the flow switch
operates as designed, adjust the
length of the flow switch paddle to
compensate for the pipe diameter
and the height of the coupling tee
used to install the switch.
3. Install the flow switch using a
coupling that is large enough to
allow the insertion of a bushing
one pipe diameter larger than the
flow switch base (Figure 12). This
will prevent interference with the
flow switch paddle.
Figure 12 – Flow Switch Installation
Pipe half coupling
26
Example Flow Switch
Water Piping
4. Verify that the direction-of-flow
arrow on the switch points in the
same direction as actual water
flow through the piping circuit.
5. Remove all air from the piping
circuit to prevent possible flow
switch “fluttering”.
6. Adjust the flow switch to open
when water flow is less than
normal.
Evaporator and Condenser
Water Piping
Figures 13 and 14 illustrate the
typical water piping arrangements
recommended for the evaporator
and condenser.
Note: It is strongly recommended
that the piping contractor refrain
from piping closer than 3’-0”
minimum to the equipment. This will
allow for proper fit-up upon arrival of
the unit at the job-site. Any
adjustment that is necessary can be
made to the piping at that time.
1 Pipe size larger
bushing to avoid
paddle interference
5 pipe diameters 5 pipe diameters
Water piping connection sizes are
identified in Tables 3 and 4.
Remember that entering and leaving
evaporator and condenser water
must be piped in accordance with
the nameplate entering and leaving
orientation.
IMPORTANT
Water flows must be piped in
accordance with nameplate
designation.
Note: To assure that the evaporator
water piping is clear, check it after
the chilled water pump is operated
but before initial chiller start-up. If
any partial blockages exist, they can
be detected and removed to prevent
possible tube damage resulting from
evaporator freeze-up or erosion.
For applications that include an
“infinite source” or “multiple-use”
cooling condenser water supply,
install a valve bypass “leg”
(optional) between the supply and
return pipes; see Figure 14. This
valve bypass allows the operator to
short-circuit water flow through the
cooling condenser when the supply
water temperature is too low.
Note: To prevent operating
problems, pressure differential
between condenser and evaporator
should not fall below 3 psid.
To accommodate lifting apparatus,
lifting holes are provided in the
stiffening ribs of each evaporator
water box to enable attachment of a
swivel clevis (field-supplied).
Condenser water boxes are provided
with welded nuts that allow
installation of the eyebolt included in
the unit’s loose parts-box.
CDHF-SVN01B-EN

Figure 13 – Typical Evaporator Water Piping Circuit
CDHF-SVN01B-EN
Water Piping
5S1
Notes:
1. Flow switch 5S1 (Item 7 in Legend of Components) should be installed in
the leaving leg of the chilled water circuit.
2. It is recommended to pipe 1 gauge between entering and leaving pipes. A
shutoff valve on each side of the gauge allows the operator to read either
entering or leaving water pressure.
Legend of Field-Supplied/Installed Components
1. Pressure Gauge
2. Thermometer(s) (If field supplied)
3. Union(s) or Flanged Connection(s)
4. 1/2" NPT Coupling(s)
5. Balancing Valve
6. Gate (Isolation) Valve(s) or Ball Valve(s)
7. Chiller Water Flow Switch (5S1)
8. Strainer
9. Evaporator Water Pump
27

Figure 14 – Typical Condenser Water Piping Circuit
28
Water Piping
Notes:
1. Flow switch 5S2 (Item 7 in Legend of Components) should be installed in
the leaving leg of the chilled water circuit.
2. It is recommended to pipe 1 gauge between entering and leaving pipes.
3. Some type of field-supplied temperature control device may be required to
regulate the temperature of the heat-recovery condenser water circuit. For
application recommendations, see Trane Applied Manual, AM-FND-8, titled
“Heat-Recovery Engineering Seminar.”
4. Intalla bypass valve system to avoid circulating water through the auxiliary
shell when the unit is shut down.
Legend of Field-Supplied/Installed Components
1. Pressure Gauge
2. Thermometer(s) (If field supplied)
3. Union(s) or Flanged Connection(s)
4. 1/2" NPT Coupling(s)
5. Balancing Valve
6. Gate (Isolation) Valve(s) or Ball Valve(s)
7. Condenser Water Flow Switch
8. 3-Way Valve (Optional)
9. Condenser Water Pump
10. Strainer
CDHF-SVN01B-EN

Water Piping Connections
All CDHF units, “A” and later design
sequences, use grooved-pipe
connections. (See Table 5). These are
cut-groove end NSP (Victaulic-style) pipe connection .
Flanged connections for 300 PSI
waterboxes use welded flanges.
Piping joined using grooved type
couplings, like all types of piping
systems, requires proper support to
carry the weight of pipes and
equipment.
The support methods used must
eliminate undue stresses on joints,
piping and other components; allow
movement where required, and
provide for any other special
requirements (i.e., drainage, etc.).
CDHF-SVN01B-EN
Water Piping
Table 3 – Evaporator Water Piping
Connection Sizes –
CDHF and CDHG
Evaporator
Units Shell Connection
Size Size Size
Range EVSZ 1 Pass
1250-2000 210D 16"
1250-2150 210D 16"
2100-2500 250D 16"
3000 250M 18"
3500
Note:
250X 18"
EVSZ = Evaporator Shell Size;
D = Duplex
Table 4 – CondenserWater Piping
Connection Sizes –
CDHF and CDHG
Condenser
Units Shell Connection
Size Size Size
Range CDSZ 1 Pass
1250-2000 210D 16"
1250-2150 210D 16"
2100-2500 250D 16"
3000 250M 20"
3500
Note:
250X 20"
CDSZ = Condenser Shell Size;
D = Duplex
Table 5 – Water Piping Connection Components
Water Box
Connection Water Box Design Pressure
Unit Model Type 150 psig 300 psig
CDHF or CDHG Victaulic Customer provided Customer provided
Victaulic Coupling Victaulic Coupling
CDHF or CDHG Flanged Trane provided Trane Provided
Victaulic-to-Flange Welded on
Adapter Flange
Figure 15 – Typical Grooved Pipe Connection
29

30
Water Piping
Grooved Pipe Coupling
A customer-supplied, standard
flexible grooved pipe coupling
(Victaulic Style 77 or equivalent)
should be used to complete the
Victaulic connection for both 150 and
300 psig water boxes. See Figures 15
and 16 . When a flexible coupling
such as this is installed at the water
box connections (Figure 16 ), other
flexible piping connectors (i.e.,
braided-steel, elastomeric arch, etc.)
are usually not required to attenuate
vibration and/or prevent stress on
the connections.
Figure 16 – Customer Piping Alternatives for CDHF Water Box Connections
Refer to the coupling manufacturer’s
guidelines for specific information
concerning proper piping system
design and construction methods for
grooved water piping systems.
Note: Flexible coupling gaskets
require proper lubrication before
installation to provide a good seal.
Refer to the coupling manufacturer’s
guidelines for proper lubricant type
and application.
CDHF-SVN01B-EN

Flange-Connection Adapters
When flat-face flange connections
are specified, flange-to-groove
adapters are provided (Victaulic Style
741 for 150 psig systems), Figure 17.
The adapters are shipped bolted to
one of the chiller end-supports
(Figure 18). Adapter weights are
given in Table 6. The flange adapters
provide a direct, rigid connection of
flanged components to the groovedpipe
chiller water box connections.
In this case, the use of flexible type
connectors (i.e., braided steel,
elastomeric arch, etc.) is
recommended to attenuate vibration
and/or prevent stress at the water
box connections.
Flange adapters are not provided for
units with 300 psig water boxes.
(These require welded flanges).
CDHF-SVN01B-EN
Water Piping
All flange-to-flange assembly bolts
must be provided by the installer.
Bolt sizes and number required are
given in Table 6. The four draw-bolts
needed for the 16-inch Style 741 (150
psig) adapters are provided. The
Style 741, 150 psig flange adapter
requires a smooth, hard surface for a
good seal.
Connection to other type flange
faces (i.e., raised serrated, rubber,
etc.) will require the use of a flange
washer between the faces. Refer to
the flange adapter manufacturer’s
guidelines for specific information.
Note: The flange-adapter gasket
must be placed with the color coded
lip on the pipe and the other lip
facing the mating flange.
CAUTION
Piping Connection Leaks!
To provide effective seal, gasketcontact
surfaces of adapter must be
free of gouges, undulations or
deformities.
Victaulic Gasket Installation
1. Check gasket and lubricate: Check
gasket supplied to be certain it is
suited for intended service. Code
identifies gasket grade. Apply a
thin coat of silicone lubricant to
gasket lips and outside of gasket.
2. Install Gasket: Place gasket over
pipe end, being sure gasket lip
does not overhang pipe end. See
Figure 17 for gasket configuration.
3. Join pipe ends: Align and bring
two pipe ends together and slide
gasket into position centered
between the grooves on each
pipe. No portion of the gasket
should extend into the groove on
either pipe.
4. Apply Vic-Flange. Open Vic-Flange
fully and place hinged flange
around the grooved pipe end with
the circular key section locating
into the groove.
5. Insert Bolt: Insert a standard bolt
through the mating holes of the
Vic-Flange to secure the flange
firmly in the groove.
6. Tighten Nuts: Tighten nuts
alternately and equally until
housing bolt pads are firmly
together -metal-to-metal.
Excessive nut tightening is not
necessary.
Note: Uneven tightening may cause
gasket to pinch.
Table 6 – Installation Data for CDHF 150 PSIG Flange Adapters
Nom. Size Assy Bolt Size No. Assy Bolt Pattern Weights
(In/mm) (In)* Bolts Req. Dia. (In/mm) (lbs/kg)
16/400 1 x 4-1/2 16 21.25/540 90.0/40.8
18/457 1.13 x 4.75 16 22.75/578 100/45.4
20/508 1.13 x 5.25 20 25.00/635 120/54.4
*Bolt size for conventional flange-to-flange connection. Longer bolts are required when flange washer must be used.
31

32
Water Piping
Figure 17 – Typical Victaulic Flange Gasket Configuration
Figure 18 – Typical Shipping Location on Unit for Shipping Flange
SCREW
ADAPTER
LEG SUPPORT
CDHF-SVN01B-EN

CDHF-SVN01B-EN
Water Piping
Bolt-Tightening Sequence for
Water Piping Connections
A bolt-tightening sequence for
flanges with flat gaskets or O-rings is
described below and shown in
Figure 19. Remember that
improperly tightening flanges may
cause a leak!
Note: Before tightening any of the
bolts, align the flanges. Flange bolt
torque requirements are given in
Table 7.
Flanges with 4, 8 or 12 Bolts.
Tighten all bolts to a snug tightness,
following the appropriate numerical
sequence for the flange. Repeat this
sequence to apply the final torque to
each bolt.
Flanges with 16, 20 or 24 Bolts.
Following the appropriate numerical
sequence, tighten only the first half
of the total number of bolts to a snug
tightness. Next, sequentially tighten
the remaining half of the bolts in the
proper order.
Flanges with More than 24 Bolts.
Refer to Figure 19 and sequentially
tighten the first 12 bolts to a snug
tightness. Tighten the next 12
consecutively numbered bolts in
sequence, to the final torque.
Then, apply final torque to the first
12 bolts and the bolts not yet
tightened (i.e., unnumbered bolts in
Figure 19). Be sure to start with bolt
“1” and move progressively around
the flange in a clockwise direction.
Evaporator Water Box Covers.
See Figure 19. Ensure that the water
box head rests tightly against the
gasket or tube sheet; then snugly
tighten the bolts in sequential order.
If excessive tube sheet crown
prevents the head from contacting
the tube sheet, tighten the bolts
located where the greatest gaps
occur. Be sure to use an equal
number of bolt turns from side to
side.
Then, apply final torque to each bolt
in sequential order. (Each bolt is
identified by number in Figure 19.)
Table 7 – Flange Bolt Torque Recommendations for O-Ring and Flat-Gasket
Piping Connections (See Note).
Bolt Size Gasket Type
(In) O-Ring Flat
3/8 25 (34) 12-18 (16-24)
1/2 70 (95) 33-50 (45-68)
5/8 150 (203) 70-90 (95-122)
3/4 250 (339) 105-155 (142-210)
Note: Torques provided in Ft./Lbs. (Newton/metres)
33

34
Water Piping
Figure 19 – Bolt Tightening Sequences for Water Piping Flanges and
Water Boxes
Flanges with more than 24 bolts
Evaporator Water Box Covers
CDHF-SVN01B-EN

Refrigerant Vent-Line Piping
General Recommendations
Both the purge and rupture disc vent
lines must be routed to outside
atmosphere. Use only material
compatible with the refrigerant in
use. The use of PVC (not CPVC)
piping is acceptable if the pipe joint
is properly primed and if the
adhesive used has been tested for
refrigerant compatibility. Testing
conducted in Trane laboratories has
approved the use of the following
materials for PVC pipe construction.
Primer - Hercules, Primer for PVC
#60-456;
Adhesive - Hercules, Clear PVC,
Medium Body, Medium Set, #60-020.
Consult with the manufacturers of
any field-provided components or
materials added to the refrigerantside
of the machine for acceptable
material compatibility.
During vent line construction,
provide a drip leg on the line that is
of sufficient length to accommodate
a minimum of one gallon of liquid.
Provide a standard 1/4” FL x 1/4”
NPT, capped refrigerant service valve
to facilitate liquid removal.
Accumulated liquid must be drained
from the drip leg into an evacuated
waste container once every six
months, at a minimum; and more
often if the purge operates
excessively.
CDHF-SVN01B-EN
Vent Line Piping
Purge Discharge Vent Line
On CDHF units, the purge discharge
lines are factory-piped downstream
of the rupture discs on the unit.
Since there are two separate
refrigerant circuits, there will be two
purges installed on each machine.
Each purge has its own discharge
line.
Rupture Disc Vent Installation
All CenTraVac chillers are equipped
with carbon rupture discs. A crosssection
of the rupture disc assembly
appears in Figure 20A along with an
illustration indicating the location of
the rupture disc on the suction
elbow. There are two rupture discs
on CDHF chillers, one per refrigerant
circuit. See Figure 20 for locations.
If refrigerant pressure within the
evaporator exceeds 15 psig, the
rupture disc breaks, shell pressure is
relieved as refrigerant escapes from
the chiller.
When constructing the rupture disc
vent line, be sure to consult local
codes for applicable guidelines and
constraints.
Several general recommendations
for rupture disc vent line installation
are outlined below.
1. Verify that the vacuum support
side of the rupture disc is
positioned as shown in the cross
section view that appears in Figure
20.
Note: If the rupture disc was
removed for any reason, it must
be reinstalled as shown.
2. Do not apply threading torque to
the outside pipe assembly when
installing the connection pipe.
3. Rupture Disc Installation
Instructions. To prevent damage to
the rupture disc, use the following
installation procedure:
3.1 Install the bottom 2 bolts.
3.2 Install the rupture disc with
correct orientation (Ref. arrow
or vacuum support bar facing
inside) and a gasket on each
side. See Figure 20.
3.3 Install the top 2 bolts.
3.4 Center the disc and gaskets to
flange bore.
3.5 Hand tighten all bolts assuring
equal pressure
3.6 Use a “Torque Wrench” set to
240 In-Lb with a 9/16" socket.
3.7 Tighten bolts in a star pattern 1/
2 turn each.
3.8 Torque bolts in a star pattern to
240 In-Lbs. each.
35

4. Support the vent piping, use a
flexible connection to avoid
placing stress on the rupture disc.
(Stress can alter rupture pressure
and cause the disc to break
prematurely.)
The flexible connector used to
isolate the rupture disc from
excessive vent line vibration must be
compatible with the refrigerant in
use. Use a flexible, steel connector
such as the stainless-steel type MFP,
style HNE, flexible pump connector
(from Vibration Mounting and
Control, Inc.) or equivalent.
36
Vent Line Piping
See Figure 20C for a recommended
relief piping arrangement.
Important! Vent pipe size must
conform to ANSI/ASHRAE Standard
15, which discusses vent pipe sizing.
Use Table 8 and then Figure 21 to
determine proper vent pipe size.
Note: To determine the total “C”
value for a specific unit, add the
appropriate “C” values for the
evaporator, condenser and
economizer. With this sum, refer to
Figure 21 to determine the vent line
pipe diameter needed to handle
flow.
5. If the two vent lines are piped
together, size the common line
appropriately to handle the total
flow. (See Note 2, Table 8).
6. Normally, where multiple chillers
are used, install a separate rupture
disc vent line for each unit.
7. Consult local regulations for any
special relief line requirements
and refer to CFC-GUIDE-2
published by The Trane Company.
8. The discharge of the vent line
outside should not be in the
general vicinity of any fresh air
intakes to the building. Any gas
venting from the vent line should
not be allowed to re-enter the
building.
Table 8 - “C” Value Used to Determine Rupture Disc Vent Line Size CDHF & CDHG
Evaporator Condenser Total
NTON Shell Shell Rupture “C” Value for Each Component for “C” Value for
Compressor Size Size Disc Each Duplex Side Each Duplex
Size EVSZ CDSZ Diameter Evaporator Condenser Economizer Side
1250-2000 210D 210D 3" 53.6 40.4 17.4 111.4
1250-2150 210D 210D 3" 53.6 40.4 17.4 111.4
2100-2500 250D 250D 3" 59.1 43.9 17.4 120.4
3000 250M 250M 3" 72.2 53.8 19.5 145.5
3500 250X 250X 3" 83.3 62.0 19.5 164.8
Notes:
1. Use the Total “C” Value for Each Circuit to determine the vent line diameter needed to handle the flow, refer to
Figure 21.
2. If piping multiple rupture discs to a common vent line, first determine the total “C” value for each rupture disc, then
add all “C” values together and apply the result to the “Vent Pipe Sizing Chart” Figure 21.
3. EVSZ = Evaporator Shell Size
D = Duplex
4. CDSZ = Condenser Shell Size
D = Duplex
CDHF-SVN01B-EN

Figure 20A - (Continued)
CDHF-SVN01B-EN
Vent Line Piping
Figure 20 - Illustrated Rupture Disc Location, Cross Section of Rupture Disc and Recommended Rupture Disc Relief
Piping
Rupture Disc
circled with
dashed lines
37

Figure 20B - (Continued)
38
Vent Line Piping
CDHF-SVN01B-EN

Figure 20C - (Continued)
CDHF-SVN01B-EN
Vent Line Piping
39

Figure 21 - Rupture Disc Vent Pipe Sizing
40
Vent Line Piping
CDHF-SVN01B-EN

Unit Insulation Requirements
Factory-installed insulation is
available as an option for all units.
Below is Table 9 showing unit
insulation requirements for CDHF
units.
In those instances where the chiller
is not factory-insulated, install
insulation over the areas shaded in
Figure 22. It may also be necessary
to insulate the compressor suction
cover if the unit is installed in an area
subject to high humidities. The
quantities of insulation required
based on unit size and insulation
CDHF-SVN01B-EN
Insulation
thickness listed is determined at
normal design conditions which are:
- 85°F Dry Bulb Ambient
Temperature
- 75% Relative Humidity
Note: If the unit is not factoryinsulated:
Install insulation around
the evaporator bulbwells; and,
ensure that the bulbwells and
connections for the water box drains
and vents are still accessible after
insulation is applied.
Important:
Units with a refrigerant pump do
not need insulation on the motor.
Do not insulate over unit wiring.
Raise the wiring harness and
insulate underneath. Do not insulate
over sensor modules.
Table 9 - CDHF Unit Insulation Requirements
EVSZ 3/4" Insulation 3/8" Insulation
(Note: 1) (Note: 2) (Note: 3)
210D 1270 Sq. Ft. 193 Sq. Ft.
250D 1308 Sq. Ft. 258 Sq. Ft.
250M 1410 Sq. Ft. 280 Sq. Ft.
250X 1500 Sq. Ft. 280 Sq. Ft.
Notes:
1. EVSZ = Evaporator Shell Size,
L = Long Shell, S = Short Shell,
D = Duplex
2. 3/4" sheet insulation is installed on the evaporator, evaporator waterboxes,
suction elbow and suction cover as indicated in Figure 22.
3. 3/8" sheet insulation is installed on all economizers. All liquid lines and
other pipes require the use of 1/2"-wall pipe insulation, or 3/8" sheet
insulation.
CAUTION
Insulation Damage!
If the factory-installed insulation will
be painted in the field, use only
water-based latex paints! Thinners
and solvents used in other types of
paints may cause seams in the
insulation to open as a result of
shrinkage. To prevent damage to the
factory-installed insulation, do not
allow excessive exposure to
sunlight.
41

42
Figure 22 - Recommended Areas for Unit Insulation
CDHF-SVN01B-EN

About Wiring Drawings
The typical Duplex customer
connection diagrams shown at the
end of this manual are
representative of standard CDHF
units, and are provided only for
general reference. Because these
illustrations may not reflect the
actual wiring of your unit always
refer to the wiring diagrams that
shipped with the chiller for specific
electrical schematic and connection
information.
Note: Unit-mounted starters are
available as an option on CDHF
units.
While this option eliminates most
field-installed wiring requirements,
the electrical contractor must still
complete the electrical connection
for: (1) power supply wiring to the
starter, (2) other unit control options
present, and (3) any field-supplied
control devices.
CDHF-SVN01B-EN
Electrical
Information
General Requirements
����� WARNING!
Hazardous Voltage w/
Capacitors!
Disconnect all electric power,
including remote disconnects before
servicing. Follow proper lockout/
tagout procedures to ensure the
power cannot be inadvertently
energized. For variable frequency
drives or other energy storing
components provided by Trane or
others, refer to the appropriate
manufacturer’s literature for
allowable waiting periods for
discharge of capacitors. Verify with
an appropriate voltmeter that all
capacitors have discharged. Failure
to disconnect power and discharge
capacitors before servicing could
result in death or serious injury.
Note: For additional information
regarding the safe discharge of
capacitors, see PROD-SVB06A-EN or
PROD-SVB06A-FR.
General
As you review this manual, along
with the wiring instructions
presented in this section, keep in
mind that:
1. Typical field connection
requirements for remote-mounted
starters are shown in drawings at
end of the manual and
summarized in Table below.
2. All field-installed wiring must
conform to NEC guidelines, as
well as to any applicable state and
local codes. Be sure to satisfy
proper equipment grounding
requirements per NEC.
3. Compressor motor electrical data
including motor kw, voltage
utilization range, rated load amps
and locked rotor amps is listed on
the chiller nameplate.
4. All field-installed wiring should be
checked for proper terminations,
and for possible shorts or
grounds.
Typical Duplex Wiring
2309-4922C Schematic Legend
2309-4902C Unit Mounted Wye Delta Starter (Applicable to Circuit 1 & 2)
2309-4917B Purge (Applicable to Circuit 1 & 2)
2309-4924A Unit Controls Schematic (Page 1 & 2)
2309-4955A System Controls Schematic (Page 1 & 2)
2309-4956A Options Schematic (Page 1 & 2)
2309-4961A Connection Diagram LH Panel
2309-4941A Connection Diagram RH Panel
2309-4957A Connection Diagram - Trane Starter - Circuit 1
Page 1 of 2
2309-4957A Connection Diagram - Trane Starter - Circuit 1
Page 1 of 2
2309-4958A Connection Diagram - Customer Starter - Circuit 1
2309-4958A Connection Diagram - Customer Starter - Circuit 2
43

44
Electrical
Information
Trane Supplied
Remote Starter
Trane Supplied Starters Wiring
Standard Field Power wiring: Reference Field connection diagram 2309-4957
Note: All wiring to be in accordance with National Electrical Code and any local codes.
This information is applicable to the starter 1 for Compressor 1 as well as starter 2 for compressor 2. (For wire
estimation purposes please double the below list as there are two starters to be wired)
Table 10
Line Power wiring To Starter Panel
(to Starter Panel) Terminals
3-Phase Line Voltage: Terminal Block 2X3-L1, L2, L3, All wiring to be in
and GROUND accordance with
National Electrical
Code and any
local codes.
3-Phase Line Voltage: Circuit Breaker 2Q1-L1,L2,L3,
and GROUND
Starter to Motor Power Wiring Starters Motor
Remote Starter to T1 through T6 terminals T1 through T6 terminals
Chiller Motor Junction Box
Starter to UCP To Starter From Unit Control
control wiring (120Vac) Panel Terminals Panel Terminations
120VAC Power Supply from starter to UCP 2X1-1-1, 1X1-1, #8 gauge
2X1-2 1X1-12 minimum
2X1-20(Ground) 1X1-18 (Ground) 40 amps circuit
High Pressure Cutout interlock 2X1-4, 1X1-4, 14 ga.
2X1-6 1X1-3
Oil Pump Interlock 2X1-7, 1A7-J2-4, 14 ga.
2X1-8 1A7-J2-2
Low Voltage Circuits To Starter From Unit Control
(less than 30VAC) Panel Terminals Panel Terminations
Standard Circuits
Inter Processor Communications (IPC) 2A1- J3-3 to 4, 1A1 –J5 1-2
Remote Mounted or 2X1-12 to 2 wire w/ ground
13 if present Shield ground at Comm link.
(do not ground 1X1- 22(GND) only.
shield at starter )
CDHF-SVN01B-EN

CDHF-SVN01B-EN
Electrical
Information
Customer Supplied
Remote Starter
Customer Supplied Starter
Standard Field Power wiring: Please refer to Trane Specification S6516-0513.
Note: All wiring to be in accordance with National Electrical Code and any local codes.
This information is applicable to the Starter 1 for Compressor 1 as well as Starter 2 for Compressor 2. (For wire
estimation purposes please double the below list as there are two starters to be wired)
Reference Field Connection Customer Supplied Starter diagram 2309-4958
Table 11
Line Power wiring Starter Panel
(to Starter Panel) Terminals
Starter by others See “Starter by All wiring to be in
Power wiring: others” schematic accordance with
National Electrical
Code and any
3-Phase Power Supply to Starter local codes.
Starter to Motor Power Wiring Starters Motor
Remote Starter to T1 through T6 T1 through T6
Chiller Motor Junction Box terminals terminals
Starter to UCP control wiring To Starter From Unit Control
(120VAC) Panel Terminals Panel Terminations
120VAC Power Supply from See “Starter by
starter to UCP others” schematic #8 gauge minimum
5X1-1, 1X1-1, 40 amps circuit
5X1-2 1X1-12
5X1-20 (ground) 1X1-18 (ground)
Power from UCP 1Q1 5X1-3 1X1-3, 1A23-J6-3 14 ga.
Interlock Relay signal 5X1-4 1A23-J10-1 14 ga.
Start contactor signal 5X1-5 1A23-J8-1 14 ga.
Oil Pump Interlock 5X1-7, 1A7-J2-4, 14 ga.
5X1-8 1A7-J2-2
Run Contactor signal 5X1-10 1A23-J6-12 14 ga.
Transition Complete 5X1-14 1A23-J12-2 14 ga.
Low Voltage Circuits To Starter From Unit Control
(less than 30VAC) Panel Terminals Panel Terminations
Standard Circuits
Current Transformers* (Required) 5CT4- wht, blk 1A23-J7-1,2
5CT5- wht, blk 1A23-J7-3,4, Note: Phasing must
5CT6- wht, blk 1A23-J7-5,6, be maintained
Potential Transformers* (Required) 5T17-236,237 1A23 –J5-1,2,
5T18-238,239 1A23 –J5-3,4, Note: Phasing must
5T19-240,241 1A23 –J5-5,6 be maintained
*see Table 12 (CT* wire sizes)
45

46
Electrical
Information
Customer Supplied
Remote Starter
Table 12 - Current Transformer and Potential Transformer Wire sizing tables for Customer Supplied starter to Chiller
Unit Control Panel Starter module 1A23.
The maximum recommended wire length for secondary CT leads in a dual CT system are:
Wire Maximum Wire Length Secondary CT Leads
AWG(mm 2 ) Feet Meters
8(10) 1362.8 415.5
10(6) 856.9 261.2
12(4) 538.9 164.3
14(2.5) 338.9 103.3
16(1.5) 213.1 65.0
17(1) 169.1 51.5
18(0.75) 134.1 40.9
20(0.5) 84.3 25.7
Note: 1. Wire lengths are for copper conductors only.
2. Wire lengths are total “one way” distance that the CT can be from the Starter module.
The maximum recommended total wire length for PT’s in a single PT system:
Wire Gauge Max lead length(ft) Max lead length (m)
8 5339 1627
10 3357 1023
12 2112 643
14 1328 404
16 835 254
17 662 201
18 525 160
20 330 100
21 262 79
22 207 63
The maximum recommended total wire length (to and from) for PT leads in a dual PT system are:
Max Wire Max Wire Max Wire Max Wire
Wire Length Length Length Length
Gauge Primary (ft) Primary (m) Secondary (ft) Secondary (m)
8 3061 933 711 217
10 1924 586 447 136
12 1211 369 281 85
14 761 232 177 53
16 478 145 111 33
17 379 115 88 26
18 301 91 70 21
20 189 57 44 13
21 150 45 34 10
22 119 36 27 8
Note: These wire lengths are for copper conductors only
Note: The above lengths are maximum round trip wire lengths. The maximum distance the PT can be located from
the Starter module is 1/2 of the listed value.
CDHF-SVN01B-EN

Line Power Supply Wiring
To assure that power supply wiring
to the starter panels are properly
installed and connected, review and
follow the guidelines outlined below.
Typical equipment room layouts are
shown in Figures 25 and 26.
3-Phase Power Source
1. Verify that the starter nameplate
ratings are compatible with the
power supply characteristics - and
with the electrical data on the CDHF
nameplate.
2. If the starter enclosure must be cut
to provide electrical access, exercise
care to prevent debris from falling
inside the enclosure.
CAUTION
Starter Damage!
Debris inside the starter panel may
cause an electrical short that
seriously damages the starter
components.
CDHF-SVN01B-EN
Electrical
Information
3. Use copper wire to connect the 3phase
power supply to the
remote-or-unit-mounted starter
panel.
CAUTION
Use Copper Conductors
Only!
Unit terminals are not designed to
accept other types of conductors.
Failure to use copper conductors
may result in equipment damage.
4. Size the power supply wiring in
accordance with NEC, using the RLA
value stamped on the chiller
nameplate and transformer load on
L1-and L2.
Note: All CDHF units are designed to
comply with NEC guidelines.
5. Make sure that the incoming
power wiring is properly phased;
each power supply conduit run to
the starter must carry the correct
leads to ensure equal phase
representation. See Figure 23.
Figure 23 - Proper Phasing for Starter Power Supply Wiring
Line Power
Wiring
6. As you install the power supply
conduit, make sure that its position
does not interfere with the
serviceability of any of the
components, nor with structural
members and equipment. Also,
assure that the conduit is long
enough to simplify any servicing that
may be necessary in the future (e.g.,
starter removal).
Note: Use flexible conduit to
enhance serviceability and minimize
vibration transmission.
Circuit Breakers and Fusible
Disconnects
In compliance with NEC guidelines,
size the circuit breaker or fused
disconnect, the chiller nameplate
max. fuse size or max. circuit breaker
size marking.
Note: Right hand and left hand
circuits may have different RLAs.
See unit nameplate.
7. Tightening torque. Follow starter
manufacturers torque specifications
and annual inspection methods.
Note: Connect L1, L2, L3 per starter
diagram.
47

Optional PFCCs
Power factor correction capacitors
(PFCCs) are designed to provide
power factor correction for the
compressor motor. Available as an
option for unit-mounted starters, and
remote-mounted starter.
48
Electrical
Information PFCC
Note: Remember that the PFCC
nameplate voltage rating must be
greater than or equal to the
compressor voltage rating stamped
on the unit nameplate. See Table 13
to determine what is appropriate for
each compressor voltage
application.
Table 13 - PFCC Design Voltage per Compressor Voltage Application
PFCC Compressor Motor Voltage
Design Voltage (See CDHF Nameplate)
240V/60 Hz 200V/60 Hz
208V/60 Hz
480V/60 Hz 380V/60 Hz
440V/60 Hz
460V/60 Hz
480V/60 Hz
600V/60 Hz 575V/60 Hz
600V/60 Hz
2400V/60 Hz 2300V/60 Hz
2400V/60 Hz
4160V/60 Hz 3300V/60 Hz
4000V/60 Hz
4160V/60 Hz
PFCC Compressor Motor Voltage
Design Voltage (See CDHF Nameplate)
480V/50 Hz 380V/50 Hz
440V/50 Hz
460V/50 Hz
480V/50 Hz
4160V/50 Hz 3300V/50 Hz
CAUTION
Equipment Damage!
PFCCs must be wired into the
starter correctly! Misapplication of
these capacitors could result in a
loss of motor overload protection
and subsequent motor damage.
PFCCs are wired as shown in Figure
24 where the capacitor leads are run
through the overload transformer.
CDHF-SVN01B-EN

Recommended Procedures for
Discharging Capacitors
Prior to performing any service on
energized equipment, the proper
Lockout-Tagout procedures must
always be followed. Regardless of
the equipment being serviced, the
following steps must be taken:
Lockout-Tagout Steps
1. Prepare the equipment for
shutdown.
2. Shut down the equipment.
3. Disconnect any energy isolating
devices.
4. Apply the necessary lockout or
tagout devices.
5. Render safe all stored or residual
energy.
6. Verify the isolation and deenergization
of the equipment.
Personal Protective Equipment
Always wear appropriate personal
protective equipment in accordance
with applicable regulations and/or
standards to guard against potential
electrical shock and flash hazards.
����� WARNING
Hazardous Voltage w/
Capacitors!
Disconnect all electric power,
including remote disconnects before
servicing. Follow proper lockout/
tagout procedures to ensure the
power cannot be inadvertently
energized. For variable frequency
drives or other energy storing
components provided by Trane or
others, refer to the appropriate
manufacturer’s literature for
allowable waiting periods for
discharge of capacitors. Verify with
an appropriate voltmeter that all
capacitors have discharged. Failure
to disconnect power and discharge
capacitors before servicing could
result in death or serious injury.
CDHF-SVN01B-EN
Electric
Information
Note: For additional information
regarding the safe discharge of
capacitors, see PROD-SVB06A-EN or
PROD-SVB06A-FR
Verifying Discharge of Capacitors
After following the proper lockouttagout
procedure it is important to
verify that all applicable capacitors
are discharged and rendered safe.
Many capacitors in HVAC equipment
include internal bleeder circuits that
will automatically discharge the
capacitor. These circuits must be
allowed sufficient time to discharge
the capacitor prior to performing
service.
While most capacitors contained in
Trane equipment include internal
bleeder circuits, this is not always the
case and these circuits can
sometimes fail. In addition, some
bleeder circuits can take up to 30
minutes to fully discharge. It is
important to verify that the
capacitor has been fully discharged
by using a voltmeter that is rated for
the voltage of the capacitor being
tested.
� � � � � WARNING
Live Electrical
Components!
During installation, testing, servicing
and troubleshooting of this product,
it may be necessary to work with
live electrical components. Have a
qualified licensed electrician or other
individual who has been properly
trained in handling live electrical
components perform these tasks.
Failure to follow all electrical safety
precautions when exposed to live
electrical components could result in
death or serious injury.
Discharging Capacitors
In the event that a capacitor does not
have an internal bleeder circuit, the
bleeder circuit has failed, or the
discharge process is not complete,
the capacitor must be discharged
properly prior to performing service.
In order to safely discharge a
capacitor, a proper capacitor
discharge tool must be used.
Screwdrivers and other hand tools
are not designed to safely discharge
capacitors. Use of these tools may
result in death or serious injury and/
or equipment damage.
49

50
Electric
Information
Figure 24 - PFCC Leads Routed thru Overload Current Transformer
Figure 25 - Typical Equipment Room Layout for CDHF with Unit-Mounted Starter
Notes:
1. Refer to the unit field connection diagram for approximate UCP knockout
locations.
Important: To prevent damage to the UCP’s components, do NOT route
control circuit conduit into the top of the UCP enclosure.
2. IPC circuit conduit must enter the left back portion of the UCP.
3. See Starter Submittal drawing for location of incoming wiring to the starter.
PFCC and Unit
Mounted Starter
CDHF-SVN01B-EN

Figure 26 - Typical Equipment Room Layout for CDHF with Remote-Mounted Starter
Notes:
1. Refer to the unit field connection for approximate UCP knockout locations.
Important: To prevent damage to the UCP’s components, do NOT route
control circuit conduit into the top of the UCP enclosure.
2. IPC circuit conduit must enter the left back portio nof the UCP.
CDHF-SVN01B-EN
Electrical
Information Remote Starter
51

Starter to Motor (Remote-
Mounted Starters)
Reference Table 17-43 and 44.
Ground Wire Terminal Lugs.
Ground wire lugs are provided in the
motor terminal box, and in the
starter panel.
Terminal Clamps. Terminal clamps
are supplied with the motor
terminals to accommodate either
bus bars or standard motor terminal
wire lugs. Terminal clamps provide
additional surface area to minimize
the possibility of improper electrical
connections.
Figure 27 - Terminal Stud, Clamp and Lug Assembly
52
Electrical
Information
Wire Terminal Lugs. Wire terminal
lugs must be field-supplied.
1. Use field-provided crimp-type wire
terminal lugs properly sized for the
application.
Note: Wire size ranges for the
starter-line and load-side wire lugs
are listed on the starter submittal
drawings supplied by the starter
manufacturer. Carefully review the
submitted wire lug sizes for
compatibility by the electrical
engineer or contractor.
Remote Starter
2. A terminal clamp with a 3/8” bolt
is provided on each motor
terminal stud; use the factorysupplied
Belleville washers on the
wire lug connections.
Figure 27 illustrates the juncture
between a motor connection pad
and the wire terminal lug.
3. Tighten each bolt to 24 footpounds.
4. Install but do not connect the
power lead between the starter
and compressor motor.) These
connections will be completed
under supervision of a qualified
Trane service engineer after the
prestart inspection).
Bus Bars. Install bus bars between
the motor terminals when a lowvoltage
“across-the-line”, “primary
reactor/resistor” or “auto
transformer” starter is used.
Be sure to jumper motor Terminal T1
to T6, T2 to T4, and T3 to T5.
Bus bars and extra nuts are available
as a Trane option.
Note: Bus bars are not needed in
medium or high-voltage applications
since only 3 terminals are used in the
motor and starter.
CDHF-SVN01B-EN

Starter to UCP (Remote-
Mounted Starters Only)
Electrical connections required
between the remote-mounted starter
and the chiller control panel (UCP)
are outlined in Table 10 or 11, as
applicable.
Note: Install separate conduit
between the volt circuits; and the
UCP to the starter for the IPC circuit.
When sizing and installing the
electrical conductors for these
circuits, follow these guidelines.
CAUTION
Starter Damage!
Debris inside the starter panel may
cause an electrical short that
seriously damages the starter
components.
1. If the starter enclosure must be cut
to provide electrical access,
exercise care to prevent debris
from falling inside the enclosure.
2. Use only shielded twisted pair for
the IPC circuit between the starter
and the UCP on remote mounted
starters. Recommended wire is
Beldon Type 8760, 18 AWG for
runs up to 1000 feet.
CDHF-SVN01B-EN
Electrical
Information
Note: The polarity of the IPC wire
pair is critical for proper operation.
3. Separate low-voltage (less than
30V) wiring from the 115V wiring
by running each in its own
conduit.
4. As you route the IPC circuit out of
the starter enclosure, make sure
that it is at least 6” from all wires
carrying a higher voltage.
5. The IPC Shielded Twisted Pair
wiring should be grounded on one
end only at UCP end.
The other end should be unterminated
and taped back on the
cable sheath to prevent any contact
between shield and ground.
6. Oil Pump Interlock - Both starters
must provide an interlock [N.O.]
contact with the chiller oil pump
connected to the UCP at Terminals
1A7-J2-4 and 1A7-J2-2 [14 ga] in
each control panel. The purpose of
this interlock is to power the oil
pump on the chiller in the event
that a starter failure, such as
welded contacts, keeps the chiller
motor running after the controller
interrupts the run signal.
Starter to UCP
Control Wiring
CAUTION
Electrical Noise!
To ensure that electrical noise does
not distort the signals carried by the
low-voltage wiring, including the
IPC, maintain at least 6” between
low-voltage (

Left Hand Control Panel
54
Electrical
Information
Control Circuit
Wiring
Table 14 - UCP Control Wiring 120Vac
Standard Unit Control Input or All wiring to be
120 Vac Control Circuits: Panel Terminations Output Type in accordance with
National Electrical
Code and any
local codes.
Contacts
Chilled Water Flow Proving Input 1X1-5 to 1A6-J3-2 Binary Input Normally Open,
closure with flow
Condenser Water Flow Proving Input 1X1-6 to 1A6-J2-2 Binary Input Normally Open,
closure with flow
Chilled Water Pump Relay Output 1A5-J2- 4 to 6 Binary Output Normally Open
Condenser Water Pump Relay Output 1A5-J2-1 to 3 Binary Output Normally Open
Optional
Control Circuits status outputs
Ice Making Relay Output 1A5-J2-10 to 12 Binary Output Normally Open
* PROGRAMABLE OUTPUTS
defaults:
Chiller Non-Latching Alarm Relay Output 1A8-J2-1 to 3 Binary Output Normally Open
Chiller Limit Mode Relay Output 1A8-J2-4 to 6 Binary Output Normally Open
Chiller Latching Alarm Relay Output 1A8-J2-7 to 9 Binary Output Normally Open
Chiller Running Relay Output 1A8-J2-10 to 12 Binary Output Normally Open
Maximum Capacity Relay Output 1A9-J2-1 to 3 Binary Output Normally Open
Chiller Head Relief Request Relay Output 1A9-J2-4 to 6 Binary Output Normally Open
Circuit 2 Purge Alarm Relay Output 1A9-J2-7 to 9 Binary Output Normally Open
Circuit 1 Purge Alarm Relay Output 1A9-J2-10 to 12 Binary Output Normally Open
Alternates;
Circuit 1 Running
Circuit 2 Running
Chiller Alarm
Circuit 1 Alarm
Circuit 2 Alarm
Purge Alarm
* Defaults as Factory programed; Alternates can be selected at startup using service tool.
CDHF-SVN01B-EN

Left Hand Control Panel
CDHF-SVN01B-EN
Electrical
Information
Control Circuit
Wiring
Table 15 - UCP Control Wiring less than 30 Vac
Standard
Low Voltage Circuits Unit Control Input or
(less than 30VAC) Panel Terminations Output Type
External Auto Stop Input 1A13-J2-1 to 2 Binary Input Closure required for
normal operation
Emergency Stop Input 1A13-J2-3 to 4 Binary Input Closure required for
normal operation
Circuit 1 External Lockout 1A25-J2-1 to 2 Binary Input Closure required for
circuit lockout.
Circuit 2 External Lockout 1A25-J2-3 to 4 Binary Input Closure required for
circuit lockout.
Optional
Low Voltage Circuits
External Base Loading Enable Input 1A18-J2-1 to 2 Binary Input Normally Open
External Hot Water Control Enable Input 1A18-J2-3 to 4 Binary Input Normally Open
External Ice Machine Control Enable Input 1A19-J2-1 to 2 Binary Input Normally Open
% RLA Compressor 1 Output
(Circuit 1 Left Panel 1A15 ) 1A15-J2-1 to 3 Left Panel Analog Output 2-10 vdc
External Condenser Pressure Output
(Circuit 1 Left Panel 1A15 ) 1A15-J2-4 to 6 Left Panel Analog Output 2-10 vdc
External Current Limit Setpoint Input 1A16-J2-2 to 3 Analog Input 2-10 vdc, or 4-20 mA
External Chilled Water Setpoint 1A16-J2-5 to 6 Analog Input 2-10 vdc, or 4-20 mA
External Base Load Setpoint Signal 1A17-J2-2 to 3 Analog Input 2-10 vdc, or 4-20 mA
Generic Refrigerant Monitor input 1A17-J2-5 to 6 Analog Input 2-10 vdc, or 4-20 mA
Outdoor Air Temperature sensor IPC bus Connection Communication
and sensor and sensor.
Tracer Comm 4 Interface 1A14 1A14-J2-1(+) to 2(-) Communication
[note Comm 4 requires two modules; 1A14-J2-3(+) to 4(-) to Tracer
one is mounted in each panel] Left Panel
Tracer Comm 5 Interface 1A14-J2-1(+) to 2(-) Communication
[future, one Comm 5 module; 1A14-J2-3(+) to 4(-) to Tracer
left panel only] Left Panel only
Right Hand Control Panel
Optional
Low Voltage Circuits [right panel]
% RLA Compressor 2 Output 1A15-J2-1 to 3
(Circuit 2 Right Panel 1A15 ) Right Panel Analog Output 2-10 vdc
External Condenser Pressure Output
(Circuit 2 Right Panel 1A15 ) 1A15-J2-4 to 6 Right Panel Analog Output 2-10 vdc
Tracer Comm 4 Interface 1A14 1A14-J2-1(+) to 2(-) Communication
[note Comm 4 requires two modules; 1A14-J2-3(+) to 4(-) to Tracer
one is mounted in each panel] Right Panel
55

System Control Circuit Wiring
Water Pump Interlock Circuits
and Flow Switch Input
Chilled Water Pump. Wire the
evaporator water pump contactor
(5K1) to a separate 120 volt single
phase power supply with 14 AWG,
600 volt copper wire, then connect
this circuit to 1A5-J2-6. Then use
1A5-J2-4 120 VAC output to allow the
UCP to control the evaporator water
pump, or wire the 5K1 contactor to
operate remotely and independently
of the UCP. (Left panel only.)
Chilled Water Proof of Flow
Wire the auxiliary contacts of the
evaporator water pump contactor
(5K1) in series with the flow switch
(5S1) installed in the evaporator
supply pipe. Use 14 AWG, 600-volt
copper wire.
Connect this circuit to UCP terminals
lX1-5 to 1A6-J3-2. (Left panel only.)
When installed properly, the chilled
water interlock circuit will only allow
compressor operation if the
evaporator pump is running and
providing at least the minimum
water flow required.
56
Electrical
Information
Condenser Water Pump. Wire the
condenser water pump contactor
(5K2) to a separate 120-volt, singlephase
power supply with 14 AWG,
600-volt copper wire; then connect
this circuit to UCP terminals 1A5-J2-
3. Then use 1A5-J2-1 120 VAC output
to allow UCP to control the
condenser pump. (Left panel only.)
Condenser Water Proof of Flow
Next, use 14 AWG, 600-volt copper
wire to connect the auxiliary contacts
of the condenser water pump
contactor (5K2) in series with the
flow switch (5S2) installed in the
condenser supply pipe.
Connect this circuit to UCP terminals
1X1-6 to 1A6-J2-2. (Left panel only.)
When installed properly, the
condenser water lock circuit will only
allow the compressor to operate if
the condenser pump is running and
providing at least the minimum
water flow required.
System Control
Wiring
Temperature Sensor Circuits
All temperature sensors are factoryinstalled
except the optional outdoor
air temperature sensor. This sensor
is required for the outdoor air
temperature type of chilled water
reset. Follow the guidelines below to
locate and mount the outdoor air
temperature sensor. Mount the
sensor probe where needed,
however, mount the sensor module
in the UCP.
The outdoor temperature sensor
similar to the unit mounted
temperature sensors in that it
consists of the sensor probe and the
module. A four-wire IPC bus is
connected to the module for 24 vdc
power and the communications link.
We recommend mounting the
sensor module within the UCP and
the sensor two wire leads be
extended and routed to the outdoor
temperature sensor probe sensing
location. This assures the four wire
IPC bus protection and provides
access to the module for
configuration at start-up.
CDHF-SVN01B-EN

CDHF-SVN01B-EN
Electrical
Information
The sensor probe lead wire between
the sensor probe and the module
can be separated by cutting the two
wire probe lead leaving equal
lengths of wire on each device; the
sensor probe and the sensor
module. Note this sensor and
module are matched and must
remain together or inaccuracy may
occur. These wires can then be
spliced to with two 14-18 AWG 600V
wires of sufficient length to reach the
desired outdoor location, maximum
length 1000 feet (305 meters). The
module four-wire bus must be
connected to the UCP four-wire bus
using the Trane approved
connectors provided.
The sensor will be configured (given
its identity and become functional) at
start-up when the serviceman
performs the start-up configuration.
It will not be operational until that
time.
System Control
Wiring
Note: If shielded cable is used to
extend the sensor leads, be sure to
tape off the shield wire at the
junction box and ground it at the
UCP. If the added length is run in
conduit, do not run them in the same
conduit with other circuits carrying
30 or more volts.
CAUTION
Electrical Noise!
MAINTAIN AT LEAST 6 INCHES
BETWEEN LOW-VOLTAGE (

Optional Relay Circuits
Optional Control and Output Circuits
Install various optional wiring as
required by the owner’s
specifications.
Optional Tracer
Communication Interface
This control options allows the UCP
to exchange information such as
chiller status and operating set
points with a Tracer system.
Note: The circuit must be run in
separate conduit to prevent electrical
noise interference.
Additional information about the
Tracer Comm option is published in
the installation manual and
operator’s guide that ships with the
Tracer.
See Table 15 for Tracer Connections.
Note: Comm 4 will require Tracer to
be connected to each panel for
individual circuit information.
(Comm 5 will require connections to
the left panel only when available.
58
Electrical
Information
Unit Start-Up
All phases of initial unit start-up must
be conducted under the supervision
of a qualified Trane local service
engineer. This includes pressure
testing, evacuation, electrical checks,
refrigerant charging, actual start-up
and operator instruction.
Advance notification is required to
assure that initial start-up is
scheduled as close to the requested
date as possible.
Starter Module Configuration
The starter module configuration
settings will be checked (and
configured for Remote Starters)
during start-up commissioning. To
configurate starter modules, and
perform other starter checks, it is
recommended that the line voltage
three phase power be turned off and
secured (locked out), and then a
separate source control power (115
vac) be utilized to power up the
control circuits. To do this, remove
control coil circuit fuse, typically 2F4,
and then connect separate source
power cord to starter terminal block
1X1-5 (L1), 1X1-17 (L2), and Ground.
This needs to be done in each panel.
Use the “as-built starter schematic”
to assure correct fuse and terminals.
Verify correct fuse is removed,
control circuit connections are
correct, then apply the 115 vac
separate source power to service the
controls.
System Control
Wiring
Forms Information
Samples of start-up and operating
forms along with other helpful forms
are found in the Operation
Maintenance manual which can be
obtained from the nearest Trane
office.
It is recommended that the
serviceman contact the local Trane
office to obtain the most recent
printing date of the form. The forms
in the operation and maintenance
manual are only current at the time
of printing of the manual.
After obtaining the most recent form,
complete all the information and
forward it to your local Trane office.
CDHF-SVN01B-EN

CDHF-SVN01B-EN
59

60
CDHF-SVN01B-EN

CDHF-SVN01B-EN
61

62
CDHF-SVN01B-EN

CDHF-SVN01B-EN
63

64
CDHF-SVN01B-EN

CDHF-SVN01B-EN
65

66
CDHF-SVN01B-EN

CDHF-SVN01B-EN
67

68
CDHF-SVN01B-EN

CDHF-SVN01B-EN
69

70
CDHF-SVN01B-EN

CDHF-SVN01B-EN
71

72
CDHF-SVN01B-EN

CDHF-SVN01B-EN
73

74
CDHF-SVN01B-EN

CDHF-SVN01B-EN
75

76
CDHF-SVN01B-EN

CDHF-SVN01B-EN
77

78
CDHF-SVN01B-EN

CDHF-SVN01B-EN
79

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
Stocking Location
CDHF-SVN01B-EN
SV-RF-CTV-CDHF-SVN01B-EN-105
CDHF-SVN01A-EN
La Crosse
Trane has a policy of continuous product and product data improvement and reserves the right to change
design and specifications without notice.
Only qualified technicians should perform the installation and servicing of equipment referred to in this
publication.