Insulated Control Dampers, Model ICD - Greenheck

Insulated Control Dampers
Models ICD
• Thermally Insulated • Reduced Condensation
• Reduced heat transfer or cold penetration
1
March
2012

Insulated Control Dampers
®
Greenheck’s ICD series of dampers was developed for applications where it is necessary to minimize
the transfer of heat or cold penetration and reduce condensation. The thermally broken frame provides
an insulating barrier in the ductwork. Thermally broken blades separate the warm and cold air inside the
ductwork. Silicone jamb seals effectively seal the penetration of air from one side of the blade to the other.
Design Features
Variable Symmetric Blade Design (VSB)
Greenheck’s Variable Symmetrical Blade (VSB) design
uses a combination of three symmetrical blade sizes (4,
5, and 6 inch) to maximize the free area at any damper
height by reducing blade stop height. Traditional damper
designs use a single blade width that requires oversized
blade stops, limiting free area when the blades are
open. The VSB design allows for consistent operating
characteristics regardless of airflow direction.
• Increases Mounting Flexibility - Symmetrical blades
have identical operating characteristics regardless
of airflow direction. This allows a Greenheck control
damper to be mounted in either direction of flow, an
advantage when installing with space constraints.
• Increases Free Area - Traditional damper designs
with a single blade width require oversized blade stops,
limiting free area when the blades are open (Figure 1).
Greenheck is able to reduce blade stop height, which
maximizes free area, and increases damper
performance. AMCA certified pressure
drop lets you know that the published data
is accurate to help you better design your
system.
• Reduces Actuator Torque - If an unsymmetrical
blade closes against airflow, a large amount of torque
is needed because the air distribution is unbalanced.
Greenheck’s VSB design balances airflow on each side
of a symmetrical blade, reducing the torque required to
operate the damper. The use of symmetrical blades has
allowed Greenheck to reduce the sizes and quantities of
actuators used on our dampers.
The ICD series damper blades feature thermally broken
airfoil shaped blade with polyurethane foam.
Airflow works
against
actuator
Actuator
Torque
Unbalanced Blade
Requires Higher Torque
Airflow works
against
actuator
Airflow
works with
actuator
Actuator
Torque
Balanced Blade
Requires Less Torque
Parallel versus Opposed Blade Operation
Greenheck’s ICD series dampers are offered with either
opposed or parallel blade operation. Parallel blade
orientation is typically used when the damper operates
in two positions, open or closed. The damper blades
open or close in the same direction. Opposed blade
orientation is typically used on dampers that modulate
airflow. Adjacent damper blades will open or close
opposite one another.
1/2 in.
(13mm)
1/2 in.
(13mm)
1/2 in.
(13mm)
1/2 in.
(13mm)
2
5 in.
(127mm)
5 in.
(127mm)

Insulated Control Dampers
®
Design Features
Frame
There are four frame types available:
• Quick Connect for easy connection to duct
• Channel
• Single Flange
• Reversed Flange
The ICD-44 features an extruded aluminum frame.
The ICD-45 features an aluminum frame with two
polyurethane resin gaps and insulated on four sides
with polystyrene.
Quick
Connect
Channel
Single
Flange
Reverse
Flange
Linkage
Greenheck’s ICD series dampers have blade linkage
concealed in the insulated frame. This prevents any
transfer point for cold or heat, unlike some of our
competitor’s products. The linkage is engineered to
accurately control each and every blade without need
for adjustment.
No Top or Bottom
ICD series dampers are designed for installation in
any position with the blades horizontal. As shown, the
damper can be turned over so the actuator is on the left
or right side.
Blade & Jamb Seals
Silicone blade and jamb seals stay flexible in cold
temperatures.
The ICD-44 features silicone blade seal with 304SS
jamb seals with optional silicone jamb seals. The
ICD-45 features silicone blade and jamb seals.
Bearings
Dual bearing with acetal inner sleeve and flanged outer
bearing features no metal-to-metal or metal-to-plastic
contact.
3

Quick Selection Chart
®
Maximum Velocity ft/min. (m/s)
ICD-44
4000
(20.3)
ICD-45
4000
(20.3)
Maximum Pressure in. wg (kPa) 8 (2) 8 (2)
Temperature range °F (°C)
Frame
Frame Gauge
-70 to 200
(-56 to 93)
-70 to 200
(-56 to 93)
Insulated Thermally Broken Aluminum - X
Aluminum X -
.125 in.
(3.2mm)
.125 in.
(3.2mm)
Channel X O
Frame Type
Quick Connect O X
Reverse Flange O O
Single Flange O O
Blade Action
Parallel O O
Opposed X X
Blade Type Insulated Thermally Broken X X
Blade Material Extruded Aluminum Airfoil X X
Blade Seal Silicone X X
Jamb Seal
304SS X -
Silicone O X
Axle Bearings Dual Bearing with Acetal Inner Sleeve X X
Axle Material
Plated Steel X X
304SS O O
Linkage
Plated Steel X X
304SS O O
Anodize O O
Baked Enamel O O
Epoxy O O
Paint Finishes* Hi Pro Polyester O O
Industrial Epoxy O O
Kynar/Hylar (70%) O O
Permatector O O
Sizing
Inches (mm)
Minimum Size
Channel, Single or
Reverse Flange
Quick Connect
Maximum Single Section Size
Maximum Multi
Section Size
Channel, Single or
Reverse Flange
Quick Connect
* Additional lead time is required. Consult factory.
12 x 7
(305 x 178)
12 x 6
(305 x 152)
48 x 74
(1219 x 1880)
144 x 148
(3658 x 3759)
96 x 148
(2438 x 3759)
12 x 7
(305 x 178)
12 x 6
(305 x 152)
48 x 74
(1219 x 1880)
144 x 120
(3658 x 3048)
96 x 120
(2438 x 3048)
4

Damper Performance
Testing Criteria
®
Thermal Performance
During thermal performance test, per ASTM Standard C1363-97
conducted at Architectural Testing Laboratories (ATI), the ICD-45
outperformed competitor’s thermally broken dampers.
(Report #53166.01-201-46)
Dry Ice Test
The thermal breaks in the damper blades and frame reduce the
transfer of heat from the “cool side” to the “warm side”. When
compared to a standard airfoil blade design, ICD airfoil blade,
with thermal breaks, prevents ice from forming on the opposite
side of the blade.
Specimen Thermal Resistance (R value)
Greenheck
ICD-45
Brand A
Brand B
Leakage Test
ICD series dampers meet the IECC (International Energy Conservation Code) requirements for damper
leakage ratings of at 3 cfm/ft 2 @ 1 in. wg (54.8 cmh/m 2 @ .25 kPa) or less when integral to the building
envelope. Leakage testing was performed at Environ Laboratories at a temperature of -40°F. The ICD-45 was
rated at less than 3 cfm/ft 2 @ 1 in. wg (54.8 cmh/m 2 @ .25 kPa) or 8 cfm/ft 2 @ 4 in. wg (146.3 cmh/m 2 @ 1 kPa).
Comparing a 36 in. x 36 in. (914mm x 914mm) damper, Greenheck’s ICD series has the lowest leakage in the
industry.
Greenheck
Brand A
Brand B
5

Damper Performance
Testing Criteria
®
Pressure drop testing was conducted in accordance with AMCA Standard 500-D using the three
configurations shown. All data has been corrected to represent standard air at a density of
.075 lb/ft 3 (1.201 kg/m 3 ).
Actual pressure drop found in any HVAC system is a combination of many factors. This pressure drop
information along with an analysis of other system influences should be used to estimate actual pressure
losses for a damper installed in a given HVAC system.
Figure 5.3 Illustrates a fully ducted damper. This configuration has the lowest pressure drop of the three
test configurations because entrance and exit losses are minimized by straight duct runs upstream and
downstream of the damper.
Figure 5.2 Illustrates a ducted damper exhausting air into an open area. This configuration has a lower
pressure drop than Figure 5.5 because entrance losses are minimized by a straight duct run upstream of the
damper.
Figure 5.5 Illustrates a plenum mounted damper. This configuration has the highest pressure drop because
of extremely high entrance and exit losses due to the sudden changes of area in the system.
5D
6D
Figure 5D 5.3
6D
5D
re 5.3
Figure 5D 5.2
Figure 5.5
re 5.2
D=
4 (W) (H)
3.14
D=Duct length
W=Damper width
H=Damper height
Figure 5.5
4 (W) (H) When comparing a 24 in. x 24 in. (610mm x 610mm)
3.14 damper, Greenheck’s ICD series has the lowest
pressure drop in the industry which means lower fan
cost or smaller damper size required.
Brand B
Brand A
Greenheck
6

Damper Performance
Testing Criteria
®
Dimension
Inches (mm)
Velocity -
ft/min. (m/s)
AMCA Figure 5.2 Pressure Drop
12 x 12
(305 x 305)
24 x 24
(610 x 610)
36 x 36
(914 x 914)
Pressure Drop - in. wg (Pa)
12 x 48
(305 x 1219)
48 x 12
(1219 x 305)
500 (2.5) .03 (7.5) .02 (5) .01 (2.5) .01 (2.5) .03 (7.5)
1000 (5.1) .11 (27.4) .08 (19.9) .05 (12.5) .06 (14.9) .14 (34.8)
1500 (7.6) .25 (62.3) .19 (47.3) .11 (27.4) .14 (34.8) .32 (79.7)
2000 (10.2) .45 (112) .34 (84.7) .21 (52.3) .25 (62.3) .57 (142)
2500 (12.7) .71 (176.9) .53 (132) .33 (82.2) .40 (99.6) .89 (221.7)
3000 (15.2) 1.03 (256.6) .77 (191.8) .47 (117.1) .57 (142) 1.29 (321.3)
3500 (17.8) 1.40 (348.7) 1.05 (261.5) .64 (159.4) .78 (194.3) 1.76 (438.4)
4000 (20.3) 1.83 (455.8) 1.37 (341.3) .84 (209.2) 1.02 (254.1) 2.30 (572.9)
Dimension
(in.)
Velocity -
ft/min. (m/s)
AMCA Figure 5.3 Pressure Drop
12 x 12
(305 x 305)
24 x 24
(610 x 610)
36 x 36
(914 x 914)
Pressure Drop - in. wg (Pa)
12 x 48
(305 x 1219)
48 x 12
(1219 x 305)
500 (2.5) .01 (2.5) .01 (2.5) .01 (2.5) .01 (2.5) .04 (10)
1000 (5.1) .04 (10) .03 (7.5) .02 (5) .02 (5) .06 (14.9)
1500 (7.6) .09 (22.4) .08 (19.9) .04 (10) .06 (14.9) .14 (34.8)
2000 (10.2) .17 (42.3) .14 (34.8) .08 (19.9) .10 (24.9) .25 (62.3)
2500 (12.7) .26 (64.7) .22 (54.8) .12 (29.9) .17 (42.3) .40 (99.6)
3000 (15.2) .38 (94.6) .32 (79.7) .18 (44.8) .24 (59.8) .58 (144.5)
3500 (17.8) .52 (129.5) .43 (107.1) .24 (59.8) .33 (82.2) .79 (196.7)
4000 (20.3) .67 (166.9) .57 (142) .32 (79.7) .43 (107.1) 1.03 (256.6)
Dimension
(in.)
Velocity -
ft/min. (m/s)
AMCA Figure 5.5 Pressure Drop
12 x 12
(305 x 305)
24 x 24
(610 x 610)
36 x 36
(914 x 914)
Pressure Drop - in. wg (Pa)
12 x 48
(305 x 1219)
48 x 12
(1219 x 3050
500 (2.5) .05 (12.5) .05 (12.5) .03 (7.5) .04 (10) .05 (12.5)
1000 (5.1) .23 (57.3) .21 (52.3) .14 (34.8) .18 (44.8) .22 (54.8)
1500 (7.6) .52 (129.5) .47 (117.1) .33 (82.2) .42 (104.6) .51 (127)
2000 (10.2) .93 (231.7) .84 (209.2) .58 (144.5) .74 (184.3) .90 (224.2)
2500 (12.7) 1.44 (358.7) 1.32 (328.8) .91 (226.7) 1.16 (288.9) 1.41 (351.2)
3000 (15.2) 2.08 (518.1) 1.9 (473.3) 1.31 (326.3) 1.68 (418.5) 2.04 (508.1)
3500 (17.8) 2.83 (704.9) 2.59 (645.1) 1.79 (445.9) 2.28 (567.9) 2.78 (692.5)
4000 (20.3) 3.70 (921.6) 3.39 (844.4) 2.34 (582.9) 2.98 (742.3) 3.70 (921.6)
Greenheck Fan Corporation certifies that the model
ICD-44 and ICD-45 shown herein is licensed to
bear the AMCA Seal. The ratings shown are based
on tests and procedures performed in accordance
with AMCA Publication 511 and comply with
the requirements of the AMCA Certified Ratings
Programs. The AMCA Certified Ratings Seal applies
to air performance ratings only.
7

The Greenheck Difference
Greenheck dampers bring the same quality engineering and manufacturing that has earned
Greenheck its position as an industry leader. Aggressive research and development keeps
Greenheck a major player in the damper and louver industry.
Greenheck has the most UL classified dampers and largest
selection of AMCA licensed dampers and louvers in the
industry.
In-House Testing
State-of-the-art laboratory and testing facilities have always
been important to Greenheck’s continuing business success.
A laboratory facility devoted exclusively to development and
testing of damper and louver related products for testing to
the latest versions of AMCA, ANSI, ASHRAE, UL, Miami-Dade
County, and other industry standards of performance.
Enjoy Greenheck’s extraordinary service, before, during
and after the sale.
Greenheck offers added value to our wide selection of top performing, energy-efficient products
by providing several unique Greenheck service programs.
• Our Quick Delivery Program ensures shipment of our in-stock products within 24 hours of
placing your order. Our Quick Build made-to-order products can be produced in 1-3-5-10- or
15-day production cycles, depending upon their complexity.
• Greenheck’s free Computer Aided Product Selection program (CAPS), rated by many as
the best in the industry, helps you conveniently and efficiently select the right products for the
challenge at hand.
• Greenheck has been Green for a long time! Our energy-saving products and ongoing
corporate commitment to sustainability can help you qualify for LEED credits.
• Our 3D service allows you to download at no charge lightweight, easy-to-use AutoDesk
Revit 3D drawings for many of our ventilation products.
Find out more about these special Greenheck services at greenheck.com
Our Warranty
Greenheck warrants this equipment to be free from defects in material and workmanship for a period
of one year from the shipment date. Any units or parts which prove defective during the warranty
period will be replaced at our option when returned to our factory, transportation prepaid. Motors are
warranted by the motor manufacturer for a period of one year. Should motors furnished by Greenheck
prove defective during this period, they should be returned to the nearest authorized motor service
station. Greenheck will not be responsible for any removal or installation costs.
As a result of our commitment to continuous improvement, Greenheck reserves the right to change
specifications without notice.
Prepared to Support
Green Building Efforts
P.O. Box 410 • Schofield, WI 54476-0410 • Phone (715) 359-6171 • greenheck.com
00.DMP.1005 R2 3-2012 IP
Copyright © 2012 Greenheck Fan Corp.