P.O. Box 410
Schofield, WI  54476

Phone:  715.359.6171
www.greenheck.com

Product Specification Guide
Model ICD-44 and ICD-45 Control Dampers
Facility Service Subgroup: Division 23 HVAC (Previously Division 15)

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Note to User: This document is subject to copyright protection and is proprietary to Greenheck Fan Corporation.  However, Greenheck Fan Corporation authorizes the user a limited non-exclusive license to use this document or portions of it for the purpose of preparing written product specifications for the above CSI MasterFormat category.  All information in this document as provided by Greenheck Fan Corporation is informational in nature and is provided without representation or warranty of any kind as to the user or any other party, including, without limitation, ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSE, OR NON-INFRINGEMENT.  To the greatest extent permitted by applicable law, Greenheck Fan Corporation assumes no liability, and User assumes all liability and risk, for the use or results from the use of this document or the information contained herein, whether as modified by the user or not.  Users should consult www.greenheck.com to verify that this document represents the most current version.

Specifier Notes:  This product guide specification is written according to the Construction Specifications Institute (CSI) Format - 2004 Edition.

The section must be carefully reviewed and edited by the Engineer to meet the requirements of the project and local building code.  Coordinate with other specification sections and the drawings.

Delete all unnecessary “Specifier Notes” when editing this section.

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PART 1   GENERAL

1.1	WORK INCLUDED

A.	Extruded aluminum control damper with expanded polyurethane foam thermally broken control dampers suitable for application in HVAC systems with velocities up to 4000 feet per minute (20.32 m/s). Suitable for performance at temperatures as low as -70° F (-56° C).

1.2	RELATED WORK
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Specifier Notes: Edit the following list as required for the project.  List other sections with work directly related to the dampers. ********************************************************************************************
A.	Section 233300 Air Duct Accessories (Formerly 15810 – Ducts)

B.	Section 230913 – HVAC Instrumentation and Controls: Actuators and Operators; Control Dampers (Formerly 15900 – HVAC Instrumentation and Controls: Connections to actuator)

1.3	REFERENCES
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Specifier Notes: List standards referenced in this section, complete with designations and titles.  This article does not require compliance with standards, but is merely a listing of those used. ********************************************************************************************

A.	AMCA 500-D – Laboratory Methods for Testing Dampers for Ratings

B.	AMCA 511 – Certified Ratings Program for Air Control Devices

C.	ASTM C1363-97 – Thermal performance test in accordance with Architectural Testing Laboratories (ATI)

D.	IECC – International Energy Conservation Code

E.	ASHRAE Standard 62 – Ventilation for Acceptable Indoor Air Quality

1.4	SUBMITTALS

A.	Comply with requirements of Section 23330 – Submittal Procedures.

B.	Product Data: Submit manufacturer’s product data.
1.	Include leakage, velocity, pressure drop, maximum pressure data and energy efficiency performance.
2.	Indicate materials, construction, and dimensions.
3.	Include pressure drop data for all damper sizes in accordance with AMCA 500-D test figures 5.2 (Ducted Inlet, Free Outlet), 5.3 (Ducted Inlet, Ducted Outlet) and 5.5 (Free Inlet, Free Outlet).
4.	Include a copy of Installation Instructions.

1.5	QUALITY ASSURANCE

A.	Dampers shall bear the AMCA Certified Ratings Seal for Air Performance Air Leakage and Efficiency in accordance with AMCA 511.

1.6	DELIVERY, STORAGE, AND HANDLING

A.	Delivery: Deliver materials to site in manufacturer’s original, unopened containers and packaging, with labels clearly indicating manufacturer, material, and location of installation.

B.	Storage: Store materials in a dry area indoor, protected from damage, and in accordance with manufacturer’s instructions.

C.	Handling: Handle and lift dampers in accordance with manufacturer’s instructions.  Protect materials and finishes during handling and installation to prevent damage.

PART 2   PRODUCTS

2.1	MANUFACTURER

A.	Greenheck, PO Box 410, Schofield, Wisconsin 54476-0410.  Phone (715)359-6171.  Fax (715)355-6458.  Web Site www.greenheck.com.

2.2	THERMAL ISOLATION CONTROL DAMPER

A.	Model: ICD-44 and ICD-45

B.	Ratings

1.	Leakage: 
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•	Dampers shall have a maximum leakage of Class 1 @ 4 in. wg or Class 1A @ 1 in. wg as defined by AMCA (Leakage class 1 is defined as 8 cfm/ sq. ft. @ 4 in. wg and class 1A is defined as 3 cfm/ sq. ft. @ 1 in. wg. at -40°F). Tested in accordance with AMCA standard 500-D.
•	Damper shall meet or exceed the IECC (International Energy Conservation Code) requirements for damper leakage ratings of 3 cfm per sq. ft. @ 1 in. wg or 8 cfm per sq. ft @ 4 in. wg or less when integral to the building envelope.

2.	Differential Pressure: 
•	Dampers shall have a maximum differential pressure rating of 8 in. wg.

3.	Velocity: 
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•	Dampers shall have a maximum velocity rating of 4000 fpm (20.32 m/s).

C.	Construction:

1.	Frame: 
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Specifier Note: The following requirements for frame construction provide for specific corner reinforcement.  A major problem with dampers is light or flimsy construction resulting in damper operating problems because they are installed out of square or racked.  Corner reinforcement required by the following specification will significantly minimize these problems.  
To prevent excessive pressure loss across small dampers it is desirable to require a low profile frame to maximize the damper free area and minimize pressure loss. Specifier select one of the following:
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•	Damper frame shall be aluminum formed into a 5 in. x 1 in. structural hat channel. Top and bottom frame members on dampers less than 17 in. high shall be low profile design to maximize the free area of these smaller dampers.  Frame shall be 4-piece construction with 1½ in. (minimum) integral overlapping gusset reinforcements in each corner to assure square corners and provide maximum resistance to racking. (ICD-44)

•	Quick connect damper frame shall be aluminum formed into a 4 in. x 1 in. structural hat channel with a 0.125 in. minimum wall thickness. (ICD-45)

a.	Thermally broken with dual polyurethane resin gaps.

b.	Quick connect mounting is a flangeless frame ordered oversized to mate with a connecting duct.

•	Optional frame types:

a.	Quick connect damper frame shall be aluminum formed into a 4 in. x 1 in. structural hat channel with a 0.125 in. minimum wall thickness. (ICD-44)

b.	Single side flange applies a 1½ in. flange to the actuator side of the damper frame. (ICD-44 or ICD-45)

c.	Reversed side flange applies a 1½ in. flange to the side opposite the actuator. (ICD-44 or ICD-45)

d.	Channel frame is an aluminum formed 5 in. x 1¼ in. structural hat
channel. (ICD-45)

2.	Blades:
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Specifier Notes: The following requirements for blade construction incorporate a design concept known as VSB (Variable Symmetrical Blades). Many damper manufacturers utilize only one size of blade, which requires trimming one or more blades to accommodate varying damper heights.  When blades are trimmed one or more of the blades become non-symmetrical resulting in operating torque that will vary significantly depending on airflow direction through the damper.  Alternatively, larger blade stops (top and bottom of damper) are required. This reduces damper free area and results in higher pressure loss across the damper. 
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•	Damper blades shall be heavy gauge extruded aluminum airfoil shape with metal blade to blade overlap.  Each blade shall be symmetrical relative to its axle pivot point, presenting identical performance characteristics with air flowing in either direction through the damper.  Blade orientation is horizontal, and operation is parallel or opposed. Polyurethane foam fills the airfoil blade cavity giving the blade its thermal transfer properties. Ends of blade have a thermal break to isolate the transfer of heat/cold through the aluminum material from one side of the blade to the other.

3.	Blade Stops:
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Specifier Notes: The following requirement for blade stop construction minimizes blade stop height.  Large blade stops reduce damper free area and results in higher pressure loss across the damper. 
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Each blade stop (at top and bottom of damper frame) shall occupy no more than ½ in. of the damper opening area to allow for maximum free area and to minimize pressure loss across the damper. 

4.	Seals: 

a.	Blade Edge:  Silicone blade seals come standard which are mechanically fastened to each blade.

b.	Jamb seal: Stainless steel is standard. Silicone is optional. (ICD-44)
Silicone is standard. (ICD-45)

5.	Linkage:
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Specifier Notes:  Linkage concealed in the jamb of the damper reduces pressure drop across the damper and results in less maintenance than on-blade-linkage. 
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Concealed in frame out of the airstream, plated steel material. Stainless steel is available as an option.	

6.	Axles:  Minimum ½ in. dia. plated steel. Stainless steel axle is optional. Removable control shaft extends 6 in. beyond the damper frame.

7.	Bearings:  
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Specifier Notes:  Extruded bearing holes in frame provide more axle to bearing surface area.  As a result, bearings will last longer and add to the life of the damper. 
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Dual bearing with acetal inner sleeve, flanged outer bearing resulting in no metal-to-metal or metal-to-plastic contact.

8. 	Finish: Mill Aluminum finish is standard.
************************************************************************************Specifier Notes:  Standard finish is mill aluminum. Consult Greenheck for assistance in specifying finishes for specific applications. 
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9.   Temperature Rating: -70° F to 200° F (-57° C to 93° C).

10.	Mounting: The ICD-44 and ICD-45 is suitable for vertical and horizontal applications.

11.	Options: Low leakage, thermal isolation will be provided from the factory with requested options such as actuators, frame type, blade action, etc.

2.3	ACCESSORIES

A.	Actuators:
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Specifier Notes:  Specify electric or pneumatic actuators.  Specify external or internal mounting.  Electric actuators and components are to be factory grounded to single point junction box in accordance with Part 1 of the Canadian Electrical Code, section 12-1xxx (Rigid and Flexible Metal Conduit Rules).  External mounting is recommended for ease of accessing for inspection and to minimize blockage that will result in higher pressure drop across the damper.  Specifier selects the required actuator type and mounting location:
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1.	Type: 
•	Manual quadrant
•	Electric, 120V AC, 2-position
•	Electric, 24V AC, 2-position
•	Electric, 230V AC, 2-position
2.	Mounting: 
•	External
•	Internal

B.	Flange Frame:
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Specifier Notes:  Flanged frame is available as single, reverse, or quick connect.
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1½ inches, extruded as part of frame.

2.4	SOURCE QUALITY CONTROL

A.	Factory Tests: Factory cycle damper and actuator assemblies to assure proper operation.

PART 3   EXECUTION

3.1	EXAMINATION

A.	Examine areas to receive dampers.  Notify the Engineer of conditions that would adversely affect installation or subsequent utilization of dampers.  Do not proceed with installation until unsatisfactory conditions are corrected.

3.2	INSTALLATION

A.	Install dampers in accordance with manufacturer’s Installation Instructions.

B.	Dampers must be accessible to allow inspection, adjustment, and replacement of components.  The sheet metal contractor shall furnish any access doors or removable section of duct in ductwork or plenums required to provide this access.  The general contractor shall furnish any access doors required in walls, ceilings, or other general building construction.  

C.	Install dampers square and free from racking. 

D.	The installing contractor shall provide and install bracing for multiple section assemblies to support assembly weight and to hold against system pressure. 

E.	Do not compress or stretch the damper frame into the duct or opening.

F.	Attach multiple damper section assemblies together in accordance with manufacturer’s instructions.  Install support mullions as reinforcement between assemblies as required.

G.	Handle dampers using the frame or sleeve.  Do not lift or move dampers using blades, actuator or jackshaft.

H.	Install connections to [electric, pneumatic] actuators as specified in section 230913.

END OF SECTION