P.O. Box 410
Schofield, WI 54476

Phone: 715.359.6171
www.greenheck.com
Product Specification Guide
Model CRD-2WT Ceiling Radiation 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.

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 "Specifier Notes" when editing this section.

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PART 1   GENERAL

1.1	WORK INCLUDED
A.	Ceiling radiation dampers for wood truss applications meeting requirements of UL Standard 555C 4th Edition

1.2	RELATED WORK
********************************************************************************************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)

1.3	REFERENCES
********************************************************************************************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.	CSFM – California State Fire Marshall Listing for Fire Damper

B.	IBC – International Building Code

C.	NFPA 90A – Installation of Air Conditioning and Ventilating Systems

D.	NFPA 101 – Life Safety Code

E.	UL 555C (Fourth Edition) – Standard for Ceiling Dampers

1.4	SUBMITTALS
A.	Comply with requirements of Section 01330 – Submittal Procedures.

B.	Product Data: Submit manufacturer’s product data.
1.	Include UL ratings for fire resistance.
2.	Indicate materials, construction, and dimensions.
3.	Verify conformance to NFPA, CSFM, IBC, UL, and applicable building code as specified in Quality Assurance.
4.	Include a copy of UL Installation Instructions.

1.5	QUALITY ASSURANCE
A.	Dampers shall meet requirements for combination fire smoke dampers in accordance with:
1.	NFPA 90A and 101
2.	CSFM Fire Damper Listing 
3.	Applicable Building Codes

B.	Dampers shall be tested, rated, and labeled in accordance with:
1.	UL 555C (Fourth Edition), Listing R13446

C.	UL Fire Resistance Directory
1.	Ceiling Design L528, L546, L558, L562, L574, L576, L581, L583, L585, L592, M501, M503, M508, P533, P538, P545, P547, P548, P554, P580

D.   Gypsum Association Fire Resistance Manual File Number: 
1.	FC 5012 (M508), FC 5078 (L558), FC 5101 (L574, M508), FC 5119 (L592), FC 5121 (L528, L546, L574, M508), FC 5514.4 (L585), FC 5515 (L528), FC 5515.3 (M503), FC 5516 (L528), FC 5519 (L574), FC 5521 (L562), FC 5528 (L528), RC 2603 (P533), RC 2604 (P554), RC 2606 (P545), RC 2609 (P538), RC 2612 (P545, P554)

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	CEILING RADIATION DAMPERS
A.	Model: CRD-2WT ceiling radiation damper

B.	Ratings:
1.	Fire Resistance: 
************************************************************************************Specifier Notes: UL 555C apply to ceiling dampers intended for installation in hourly rated fire resistive floor-ceiling and roof-ceiling assemblies with fire resistance ratings of 1 hour or less. NFPA 90A also requires that all ceiling damper locations be shown on the project plans. ************************************************************************************
•	Dampers shall have a UL 555C fire resistance rating. 

2.	Fire Closure Temperature: 
Each ceiling radiation damper shall be equipped with a factory installed heat responsive device rated to close the damper when the temperature at the damper reaches:
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Specifier Notes: Ceiling dampers qualified under UL 555C are required to be equipped with a heat responsive device to close the damper when temperature at the damper reaches some specific maximum. Heat responsive devices rated to close ceiling dampers at 165F or 212F are available. Specifier, select one of the following options.
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•	165F
•	212F

C. Construction:
1.	Frame: 
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Specifier Note: The following requirements for frame construction to meet UL listing R13446. Specifier, select one of the frame options:
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Damper frame shall be galvanized steel in gauges required by UL listing R13446 with 1 in. plaster flange around the perimeter.
•	Frame height 35/8 inches for grille type
•	Frame height 65/8 inches for ducted type

2.	Blades:
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Specifier Notes: The following requirements for blade construction incorporate set of blades constructed of galvanized steel in gauges required by UL listing R13446. Blades are hinged in the center and held open with fusible link. Blade insulation is required on all sizes. 
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CRD-2WT series shall be galvanized steel with one set of blades.  

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 5/8 inch of the damper opening area to allow for maximum free area and to minimize pressure loss across the damper. 

4.	Fire Closure Device:
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Specifier Notes: Fusible link melts when the temperature is reached and closes the damper.
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•	Dampers shall be supplied with fusible link.

5.	Mounting
•	Horizontal

6.	Finish
•	Galvanized Steel

C.	Accessories:
1.	Volume Controller
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Specifier Notes: Volume controller is used to manually set the blades at a given angle to regulate the airflow.
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•	Volume Controller
	
2.3	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 UL Installation Instructions. Any damper installation that is not in accordance with the manufacturer’s UL Installation Instructions must be approved prior to installation. 

B.	Dampers must be accessible to allow inspection, adjustment, and replacement of components. The sheet metal contractor shall furnish any access doors 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.	Do not compress or stretch the damper frame into the duct or opening.

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

END OF SECTION