P.O. Box 410
Schofield, WI  54476

Phone:  715.359.6171
www.greenheck.com
Product Specification Guide
Model CRD-501 Series Round Leakage Rated 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.	True Round Leakage Rated Ceiling Radiation Dampers meeting requirements of UL Standard 555C 4th Edition and 555S 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 Section 15810 – Ducts)

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.	CSFM – California State Fire Marshall Listing for Smoke Damper (leakage)
D.	IBC – International Building Code
E.	NFPA 92 – Smoke Control Systems
F.	NFPA 105 – Standard for the Installation of Smoke Door Assemblies
G.	UL 555S (Fourth Edition) – Standard for safety: Leakage Rated Dampers for use in smoke control systems
H.	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 leakage, velocity, differential pressure and elevated temperature.
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 smoke dampers in accordance with:
1.	NFPA 92 and 105
2.	CSFM Leakage (Smoke) Damper Listing
3.	Applicable Building Codes

B.	Dampers shall be tested, rated, and labeled in accordance with 
1.	UL 555S (Fourth Edition), Listing R13317
2.	UL 555C (Fourth Edition), Listing R13446

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	ROUND LEAKAGE RATED CEILING RADIATION DAMPERS

A.	Model: CRD-501 series true round leakage rated ceiling radiation dampers.
1.	Leakage: 
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Specifier Notes: Leakage Class ratings of I, II, & III are allowed by UL Standard 555S.  Most codes require a minimum of Leakage Class II.  The lowest leakage rating (Leakage Class I) is recommended as it provides a higher level of safety at little if any increase in cost. ************************************************************************************
•	Dampers shall have a UL555S leakage rating of Leakage Class I.

2.	Elevated Operational Temperature:
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Specifier Notes: Elevated temperature ratings of 250F and 350F are allowed by UL Standard 555S.  The highest temperature rating (350F) is recommended as it provides a higher level of safety at little if any increase in cost. ************************************************************************************
•	Dampers shall have a UL 555S elevated temperature rating of 250F.
•	Dampers shall have a UL 555S elevated temperature rating of 350°F.

3.	Differential Pressure: 
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Specifier Notes: Pressure rating levels of 4 in. wg are allowed by UL Standard 555S.  It is recommended that the lowest level consistent with the project’s HVAC system design be specified. ************************************************************************************
•	Dampers shall have a minimum UL 555S differential pressure rating of 4 in. wg.

4.	Velocity: 
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Specifier Notes:  Airflow velocity rating levels of 2000, 3000, and 4000 fpm are allowed by UL Standard 555S. It is recommended that the lowest level consistent with the project’s HVAC system design be specified. ************************************************************************************
•	Dampers shall have a minimum UL 555S velocity rating of 3000 fpm.

5. 	Fire Closure Temperature: 
Each combination fire smoke 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

B.	Construction:
1.	Frame and Sleeve: 
•	The damper frame and sleeve shall be of one piece design, made with 20 ga. galvanized steel and a groove for added strength.
2.	Blades: 
•	Double skin, minimum 14 ga. equivalent thickness, galvanized steel.

3.	Blade Seals:
•	Silicone rubber fully encompassing the blade edge and mechanically secured between the double skin blades.

4.	Closure Device
•	Damper shall be supplied with RRL (resettable link).

5.	Actuator:
•	24 volt
•	120 volt
•	240 volt

6.	Axles: 
•	Minimum ½ in. dia. plated steel.

7.	Bearings: 
•	Axle bearings shall be bronze sleeve type.
•	Axle bearings shall be 304 stainless steel sleeve type.

8.	Mounting:
•	Horizontal

9.	Finish:
•	Galvanized steel

2.3	SOURCE QUALITY CONTROL

A.	Factory Tests: Factory cycle damper 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, labeling, and NFPA 90A at locations indicated on the drawings.  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 round 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.

F.	Install connections to electric actuators as specified in section 230913.

END OF SECTION