Retaining plate
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| CLEARANCE FOR |
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| EXPANSION |
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DUCT |
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| OPTIONAL BLADE POSITION | |
CONNECTION |
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| INDICATOR AND/OR ELECTRIC | |
AREA |
| Do not place retainer | LINK. |
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| plate in this groove |
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1.5 IN. |
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| 1.50 IN. |
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| FUSIBLE LINK |
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| (standard) |
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| LOCATION |
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AIRFLOW |
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| DUCT |
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| CONNECTION |
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| 1.5 IN. | AREA |
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Optional |
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Second |
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Retaining |
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Plate |
| ACTUATOR |
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| 3.375 IN. |
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5.375 in. | 3.06 in. or 7.43 in.* |
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6 IN. MAX |
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Wall 
16.00 IN MAX
| SLEEVE LENGTH |
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| * 7.43 in. when OCI, RRL, RRL/OCI, | |
TOP VIEW OF DAMPER | ||
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| TOR, or PRV is selected |
Specificatons
True Round Combination Fire Smoke Dampers meeting the following specifications shall be furnished and installed where shown on plans and/or as described in schedules. Dampers shall meet the requirements of the latest edition of NFPA 80, 90A, 92A, 92B, 101, & 105.
Damper shall be constructed of 20 ga. (1mm) 304 stainless steel frame/sleeve; blades constructed of double skin 304 stainless steel round style blade; silicone rubber blade seal; stainless steel linkage; ½ in. stainless steel axle; stainless steel bearings. Damper is provided with one retainer plate.
Dampers shall be tested, rated and labeled in accordance with the latest edition of UL standards 555 and 555S. Dampers shall have a UL555 fire rating of 1½ hours. Each damper shall be equipped with a heat responsive device, which has been tested and approved for use with the damper assembly in accordance with UL555. The heat responsive device shall have a temperature rating of (specifier select one or the following) 165°F (74°C), 212°F (100°C), 286°F (141°C), or 350°F (177°C).
Dampers shall be UL labeled for use in dynamic systems. The damper shall have a dynamic closure airflow rating equal to or greater than the airflow at the dampers installed location and a dynamic closure pressure rating of 4 in. wg (1kPa). All UL555 and UL555S dynamic closure and leakage ratings shall be qualified for airflow and pressure in either direction through
the damper. UL ratings shall allow for mounting damper vertically or horizontally.
Dampers shall have a UL555S leakage rating of Class I and a temperature rating of 250°F (121°C) minimum. Dampers shall have a UL555S operational airflow rating equal to or greater than the airflow at its installed location and an operational pressure rating of 4 in. wg (1kPa). Damper actuators shall be factory mounted and qualified for use with the damper in accordance with UL555S. Damper actuators shall be (specifier select one of the following) electric type for 120 or 24 volt operation and pneumatic type for 25 psi minimum (30 psi maximum) operation. Manufacturer’s submittal data shall indicate actuator space requirements around the damper.
The Damper manufacturer’s submittal data shall certify all air performance pressure drop data is tested in accordance with the AMCA certified ratings program for test figures 5.2, 5.3, and 5.5. Damper air performance data shall be developed in accordance with the latest edition of AMCA Standard
Basis of design is Greenheck's model
Copyright © 2008 Greenheck Fan Corporation