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Specifications
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 NFPA 80, 90A, 92A, 92B, 101 & 105 and further shall
be tested , rated and labeled in accordance with GB 15931 standard.
Each damper /actuator combination shall have a UL555S elevated
temperature rating of 280°C minimum and shall be operational
and dynamic rated to operate at maximum design air flow at its
installed location. Each damper shall be supplied with an appropriate
actuator installed by the damper manufacturer at the time of
damper fabrication. Damper actuator shall be (specifier select one
of the following) electric type for 120 (24 or 230) volt operation or
pneumatic type for 25 psi minimum (30 psi maximum) operation.
Damper blades shall be 1.24mm galvanized steel 3V type with
three longitudinal grooves for reinforcement. Damper frame shall
be galvanized steel formed into a structural hat channel shape with
reinforced corners. Bearings shall be sintered bronze sleeve type
rotating in extruded holes in the damper frame. Blade edge seals
shall be silicone rubber designed to inflate and provide a tighter seal
against leakage as pressure on either side of the damper increases.
Jamb seals shall be stainless steel compression type. Blades shall be
completely symmetrical relative to their axle pivot point, presenting
identical resistance to airflow in either direction or pressure on either
side of the damper.
The Damper Manufacturer's submittal data shall certify all air
performance pressure drop data is licensed 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 500-D. Dampers shall be labeled
with the AMCA Air Performance Seal.
Damper must be rated for mounting vertically (with blades running
horizontal) or horizontally and be UL 555S rated for leakage and
airflow in either direction through the damper. Each damper shall be
supplied with a 280°C fusible link.
The basis of design is Greenheck Model FSDGB-211.
GREENHECK
Greenheck Kunshan Co Ltd.
17 Qunyi Minying District • Kunshan Economic &
Technical Development Zone
Kunshan, Jiangsu, China 215300
Tel: 0512-573-66666 • Fax: 0512-573-78633
www.greenheck.com
Copyright © 2005 Greenheck Fan Corporation
FSDGB-211 rev. 4 June 2005
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