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DUCT
CONNECTION
AREA
1.5 IN.
6 IN. MAX
Specifications
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) galvanized
steel frame/sleeve; blade constructed of double skin
galvanized steel round style blade; silicone rubber blade
seal; ½ in. plated steel axle; stainless steel bearing. 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
AIRFLOW
Optional
Second
Retaining
Plate
5.375 in.
Wall
SLEEVE LENGTH
TOP VIEW OF DAMPER
Retaining plate
CLEARANCE FOR
EXPANSION
Do not place retainer
plate in this groove
FUSIBLE LINK
(standard)
LOCATION
3.375 IN.
3.06 in. or 7.43 in.*
16.00 IN MAX
* 7.43 in. when OCI, RRL, RRL/OCI,
TOR, or PRV is selected
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 II
and a temperature rating of 250°F (121°C). 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 500-D.
Basis of design is Greenheck's model FSDR-512.
OPTIONAL BLADE POSITION
INDICATOR AND/OR ELECTRIC
LINK.
1.50 IN.
DUCT
CONNECTION
AREA
1.5 IN.
ACTUATOR
Copyright © 2008 Greenheck Fan Corporation
FSDR-512 Rev. 6 June 2008
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