Installation; Clearances Required Between Fire Damper Sleeves And Wall/Floor Openings; Sleeve Length And Wall Thickness; Round Duct Connections - Greenheck FSDR Series Installation, Operation And Maintenance Manual

Installation -

Failure to follow these instructions will void all warranties.
These instructions apply to 11/2 hour rated combination fire smoke and fire dampers mounted (blades must be horizontal)
in: 1) masonry, block or stud walls and 2) concrete floors or ceilings. Specific requirements in these instructions are
mandatory. Dampers must be installed in accordance with these instructions to meet the requirements of UL 555 and
UL 555S. The installation of the damper and all duct connections to the damper sleeve shall conform to the latest
editions of NFPA 90A, Standard for the Installation of Air Conditioning and Ventilating Systems, and the SMACNA
Fire, Smoke and Radiation Damper Installation Guide, and UL Classifications R13317.

1. CLEARANCES REQUIRED BEtWEEN FIRE DAMPER SLEEVES AND WALL/FLOOR OPENINGS

Fire damper assemblies expand during periods of intense heat. Therefore, it is essential that openings in walls
or floors be larger than the fire damper assembly to allow for this expansion. The wall/floor opening must be
a minimum of 7/8 in. (22mm) larger than the outside diameter of the damper. Refer to Section 4 for additional
installation considerations.
Fig. 1
2. SLEEVE LENGtH AND WALL/FLOOR tHICKNESS
Insert the damper assembly into the prepared opening, to
appropriate depth (see Fig. 1).
Recommended maximum and minimum insertion depth
can be exceeded if:
1) the operation of the damper actuator is not
impeded and
2) the C L of the damper blade remains within the
plane of the wall/floor
IMPORtANt SAFEty DANGER! : To avoid
causing death or serious bodily harm to
building occupants, do not insert screws
into the damper frame unless used for duct
connection within 2 in. (51mm) of the frame
end.
The sleeve may extend a maximum of 16 in. (406mm)
beyond the wall or floor on the actuator side of the
damper and a maximum of 6 in. (152mm) on the opposite
side.

3. ROUND DUCt CONNECtIONS

Round duct connections to shall be attached with #8
or #10 sheet metal screws as follows:
• Ducts 22 in. (558mm) dia. and smaller shall have
three screws.
• Ducts larger than 22 in. (558mm) dia. up to and
including 24 in. (610mm) dia. shall have five
screws.
NOtE: All breakaway connections described may
have duct sealant, PA2084T duct sealant adhesive
manufactured by Precision, DP1010 water base duct
sealant manufactured by Design Polymetrics, Grey
Pookie or Ductmate PROseal ® applied in accordance
with SMACNA recommendations
3