Installation; Clearances Required Between Fire Damper Sleeves And Wall/Floor Openings - Greenheck CFSD-211 Installation, Operation And Maintenance Manual

Installation -

Failure to follow these instructions will void all warranties.
These instructions apply to 1
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.
note: Combination fire smoke dampers are manufactured and labelled for either vertical or horizontal installation. The
dampers must be installed in accordance with labelling.
1. CLEaranCES rEQUIrED BETWEEn FIrE DaMPEr
SLEEVES anD WaLL/FLOOr OPEnInGS
Fire damper and sleeve assemblies expand during
periods of intense heat. Therefore, it is essential that
openings in walls or floors be larger than the fire/smoke
damper and sleeve assembly to allow for this expansion.
Minimum clearances required between the outside of fire
damper sleeve assemblies and wall/floor openings are:
• G alvanized steel fire dampers and sleeves:
foot (3mm per .3 m) of damper width and
(3mm per .3 m) height with a minimum clearance of
in. (6mm), maximum of 1
Recommended clearances, for width and/or height
dimensions of:
1) 48 in. (1219mm) or less:
Fig. 1
Dampers may be mounted either vertically or horizontally. Blade axis must always be horizontal.
Example:
A 12 in. x 12 in. (305mm x 305mm) will
require a minimum clearance of 1/4
in. (6mm) width and 1/4 in. (6mm) on
height
A 36 in. x 12 in. (914mm x 305mm)
damper will required a minimum
clearance of 1/2 in. (13mm) on width
and 1/4 in. (13mm) on height.
/ and 3 hour rated combination fire smoke dampers mounted (blades must be horizontal) in:
1
2
1 ⁄ in. per
8
1 ⁄ in. per foot
8
⁄ in. (38mm).
1
2
⁄ in. (13mm) clearance
1
2
Optional blade indicator
and/or electric link.
Airflow
Access door required on
jackshaft side of damper.
Refer to the latest edition
of NFPA 90A. Jackshaft
Actuator
'A' Dim.
(Distance from
end of sleeve to
Damper
face of damper)
Sleeve
16 in. max.
Sleeve Length (L)
2) More than 48 in. (1219mm) and 96 in. (2438mm) or
less: 1 in. (25mm) clearance
3) More than 96 in. (2438mm): 1
• S tainless steel fire/smoke dampers and stainless steel
or galvanized sleeves:
damper width and height with a minimum clearance of
1/4 in. (6mm), maximum of 2 in. (51mm).
Recommended clearances, for width and/or height
dimensions of:
1) 48 in. (1219mm) or less:
⁄
1
4
These are total clearances (ignoring fastener heads) and
do not need to be equally spaced around the damper.
Refer to Section 4 and Figure 6 for additional installation
considerations.
Clearance for expansion
(1/4 in. min., 1 1/2 in. max.)
Retaining Angles
(see Section 4)
LINE OF WALL
DO NOT INSTALL SCREW S
BETWEEN THESE LINES
AROUND ENTIRE DAMPER
C L
6 in. max.
T w
2. SLEEVE LEnGTH anD WaLL THICKnESS
Insert the sleeved damper assembly into the prepared
opening, to appropriate depth (refer to label on outside
of sleeve for location of damper in wall; see Page 3,
Dimension A and Detail 1, Fig. 1).
Recommended maximum and minimum insertion depth
can be exceeded if:
1) The operation of the damper is not impeded and
2) The C L of the damper frame remains within the plane
of the wall and
3) Attachments made through the retaining angle do not
penetrate the 'No Screw' area designated on the
damper sleeve.
⁄ in. (38mm) clearance
1
2
3 ⁄ in. per foot (5mm per .3 m) of
16
3 ⁄ in. (19mm) clearance.
4
LIne of Wall
DO NOT INSTALL SCREWS
BETWEEN THESE LINES
AROUND ENTIRE DAMPER
458549
Detail 1
3