Greenheck Multi-blade Fire & Combination Fire Smoke Dampers Installation Booklet (826249) - Manual (Page 44)

Pre-Installation Guidelines
The basic intent of a proper installation is to secure the
fire or fire smoke damper in, not to, the opening in such a
manner as to prevent distortion and disruption of damper
operation. This is accomplished by allowing the fire or fire
smoke damper in rated separation openings to expand
and for the connecting duct to separate in the event of the
collapse of the hanging system. The following items will
aid in completing the damper installation in a timely and
effective manner.
1) Check the schedules for proper damper locations
within the building. Visually inspect the damper for
damage and verify that the Reusable Resettable Link
(RRL) is in place or has not activated. Never install a
fire damper without the proper UL approved RRL in
place. (RRL is standard control option. These electric
links have a button for resetting.) If damper is furnished
with fusible link, visually inspect the link to verify its not
missing or broken. Replace link as necessary.
2) Lift or handle damper using sleeve or frame. Do not lift
damper using blades or actuators.
3) Damper has label on outside of sleeve indicating a
‘No Screw’ area. Do not install screws into this area as
screws may interfere with unexposed blade linkage and
prevent damper blades from opening and/or closing.
4) Damper has label indicating position of damper
and sleeve assembly in the wall. Install accordingly
to comply with manufacturer’s appropriate UL
Classification file number.
5) Damper must be installed into duct or opening square
and free of twist or other misalignment. Damper must
not be squeezed or stretched into duct or opening. Out
of square, racked, twisted or misaligned installations
can cause excessive leakage and/or torque
requirements to exceed damper/actuator design.
6) Damper and actuator must be kept clean and
protected from dirt, dust and other foreign materials
prior to and after installation. Examples of such foreign
materials include but are not limited to:
a) Mortar dust
b) Drywall dust
c) Firesafing materials
d) Wall texture
e) Paint overspray
7) Damper should be sufficiently covered as to prevent
overspray if wall texturing or spray painting will be
performed within 5 feet of the damper. Excessive dirt
or foreign material deposits on damper can cause
excessive leakage and/or torque requirements to
exceed damper/actuator design.
8) Caulking is not necessary, nor is it allowed, between
the damper sleeve and the wall or floor opening
(annular space). However, caulking may be applied to
the retaining angles.
9) ACCESS: Suitable access (such that RRL’s and
actuators can be maintained, etc.) must be provided
for damper inspection and servicing. Where it is not
possible to achieve sufficient size access, it will be
necessary to install a removable section of duct. (Refer
to NFPA 90A).
10) The Code Authority Having Jurisdiction (AHJ) must
evaluate and provide approval of final installation
where variations to these instructions are necessary.
Table of Contents
Pre-Installation Guidelines ................................................................................................................................ 44
Installation .....................................................................................................................................................44-48
• Clearances Requirements ................................................................................................................. 44
• Duct to Sleeve Connections ...................................... ........................................................................45
• Securing the Damper/Sleeve Assembly to Wall and Floor Openings ........................ ................45-46
• Actuator Connections ..................................... ...................................................................................46
• Recommended Preparation of Openings in Wood and Metal Stud Walls ..................................46-47
• Breakaway Connections ...............................................................................................................47-48
Maintenance ...................................................................................................................................................... 48
Troubleshooting .................................................................................................................................................48
These instructions apply to 11/2 hour rated combination fire smoke dampers mounted in masonry, block or metal stud walls,
or concrete floors. Specific requirements in these instructions are mandatory. These instructions meet the requirements of
UL555. Installation shall comply with the requirements of NFPA 90A (Installation of Air Conditioning and Ventilating Systems)
and UL listing R13317.
Installation -
Failure to follow these instructions will void all warranties.
1. DAMPER IS INSTALLED OUTSIDE OF WALL PLANE
GFSD-XXX
Figure 1 shows two approved installations for
combination fire smoke dampers: 1) “Through the
grille access” and 2) installation in continuing duct.
In grille-mount applications, the damper actuator can
be accessed by removing the grille and the actuator
compartment cover plate. To provide access to the
damper actuator for continuing ductwork, refer to the
requirements of NFPA 90A.
2. CLEARANCE REQUIREMENTS
There is no minimum clearance requirement between the
wall/floor opening and the sleeve exterior (with thermal
blanket attached). However, to facilitate installation,
clearances between the wall/floor opening and the
damper sleeve are recommended. Although there is no
maximum allowable clearance, the minimum overlap
requirements between the wall/floor and the flange/
retaining angle must be met. On grille-mount installations
the flange must overlap the wall/floor by 1/4 in. (6mm).
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