Greenheck OSSFD-XXX Installation Manual
Part Number 461337
OFSD-XXX, ODFD-XXX,
OFD-XXX, and OSSFD-XXX Series
1½ Hour Combination Fire Smoke or Curtain Fire Dampers
Out of Wall or Out of Floor
Vertical or Horizontal Mount
Installation, Operation, and Maintenance Instructions
OFSD-XXX, ODFD-XXX, OFD-XXX, and OSSFDXXX series dampers are intended for installation in
accordance with combination fire smoke dampers
requirements established by:
NFPA National Fire Protection Association
NFPA Standards 80, 90A, 92A, 92B, 101, & 105
IBC International Building Codes
New York City (MEA listing # 260-91-M)
California State Fire Marshal
Listing #3225-0981:103 & 3230-0981:104
“UL Classified (see complete marking on product)”
“UL Classified to Canadian safety standards (see
complete marking on product)”
UL Standard 555 & 555S (Classification R13317)
Receiving and Handling
Upon receiving dampers, check for both obvious and
hidden damage. If damage is found, record all necessary
information on the bill of lading and file a claim with
the final carrier. Check to be sure that all parts of the
shipment, including accessories, are accounted for.
Dampers must be kept dry and clean. Indoor storage
and protection from dirt, dust and the weather is highly
recommended. Do not store at temperatures in excess
of 100°F (38°C).
Warranty
Greenheck warrants this equipment to be free from
defects in material and workmanship for a period of one
year from the purchase date. Any units or parts which
prove to be defective during the warranty period will
be repaired or replaced at our option. Greenheck shall
not be liable for damages resulting from misapplication
or misuse of its products. Greenheck will not be
responsible for any installation or removal costs.
Greenheck will not be responsible for any service work
or backcharges without prior written authorization.
Electrical Guidelines
All wiring shall be done in accordance with the National
Electrical Code ANSI/NFPA-70 latest edition, any local
codes that may apply, and wiring diagrams developed
in compliance with the job or project design and
specifications.
Safety Warning:
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, injury or
death. Read the installation, operating, and maintenance
instructions thoroughly before installing or servicing this
equipment.
Safety Caution!
Electrical input may be needed for this equipment. This
work should be performed by a qualified electrician.
Verify power before wiring actuator. Greenheck is not
responsible for any damage to, or failure of the unit
caused by incorrect field wiring. To avoid causing death
or serious bodily harm to building occupants, follow all
instructions carefully. Dampers must close completely to
preserve the integrity of the fire smoke separation.
Due to continuing research, Greenheck reserves the right to change specifications without notice.
This manual is the property of the owner, and is required for future maintenance. Please leave it with the owner when
the job is complete.
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Table of Contents
Pre-Installation Guidelines ................................................................................................................................ 2
Installation ...................................................................................................................................................... 2-6
•ClearancesRequirements ................................................................................................................. 3
•DucttoSleeveConnections ...................................... ........................................................................9
•SecuringtheDamper/SleeveAssemblytoWallandFloorOpenings ........................ .....................9
•ActuatorConnections ................................... ...................................................................................10
•RecommendedPreparationofOpeningsinWoodandMetalStudWalls .................................... 10
•BreakawayConnections ...................................... ...........................................................................10
Maintenance .................................................................................................................................................... 11
Troubleshooting ............................................................................................................................................... 11
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.
Installation - Failure to follow these instructions will void all warranties.
These instructions apply to 1½ hour rated combination fire smoke dampers and curtain fire dampers mounted in
masonry, block, wood 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.
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1. DAMPER IS INSTALLED OUTSIDE OF WALL PLANE
Factory Supplied
Thermal Blanket
7 1/2 in.
Max.
Damper
#10 2 1/2 in. long sheet metal
screws spaced 6 in. on center
and maximum of 2 in. from the
corners (minimum of 2 screws
per side) through the sleeve into
the header, sill and jamb framing
members. Screw into rear
portion of the studs so as to
avoid space conflicts with the
grille assembly.
Masonry
floor
Steel stud
Flange
Grille
(Supplied
by others)
Factory Supplied
Thermal Blanket
Factory Supplied
Thermal Blanket
7 1/2 in.
Max.
7 1/2 in.
Max.
Damper
Damper
#10 2 1/2 in. long sheet metal
screws spaced 6 in. on center
and maximum of 2 in. from the
corners (minimum of 2 screws
per side) through the sleeve into
the header, sill and jamb framing
members. Screw into rear
portion of the studs so as to
avoid space conflicts with the
grille assembly.
Masonry
floor
OFSD-XXX
Figure 1 shows two approved installations for
combination fire smoke dampers: 1) “Through the
grille access” and 2) installation in continuing duct.
To provide “through the grille” access to the damper
actuator, the damper is located toward the back of the
sleeve and the actuator is installed between the damper
and grille. Actuator and damper can be accessed and
serviced by removing the grille. To provide access to the
damper actuator for continuing ductwork, refer to the
requirements of NFPA 90A.
Wooden Stud Construction
“Duct Continues”
Horizontal or Vertical Mount
Gypsum Wallboard
Retaining Angle
(Refer to section 4)
Factory Supplied
Thermal Blanket
Stud or Runner
In wood stud construction,
gypsum wallboard must cover
all wood stud surfaces.
#10 sheet metal screws, 2
1/2 inches long, spaced
6 in. on center and
maximum of 2 in. from
corners (minimum of 2
screws per side). Screw
into rear portion of the
studs so as to avoid
space conflicts with
the grille assembly.
Note: Both installations for vertical mount.
Figure 1: Installation configurations for ‘Out of Wall’ combination fire smoke dampers.
ODFD-XXX, OFD-XXX, and OSSFD-XXX: Figure 2
shows installations that are also approved for curtain fire
dampers. For access to inspect the damper and fusible
link, refer to the requirements of NFPA 90A.
Grille
(Supplied
by others)
6 1/2 in.
Max.
Fire damper or
combination fire
smoke damper
“Duct Terminates” Wood Stud“Duct Terminates” Metal Stud
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 grill mount
installations the flange must overlap the wall/floor by
½ in. (13mm). On continuous duct installations, the
retaining angles must overlap the wall/floor by 1 in.
(25mm). Because no clearances are required between
the wall/floor opening and the sleeve, dampers may not
be installed in the plane of the wall using this installation
method.
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Figure 2
Concrete or
Masonry
Wall
Flange
7 1/2 in. (191mm)
maximum
Damper
Flange
Factory
Supplied
Thermal
Blanket
Type A- Vertical Mount, Duct Terminates
Flange Method
Steel Stud
Wood
Stud
Flange
Concrete or
Masonry Wall
7 1/2 in.
Damper
(191mm)
max.
Factory Supplied
Thermal Blanket
Retaining
Angle
Steel Stud
Alternate
Retaining
Location
Type A- Vertical Mount, Duct Terminates
Single Angle Method
Damper
Factory Supplied
Thermal Blanket
Retaining
Angle
7 1/2 in. (191mm)
Angle
max.
Wood
Stud
Flange
Masonry or
Concrete
Floor
Factory Supplied
Thermal Blanket
7 1/2 in. (191mm)
Damper
Type A - Horizontal Mount Below Floor/Wall, Duct
Terminates Flange Method
max.
Type A - Horizontal Mount Above Floor/Wall,
Duct Terminates Single Angle Method
Retaining
Angle
7 1/2 in. (191mm)
Factory Supplied
Thermal Blanket
Damper
Concrete or
Masonry
Floor
Concrete or
Masonry
Floor
max.
Type A - Horizontal Mount Below Floor/Wall, Duct
Terminates Single Angle Method
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