Page 1
Figure 1: Type A, Type B, and Type C,
CO, CR, R damper installation
diagrams.
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.
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.
“UL CLASSIFIED (see complete marking on product)”
“UL CLASSIFIED to Canadian safety standards (see
complete marking on product)”
UL Standard 555 (Listing #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.
Part #453946
FD and DFD 150X Series models are intended for
installation in accordance with fire damper requirements
established by:
National Fire Protection Association
NFPA Standard 90A
BOCA National Building Codes
ICBO Uniform Building Codes
IBC International Building Codes
SBCCI Standard Building Codes
CSFM California State Fire Marshal
Fire Damper Listing (#3225-0981:102)
New York City (BSA/MEA listing #260-91-M)
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.
INSTALLATION SUPPLEMENTS
Refer to the appropriate Greenheck installation supplements
for special requirements:
• Support Mullions
• Shaftwall Supplement
• Drywall Supplement
• Grille Installation Supplement
Note: Refer to Greenheck IOM, Part #461335, for CFSD
models to be installed in corridor ceiling applications.
Installation, Operation and
Maintenance Instructions
for FD & DFD 150X
MODELS
11⁄2 Hour
Curtain Fire Dampers
Vertical or Horizontal Mount
S
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1/4 in.
minimum total
clearance
Duct
Retaining Angles
(See Section 3)
On types R & CR factory
furnished duct collar
qualifies as breakaway
connection.
Duct
Maximum
6 in.
Duct
Type A
Type B
Wall or Floor
Maximum
6 in.
Damper
Wall or Floor
Wall or Floor
Damper
Damper
Type C, CO, CR & R
Page 2
Table of Contents
Pre-Installation Guidelines
The basic intent of a proper installation is to secure the fire 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 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 fusible link is in place or has not separated. If fusible link is not present or has separated,
replace link. Never install a fire damper without the proper UL approved fusible link in place. (Fusible link is
standard control option. An electric link may have been provided.)
2. Lift or handle damper using sleeve or frame.
3. Install damper accordingly to comply with manufacturer’s appropriate UL procedure file number.
4. 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.
5. Damper 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
6. Damper should be sufficiently covered as to prevent overspray of spray-on insulating, wall texturing, or spray
painting when performed within 5 feet of the damper. Excessive dirt or foreign material deposits can cause
damper to bind and not operate properly.
7. 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.
8. ACCESS: Suitable access (such that fusible links can be changed) 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).
9. The Code Authority Having Jurisdiction (AHJ) must evaluate and provide approval of final installation where
variations to these instructions are necessary.
2
Pre-Installation Guidelines........................................................................................................... .2
Installation......................................................................................................................................3-4
Breakaway Connections................................................................................................................5
Damper Maintenance.....................................................................................................................6
Damper Troubleshooting................................................................................................................6
Installation for Steel Stud Connection Option..............................................................................6-7
Page 3
• Galvanized steel fire dampers and sleeves: 1/8 in. per linear foot of damper width and height with a minimum
clearance of 1/4 in. Recommended clearances, for width and/or height dimensions of:
1) 48 in. or less: 1/2 in. clearance
2) More than 48 in. and 96 in. or less: 1 in. clearance
3) More than 96 in.: 1
1
/2 in. clearance
These are total clearances (ignoring fastener heads) and do not need to be equally spaced around the
damper. Refer to Section 3 and Figure 2 for additional installation considerations.
3. SECURING THE FIRE DAMPER TO WALL AND
FLOOR OPENINGS
Fire damper assemblies must be installed in wall and
floor openings using retaining angles on each side of the
wall or floor as described below:
• Retaining angles must be a minimum of 16 gauge
steel and have a minimum of 1 1⁄2 in. x 1 1⁄2 in. legs.
• Retaining angles must be attached to the damper
using one or more of the following methods of
attachment:
• tack or spot welds
• #10 sheetmetal screws
• 1/4 in. bolts and nuts
• 3/16 in. steel pop rivets
Attachments must be spaced a maximum of 6 in. on
center and a maximum of 2 in. from corners. The angles
must be attached to all 4 sides of the sleeve with butt
joints at each corner. A minimum of two attachments
are required on each side, top and bottom. The angles
need not be attached to each other at the corners.
• Retaining angles must completely cover the
clearance space between the damper and the
wall/floor opening, plus overlap the wall/floor a
minimum of 1 in. This coverage includes all corners
(see Figure 2).
• Retaining angles should not be fastened to the
wall/floor material. The angles should only sandwich
the wall/floor and allow for damper expansion during
periods of intense heat.
Example: A 12 in. x 12 in. damper would require a minimum clearance of 1/4 in.
A 48 in. x 12 in. damper would require a minimum clearance of 1/2 in. on width and 1/4 in. on height.
These instructions apply to 1 1⁄2 hour rated fire dampers mounted in masonry, block or stud walls and concrete floors.
Specific requirements in these instructions are mandatory. These instructions meet the requirements of UL 555.
Installation shall comply with the requirements of NFPA 90A Standard for the Installation of Air Conditioning and
Ventilating Systems. U.L. listing R13317, California State Fire Marshal listings 3225-981:102, and New York City
BSA/MEA listing 260-91-M as they apply to these dampers.
1. NO ADDITIONAL SLEEVES ARE REQUIRED
The fire damper extended frame is an approved sleeve and can be properly installed without the need for a
supplemental field installed sleeve. Damper frame shall extend a maximum of 6 in. beyond the wall or floor
opening on each side.
2. 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. Minimum clearances required
between the outside of fire damper sleeve assemblies and wall/floor openings are:
Installation -
Failure to follow these instructions will void all warranties.
Figure 2: Retaining angle installation.
3
Retaining
Angle
*only applicable for damper sizes above 36 in. x 36 in.
2 in.
6 in.
6 in.
2 in.
M
M
Max.
M
Wall or
Min. 1 in.
Overlap*
ax.
Damper
ax.
ax.
Floor
Retaining
Angle
Sleeve
Duct
Page 4
Maximum Sizes Max Overall Size
Damper
for Single-Section for Multi-Section
Model
Dampers Dampers
96 x 48
FD-150X (H or V) 48 x 48
or
120 x 40
72 x 48
DFD-150X (V) 36 x 36 or
60 x 60
DFD-150X (H) 30 x 30
48 x 36
Recommended Preparation of
Openings in Wood and Metal Stud
Walls
• Frame wall openings as shown in Figure 3.
• Double vertical studs are not required for openings 36
in. x 36 in. or smaller.
• Gypsum wall board must be fastened 12 in. on center to
all stud and runner flanges surrounding opening (see
Figure 4).
• All construction and fasteners must meet the
requirements of the appropriate wall design. (See UL Fire
Resistance Directory)
Figure 3: Preparation detail for opening in stud wall.
Figure 4: Detail of retaining angles and gypsum board
application for metal and wooden stud construction.
Table 1: Maximum sizes for single and multi-section
dampers.
4
4. CONNECTING DUCTS TO THE FIRE DAMPER
All duct connections to FD & DFD 150X series
extended frame dampers must be “breakaway”
type connections. All connections shown on page
6 are considered breakaway. Factory furnished
duct collars on types R & CR fire dampers are also
considered breakaway (see Figure 1).
5. MULTIPLE SECTION FIRE DAMPERS
When multiple sections are shipped unassembled,
installer shall fasten dampers together as
described in Section 3. Table 1 shows maximum
sizes for multiple section damper.
Note: V=Vertical Mount & H= Horizontal Mount
12 in.
24 in. o.c.
Maximum
(metal studs)
24 in. o.c.
Maximum
(metal studs)
Ceiling Runner
24 in. o.c.
Maximum
2 in.
2 in.
16 in. o.c.
Maximum
(wood studs)
Floor Runner
2 Panhead
Screws
16 in. o.c.
Maximum
(wood studs)
Metal Stud Construction
Gypsum Wallboard
Stud or Runner
Retaining
Angle
1 in. Min.
Damper
Sleeve
In metal stud construction,
exposed steel surfaces need
not be covered with gypsum
wallboard.
Wooden Stud Construction
Gypsum Wallboard
Stud or Runner
Retaining
Angle
1 in. Min.
Damper
Sleeve
In wood stud construction,
gypsum wallboard must cover
all wood stud surfaces.
Page 5
Breakaway Connections
Traditional Breakaway Style Transverse Joints
Transverse joints illustrated in Figure 5 have always
been approved as breakaway connections. SMACNA
testing has also approved the following variations as
breakaway connections.
• Standing “S” joints can be applied with #10
sheet metal screws (through joint and duct) subject
to the following limitations: Maximum 2 screws in
each side and in bottom joint.
• Transverse joints illustrated
can be applied as top and
bottom joints with Drive Slip -
side joints in duct heights up to 20 in.
Round and Oval Duct Breakaway Connections
Round or flat oval ducts connected to factory supplied Type
R, CR, or CO damper collars may use #10 sheet metal
screws as follows:
• Ducts 22 in. wide (or dia.) and smaller may use 3
screws.
• Ducts larger than 22 in. wide (or dia.) may use 5 screws.
Proprietary Flange System Breakaway Connections
(Ductmate, Ward, Nexus)
Flanged connection systems manufactured by Ductmate,
Ward, and Nexus are approved as breakaway
connections when installed as illustrated in Figure 6.
(TDC by Lockformer, TDF by Engle)
TDC and TDF systems are approved as breakaway connections when installed as described in the SMACNA Duct
Construction Standards. Standard 6 in. metal clips may be used with spacing (see Figure 7). Three-eighth in. metal bolts and
nuts may be used to fasten together corner pieces (see Figure 8).
Figure 5: Traditional breakaway style transverse joints.
Figure 6: Detail of manufactured flanged system
breakaway connections.
Figure 7: Detail of proprietary flanged system breakaway
connections.
NOTE: All breakaway connections described may have duct sealant, PA2084T
duct sealant adhesive manufactured by Precision, applied in
accordance with SMACNA recommendations.
5
Figure 8: Detail of bolted corner.
Drive Slip Joint
Plain “S” Slip Hemmed “S” Slip Double “S” Slip
Inside Slip Joint Standing “S” Standing “S” (Alt.)
Standing “S” (Alt.) Standing “S” Standing “S”
(Bar Reinforced) (Angle Reinforced)
Fire Damper Sleeve
1
/16 in. max.
6 in. long
thickness plastic cleats;
12 in. c-c (min. 1 per side)
Flanged system angles
(Attach per
manufacturer's
instructions)
Corners may be bolted
with 3/8 in. nuts and bolts
Neoprene gasket
between all angles
Duct
Sleeve
Typical TDC/TDF joint
Duct
Clip Spacing
60 in. Duct
4 Req’d.
48 in. Duct
3 Req’d.
36 in. Duct
3 Req’d.
24 in. Duct
Std. Clip
Length
6 in.
5 in. 5 in.
2 Req’d.
18 in. Duct &
Smaller
1 Req’d.
6 in. 6 in.
Duct
Duct End
9 in.
7 in.7 in.
5 in.5 in.
C
L
Flange
Corner Piece
3
in. bolt
/8
(optional)
Page 6
Damper Maintenance
Dampers shall be maintained, cycled, and tested in intervals as stated in the latest editions of NFPA 90A, 92A,
and UL 864 unless local codes require more frequent inspections.
Dampers do not typically require maintenance as long as they are kept dry and clean. If cleaning is necessary,
use mild detergents or solvents. If lubrication is desired, do not use oil-based lubricants or any other lubricants
that attract contaminant’s such as dust.
Symptom Possible Cause Corrective Action
Frame is ‘racked’ causing blades to Adjust frame such that it is square
bind on jamb and plumb
Screws in damper linkage Locate screws and remove
Contaminant’s on damper Clean with a non-oil-based solvent
(see Damper Maintenance)
Damper does not
fully open and/or
fully close
Damper Trouble Shooting
The following is a cause and correction list for common concerns with the dampers.
Link separated
Heat Replace link
These instructions apply to 11/2 hour rated fire dampers mounted in steel stud walls. Specific requirements in these
instructions are mandatory. These instructions meet the requirements of UL 555. Installation shall comply with the
requirements of NFPA 90A Standard for the Installation of Air Conditioning and Ventilating Systems. U.L. listings
R13317 and R13743, California State Fire Marshal listings 3225-981:102 and 3225-1241:101, and New York City
BSA/MEA listing 260-91-M as they apply to these dampers.
1. NO ADDITIONAL SLEEVES OR ANGLES ARE REQUIRED
The fire damper extended frame is an approved sleeve and the Steel Stud Connection (SSC) Option allows
fastening of the fire damper sleeve directly to the wall's steel stud framing. Damper frame shall extend a
maximum of 6 in. beyond the wall opening on either side. Maximum size fire damper that may be installed
using this SSC option is 36 in. W x 36 in. H.
2. INSTALLATION
Fire damper with SSC option must be in place before the wall is constructed or it can be installed as the wall
is being constructed. Wall opening is framed around the fire damper before sheet rock or other wall board
material is applied to the steel studs. This installation provides appropriate protection for duct penetrations
in fire resistant wall construction using steel studs with a fire resistance rating less than 3 hours. The
following wall design numbers (as detailed in the UL Fire Resistance Directory) are appropriate for fire
damper installations using this SSC option:
1 Hour Design: U405, U406, U422, U434, U448, U451, U456, U457, U465, U468, U469,
U485, U494
1
1
⁄2 Hour Design: U449, U452, U470, U471
2 Hour Design: U403, U411, U412, U421, U425, U428, U429, U443, U453, U474, U475,
U477, U484, U491, U495
Installation for Steel Stud Connection (SSC) Option
6
Page 7
3. FRAMING OF WALL OPENING
Form a wall opening 1/8 in. to 1/4 in. larger than
the OD of the fire damper's extended frame
(sleeve) using the same metal studs and
techniques required by the wall design per the UL
Fire Resistance Directory. Open side of the steel
stud channels shall face the fire damper and
encompass the damper's retaining bar.
4. APPLY WALLBOARD AFTER DAMPER
INSTALLATION
After damper is installed, wallboard shall be
applied to steel stud framework in the manner
required by the wall design per the UL Fire
Resistance Directory listing. Around the damper
perimeter use a minimum of 2 connections per
side, spaced 12 in. (max.) and located a maximum
of 2 in. from each corner. No additional retaining
angles are required to complete the installation.
5. CONNECTING DUCTS TO THE FIRE DAMPER
All duct connections to FD & DFD 150X series
extended frame dampers must be “breakaway”
type connections. All connections shown on page
6 are considered breakaway. Factory furnished
duct collars on types R, CR, & CO fire dampers are
also considered breakaway.
Item Description
1 FD150X Fire Damper with SSC Option
2
Steel Stud Wall (See UL Fire Resistance
Directory for specific details)
3 Steel Stud Frame around opening in wall
4 Duct Connection (See Section 6)
5
Wallboard (See UL Fire Resistance Directory
for specific details)
6
Fasteners (See UL Fire Resistance Directory
and Section 5)
IOM-FD/DFD-150X Series
Rev. 9 April 2004
Copyright © 2004 Greenheck Fan Corp.
GREENHECK
P.O. BOX 410 SCHOFIELD, WISCONSIN 54476-0410
PH. 715-359-6171
www.greenheck.com
Due to continuing research, Greenheck reserves the right to change specifications without notice.
3
2
3
3
6
3
Retaining
Bar
5
1
4
Top Cross-Section View Side Cross-Section View of
Damper in Wall
1
4
2
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