Greenheck FD Series Manual

Wall or Floor
Sleeve
(See Sections 2 & 3)
Duct
Damper
See
Section
2
Retaining Angles
(See Section 4)
1/4 in. minimum
total clearance
(See Section 1)
Wall or Floor
Duct
Damper
Sleeve
Wall or Floor
Sleeve
Duct
Damper
On types R & CR
factory furnished duct
collar qualifies as
breakaway connection,
see section 5
See
Section
2
Fig. 2: Type B
Fig. 3: Type C, CO, CR, & R
Fig. 1: Type A
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.
FD, DFD, SSFD, & KFD 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
SBCCI Standard Building Codes
CSFM California State Fire Marshal
Fire Damper Listing (#3225-0981:102 & 3225-0981:107)
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.
Part #452763
Installation, Operation and
Maintenance Instructions
for FD, DFD, SSFD, SSDFD, & KFD MODELS
11⁄2and 3 Hour
Curtain Fire Dampers
Vertical and Horizontal Mount

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 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:
• Galvanized steel fire dampers and sleeves: 1 /8 in. per 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.: 11
/2 in. clearance
• Stainless steel fire dampers and stainless steel or
galvanized sleeves: 3/16 in. per foot of damper width and
height with a minimum clearance of 1
/4 in., maximum of 2
in. Recommended clearances, for width and/or height
dimensions of:
1) 48 in. or less: 3/4 in. clearance
2) More than 48 in. and 96 in. or less: 11
/2 in.
clearance
3) More than 96 in.: 2 in. clearance
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.
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.
2
2. GAUGES AND LENGTHS OF FIRE DAMPER
SLEEVES
All fire dampers must be installed in a steel sleeve of the
required gauge and length. See Table 1 for required
minimum sleeve gauges. Maximum sleeve thickness is 10
gauge. Sleeve inside dimensions must equal damper outside
dimensions.
Sleeves shall extend a maximum of 6 in. beyond the wall or
floor opening on each side (see Figure 1). When an access
door is incorporated as a part of sleeve, the sleeve may
extend a maximum of 16 in. beyond the wall or floor opening
on the access door side.
3. ATTACHING FIRE DAMPERS TO SLEEVES
Fire dampers must be attached to sleeves as shown in
Figure 5. All four sides of the damper frame must be
attached to the sleeve with one row of attachments on each
side of the blade channel. Attachments must be spaced a
maximum of 6 in. on centers and a maximum of 2 in. from
corners. A minimum of 4 attachments (2 on each side of the
blade channel ) per side ( 16 per damper ) are required. One of
the methods of attachment shown below must be used.
• tack or spot welds
• #10 sheet metal screws
•1
/4 in. bolts and nuts
•3/16 in. steel pop rivets
4. SECURING FIRE DAMPER AND SLEEVES TO WALL
AND FLOOR OPENINGS.
Fire damper and sleeve 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 with
minimum 11
/2 in. x 11 /2 in. legs. For dampers with height
greater than 48 in., retaining angles must be a minimum of
16 gauge steel with minimum 11
/2 in. x 21 /2 in. legs.
• Retaining angles must be attached to
the sleeve using the procedures and
methods described in Section 3. 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
sleeve and the wall/floor opening, plus
overlap the wall/floor a minimum of 1 in.
This coverage includes all corners (see
Figure 6).
• Retaining angles should not be
fastened to the wall/floor material. The
angles should only sandwich the wall/floor
and allow for damper/sleeve expansion
during periods of intense heat.
MINIMUM SLEEVE THICKNESS FOR FIRE DAMPERS
Type of Duct to Duct Duct Dimension Sleeve Gauge
Sleeve Connection
Rigid Round 24 in. max. diameter
Rectangular 36 in. max. width or 16 (.060 in.)
24 in. max. height
Rigid Round over 24 in. diameter
Rectangular over 36 in. width or 14 (.075 in.)
over 24 in. height
Breakaway Round or 12 in. wide and under 26 (.018 in.)
(or no duct) Rectangular 13 in. - 30 in. wide 24 (.024 in.)
31 in. - 54 in. wide 22 (.030 in.)
55 in. - 84 in. wide 20 (.036 in.)
85 in. wide and over 18 (.048 in.)
Important Note:
Sleeve thickness must not be less than the gauge of the connecting duct.
U.L. Standard 555 requires all ducts to terminate at the fire damper sleeves or the damper frames.
Table 1: Minimum sleeve thickness for fire dampers.
These instructions apply to 11
/2and 3 hour rated fire dampers mounted (blades must be horizontal) 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 3225-0981:102 & 3225-0981:107, and New York City
BSA/MEA listing 260-91-M apply to these dampers.

Maximum Max Overall Size
Damper Damper Single for Multi-Section
Model Section Sizes Dampers
FD-110 (H or V), FD-300/350(V), FD-310 (H or V) 48 x 48 -
KFD-110 (H or V) 36 x 16 96 x 48
FD-150 (H or V), SSFD-150/ 155 (V ) 48 x 48 96 x 48 or
KFD-150 36 x 16 120 x 40
SSFD-150/155(H) 36 x 36 -
FD-350(H) 40 x 40 80 x 40
KFD-350(H) 36 x 16 80 x 40
KFD-310/350(V), SSKFD-350/355 36 x 16 -
FD-150/155 (V) 48 x 48 74 x 74
FD-100 (V), SSFD-350 (V) 48 x 48 -
DFD-150 ( V) 36 x 36 48 x 36
DFD-155 ( V) 36 x 36 -
DFD-110 (V) DFD-350/355 (V) 36 x 36
DFD-110/155 (H) DFD-350/355 (H) SSDFD-X5X(V) 30 x 30 N/A
DFD-150 (H) 30 x 30 48 x 36
3
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
Neoprene gasket
between all angles
Flanged system angles
(Attach per
manufacturer's
instructions)
Duct
Corners may be bolted
with 3/8 in. nuts and bolts
6 in. long 1
/16 in. max.
thickness plastic cleats;
12 in. c-c (min. 1 per side)
BREAKAWAY CONNECTIONS
Traditional Breakaway Style Transverse Joints
Transverse joints illustrated in Figure 7 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 inches.
Round and Oval Duct Breakaway Connections
Round ducts connected to factory supplied Type R or CR
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.
Manufactured Flanged System
Breakaway Connections
Flanged connection systems manufactured by
Ductmate, Ward, and Nexus are approved as breakaway
connections when installed as illustrated in Figure 8.
Drive Slip Joint
Figure 7: Traditional breakaway style transverse joints.
Figure 8: Detail of manufactured flanged system
breakaway connections.
NOTE: All breakaway connections described may have duct sealant
applied, PA2084T duct sealant adhesive manufactured by Precision,
in accordance with SMACNA recommendations.
Table 2: Maximum section sizes and overall sizes for
multiple section dampers.
Note: V=Vertical Mount and H=Horizontal Mount.
All dimensions shown are in inches.
Attachments can be
staggered or
evenly spaced
6 in. Max
2 in. Max
Blade
Channel
Attachments
NOTE: Attachments must not
enter blade channel or they may cause interference with
blade closure. Narrow Line and Ultra Thin dampers do not
have flange for attachments and must be welded to
sleeve.
Figure 5: Field attachment of fire dampers to sleeves.
Figure 6: Retaining angle installation.
2 in. Max.
6 in. Max.
Sleeve
Retaining
Angle
Damper
Duct
Min. 1 in.
Overlap*
Wall or
Floor
Retaining
Angle
*only applicable for damper sizes above 36 in. x 36 in.
6 in. Max.
2 in. Max.
5. CONNECTING DUCTS TO FIRE DAMPER SLEEVE
Any duct connection other than breakaway is considered rigid.
The connections shown on this page are considered breakaway.
Factory furnished duct collars on type R and CR fire dampers are
also considered breakaway (See Figure 3).
6. MULTIPLE SECTION FIRE DAMPERS
When multiple sections are shipped unassembled, installer shall
fasten dampers together as described in Section 3. Table 2
shows maximum sizes for multiple section dampers. Dampers
over 48 in. tall must be factory assembled.

12 in.
24 in. o.c.
Maximum
Floor Runner
2 in.
Ceiling Runner
2 Panhead
Screws
24 in. o.c.
Maximum
(metal studs)
24 in. o.c.
Maximum
(metal studs)
16 in. o.c.
Maximum
(wood studs)
16 in. o.c.
Maximum
(wood studs)
2 in.
Metal Stud Construction
In metal stud construction,
exposed steel surfaces need
not be covered with gypsum
wallboard.
Gypsum Wallboard
Stud or Runner
Retaining
Angle
1 in. Min.
Damper
Sleeve
Wooden Stud Construction
In wood stud construction,
gypsum wallboard must cover
all wood stud surfaces.
Gypsum Wallboard
Stud or Runner
Retaining
Angle
1 in. Min.
Damper
Sleeve
Recommended Preparation of Openings in
Wood and Metal Stud Walls
• Frame wall openings as shown in Figure 10.
• Double vertical studs are not required for openings
36 in. x 36 in. or smaller.
• Double horizontal studs may be used to frame
opening.
• Gypsum wall board must be fastened 12 in. on
center to all stud and runner flanges surrounding
opening (see Figure 11).
• All construction and fasteners must meet the
requirements of the appropriate wall design. (See
UL Fire Resistance Directory)
Figure 10: Preparation detail for opening in stud wall.
Figure 11: Detail of retaining angles and gypsum board application for metal and wooden stud construction.
IOM-FD/DFD FS
Rev. 6 October 2003
Copyright © 2003 Greenheck Fan Corp.
Duct
Sleeve
6 in.
Std. Clip
Length
C
L
Duct
60 in. Duct
4 Req’d.
48 in. Duct
3 Req’d.
36 in. Duct
3 Req’d.
24 in. Duct
2 Req’d.
18 in. Duct &
Smaller
1 Req’d.
Clip Spacing
Typical TDC/TDF joint
6 in. 6 in.
9 in.
7 in.7 in.
5 in. 5 in.
5 in.5 in.
Proprietary Flange System
Breakaway Connections
(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 6in. metal clip
may be used with spacing as shown
in Figure 9. Three-eighth in. metal
bolts and nuts may be used to fasten
together corner pieces. Figure 9: Detail of proprietary flanged system breakaway connections.