Greenheck FD 150 Series User manual

These instructions apply to 11⁄2hour rated fire dampers mounted in
masonry, block or stud walls and 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 3225-
1241:101, and New York City BSA/MEA listing 260-91-M 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" 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:
- Galvanized steel fire dampers and sleeves:1⁄8" per foot of
damper width and height with a minimum clearance of 1⁄4".
Recommended clearances, for width and/or height
dimensions of:
1) 48” or less: 1⁄2"clearance
2) More than 48” and 96” or less: 1” clearance
3) More than 96”: 11⁄2" 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.
Type A
Wall or Floor
Duct Damper
Maximum
6" Maximum 6"
Retaining Angles
(See Section 3)
1/4" minimum
total clearance
(See Section 2)
Wall or Floor
Duct
Damper
Type B
Wall or Floor
Damper
Duct
Type C, CO, CR & R
On types R & CR
factory furnished
duct collar qualifies
as breakaway
connection.
INSTALLATION INSTRUCTIONS for
FD and DFD 150X Series
Extended Frame
11⁄2Hour Curtain Fire Dampers
Vertical or Horizontal Mount
Part No.453946
Example: A 12"x 12" damper would require a
minimum clearance of 1⁄4".
A 48" x 12" damper would require a
minimum clearance of 1⁄2" on width
and 1⁄4" on height.
VENCO PRODUCTS
Figure 1: Type A, Type B, and Type C, CO, CR,
R damper installation diagrams.

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 11⁄2"x1
1⁄2"
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" bolts and nuts
• 3/16" steel pop rivets
Attachments must be spaced a minimum of 6" on
centers and a maximum of 2" 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". 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.
- For grille installation on fire dampers up through
36" x 36" maximum, angle legs may be reversed
and one leg inserted into the wall/floor opening
provided the required clearance is maintained
between angle leg fasteners and the wall/floor
opening. Retaining angles used in conjunction
with grille installations must be a minimum of 16
gauge steel and have a minimum of 5⁄8" x 1" legs
(this is only applicable to fire dampers up
through 36" x 36"; fire dampers larger than 36" x
36" will still require a minimum of 11⁄2" x 11⁄2"
legs) (see Figure 3).
4. CONNECTING DUCTS TO THE FIRE DAMPER
All duct connections to FD 150X series extended
frame dampers must be “breakaway” type
connections. All connections shown on page 3 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 at right shows maximum sizes
for multiple section dampers.
2"Max.
6"Max.
6"Max.
2"Max.
Sleeve
Retaining
Angle
Damper
Duct
Min. 1"
Overlap*
Wall or
Floor
Retaining
Angle
* only applicable for damper sizes above 36" x 36"
2
Figure 3: Retaining angle installation when fire
damper is used in conjunction with a grille.
(5⁄8" x 1" angles can be used on fire dampers
only up through 36" x 36".)
Figure 2: Retaining angle installation.
Table 1: Maximum sizes for multi-section dampers.
96 x 48 or
120 x 40
96 x 48 or
120 x 40
Maximum Sizes Max Overall Size
Damper for Multi-Section for Multi-Section
Model Dampers Dampers
FD-150X (H or V) 48 x 48
DFD-150X 36 x 36
11/2" x 11/2"
16 ga. angles
5/8" x 1" 16 ga. angles
minimum either inside or
outside of sleeve.
Angle can be located on
outside surface of fire rated
partition as shown in 'A', or
mounted between the stud
and the fire rated sheet
rock as shown in 'B'.
Grille (supplied
by others)
A
B

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
Do not bolt corners
6" long 1/16" max.
thickness plastic cleats;
12" c-c (min. 1 per side)
BREAKAWAY CONNECTIONS
Duct
Sleeve
6" 6"
9"
6" 6"
9"
7" 7"
5" 5"
5" 5"
6"
Std. Clip
Length
C
L
Duct
60" Duct
4 Reqd.
48" Duct
3 Reqd.
36" Duct
3 Reqd.
24" Duct
2 Reqd.
18" Duct &
Smaller
1 Reqd.
Clip Spacing
Typical TDC/TDF joint
Traditional Breakaway Style Transverse Joints
Transverse joints illustrated in Figure 4 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" wide (or dia.) and smaller may use 3
screws.
• Ducts larger than 22" 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 5.
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 TDC or
TDF addendum to the SMACNA Duct
Construction Standards except the
corners may not be bolted. Standard
6" metal clip may be used with
spacing as shown in Figure 6.
Drive Slip Joint
Figure 4: Traditional breakaway style transverse joints.
Figure 5: Detail of manufactured flanged system
breakaway connections.
Figure 6: Detail of proprietary flanged system breakaway connections.
NOTE: All breakaway connections described may have duct sealant
applied in accordance with SMACNA recommendations.

12"
24" O.C.
Maximum
Floor Runner
2"
2"
Ceiling Runner
2 Panhead
Screws
16" o.c.
Maximum
(wood studs)
16" o.c.
Maximum
(wood studs)
24" o.c.
Maximum
(metal studs)
24" o.c.
Maximum
(metal studs)
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" 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" Min.
Damper
Sleeve
Recommended Preparation of Openings in Wood and Metal Stud Walls
- Frame wall openings as shown in Figure 7.
- Double vertical studs are not required for openings 36" x 36" or smaller.
- Gypsum wall board must be fastened 12" on center to all stud and runner flanges surrounding opening (see Figure 8).
- All construction and fasteners must meet the requirements of the appropriate wall design. (See UL Fire
Resistance Directory)
Figure 7: Preparation detail for opening in stud wall.
Figure 8: Detail of retaining angles and gypsum board application for metal and wooden stud construction.
IOM-FD/DFD-150X Series FS
Rev. 4
February 1999
“UL CLASSIFIED (see complete marking on product)”
“UL CLASSIFIED to Canadian safety standards (see
complete marking on product)”
Standard 555 (Listing #R13317)
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