Greenheck FD 150 Series Installation Instructions page 2

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
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
• / " bolts and nuts
4
3
• / " steel pop rivets
16
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
(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 1
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.
1 1
⁄ " x 1 ⁄ "
2 2
Figure 2: Retaining angle installation.
5
⁄ " x 1 " legs
8
1 ⁄ " x 1 1 ⁄ "
2 2
Figure 3: Retaining angle installation when fire
FD-150X (H or V)
DFD-150X
Table 1: Maximum sizes for multi-section dampers.
2
Retaining
Angle
Damper
* only applicable for damper sizes above 36" x 36"
5
/ " x 1" 16 ga. angles
8
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'.
damper is used in conjunction with a grille.
( 5 ⁄ " x 1" angles can be used on fire dampers
8
only up through 36" x 36".)
Maximum Sizes
Damper
for Multi-Section
Model
Dampers
Wall or
Floor
Min. 1"
Overlap*
Retaining
Angle
Sleeve
Duct
A
B
1 1
1 / " x 1 / "
2 2
16 ga. angles
Grille (supplied
by others)
Max Overall Size
for Multi-Section
Dampers
96 x 48 or
48 x 48
120 x 40
96 x 48 or
36 x 36
120 x 40