FD-1300 1-1/2 Hour Dynamic Rated Multi-Blade Fire Damper Installation Bulletin
3
M
ounting Angles
Mounting angles are mandated by building codes for
restricting the passage of flame through any gaps
created by the passage of the sleeve through the fire
barrier. Conventional mounting angles shall have
minimum dimensions of 1.5 inches x 1.5 inches x
16 gauge (38 cm x 38 cm x 1.5 cm).
Mounting
Angles
Top
3 in. maximum
Side
Sleeve
Damper
Fire Barrier
6 in.
maximum
maximum
6 in.
3 in.
maximum
Figure 5: Installing and Fastening Mounting Angles
•
The mounting angles shall be fastened to the
sleeve with No. 10 bolts or sheet metal screws or
0.5 inch (1.3 cm) long welds.
•
Width or height dimensions of 10 to 13 inches
require a minimum of two screws equally spaced
on each side, top, and bottom of the sleeve.
•
Width or height dimensions 14 inches and larger
will be secured by screws spaced at 6 inch
centers, starting within three inches from the
corners.
•
The mounting angles shall be installed to provide
flush fits (Figure 5 shows one corner), allowing no
gaps to exist at any corner.
!
DANGER: To avoid causing death or
serious bodily harm to building
occupants, allow for expansion of
duct. Do not fasten or weld the
angles together at the corners of
the sleeve. Do not secure the
mounting angles to the fire
barrier.
Figure 6: Wall/Mounting Angle Overlap
•
After installation, the mounting angles shall cover
the space between the damper sleeve and the
wall, and overlap the wall by a minimum of
one inch. Refer to Figure 6.
S
tud Framing
Gypsum panels must be screwed on maximum 12 inch
centers to all stud and runner flanges surrounding the
opening as shown in Figures 7 through 9.
Figure 7: Metal Stud Side View
Figure 8: Wood Stud Side View
Figure 9: Wall Opening
Содержание FD-1300
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