FD-1600 1-1/2 Hour Dynamic Rated Multi-Blade Fire Dampers Installation Instructions
2
2.
Fasteners and Multiple Section Assembly
When joining multiple damper assemblies or
fastening the damper to the sleeve, dampers shall
be fastened with 1/4-20 (M6) bolts, number 10
(M5) screws, or 1/2 in. (13 mm) long welds
staggered intermittently on both sides. Space
fasteners 6 in. (152 mm) on center and a maximum
2 in. (51 mm) from the ends of the joining sections
or from each corner.
3.
Damper Sleeve
Sleeve thickness must be equal to or thicker than
the duct connected to it. Sleeve gage requirements
are listed in the SMACNA Fire, Smoke and
Radiation Damper Installation Guide for HVAC
Systems and in NFPA90A. If a breakaway style
duct/sleeve connection is not used, the sleeve
shall be a minimum of 16 gage (1.6 mm) for
dampers up to 36 in. (914 mm) wide by 24 in.
(610 mm) high and 14 gage (1.9 mm) for dampers
exceeding 36 in. (914 mm) wide by 24 in. (610 mm)
high. Damper sleeve shall not extend more than
6 in. (152 mm) beyond the fire wall or partition
unless damper is equipped with an actuator and/or
factory installed access door. Sleeve may extend
up to 16 in. (406 mm) beyond the fire wall or
partition on sides equipped with actuator and/or
factory installed access door. Sleeve shall
terminate at both sides of wall within dimensions
shown.
4.
Damper Orientation
Damper is designed to operate with blades running
horizontally and must be installed with leading
edge of closed blades within the wall or floor when
they are in the closed position. Use
Mount With
Arrow Up
label as a guide for proper damper
orientation. Horizontal mount dampers may be
installed with the jackshaft above or below the
floor.
5.
Mounting Angles
Mounting angles shall be a minimum of 1-1/2 in. x
1-1/2 in. x 20 gage steel (38 mm x 38 mm x
1.0 mm). For openings in metal stud and wood
stud and concrete/masonry walls of sizes 90 in. x
49 in. or 49 in. x 90 in. (2,286 mm x 1,245 mm or
1,245 mm x 2,286 mm) and less, mounting angles
are only required on one side of the wall or top of
the floor and must be attached to both the sleeve
and the wall.
Mounting angles may be installed directly to the
metal stud under the wallboard on metal stud wall
installations only. Larger openings installations
require mounting angles on both sides of the
partition and must be attached only to the sleeve.
Mounting angles must overlap the partition a
minimum of 1 in. (25 mm). Do not weld or fasten
angles together at corners of dampers. Johnson
Controls® fire/smoke dampers may be installed
using optional fast-mounting (FAST) angle for one
angle installation or the standard Picture Frame
Mounting Angle (PFMA)
for two angle installations.
a.
Mounting Angle Fasteners
To sleeve #10 bolts or screws, 3/16 in. (5 mm)
steel rivets or 1/2 in. (13 mm) long welds.
Masonry Wall or Floor: #10 self-tapping concrete
screws
Wood/Steel Stud Wall: #10 screws.
b.
Mounting Angle Fastener Spacing
For one angle installations, the sleeve fasteners
shall be spaced at 6 in. (152 mm) o.c. and the wall
or floor fasteners shall be spaced at 12 in.
(305 mm) o.c. with a minimum of two fasteners on
each side, top and bottom. Screw fasteners used in
metal stud must engage the metal stud a minimum
of 1/2 in. (13 mm). Screw fasteners used in wood
stud must engage the wood stud a minimum of
3/4 in. (19 mm). Screw fasteners used in masonry
walls or floors must engage the wall or floor a
minimum of 11/2 in. (38 mm). For two angle
installations, the fasteners shall be spaced at 8 in.
(203 mm) o.c.
6.
Break-Away Duct/Sleeve Connections
Flanged connection systems manufactured by
Ductmate, Nexus or Ward are approved break-
away when installed as shown in Figure 1.
Transverse Duct Connection (TDC) and
Transverse Duct Flange (TDF) roll-formed flanged
connections using 3/8 in. (10 mm) steel bolts and
nuts, and metal cleats, as tested by SMACNA, are
approved break-away connections when installed
as shown in Figure 1.
