Greenheck Multi-Blade DFD Series Manual

®
Refer to:
'Installation Instructions for FSD-XXX, DFD-XXX, &
SSFSD-XXX, Series Fire & Combination Fire Smoke
Dampers' (Part #481318)
or
'Installation Instructions for FD, DFD, SSFD, SSDFD, &
KFD Series Curtain Fire Dampers' (Part #481324)
for additional details
1. GAUGES AND LENGTHS OF FIRE DAMPER SLEEVES
All fire smoke 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 (3.5 mm). Sleeve inside dimensions must equal
damper outside dimensions.
Sleeves shall extend a maximum of 16 in. (406 mm) beyond the wall or floor on the actuator or manual quadrant side
of the damper (see Figure 1). When an access door is incorporated as a part of the sleeve on the side opposite the
actuator or manual quadrant, the sleeve shall also extend a maximum of 16 in. (406 mm) beyond the wall or floor.
When there is no access door incorporated as part of the sleeve, the sleeve shall extend a maximum of 6 in. (152
mm) beyond the wall or floor on the side of the damper opposite the actuator or manual quadrant.
2. ATTACHING FIRE DAMPERS SLEEVES
All four sides of the damper frame must be attached to the sleeve with one row of attachments on each side of the
frame. Attachments must be spaced a maximum of 6 in. (152 mm) on centers and a maximum of 2 in. (51 mm) from
corners. A minimum of 4 attachments (2 on each side of the frame) 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
• ⁄ in. (6 mm) bolts and nuts
1
4
• ⁄ in. (4.7 mm) steel pop rivets
3
1 6
Access door required on
jackshaft side of damper.
Refer to the latest edition
of NFPA 90A.
Figure 1
®
Optional blade indicator
and/or electric link.
Airflow
Jackshaft
Actuator
'A' Dim.
(Distance from
end of sleeve to
Damper
face of damper)
Sleeve
16 in. max.
Sleeve Length (L)
Multi-Blade DFD and FSD Series
Retaining Angles
(see Section 4)
LINE OF WALL
DO NOT INSTALL SCREW S
BETWEEN THESE LINES
AROUND ENTIRE DAMPER
C L
Dampers may be mounted either
6 in. max.
vertically or horizontally. Blade axis
must always be horizontal.
T w
Document 463543
Field Supplied Sleeves
Line of Wall
DO NOT INSTALL SCREWS
BETWEEN THESE LINES
AROUND ENTIRE DAMPER
458549
Detail 1
Field Supplied Sleeves 1