Actuator Connections - Greenheck CFSD Series Installation Instruction Booklet

Retaining
Angle
*only applicable for damper sizes above 36 in. x 36 in.
Both vertical and horizontal damper installations are typified by these
Fig. 3
drawings.

5. ACTUATOR CONNECTIONS

Electrical and/or pneumatic connections to damper
actuators should be made in accordance with wiring and
piping diagrams developed in compliance with applicable
codes, ordinances and regulations (see Electrical
Guidelines).
6. INSTALLING MULTIPLE DAMPER SECTION
ASSEMBLIES
A damper assembly is not restricted to a maximum
number of sections, but must not exceed the section
sizes and overall sizes shown (see chart).
Two section high dampers require reinforcement using a
14 gauge (2mm), 5 in. (127mm) wide mullion as shown in
Fig. 4 below, or two individually sleeved units stacked
vertically, shown below in Fig. 5. When using two
individually sleeved units, the sleeve acts as the mullion,
therefore no mullion is required.
The damper sections must be attached together with
#10 ( / in. max. [19mm]) sheet metal screws,
3
4
diameter nuts and bolts, tack or spot welds, or
(48mm) diameter steel pop rivets. Attachments must be
spaced a maximum of 6 in. (152mm) on centers and a
maximum of 2 in. (51mm) from corners. Attachments must
be made on front face and back face (air entering and air
exiting side) of damper sections.
Note: Dampers ordered for individual installation may
not be installed together. The full assembly size must be
specified at the time the dampers are ordered.
Fig. 4
Single Sleeve Around Outside with
Support Mullion
Wall or
Floor
Min. 1 in.
Overlap*
Retaining
Angle
Sleeve
Duct
Damper
/ in. (6mm)
1
4
/
3
16
14 ga.
5 in. wide
support
mullion
Fig. 5
Two Individually Sleeved Units
with No Mullions
Damper Model
CFSD-211, 212
DFD-210
DFD-230
DFDAF-310
DFDTF-210
FSD-211, 212, 213
FSD-211M, 212M
FSD-231
FSD-311, 311M, 312,
312M
IMO-310
IMO-311
SEDFD-210,
SEFSD-211
SSFSD-211
FSD-231M
Damper Model
DFD-210
DFD-230
in.
DFDAF-310
DFDTF-210
FSD-211, 212, 213
FSD-211M, 212M
FSD-231
FSD-311, 311M,
312, 312M
IMO-311
SEDFD-210,
SSDFD-210
SEFSD-211
SSFSD-211
FSD-331; DFDAF-330
FSD-231M
NOTE:
FSD model dampers fitted with a fusible link closure
device are limited to single section sizes. Dampers with a
fusible link and spring assembly closure device may not be
used for multiple section applications
11
Horizontal Mount
Maximum Single Maximum Over-
Section Size in a all Size for
Multiple Section Multi-Section
Assembly Dampers
24 x 24
32 x 50 128 x 96
32 x 48
32 x 50 144 x 96
32 x 36
32 x 48 64 x 48 or 32 x 96
36 x 48 or 32 x 50 144 x 96
36 x 36 144 x 72
36 x 36 or 32 x 48
32 x 50 144 x 96
32 x 50
32 x 50
24 x 30
24 x 30
36 x 36
Vertical Mount
Maximum Single Maximum
Section Size in a Overall Size for
Multiple Section Multi-section
Assembly Dampers
32 x 50
32 x 50
32 x 50
32 x 36
32 x 50
36 x 48 or 32 x 50
36 x 36
36 x 36 or 32 x 48
32 x 50
32 x 50
32 x 50
24 x 30 or 22 x 36
24 x 30 or 22 x 36
30 x 48
36 x 36
.
NA
72 x 48
96 x 72
72 x 48
NA
NA
48 x 30
48 x 30
72 x 48
128 x 100
72 x 48
128 x 100
96 x 72
64 x 50
128 x 100
128 x 72
72 x 48
128 x 100
NA
NA
48 x 30
88 x 72
120 x 96
72 x 48