Greenheck FD Installation, Operation And Maintenance Instructions page 6

6. MULTIPLE SECTION FIRE DAMPERS
When multiple sections are shipped unassembled, installer shall fasten dampers together as described in Section 3.
Table 2 shows maximum sizes for multiple section dampers. Dampers that are two or more sections tall must be factory
assembled.
Damper Model
FD-100 , FD-300, FD-310, SSFD-350
FD-150
FD-110
SSFD-150
FD-350
KFD-150
KFD-110
SSKFD-150
KFD-350
SSKFD-350
DFD-150, DFD-110
DFD-350
DFD-310
SSDFD-110, SSDFD-150. SSDFD-350
Note: All dimensions shown are in inches (W x H).
* Sizes listed is the damper size not transition size.
Table 2:
Traditional Breakaway Style Transverse Joints
Transverse joints illustrated in Figure 5 have always been
approved as breakaway connections. SMACNA testing
has also approved the following variations as breakaway
connections.
• The breakaway connections shown to the right can be
applied with maximum of (2) #10 sheet metal screws on
each side and on the bottom located in the center of the
slip pocket and penetrating both sides of the slip pocket.
• Transverse joints illustrated can
be applied as top and bottom
joints with Drive Slip - side joints
in duct heights up to 20 inches
(508mm).
6
Mounting
Vertical
Vertical or Horizontal
Vertical or Horizontal
Vertical
Horizontal
Vertical
Horizontal
Vertical or Horizontal
Vertical or Horizontal
Vertical
Vertical
Horizontal
Vertical
Vertical
Horizontal
Vertical
Horizontal
Vertical
Horizontal
Vertical
Maximum section sizes and overall sizes for multiple section dampers (W x H).
DUCT-SLEEVE CONNECTIONS
Drive Slip Joint
Maximum Single
Section Damper Sizes*
48 X 48 (1219mm x 1219mm)
48 X 48 (1219mm x 1219mm)
48 x 48 (1219mm x 1219mm)
48 X 48 (1219mm x 1219mm)
36 x 36 (914mm x 914mm)
48 x 48 (1219mm x 1219mm)
40 x 40 (1016mm x 1016mm)
36 x 16 (914mm x 406mm)
36 x 16 (914mm x 406mm)
36 x 16 (914mm x 406mm)
36 x 16 (914mm x 406mm)
36 x 16 (914mm x 406mm)
36 x 16 (914mm x 406mm)
36 x 36 (914mm x 914mm)
24 x 18 (610mm x 457mm)
30 x 30 (762mm x 762mm)
36 x 36 (914mm x 914mm)
24 x 18 (610mm x 457mm)
30 x 30 (762mm x 762mm)
36 x 36 (914mm x 914mm)
30 x 30 (762mm x 762mm)
30 x 30 (762mm x 762mm)
Plain "S" Slip Hemmed "S" Slip
Inside Slip Joint Standing "S"
Standing "S" (Alt.) Standing "S"
(Bar Reinforced)
Figure 5: Traditional breakaway style transverse
joints.
Maximum Multi-Section
Damper Sizes*
-
96 x 48 (2438mm x 1219mm) or
120 x 40 (3048mm x 1016mm)
96 x 48 (2438mm x 1219mm)
96 X 48 (2438mm x 1219mm) or
120 X 40 (3048mm x 1016mm)
-
-
80 x 40 (2032mm x 1016mm)
96 x 48 (2438mm x 1219mm) or
120 x 40 (3048mm x 1016mm)
96 x 48 (2438mm x 1219mm)
96 X 48 (2438mm x 1219mm) or
120 X 40 (3048mm x 1016mm)
-
80 x 40 (2032mm x 1016mm)
-
72 x 48 (1828mm x 1219mm) or
60 x 60 (1524mm x 1524mm) or
120 x 30 (3048mm x 762mm)
48 x 36 (1217mm x 914mm)
-
-
48 x 36 (1217mm x 914mm)
-
-
-
Double "S" Slip
Standing "S" (Alt.)
Standing "S"
(Angle Reinforced)