Maximum Assembly Tables; Sleeve Requirements - Greenheck DFD Series Installation, Operation And Maintenance Manual

Maximum Assembly Tables

When multiple sections are shipped unassembled, installer shall fasten dampers together. The table shows
maximum sizes for multiple section dampers. Dampers that are two or more sections tall must be factory
assembled. Note: All dimensions are shown in inches (W x H). * Sizes listed refer to the damper size, not transition
size.
Damper Model
FD-100, FD-300, FD-310, SSFD-350
FD-150
FD-110
SSFD-150
FD-350
KFD-150
KFD-350
DFD-150, DFD-110
DFD-350
DFD-310
SSDFD-150. SSDFD-350
FD-150X
DFD-150X

Sleeve Requirements

All fire dampers must be installed in a steel sleeve of the required gauge and length. Note that DFD-150X and
FD-150X series dampers are provided with an integral sleeve. See Table on page 9 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 6 in. (152 mm) beyond the wall or floor opening on each side. When a factory
mounted access door is incorporated as a part of the sleeve, the sleeve may extend a maximum of 16 in. (406 mm)
beyond the wall or floor opening on the access door side.
Fire dampers must be attached to sleeves as shown in Figure 6. All four sides of the damper frame must be
attached to the sleeve with one row of attachments on each side of the blade channel. Attachments must be spaced
a maximum of 6 in. (152 mm) O.C. and a maximum of 2 in. (51 mm) from corners. A minimum of 4 attachments (2
on each side of the blade channel) 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
16
®
Maximum Single
Mounting
Section Damper Sizes*
Vertical 48 X 48 (1219 mm x 1219 mm)
Vertical or Horizontal 48 X 48 (1219 mm x 1219 mm)
Vertical or Horizontal 48 x 48 (1219 mm x 1219 mm)
Vertical 48 X 48 (1219 mm x 1219 mm)
Horizontal 36 x 36 (914 mm x 914 mm)
Vertical 48 x 48 (1219 mm x 1219 mm)
Horizontal 40 x 40 (1016 mm x 1016 mm)
Vertical or Horizontal 36 x 16 (914 mm x 406 mm)
Vertical 36 x 16 (914 mm x 406 mm)
Horizontal 36 x 16 (914 mm x 406 mm)
Vertical 36 x 36 (914 mm x 914 mm)
24 x 18 (610 mm x 457 mm)
Horizontal
30 x 30 (762 mm x 762 mm)
Vertical 36 x 36 (914 mm x 914 mm)
24 x 18 (610 mm x 457 mm)
Horizontal
30 x 30 (762 mm x 762 mm)
Vertical 36 x 36 (914 mm x 914 mm)
Horizontal 30 x 30 (762 mm x 762 mm)
Vertical 30 x 30 (762 mm x 762 mm)
Vertical or Horizontal 48 x 48 (1219 mm x 1219 mm)
Vertical 36 x 36 (914 mm x 914 mm)
Horizontal 30 x 30 (762 mm x 762 mm)
Maximum Multi-Section
Damper Sizes*
-
96 x 48 (2438 mm x 1219 mm) or
74 x 74 (1880 mm x 1880 mm) or
120 x 40 (3048 mm x 1016 mm)
96 x 48 (2438 mm x 1219 mm)
96 X 48 (2438 mm x 1219 mm) or
120 X 40 (3048 mm x 1016 mm)
-
-
80 x 40 (2032 mm x 1016 mm)
96 x 48 (2438 mm x 1219 mm) or
120 x 40 (3048 mm x 1016 mm)
-
80 x 40 (2032 mm x 1016 mm)
72 x 48 (1828 mm x 1219 mm) or
60 x 60 (1524 mm x 1524 mm) or
120 x 30 (3048 mm x 762 mm)
48 x 36 (1217 mm x 914 mm)
-
-
48 x 36 (1217 mm x 914 mm)
-
-
-
-
-
-
Curtain Fire Dampers 5