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Dampers Supported Directly From Structure cont....
Detail B
Figure 7
Unducted Recess Mounted Air Inlet Or Outlet Devices
ceiling radiation damper is 12 in. diameter [305mm]
(nominal), the ceiling membrane opening is larger than
13 in. [330mm]).
(610mm [.371 sq. m
])
Paragraph 5).
neck may be satisfied in three ways:
1. Ceiling radiation damper may be connected
Detail B
16 ga. x 1 1/2 in.
(1.5mm x 38mm) Steel
Channels (with 9/16 in.
(14mm) minimum flanges)
Figure 8
Detail C
6 3/4 in.
(171mm)
maximum
Detail A
.
Detail C
Thermal
Detail A
Blanket
All hanger wires
must be vertical
(not splayed)!
Ceiling
Radiation
Damper
Air
(Inlet or Outlet)
Ferrous
Device
Device
directly to the air device neck and supported
by steel channel (See Detail A, Figure 8).
2. Ceiling radiation damper may be connected
directly to the air device neck and supported by
hanger straps (See Detail B, Figure 8).
3. Ceiling radiation damper may be connected
directly to the air device neck and supported
by direct suspension with wires looped through
holes in the damper frame before tying (See
Detail C, Figure 8).
Figure 8.
All hanger wires
must be vertical
(not splayed)!
Air (Inlet or Outlet) Device
Detail D
Non - Ferrous
Device
Detail E
Non - Ferrous
Device
Ceiling
Radiation
Damper
9 3/4 in.
(248mm)
Maximum
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