Ceiling Exhaust Fan Support
The following two mounting methods may be used.
1. Suspend fan/damper assembly using #10-32
threaded steel rod as shown in
Figure 4
. Suspend
from joists or cold rolled channels (do not suspend
from beams). If vibration isolators are used, fender
washers must have a larger outside diameter than
the holes in the fan mounting angle.
2. Support fan/damper assembly using (2) minimum
16 ga. x 1
1
⁄
2
in. steel channels with
9
⁄
16
in. flanges.
Suspend from joists or cold rolled channels (do not
suspend from beams). Alternatively, bolt channels
ends directly to joists or other cold rolled channels
using minimum #10 bolts. See
Figure 5
.
Do NOT support fan/damper assembly by ceiling
tile or ceiling grid (Tee) members when using with a
suspended ceiling!
UL/cUL Installation - 3 Hour Non Combustible Floor/Ceiling Assemblies
SP Fan
#10-32 Threaded
Steel Rod
Hanging Vibration
Isolation
Ceiling Radiation
Damper
Fire Rated Ceiling
3 in .
Grille
Hole Opening Is
“A” x “B”
#10 x ¾ in. SMS
6 in. Max. Centers,
2 Min./Side
Beam
Steel
Joists
Steel Hanger Wires
(12 SWG minimum)
Concrete Floor
Figure 3
“D”
“E”
Figure 4
Figure 5
#10 Bolt or #10-32
Threaded Steel Rod
Supports To Joists Or
Other Cold Formed
Channels (By Others)
1 1/2 in. x 9/16 in. x 16 Gauge
(Minimum) Cold Formed Steel
#10 x 3/8 in. SMS,
(Minimum) 4 Per Side
CRD-XXX
Series Damper
#10 Bolt or Sheet Metal Screw
(Minimum) Attached Through
Prepunched Holes In Mounting
Angles Into Channel Brace
Supports, 2 Per Side (By Others)
Grille Installation
Mount grille to underside of ceiling radiation damper
using 2 - #10 x
1
⁄
2
in. Phillips head stainless steel sheet
metal screws provided with SP fan.
CRD Series for SP Fans
7
®
