UL/cUL Installation - 1 Hour Combustible Floor/Ceiling Assemblies
Grille Installation
Mount grille to underside of ceiling radiation damper
using #10 x
1
⁄
2
in. Phillips head stainless steel sheet
metal screws provided with SP fan.
Ceiling Exhaust Fan Installation
1. Fan/damper assemblies installed in combustible floor
ceiling assemblies with gypsum board ceilings require
the use of a plaster flange (
Figure 1, Item 3
). A plaster
flange kit, which comes with all of the necessary
mounting hardware, is supplied with the unit.
2. The fan/damper assembly is to be attached to the
trusses using 2 - 1 in. x 1 in. x 16 ga.
(25mm x 25mm x 1.5mm) or 2 - 1
1
⁄
4
in. x 1 in. x 20 ga.
(32mm x 25mm x 1mm) mounting angles. Attach
mounting angles to the damper with a minimum of
2 - #8 screws or 5/32 in. (4mm) diameter steel rivets.
Note: Make sure the fasteners do not interfere with the
damper operation.
3. Install the fan/damper assembly, with attached mounting
angles, between the trusses as shown in
Figure 1
and
attach mounting angles to the trusses using 4 - 11/4 in.
long steel screws per mounting angle.
4. Run a minimum of 8 - 1 in. (25mm) long #6 screws
through the gypsum board into the plaster flange as
shown in
Figure 1
.
Figure 1: CRD with SP Fan
GA File No.
UL Design No.
FC 5012
M508
FC 5514
L558
FC 5514.4
L585
FC 5519
M503
FC 5521
L562
RC 2603
P533
RC 2604
P554
RC 2606
P545
RC 2609
P538
RC 2611
P547
RC 2612
P545
GA = Gypsum Association Fire Resistance Manual
These instructions describe the installation of a
CRD-310WT in designs: L528, L546, L558, L562, L574,
L576, L581, L583, L585, L592, M501, M503, M508,
P533, P538, P545, P547, P548, and P554 as detailed in
the UL Fire Resistance Directory.
CRD Series for SP Fans
6
®
