8
Aerovent Installation and Maintenance Manual IM-172
Wall Collar, Wall Box Housings
The wall collar and wall box are intended to give the panel fan an easy way to adapt other accessories for a
completed unit. They are set up to accept a panel fan, damper and weatherhood or a damper guard screen. All
holes are predrilled for the fan and accessories to help make the installation easy.
Wall Collar Installation
1. If the collar is ordered as a field assembly, assemble it first by following the directions provided with the kit.
2. When roughing in the frame make the inside dimension
1
⁄
2
" to
3
⁄
4
" larger than the outside dimension of the collar.
This will give the collar enough clearance so that it will install easily.
3. Predrill holes into the collar wherever it is decided that it can be fastened to the roughed-in frame. The wall collar
can be fastened to a roughed-in frame with lag screws through holes that need to be drilled into the collar. It is
recommended that two lag screws per collar side be used to fasten it to the frame and that the bent edge of
the collar is flush with the outside wall.
4. If power is coming into the unit from within the wall a
3
⁄
4
" to 1" hole may also have to be drilled for the power
wire to enter the collar. Be sure the metal edges of the hole are protected so the wire will not get cut.
5. If a damper, weatherhood or damper guard screen are being used, they can be fastened to the collar before the
collar is fastened to the frame.
6. Make sure the edges around the collar and frame are sealed after it is installed.
The
wall box
is installed in the same way.
SIZE
COLLAR/WALL
BOX SQ.
WALL
OPENING
BSBP
BSDDP
BSBP
BSDDP
14
--
17.25
--
18.00
16
--
20.25
--
21.00
18
--
22.25
--
23.00
21
25.25
25.25
26.00
26.00
24
28.25
28.25
29.00
29.00
30
36.25
36.25
37.00
37.00
36
42.25
42.25
43.00
43.00
42
48.25
48.25
49.00
49.00
48
54.25
54.25
55.00
55.00
54
60.25
--
61.00
--
60
66.25
--
67.00
--
Weatherhood and Damper Guard Screen
The weatherhood and damper guard screen are both items designed to help protect the damper from damage and
keep birds and other things from entering the building. The weatherhood will help deflect the outside elements from
entering into the building through the fan. It also helps protect the damper from being inappropriately operated by
the wind.
Weatherhood/Damper Guard Screen Installation
1. If mounting the damper guard screen or weatherhood onto a wall collar place it over the damper and use the
self-tapping screws provided with the collar to fasten it through the predrilled holes in the collar’s bent edge.
2. Make sure any undesired gaps are sealed to keep the elements from leaking into the building.
