IM 1068-2 / Page 6 of 28
Installation
Wall Box Installation
The wall thickness will determine how much, if any, of the
wall box will protrude into the room. Figure 3 shows a typical
installation in a frame and brick wall. These instructions will
vary by depth of wall, but not by wall material. Do not re-
move the weather panel at any time during the installation of
the wall box. Premature removal of this panel could result in
improper leveling or sealing. Install the wall box as follows:
1. If the wall opening has not been made, cut and break
through using care to leave interior and exterior surfaces
undamaged. See
"Wall Opening Requirements" on page
5
for proper size.
2. Install lintels as shown on the plans and specifications.
3. If the wall opening has already been made, measure it to be
certain it has adequate clearance for the wall box. Be sure to
allow extra clearance for insulation around the wall box to
reduce sound and heat transfer. Continue with step #4.
4. Apply a layer of mortar or roofing cement to the bottom
surface of the opening (see Figure 3).
Table 2: Wall Box and Room Cabinet Dimensions
Dimension
“
A
”
Dimension
“
C
”
– Cabinet Depth
007-014
in.
mm
in.
mm
0 to -1
0 to -25
8
1
⁄
4
210
0 to +1
0 to +25
9
1
⁄
4
235
1 to 2
25 to 51
10
1
⁄
4
260
2 to 3
51 to 76
11
1
⁄
4
286
3 to 4
76 to 102
12
1
⁄
4
311
4 to 5
102 to 127
13
1
⁄
4
327
5 to 6
127 to 152
14
1
⁄
4
362
6 to 7
152 to 178
15
1
⁄
4
387
7 to 8
178 to 203
16
1
⁄
4
413
8 to 9
203 to 229
17
1
⁄
4
438
Dimension “B”
will vary by the thickness of the wall, the louver,
the amount the louver is recessed into the wall (if any) and the
amount the wall box extends into the room. The minimum “B”
dimension is 2
1
⁄
2
'' (64mm). The wall box can be factory furnished
in increments between 2
1
⁄
2
'' (64mm) and 10'' (254mm). Wall box
extensions in 1'' (25mm) increments can also be provided to at-
tach to the rear of the wall box.
NOTICE
5. Place 2'' (51mm) fiberglass batt or 1" (25mm) Styrofoam
insulation around the top and sides of the wall box.
6. Locate the wall box in the wall opening with the weather
panel to the outside. Use the top edge of the wall box
for horizontal leveling. The wall box must also be
verticallyplumb. Shim the wall box to accomplish this.
Recess so louver is flush with outside wall.
7. Drill four (4) holes in the sides of the wall box and attach
it to the walls securely using appropriate fasteners.
Note: Never drill through bottom of wall box.
8. If face brick is being installed, continue coursing up the
wall until the wall box is completely surrounded and
becomes an integral part of the wall.
9. Caulk interior and exterior perimeter weather tight where
the box meets the wall. Use a non hardening, waterproof
caulk such as silicone.
Note: For rooms with thick carpet, wall box should be
installed 1/2'' (13mm) above concrete floor to facilitate
future chassis installation and removal.
Figure 3: Wall Box End View (Drawing Not To Scale)
Table 3: Wall Box Dimensions
Dimensions - inches
Wall Box “B”
Dimension
007–014
2
1
⁄
2
3
1
⁄
2
4
5
6
7
8
9
10
Overall Length
10
1
⁄
2
11
1
⁄
2
12
13
14
15
16
17
18
Dimensions - mm
Wall Box “B”
Dimension
007–014
64
89
102
127
152
178
203
229
254
Overall Length
267
292
305
330
356
381
406
432
457
Summary of Contents for IM 1068-2
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