IM 422-4 / Page 6 (Rev 5/99)
A heavy-gauge, corrosion resistant wall sleeve is provided
for each unit. The wall sleeve is either shipped in a separate
carton or shipped in a multi-pack of 15.
Typical installation for masonry walls is shown in Figure 5.
The recommended installation procedure for this type of
construction is as follows:
1. Clean the opening of all debris that may interfere with
installation.
2. Be sure the unit’s center of gravity falls within the load
bearing surface of the wall. The center of gravity for the unit
is approximately 10
3
⁄
4
" (273mm) from the rear edge of the
wall sleeve. If the center of gravity is not within the load
bearing surface, then additional support such as wood,
metal or concrete must be provided in the field.
3. Place a thin pad of soft mortar on the bottom of the open-
ing. Important: Make certain the wall sleeve protrudes
into the room a minimum of 1
1
⁄
8
" (29mm) beyond the
finished wall surface to accommodate the heat section and
room cabinet. Be sure to recess the wall sleeve enough to
accommodate outside louver. This recess is
3
⁄
8
" (9.5mm)
for stamped louvers and 1
1
⁄
4
" (32mm) for architectural
louvers. The louver should be flush to exterior surface
when completed.
Wall Sleeve Installation — Thick Wall Construction
Figure 5. Wall sleeve installation using brickstops
4. If a brickstop is employed (as shown in Figure 5), slide the
wall sleeve into the wall until the brickstop contacts the
exterior bricks, as illustrated below. If a brickstop is not
used, slide the wall sleeve in the wall so that it extends into
the room a minimum of 1
1
⁄
8
" (29mm) beyond the finished
interior wall surface. This allows room to attach the heat
section and room cabinet. The wall sleeve should also be
recessed enough to accommodate the outside louver.
5. After the mortar has dried, remove the masonry support
from the wall sleeve. Note: The wall sleeve is not intended
to replace the lintel.
6. Level wall sleeve in all directions and anchor with appro-
priate fasteners (as shown in Figure 14, page 8). A
5
⁄
16
"
(8mm) hole is provided on each side, 2" (51mm) down from
the top and 2" (51mm) in from the rear of the wall sleeve.
It may necessary to drill additional holes in the wall sleeve
to firmly secure it . Caution: Do not drill holes in the base
of the wall sleeve. Use shims between the wall and the wall
sleeve to prevent wall sleeve distortion during anchoring.
7. Caulk the wall sleeve to the wall opening on both the
in-side and outside perimeter using a resilient,
nonhardening caulk such as silicone. Be careful not to
plug the weep holes.
C
Outside
Louver
Optional
Brickstop
B
1
1
⁄
4
"
(32mm)
3
7
⁄
8
" (98mm)
Min.
Finished Floor
Including Carpet
16"
(406mm)
1
5
⁄
8
" (41mm) Min.
[
–
1
⁄
2
" (13mm)]
Wall Sleeve
Outside Edge
of Sleeve
Wall
Sleeve
B
X
Optional
Brickstops
42" (1067mm)
1
1
⁄
4
"
(32mm)
16"
(406mm)
Notes:
1. For dimensions B and C, see table on page 3.
2. Dimension “X” is “as required” and is usually sent to
the factory to be welded during wall sleeve fabrication.
3. Caulk entire perimeter of wall sleeve after installation.
