13
In order to reinstall the chassis and re-
attach the air conditioner front cover, the
installed outercase must be square and
level from side to side. Use wood shims
between sides of case and finished open-
ing - especially where case is secured to
opening - to prevent warping or distorting.
Check installed case for distortion using
carpenter's square.
CAUTION
A finished opening 26 1/8-inches wide x 17-inches high is
recommended. The lower left inside corner of opening must
be within 5 feet of an appropriate electrical outlet (see Use
and Care manual for electrical requirements.)
When wall thickness exceeds 9-inches, opening must be
modified to allow air to enter side louvers on case (see spe-
cial instructions on back ). Do not install air conditioner in
walls thicker than 11 2/5-inches.
Brick Veneer or Frame Wall Construction
See CAUTION under General Instructions.
Cut or build
rough opening large enough to allow a framed, finished
opening 17-inches high and 26
1/8-inches wide. When case
is properly positioned in opening, secure it to framing mate-
rial with nails or screws driven through holes in sides of
outer case (shim case and predrill holes before securing).
Framing
lumber
26 1/8”
17”
Framed/Finished Opening
(brick veneer or frame wall construction)
Placement of Outer Case in Opening
Place outer case in opening, flush against one side of
opening. Use carpenter’s level and ensure case is level
from side to side and has a
3
/
8
-inch slope from front to back
(back of case must be
3
/
8
-inch lower than front to ensure
proper condensate drainage). If needed, use shims to level
case (from side to side) and to obtain proper back slope.
Front of case must project ¾-inch (minimum) beyond in-
side wall in order to attach air conditioner front frame. If
framing indoor side of opening with wood molding (or other
decorative material), extend outer case ¾-inch beyond
molding.
When case is properly positioned in opening, use wood
shims to fill any gaps between case and finished opening,
especially in area where case will be secured to opening.
Take care not to warp or distort case when installing
shims
. For condensate drainage, install drainage cup in
drain hole on baseplate of case.
Dimensions of Finished Opening
Masonry Construction
See CAUTION under General Instructions.
In masonry
walls, cut or build a finished opening 17-inches high by
26
1/8-inches wide. When case is properly positioned in
opening, secure it in place with mortar or concrete nails
driven through holes in sides of outer case (shim case and
predrill holes before securing with nails).
