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OWNER’S MANUAL -
RAH-123M, 183M
20
20
15
9
/
16
"
Electrical outlet must
be located within 5-feet
of this point.
22
13
/
16
"
Dimensions of Finished Opening
Masonry Construction
See CAUTION under General Instructions. In masonry
walls, cut or build a finished opening 15
9
/
16
-inches high by
22
13
/
16
-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).
Brick Veneer or Frame Wall Construction.
See CAUTION under General Instructions. Cut or build
rough opening large enough to allow a framed, finished
opening 15
9
/
16
-inches high and 22
13
/
16
-inches wide.
When case is properly positioned in opening, secure it to
framing material with nails or screws driven through holes in
sides of outer case (shim case and predrill holes before se-
curing).
Framing
lumber
22
13
/
16
"
15
9
/
16
"
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.
Caulk all
sides
Lintel and
flashing
(if required)
Outercase must project
a minimum ¾"
beyond inside wall
or molding to attach front frame
nstall case
3
/
8
"
Front of outer case
to side air louvers
Optional
molding
(not provided)
5
1
/
2
"
Installed Case
(brick veneer or frame wall construction
shown)