Operating instructions

Page 15 of 20
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 3/9 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
inside 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 hoe on base-
plate of case.
Installed Case
(brick veneer or frame wall construction shown)
Installation in Wall Thicker than 8 – ½ Inches
The side louvers in outer case provide ventilation to
air conditioner compressor and fan motor and must
not be blocked. When installing unit in a wall over 9
3/8” thick, provisions must be made in wall opening to
ensure free air flow to the side louvers. This can be
accomplished by chamfering the vertical portions of
the outside opening as shown.
Ventilation louvers on top of case must not be
obstructed. Do not attempt to install unit in walls
thicker than 11-3/4 inches.