Quick Start Manual
1313
Through-the-Wall Installation Instructions—Optional
The case may be installed through-the-wall 
in both existing and new construction.
Read completely, then follow step-by-step.
NOTE: Obtain all materials locally for 
mounting the air conditioner through- 
the-wall.
 IMPORTANT
Through-the-wall installation is not 
appropriate if any of the side or top louvers 
in the case will be obstructed by the wall.
All side and top louvers in the case must 
project on the outdoor side of the wall.
The room side of the case must project  
into the room far enough to maximize the 
balance of the unit.
The case must be installed level from side-
to-side and with a slight tilt from front to 
rear. Use a level; no more than a 1/2 bubble 
will be the correct case slant to the outside.
Lintel angle is required to support bricks or 
blocks above opening.
Flashing is required and should extend the 
length of the opening to ensure no inside 
cavity leakage occurs.
Remove the air conditioner from the case. 
For specific instruction, refer to the Window 
Installation Instructions.
Make certain that a wall receptacle is 
available close to the hole location or make 
arrangements to install a receptacle.
Place the case in the wall opening and  
place wood support strips between the case 
bottom and the flashing on both sides of the 
bottom rail. They should be the same height 
as the bottom rail and the same length as 
the wall opening.
1
A
B
 FINISH THE WALL OPENING
Caulk all four sides on the outdoor side of 
the case to prevent moisture from getting 
through to the interior wall. Use of flashing 
(drip rail) will further prevent water from 
dripping inside the wall and down the 
outside of the building.
Place the air conditioner into the case.  
For specific instruction, refer to the Window 
Installation Instructions.
2
 IMPORTANT (cont.)
Secure with 14 wood screws anchored at 
least an inch into the wall support structure.
NOTE: Drill pilot holes, if necessary, for 
proper installation. If the frame is oversized, 
use shims to prevent case distortion.
1
D
A
B
Lintel angle
Plaster line
Trim molding (if 
desired)
INSIDE
Bottom rail
Wood filler and 
caulking (above and 
below the flashing)
Air louvers (top 
and sides must 
project on the 
outdoor side of 
the wall)
OUTSIDE
Flashing 
(Drip rail)
Case 
bottom
Bottom 
rail
Flashing 
(Drip rail)
Wood support strips
Caulking
C










