Installation & Operation Manual (2020)
10
THROUGH-THE-WALL INSTALLATION INSTRUCTIONS - OPTIONAL
The case may be installed through-the-walll as optional.
Read completely, then follow step-by-step.
NOTE: Obtain all materials locally for mounting the air
conditioner through-the-wall.
Through-the-wall installation is not appropriate, if any of 
the side or top louvers of case is 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 correct 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.
Building a wooden frame is required when install the case
through-the-wall. The opening and dimension of wooden
frame is required as below.
IMPORTANT
Frame Max. Thickness
Inside Frame Width
Inside Frame Height
The Maximum
Wall thickness
8 9/10”(225mm)
Inside
Frame
Height
Frame
Thickness
8 9/10”( 225 mm)
1.Build a wooden frame into the wall opening and make 
 sure fasten securely, which is suitable to the WALL 
 OPENING REQUIREMENT.
2.Remove the air conditioner from the carton box and 
 take off the chassis as window mounting installation.
3.Place the cabinet into the wooden frame, and lock the 
 cabinet by the top rail hole and bottom chassis hole with
 1” long wood screws as shown, from inside to outside.
4. Assemble the two Support Bracket with Sill Angle 
 Bracket to the cabinet against to the wooden frame as 
 window mounting installation instructions.
5. Assemble the chassis into the cabinet and fasten or 
 lock it, as window mounting installation instructions.
Sill angle bracket
Support bracket
Bolt and
Locknut
NOTE: The allowed maximum wall thickness is less than
8 9/10”. Otherwise, the wall will block the air inlet of
outdoor side, it will effect the normally operation of unit.
20”( 508 mm)
15-1/5”(385 mm)
Inside
Frame
Width










