INSTALLATION INSTRUCTIONS
Step 3: Drill Wall Hole For Connective Piping
A hole must be drilled through the wall to the outside to accommodate the refrigerant piping, the drainage
pipe and the signal cable that will connect the indoor and outdoor units.
1. Determine the location of the wall hole based on the position of the mounting plate. See Step 2 for
mounting plate dimensions.
2. The wall hole should have a 65 mm (2.5 in) diameter and it should be drilled on a downward angle to
facilitate drainage. The outdoor end of the hole should be lower than the indoor end of the hole by 5 - 7
mm (0.2 - 0.275 in).
3. Place the protective wall cuff in the hole. This will protect the edges of the hole and will help seal the
hole once the installation is complete.
Note: When drilling the wall hole, make sure to avoid wires, plumbing and other sensitive components that
could be within the wall.
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