Installation Manual

Page 17 mrcool.com
Indoor Unit Installation
SIGNAL CABLE PROTECTION
The signal cable must be protected by conduit
before being pushed through the wall hole.
2. Using vinyl tape, attach the drain hose to the
underside of the refrigerant pipes.
3. Using insulation tape, wrap the refrigerant pipes
and drain hose tightly together. Double-check
that all items are bundled in accordance with
Fig. 4.8.
DO NOT WRAP ENDS OF PIPING
When wrapping the bundle, keep the ends of
the piping unwrapped. You need to access them
to test for leaks at the end of the installation
process (refer to Electrical Checks and Leak
Checks section of this manual).
Step 8: Mount indoor unit
Step 7: Wrap piping
Before passing the piping and drain hose through
the wall hole, you must bundle them together to
protect them, insulate them, and save space.
1. Bundle the drain hose and refrigerant pipes
according to Fig. 4.8.
DRAIN HOSE MUST BE ON BOTTOM
Make sure that the drain hose is at the bottom
of the bundle. Putting the drain hose at the top of
the bundle can cause the drain pan to overflow,
which may lead to fire or water damage.
Indoor Unit
Space behind unit
Refrigerant piping
Drain hose
Insulation tape
Fig. 4.8
If you installed new connective piping to the
outdoor unit, do the following:
If you have already passed the refrigerant piping
through the hole in the wall, proceed to Step 4.
Otherwise, double-check that the ends of the
refrigerant pipes are sealed to prevent dirt or
foreign material from entering the pipes.
Slowly pass the wrapped bundle of refrigerant
pipes and drain hose through the hole in the wall.
Hook the top of the indoor unit on the upper
hook of the mounting plate.
Check that unit is hooked firmly on mounting
plate by applying slight pressure to the left and
right-hand sides of the unit. The unit should not
jiggle or shift.
Using even pressure, push down on the bottom
half of the unit. Keep pushing down until the unit
snaps onto the hooks along the bottom of the
mounting plate.
Again, check that the unit is firmly mounted by
applying slight pressure to the left and the
right-hand sides of the unit.
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