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27
Page 24
Indoor Unit
Installation
1.
O
pen front panel of the indoor unit.
2.
Using a screwdriver, open the wire box cover
on the right side of the unit. This will reveal
the terminal block.
Terminal block
Wire cover
Screw
Cable clamp
WARNING
3.
Unscrew the cable clamp below the terminal
block and place it to the side.
4.
Facing the back of the unit, remove the plastic
panel on the bottom left-hand side.
ALL WIRING MUST BE PERFORMED
STRICTLY IN ACCORDANCE WITH THE
WIRING DIAGRAM LOCATED ON THE
BACK OF THE INDOOR UNIT S FRONT
PANEL .
’
5.
Feed the signal wire through this slot, from
the back of the unit to the front.
6.
Facing the front of the unit, connect the wire
according to the indoor unit’s wiring diagram,
connect the u-lug and firmly screw each wire
to its corresponding terminal.
CAUTION
DO NOT MIX UP LIVE AND NULL WIRES
This is dangerous, and can cause the air
conditioning unit to malfunction.
7.
After checking to make sure every connection
is secure, use the cable clamp to fasten the
signal cable to the unit. Screw the cable clamp
down tightly.
8.
Replace the wire cover on the front of the
unit, and the plastic panel on the back.
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 can lead to fire or water
damage.
DO NOT INTERTWINE SIGNAL CABLE WITH
OTHER WIRES
While bundling these items together, do not
intertwine or cross the signal cable with any
other wiring.
2.
Using adhesive vinyl tape, attach the drain
hose to the underside of the refrigerant pipes.
3.
Using insulation tape, wrap the signal wire,
refrigerant pipes, and drain hose tightly
together. Double-check that all items are
bundled.
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).
NOTE ABOUT WIRING
THE WIRING CONNECTION PROCESS MAY
DIFFER SLIGHTLY BETWEEN UNITS AND
REGIONS.
Before passing the piping, drain hose, and the
signal cable through the wall hole, you must
bundle them together to save space, protect
them, and insulate them(Not applicable in
North America).
1.
Bundle the drain hose, refrigerant pipes, and
signal cable as shown below:
Indoor Unit
Space behind unit
Refrigerant piping
Drain hose
Signal wire
Insulation tape
Step 7: Wrappiping and cables
Page 25
Indoor Unit
Installation
Move to left or right
30-50mm
(1.2-1.95in)
30-50mm
(1.2-1.95in)
UNIT IS ADJUSTABLE
Keep in mind that the hooks on the mounting
plate are smaller than the holes on the back of
the unit. If you find that you don’t have ample
room to connect embedded pipes to the indoor
unit, the unit can be adjusted left or right by
about 30-50mm (1.25-1.95in), depending on
the model.
Step 8: Mount indoor unit
If you installed new connective piping to the
outdoor unit, do the following:
1.
If you have already passed the refrigerant
piping through the hole in the wall, proceed
to Step 4.
2.
Otherwise, double-check that the ends of the
refrigerant pipes are sealed to prevent dirt or
foreign materials from entering the pipes.
3.
Slowly pass the wrapped bundle of refrigerant
pipes, drain hose, and signal wire through the
hole in the wall.
4.
Hook the top of the indoor unit on the upper
hook of the mounting plate.
5.
Check that unit is hooked firmly on mounting
by applying slight pressure to the left and
right-hand sides of the unit. The unit should
not jiggle or shift.
6.
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.
7.
Again, check that the unit is firmly mounted
by applying slight pressure to the left and the
right-hand sides of the unit.
If refrigerant piping is already embedded in
the wall, do the following:
1.
Hook the top of the indoor unit on the upper
hook of the mounting plate.
2.
Use a bracket or wedge to prop up the unit,
giving you enough room to connect the
refrigerant piping, signal cable, and drain
hose.
3.
Connect drain hose and refrigerant piping
(refer to Refrigerant Piping Connection
section of this manual for instructions).
4.
Keep pipe connection point exposed to
perform the leak test (refer to Electrical
Checks and Leak Checks section of this
manual).
5.
After the leak test, wrap the connection point
with insulation tape.
6.
Remove the bracket or wedge that is propping
up the unit.
7.
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.
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