Indoor Unit: 15/18/24 Class SiUS041111
162 Removal Procedure
2.5 Removal of Indoor Heat Exchanger
Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies
before disassembling work.
Step Procedure Points
1. Disconnect the refrigerant
piping.
Preparation
Remove the electrical box
according to the “Removal of
Electrical Box / PCBs / Swing
Motors”.
Caution
If the refrigerant leaks, repair the
spot of leaking, then collect all
refrigerant from the unit. After
conducting vacuum drying,
recharge proper amount of
refrigerant.
Caution
In pump-down work, be sure to
stop the compressor before
disconnecting the refrigerant
pipe. If the refrigerant pipe is
disconnected with the
compressor operating and the
stop valve open, air may be
sucked in and may generate an
over-pressure in refrigeration
cycle, thus resulting in pipe
rupture or accidental injury.
Place a plastic sheet under the
drain pan to prevent from
wetting the floor with remaining
drain.
If the drain hose is embedded in
the wall, disconnect the drain
hose beforehand.
Carry out the removal works
with 2 wrenches.
When the pipings are
disconnected, protect both the
openings of pipe and unit from
entering of moisture.
1
Hold the indoor unit up
with a piece of wood
etc.
2
Pull out the drain hose.
3
Unscrew the flare nut
for gas piping with 2
wrenches.
4
Unscrew the flare nut
for liquid piping with 2
wrenches.
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