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Indoor Heat Exchanger
7. Indoor Heat Exchanger
Warning
Caution
Step
1
Pull out the drain hose.
2
Unscrew the flare nuts
for gas piping and liquid
piping.
3
Remove the 2 screws.
4
Detach the indoor unit
from the installation
plate.
5
Slightly pull out the
auxiliary piping.
14
Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
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.
When removing or reinstalling the indoor heat exchanger, be sure to wear gloves or
wrap the indoor heat exchanger with cloths. (You may be injured by the fins.)
Be sure to conduct pump down operation before disassembling the refrigerant pipe.
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.
From the viewpoint of global environmental protection, make sure to use a vacuum
pump for air purging.
Procedure
Gas piping
Auxiliary piping
Indoor heat exchanger can
be removed without
removing the drain pan.
Insertion of a wooden base
facilitates the removing
work.
Drain hose
Place a plastic sheet around
the drain pan to prevent
wetting the floor with the
(R20163)
remaining drain.
If the drain hose is
embedded in the wall,
disconnect the drain hose
beforehand.
Carry out the removal work
with 2 wrenches.
When the pipings are
disconnected, protect the
openings of both the pipes
(R20164)
and the indoor unit from
moisture intrusion.
(R20174)
Si041403EB
Points
Removal Procedure
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