Removal Of Indoor Heat Exchanger - Daikin H Series Service Manual

Indoor Unit
1.7

Removal of Indoor Heat Exchanger

Procedure
Step
1. Disconnect the refrigerant
piping.
1 Hold the indoor unit up
with a piece of wood or
other prop.
2 Pull out the drain hose.
3 Unscrew the flare nuts
for gas piping and liquid
piping with 2 wrenches.
Removal Procedure
Warning Be sure to wait for 10 minutes or more after turning off all power supplies
before disassembling work.
Procedure
Drain hose
Liquid piping
(R11406)
(R9569)
Gas piping
(R9570)
SiUS04-924_A
Points
Preparation
 Remove the electrical box
according to the "Removal of
Electrical Box" instructions.
Caution
If the refrigerant leaks, repair the
leak, then collect all refrigerant
from the unit. After conducting
vacuum drying, recharge proper
amount of refrigerant.
Caution
For global environment
protection, be sure to use a
vacuum pump for air purging.
Caution
In pump-down work, be sure to
stop the compressor before
disconnecting the refrigerant
piping. If the refrigerant piping is
disconnected with the
compressor operating and with
the stop valve open, air may be
sucked in to 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 wetting the
floor with remaining drainage.
 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 pipes
and unit from moisture entering.
151