Indoor Heat Exchanger - Daikin FTXR28EV1B9 Service Manual

Indoor Heat Exchanger

11.Indoor Heat Exchanger
Warning
Caution
Step
Disconnect the flare
1
nut for gas piping.
2 Disconnect the flare
nut for liquid piping.
3 Remove the indoor unit
from the installation
plate.
Unfasten the hook of
4
the piping fixture at the
back of the indoor unit
and pull out the pipe.
24
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 protective
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
Hold the indoor unit up with
a piece of wood.
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,
(R5741)
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.
(R5744)
Piping fixture
(R13972)
Si041260
Points
Removal Procedure