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Piping installation
Installer reference guide
37
FTXF20~4 ATXF20~42D5V1B
Daikin room air conditioner
4P519439-16R – 2021.12
Flare tool for R32
(clutch type)
Conventional flare tool
Clutch type
(Ridgid-type)
Wing nut type
(Imperial-type)
A
0~0.5 mm
1.0~1.5 mm
1.5~2.0 mm
5
Check that the flaring is properly made.
a
b
c
a
Flare’s inner surface MUST be flawless.
b
The pipe end MUST be evenly flared in a perfect circle.
c
Make sure the flare nut is fitted.
7.2.6 To connect the refrigerant piping to the indoor unit
WARNING: MILDLY FLAMMABLE MATERIAL
The refrigerant inside this unit is mildly flammable.
▪
Pipe length
. Keep refrigerant piping as short as possible.
1
Connect refrigerant piping to the unit using
flare connections
.
2
Insulate
the refrigerant piping, interconnection cable and drain hose on the
indoor unit as follows:
c
a
b
f
d
g
e
a
Gas pipe
b
Gas pipe insulation
c
Interconnection cable
d
Liquid pipe
e
Liquid pipe insulation
f
Finishing tape
g
Drain hose
NOTICE
Make sure to insulate all refrigerant piping. Any exposed piping might cause
condensation.