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Piping installation
Installer reference guide
37
FTXA25~50(A)(B)2V1B(W)(S)(T)(B)
Daikin room air conditioner
4P518023-3K – 2022.05
A
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
Wrap the refrigerant piping connection using vinyl tape, overlapping at least
half the width of the tape with each turn. Keep the slit of the heat insulation
pipe cover up. Avoid wrapping the tape too tight.
b
a
c d
e
f
e
a
Heat insulation pipe cover (on the indoor unit side)
b
Flare connections
c
Liquid pipe (with insulation) (field supply)
d
Gas pipe (with insulation) (field supply)
e
Slit on heat insulation pipe cover facing up
f
Vinyl tape (field supply)
3
Insulate
the refrigerant piping, interconnection cable and drain hose on the
indoor unit: See
"9.1 To insulate the drain piping, refrigerant piping and
NOTICE
Make sure to insulate all refrigerant piping. Any exposed piping might cause
condensation.