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Piping installation
Installer reference guide
39
C FVXM25~50A
Split system air conditioners
4P625991-1C – 2021.09
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 on the indoor unit as follows:
a
b
c
d
a
Gas pipe
b
Gas pipe insulation
c
Liquid pipe
d
Liquid pipe insulation
NOTICE
Make sure to insulate all refrigerant piping. Any exposed piping might cause
condensation.
3
Close the slit on the refrigerant pipe connection and secure it with a tape
(field supply). Make sure there are no gaps.
4
Wrap the slit and the end of the insulation of the connected refrigerant piping
with insulation piece (accessory). Make sure there are no gaps.
a
b
a
a
e
b
e
c
b
a
d
c
d
b
a
Refrigerant pipe connection
b
Refrigerant piping (field supply)
c
Slit
d
Tape
e
Insulation piece (accessory)
Summary of Contents for Perfera CVXM20A3V1B
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