8 Finishing the outdoor unit installation
Installation manual
12
ARXF20~42E5V1B
R32 split series
3P650253-12T – 2023.04
WARNING
Do NOT connect the power supply to the indoor unit. This
could result in electrical shock or fire.
WARNING
▪ Do NOT use locally purchased electrical parts inside
the product.
▪ Do NOT branch the power supply for the drain pump,
etc. from the terminal block. This could result in
electrical shock or fire.
WARNING
Keep the interconnection wiring away from copper pipes
without thermal insulation as such pipes will be very hot.
7.1
Specifications of standard wiring
components
NOTICE
We recommend using solid (single-core) wires. If stranded
wires are used, slightly twist the strands to consolidate the
end of the conductor for either direct use in the terminal
clamp or insertion in a round crimp-style terminal. Details
are described in "Guidelines when connecting the electrical
wiring" in the installer reference guide.
Component
Power supply cable Voltage
220~240 V
Phase
1~
Frequency
50 Hz
Wire sizes
MUST comply with
applicable legislation
Interconnection cable
(indoor↔outdoor)
4-core cable ≥1.5 mm² and
applicable for 220~240 V
Recommended field fuse
16 A
Earth leakage circuit breaker
MUST comply with
applicable legislation
7.2
To connect the electrical wiring to
the outdoor unit
1
Remove the service cover.
2
Open the wire clamp.
3
Connect the interconnection cable and power supply as follows:
f
50 Hz
220-240 V
a
b
c
d
e
a
Interconnection cable
b
Power supply cable
c
Circuit breaker (field provided fuse with 16 A rating)
d
Residual current device
e
Power supply
f
Earth
3×
4
Tighten the terminal screws securely. We recommend using a
Phillips screwdriver.
8
Finishing the outdoor unit
installation
8.1
To finish the outdoor unit
installation
1
Insulate and fix the refrigerant piping and cables as follows:
g
b
a
f
e
c
d
a
Gas pipe
b
Gas pipe insulation
c
Interconnection cable
d
Field wiring (if applicable)
e
Liquid pipe
f
Liquid pipe insulation
g
Finishing tape
2
Install the service cover.
8.2
To close the outdoor unit
NOTICE
When closing the outdoor unit cover, make sure that the
tightening torque does NOT exceed 1.3 N•m.
1×
2
1
1
9
Commissioning
NOTICE
ALWAYS operate the unit with thermistors and/or pressure
sensors/switches. If NOT, burning of the compressor might
be the result.
9.1
Checklist before commissioning
1
After the installation of the unit, check the items listed below.
2
Close the unit.
