20
Electrical connections
3 ELECTRICAL
CONNECTIONS
3.1 Preliminary information
f
ATTENTION ELECTRIC DANGER
– All electrical connections must be done by a
licensed electrician according to the provisions
of national and local electrical codes.
– Only use copper cables.
– Air conditioners must use a dedicated power
supply socket. The power supply voltage
must be in line with the rated voltage.
– Electrical wiring must be carried out by a
qualified technician and must comply with
the circuit diagram labels.
– Before carrying out electrical connections,
close the power supply to prevent electric
shocks from causing injury.
– The air conditioner’s outdoor power supply
must include an earth line, and the earth line
of the power cable to the indoor unit must
be safely connected to the earth line to the
outdoor power supply.
– Differential circuit-breakers must be
configured in compliance with the current
technical standards and requirements for
electrical and electronic devices.
– The connected fixed wiring must be equipped
with a differential circuit-breaker with a contact
separation distance of at least 3 mm.
– The power cable must be at least 300 mm
away from the signalling line in order to
prevent electrical interference, malfunctions
or damage to electrical components.
Similarly, these lines must not come into
contact with pipes or valves.
– The electrical wiring must comply with the
relevant electrical requirements.
– After completing the wiring and connections
and ensuring that they are correct, connect
the power supply.
f
ATTENTION ELECTRIC DANGER
Before making electrical connections, turn off
the main switch of the system.
A
B
B
G
C
E
D
C
A Outdoor power supply
B RCCB
C Earthing line
D Metal wire
E Indoor unit
F Indoor power supply
G Communication cable between the indoor and outdoor
units
Fig. 21
The specifications for the power cable and communication
cable are given below. Wiring with not enough power can
cause the electrical wiring to overheat and result in an
accident if the unit is damaged.
Model 1.7 - 5.2 kW
Power supply
Phase 1-phase
Volts and
frequency
220-240V~50Hz
220-240V~50/60Hz
Communication cable between
the indoor and outdoor units
Shielded 3×AWG16-
AWG18
Communication cable between
the indoor unit and the wired
controller
Shielded AWG16-
AWG20
Fuses 15A
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