7 Electrical installation
Installation manual
11
RXJ42+50A
R32 split series
3P512025-12X – 2021.12
b
Contains fluorinated greenhouse gases
2
1
1
1
2
2
kg
tCO
2
eq
GWP × kg
1000
=
=
+
kg
=
kg
=
GWP: XXX
RXXX
a
f
c
d
e
a
If a multilingual fluorinated greenhouse gases label is
delivered with the unit (see accessories), peel off the
applicable language and stick it on top of
a
.
b
Factory refrigerant charge: see unit name plate
c
Additional refrigerant amount charged
d
Total refrigerant charge
e
Quantity of fluorinated greenhouse gases
of the total
refrigerant charge expressed as tonnes CO
2
equivalent.
f
GWP = Global warming potential
NOTICE
Applicable legislation on
fluorinated greenhouse gases
requires that the refrigerant charge of the unit is indicated
both in weight and CO
2
equivalent.
Formula to calculate the quantity in CO
2
equivalent
tonnes:
GWP value of the refrigerant × total refrigerant
charge [in kg] / 1000
Use the GWP value mentioned on the refrigerant charge
label.
2
Fix the label on the inside of the outdoor unit near the gas and
liquid stop valves.
7
Electrical installation
DANGER: RISK OF ELECTROCUTION
WARNING
▪ All wiring MUST be performed by an authorised
electrician and MUST comply with the applicable
legislation.
▪ Make electrical connections to the fixed wiring.
▪ All components procured on-site and all electrical
construction MUST comply with the applicable
legislation.
WARNING
ALWAYS use multicore cable for power supply cables.
WARNING
Use an all-pole disconnection type breaker with at least
3 mm between the contact point gaps that provide full
disconnection under overvoltage category III.
WARNING
If the supply cord is damaged, it MUST be replaced by the
manufacturer, its service agent or similarly qualified
persons in order to avoid a hazard.
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.
DANGER: RISK OF ELECTROCUTION
All electrical parts (including thermistors) are powered by
the power supply. Do NOT touch them with bare hands.
DANGER: RISK OF ELECTROCUTION
Disconnect the power supply for more than 10 minutes,
and measure the voltage at the terminals of main circuit
capacitors or electrical components before servicing. The
voltage MUST be less than 50 V DC before you can touch
electrical components. For the location of the terminals,
see the wiring diagram.
b
c
DC P1+
DC N1-
a
d
e
g
f
a
Multimeter (DC voltage range)
b
S80 – reversing solenoid valve lead wire
c
S20 – electronic expansion valve lead wire
d
S40 – thermal overload relay lead wire
e
S90 – thermistor lead wire
f
LED
g
S70 – fan motor lead wire
7.1
Specifications of standard wiring
components
Component
Power supply cable Voltage
220~240 V
Phase
1~
Frequency
50 Hz
Wire sizes
3-core cable
2.5 mm
2(a)(b)
/ 4.0 mm
2(b)
(a)
H05RN-F (60245 IEC 57)
(b)
H07RN-F (60245 IEC 66)
Interconnection cable
(indoor↔outdoor)
4-core cable
1.5 mm
2
~2.5 mm
2
and
applicable for 220~240 V
H05RN-F (60245 IEC 57)
Recommended field fuse
13 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
Remove the switch box cover.
3
Open the wire clamp.
4
Connect the interconnection cable and power supply as follows:
