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7 Electrical installation
Installation manual
19
2MXM-A, 3MXM-A, 4MXM-A, 5MXM-A
R32 Split series
3P600450-6R – 2022.05
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.
AC
DC
DC
S20
S
21
S
22
S
23
S92
S93
S40
S80
S7
0
U
W
V
D
C
-
FU2
S9
0
S2
4
AL2 AL1
e
f
g
h
a
b
c
d
DC(-)
FU2
a
AL1, AL2 - solenoid valve lead wire connector*
b
S20~24 - electronic expansion valve coil lead wire
connector (room A, B, C, D, E)*
c
S40 – thermal overload relay lead wire and high pressure
switch connector*
d
Multimeter (DC voltage range)
e
S90~93 – thermistor lead wire connector
f
S70 - fan motor lead wire connector
g
S80 - 4-way valve lead wire connector
h
Compressor lead wire connector
*May differ depending on the model.
7.1
Specifications of standard wiring
components
Component
Power supply
cable
Voltage
220~240 V
Phase
1~
Frequency
50 Hz
Wire type
See table below (
A
)
Interconnection cable
(indoor↔outdoor)
4-core cable 1.5 mm
2
or
2.5 mm
2
and applicable for
220~240 V
H05RN-F (60245 IEC 57)
Recommended circuit breaker
See table below (
B
)
Residual current device
MUST comply with
applicable legislation
Model
A
B
3MXM40
3- core cable 2.5 mm
2
H05RN-F (60245 IEC 57)
H07RN-F (60245 IEC 66)
3- core cable 4.0 mm
2
H07RN-F (60245 IEC 66)
16 A
2MXM68,
3MXM52,
3MXM68,
4MXM68
20 A
4MXM80
3- core cable 4.0 mm
2
H07RN-F (60245 IEC 66)
25 A
5MXM90
32 A
Electrical equipment must comply with EN/IEC 61000-3-12, the
European/International Technical Standard setting the limits for
harmonic currents produced by equipment connected to public low-
voltage systems with input current >16 A and ≤75 A per phase.
7.2
To connect the electrical wiring to
the outdoor unit
1
Remove the switch box cover (1 screw).
1
1×
2
2
Connect the wires between the indoor and outdoor units so that
the terminal numbers match. Make sure to match the symbols
for piping and wiring.
3
Make sure to connect correct wiring to correct room.
e
-B
e
-E
e
-C
e
-D
a
-A
e
-A
a
-C
a
-D
a
-E
a
-B
b
c
d
a
Terminal for room (A, B, C, D, E)*
b
Circuit breaker
c
Residual current device
d
Power supply wire
e
Interconnection wire for room (A, B, C, D, E)*
*May differ depending on the model.
4
Tighten the terminal screws securely using a Philips
screwdriver.
5
Check that the wires do not disconnect by pulling them lightly.
6
Firmly secure the wire retainer to avoid external stress on wire
terminations.
7
Pass the wiring through the cutout on the bottom of the
protection plate.
8
Make sure the electrical wiring does not contact with the gas
piping.
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