8 Finishing the outdoor unit installation
Installation manual
19
2(A)MXM40+50 + 2(A)MXF40+50
R32 Split series
3P600450-3G – 2021.03
2×
2
1
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 (A to A, B
to B).
e
-A
a
-A
a
-B
e
-B
b
c
d
1
2
3
L
N
1
2
3
f
a
Terminal for room (A, B)
b
Circuit breaker
c
Residual current device
d
Power supply wire
e
Interconnection wire for room (A, B)
f
Wire retainer
4
Tighten the terminal screws securely using a Phillips
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.
1
2
3
1 2 3 1 2 3
2×
1
2
3
L
N
A
B
9
Reattach the switch box cover and the service cover.
8
Finishing the outdoor unit
installation
8.1
To finish the outdoor unit
installation
DANGER: RISK OF ELECTROCUTION
▪ Make sure that the system is earthed properly.
▪ Turn off the power supply before servicing.
▪ Install the switch box cover before turning on the power
supply.
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.
9
Configuration
9.1
About ECONO mode prohibition
setting
This setting disables the input control signal from the user interface.
Use this setting when you wish to block reception of input controls
(cooling/heating) from indoor unit user interfaces.
9.1.1
To turn on ECONO mode prohibition
setting
Prerequisite:
The main power supply MUST be turned off.
1
Remove the top plate of the outdoor unit (2 screws on sides)
2
Remove the electric box cover by sliding it. Be careful not to
bend the electric box hook.
3
Cut the jumper (J23).
