Electrical wiring
WARNING
DANGER OF BODILY INJURY OR DEATH
TURN OFF ELECTRIC POWER AT CIRCUIT BREAKER OR POWER SOURCE BEFORE MAKING ANY ELECTRIC
CONNECTIONS.
GROUND CONNECTIONS MUST BE COMPLETED BEFORE MAKING LINE VOLTAGE CONNECTIONS.
Selection of size of power supply and interconnecting wires
Precautions for electrical wiring
Electrical wiring work should be conducted only by authorized personnel.
Do not connect more than three wires to the terminal block. Always use round type crimped terminal lugs with insulated
grip on the ends of the wires.
Use copper conductor only.
Select wire sizes and circuit protection from table below. (This table shows 20 m length wires with less than 2% voltage drop.)
Wiring connection
Make wiring to supply power to the outdoor unit, so that the power for the indoor unit is supplied by outdoor unit.
Item
Model
Phase Switch
breaker
(A)
Circuit breaker
Overcurrent
protector
rated capacity
(A)
Power source
wire size
(minimum)
(mm
2
)
Switch
breaker(A)
Earth leakage breaker
Leak
current(mA)
30
1
40
30
6.0
40
Outdoor 3 phase type
Outdoor unit
terminal block
Indoor unit
terminal block
Power supply:1PH,220-240V~,50/60Hz
Y/G
1 2 3
Y/G
1 2 3
L N
Outdoor unit
terminal block
Indoor unit
terminal block
Power supply:380-415V, 3N~,50/60Hz
Y/G
1 2 3
Y/G
1 2 3
R S T N
30
1
30
26
4.0
40
Outdoor single phase type
Outdoor unit
terminal block
Indoor unit
terminal block
Power supply:1PH,220-240V~,50/60Hz
Y/G
1 2 3
Y/G
1 2 3
L N
Installation Procedure
20
ADH105M1ERG
ADH125M1ERG
ADH140M1ERG
ADH105H1ERG
ADH125H1ERG
ADH140H1ERG
ADH160H1ERG
ADH071M1ERG
ADH071M3ERG
ADH090M1ERG
Except ADH071M3ERG
ADH071M3ERG