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.
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.
Installation Procedure
26
Selection of size of power supply and interconnecting wires
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 terminals.
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)
301 40 30 6.0 40
AD48NS1ERA(S)(Outdoor 3 phase type)
Outdoor unit
terminal block
Indoor unit
terminal block
Power supply:1PH,220-230V~,50Hz
Y/G
1 2 3
Y/G
1 2 3
L N
Outdoor unit
terminal block
Indoor unit
terminal block
Power supply:380-400V, 3N~,50Hz
Y/G
1 2 3
Y/G
1 2 3
R S T N
301 40 26 4.0 40
AD28MS2ERA(S) AD28MS2ERA(S)(D)
AD28NS1ERA(S) AD36NS1ERA(S)
AD48NS1ERA(S)
AD12MS1ERA AD12MS1ERA(D)
AD18MS1ERA AD18MS1ERA(D)
AD24MS1ERA AD24MS1ERA(D)
AD24MS2ERA AD24MS2ERA(D)
AD12MS1ERA AD12MS1ERA(D)
AD18MS1ERA AD18MS1ERA(D)
AD24MS1ERA AD24MS1ERA(D)
AD24MS2ERA AD24MS2ERA(D)
AD28MS2ERA(S) AD28MS2ERA(S)(D)
AD28NS1ERA(S) AD36NS1ERA(S)
AD48NS1ERA(S)(Outdoor single phase type)