18
5. Electric 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.
(1) Selection of size of power supply and interconnecting wires.
Precautions for Electric wiring
Electric 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.)
Item
Model Phase Switch breaker
(A)
Circuit breaker
Overcurrent protector
rated capacity (A)
Power source
wire size
(minimum)
(mm2)
Switch
breaker(A)
Earth leakage breaker
Leak
current(mA)
Installation Manual For Indoor Unit
140 26 6.0 40
For series 282 362 30
30 20 2.5 30
3
For series
282 362 482 30
30
140 26 4.0 40
For series 242
(2) Wiring connection
For series 182
L N
1 2 3 Y/G
INDOOR UNIT
TERMINAL BLOCK
POWER
1PH, 220-230V~, 50Hz
SUPPLY:
Y/G
1 2 3
OUTDOOR UNIT
TERMINAL BLOCK
Make wiring to supply power to the indoor unit, so that the power for the outdoor unit is supplied by
terminals.
Make wiring to supply power to the outdoor unit, so that the power for the indoor unit is supplied by
terminals.
For series 242 282 362 For series 282 362 482
30
140 26 2.5 40
For series 182
Y/G
Y/G
123NL
123
OUTDOOR UNIT
TERMINAL BLOCK
INDOOR UNIT
TERMINAL BLOCK
OUTDOOR UNIT
TERMINAL BLOCK
INDOOR UNIT
TERMINAL BLOCK
POWER SUPPLY: 380-400V, 3N~, 50Hz
R S T N 1 2 3
1 2 3
Y/G
Y/G
Y/G