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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.)
(2) 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)
Switch
breaker
Earth leakage breaker
Leak
current
3
30 20 2.5mm
2
30 30mA
HDU-42CF03/H
HDU-42HF03/H
POWER SUPPLY:
3N~,380-400V , 50Hz
N 1 2 3
Y/G
R S T
HDU-42CF03/H
Y/G
L N 3 4 5
R S T N
Y/G
POWER SUPPLY:
3N~,380-400V,50Hz
HDU-42HF03/H
1 2 3 4 5
INDOOR UNIT TERMINAL BLOCK
OUTDOOR UNIT TERMINAL BLOCK
1 2 3 4 5
OUTDOOR UNIT TERMINAL BLOCK
INDOOR UNIT TERMINAL BLOCK
Note: remember to connect the black terminal of indoor unit with the black terminal of outdoor unit
properly using the connecting wire in the accesory bag,and connect the blue terminal of indoor unit
with the white terminal of out terminal as the same(For heat pump model).For cooling only unit,just
connect the black terminalof indoor unit with the black terminal of outdoor unit properly.Otherwise
the wired controller will display "E4" or "E6" malfunction refer to Page.16.
Installation Manual For Electric Wiring