Installation Manual For Indoor Unit
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.)
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| Circuit | breaker | Power source | Earth leakage breaker | |
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Item | Phase | Switch breaker | Overcurrent protector | wire size | Switch | Leak |
| (A) | rated capacity (A) | (minimum) | breaker | current | |
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| 1 | 30 | 20 | 2.5mm2 | 30 | 30mA |
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| 1 | 40 | 36 | 4.0mm2 | 40 | 30mA |
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(2) Wiring connection
HDU-18HF03
HDU-28HF03
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| INDOOR UNIT |
1 | 2 | 3 | 4 | 5 | N | L | TERMINAL BLOCK |
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| POWER SUPPLY: |
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| Y/G |
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1(L) 2(N) 3 4 | OUTDOOR UNIT |
| TERMINAL BLOCK |
Y/G
L N
POWER SUPPLY:
| 1 | 2 | 3 | 4 | 5 | |||
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L | N | 3 | 4 | 5 | ||||
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Y/G
OUTDOOR UNIT
TERMINAL BLOCK
Y/G
INDOOR UNIT
TERMINAL BLOCK
HDU-18CF03
HDU-28CF03
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| INDOOR UNIT |
1 | 2 | 3 | 4 | 5 | N | L | TERMINAL BLOCK |
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| POWER SUPPLY: |
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| Y/G |
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1(L) 2(N) 3 4 | OUTDOOR UNIT |
| TERMINAL BLOCK |
Y/G
L N
POWER SUPPLY:
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| Y/G |
1 | 2 | 3 | OUTDOOR UNIT |
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| TERMINAL BLOCK |
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| Y/G |
L | N | 3 | INDOOR UNIT |
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| TERMINAL BLOCK |
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