42VMC
Electrical connections
Heat pump
E N G L I S H
Unit | 42VMC 009, 012, 014 |
System |
L N N
Y O W2
L N N Y O W2
50Hz~ 
230V 
N Y O W2
Unit
42VMC 018, 024
System
R C Y
O W2 S
50Hz~ 
230V
R C Y O W2 S
L N R C Y O W2 S
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| Minimum connection wire size between |
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| indoor and outdoor units (mm2) |
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Model | L | N | N | R | C | Y | O |
| W2 | S |
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42VMC 009 | 2.5 | 2.5 | 1.5 | – | – | 1.5 | 1.5 |
| 1.5 | – |
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42VMC 012, 014 | 2.5 | 2.5 | 2.5 | – | – | 2.5 | 2.5 |
| 2.5 | – |
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42VMC 018, 024 | – | – | – | 1.5 | 1.5 | 1.5 | 1.5 |
| 1.5 | 1.5 |
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Terminal box legend
Earth.
LLive power supply.
N Neutral power supply.
N Neutral connection indoor/outdoor unit. R Live connection indoor/outdoor unit.
C Neutral connection indoor/outdoor unit. Y Compressor interlocking contact.
O Reversing valve control.
W2 Outdoor fan signal.
SDefrost end signal.
10120
10 100
Mains supply connecting cable
(field wiring).
Connecting cable,
Indoor unit
Outdoor unit
Main switch
GB - 11