42 HWS
GB - 10
Electrical connections
Cooling only
Heat pump
IMPORTANT: Use a separate bipolar wire to connect S1 and S2 terminals.
Terminal box legend, all models
Earth.
L
Live power supply.
N
Neutral power supply.
R
Live connection indoor/outdoor unit.
C
Neutral connection indoor/outdoor unit.
Y
Compressor interlocking contact.
O
Reversing valve control (heat pump only).
W2 Outdoor fan signal (heat pump only).
S1 Outdoor coil sensor (heat pump only).
S2 Outdoor coil sensor (heat pump only).
쐃
Indoor unit
쐇
Outdoor unit
쐋
Main switch
쐏
Time-delay fuse or circuit breaker
(see outdoor unit installation manual)
햷
Interconnecting wire, indoor-outdoor units (field wiring).
햸
Mains supply connecting cable.
Only for sizes 07, 09 and 12 mains supply connection
can be made either to the indoor or the outdoor unit.
