![background image](http://html.mh-extra.com/html/carrier/puron-38gls-07g-703ec-40/puron-38gls-07g-703ec-40_installation-manual_2561448009.webp)
38GLS…G / 38YL-…G Puron
GB - 8
Electrical connections
Heat pump unit
Heat pump system
Cooling only unit
Cooling only system
햲
Connecting cable, indoor-outdoor units
(field wiring).
햳
Mains supply connecting cable
(field wiring).
쐃
Indoor unit
쐇
Outdoor unit
쐋
Main switch
쐏
Time-delay fuse or circuit breaker
(see table V "Electrical data").
햲
햳
햲
햳
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).