Carrier REFRIGERANT R-410A Installation And Service Instructions Manual page 19

Fig. 17 — Unit Wiring
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LEGEND
EQUIP — Equipment
GND — Ground
HC — Heating Contactor
HTR — Electric Heater
IFC — Indoor-Fan Contactor
IFM — Indoor-Fan Motor
TB — Terminal Block
T'STAT — Thermostat
Factory Wiring
Field Control Wiring
NOTE: Use copper conductors only.