Heat Pump Wiring Diagrams

Wire Size: 18 Gage
1(800) 865-5931
www.alpinehomeair.com
AC Heat Pump with Variable Speed Air Handler and Single
Stage Electric Backup Heat Control Wiring
15
Some AC Systems will have a blue wire with a pink stripe in place of the yellow or Y wire.
This diagram is to be used as reference for the low voltage control wiring of your heating and AC system. Always refer to your thermostat or equipment
installation guides to verify proper wiring.
NOTE
24 Volt+
Fan Only Operation
Common
Air Conditioning-Heat Pump
Reversing Valve
1st Stage Heat Gas
Electric Backup Heat
O
AUX/E
Single Stage Heat Pump
Thermostat
Variable Speed Air Handler
Heat Pump Condenser
Low Voltage Connection
O
O
O
AUX/E
Tied together
Y1
Y2
W1