Honeywell Prestige THX9000 System Installation Manual page 5

Typical hookup of heat pump system with up to four-stage heat and two-stage cool with one
transformer (4H/2C, 3H/2C, 2H/2C, 2H/1C, 1H/1C heat pump systems).
THM5421R
IAQ DEVICE
SENSOR TYPE
(24 VAC)
TO
THERMOSTAT
EQUIPMENT
IAQ
CONTROL
24V
POWER
SENSORS
5
CHANGEOVER
AUX 1 (HEAT 3)
AUX 2 (HEAT 4)
COMP 1
COMP 2
FAN RELAY
M32055
69-2445EFS—01