Carrier Infinity 25VNA Installation Instructions Manual page 15

User Interface (UI)
D
C
B
A
Humidifier
Fig. 18 - - Infinity Furnace or Fan Coil Wiring with Communicating Variable Speed HP
Conventional
Dual-Fuel
Thermostat
Fig. 19 - - Variable Speed Unit Connected to a Conventional Dual Fuel Thermostat in an Emergency Mode
Furnace or Fan Coil
D
C and D
not required on
C
VS Heat Pump
B
A
Furnace or Fan Coil
A
B
C
D
15
VS HP
No
Use
C
B
A
A12055
VS HP
A
B
C


UT
IL
C
LS
Y
O
A11382