26
Furnace
Air Conditioner
Heat Stage 2
O/B
W2
Heat Stage 1
W
W/W1
Cool Stage 1
Y1
Y1
Cool Stage 2
Y/Y2
Y/Y2
Y/Y2
Fan
G
G
24VAC Hot Heating
Rh
R
R
24VAC Hot Cooling
Rc
DHUM
24VAC Common
C
COM
C
Y1
Thermostat
(NA)
*
* Remove jumper when using split power (Indoor and Outdoor units
utilize separate transformers).
A12240
Fig. 4 - Variable Speed, Step Modulating, Multi- Stage and Single- Stage
Furnace with 2- Stage Air Conditioner
Equipment configuration: AC