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WIRING DIAGRAMS ( cont.)
Furnace Heat Pump
O
RVS Cooling
O/B
W2
Heat Stage 3
(furnace)
WW/W1 W2*
Heat/Cool Stage 1
Y1
Y1
Heat/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
**
* Some heat pumps may designate W1.
**Remove jumper when using split power (Indoor and Outdoor Units
utilize separate transformers).
Thermostat
A12241
Fig. 9 -- Variable Speed, M ulti--St age, Stage Modulating and Single--Stage
Furnace with 2--Stage Heat Pump