User Manual

21
WIRING DIAGRAMS (Cont.)
Heat Pump
Fan Coil or Furnaces
Stage 2 Heat Pump and Auxiliary Heat
W2W1O/B Y1 Y2 R C W1O/B* W2 Y1 GY/Y2 R C
Rc
G
Y/Y1
W/W1
(AUX1)
O/B
ACC–
ACC+
W2
(AUX2)
Y2
C
R
H
* Connect to O/B terminal on furnace ir fan coil, if available
A14503B
Fig. 12 -- Heat Pump (Air or Geothermal) With Auxiliary Heat--
Two Stages