Ecobee ecobee3 - Wiring Diagram: Conventional Heating and Cooling; Air Conditioner and Furnace Connections; Two-Stage Heating and Cooling Wiring

29
Conventional heating and cooling
(up to 2 stages each)
Y1 Y2 C Y1 Y2 W1 W2 R C G
Rc
G
Y1
W1
(AUX1)
O/B
ACC–
ACC+
W2
(AUX2)
Y2
C
R
H
Stage 2 heat and cool
if applicable
Air conditioner Furnace
Note: Do not jumper Rc or Rh,
ecobee3 does this automatically.
R can go into either Rc or Rh
terminals on your ecobee3.