Ecobee ecobee3 lite Installation Manual - page 32
of
44
32
Accessory devices
The ecobee3
can control an accessory HVAC device like a
humidifier, dehumidifier, or ventilation device from its ACC
terminals.
2–wire accessory
(humidifier/dehumidifier/ventilator)
Furnace control board
Accessory
Note:
You will need to configure the accessory device when you
first power on your ecobee3.
Rc
G
Y1
W1
(AUX1)
O/B
ACC–
ACC+
W2
(AUX2)
Y2
C
R
H
R C G
Y W
Wire1 Wire2