Ecobee ecobee3 - PEK Thermostat Wiring Diagram; R Wire to Rc Terminal Connection; PEK to HVAC Equipment Wiring

33
Rc
G
Y1
W1
(AUX1)
O/B
ACC–
ACC+
W2
(AUX2)
Y2
C
R
H
R C G Y W Wire 1
1–wire accessory
(humidifier/dehumidifier/ventilator)
Furnace control board Accessory
Warning! Damage may occur if accessory is connected
to ACC-.
*ecobee3 automatically connects Rc to ACC- when 1-wire configuration
is selected during accessory setup.
*