Venstar T0140 - Manual (Page 12)

Wire Connections
If the terminal designations on your old
thermostat do not match those on the
new thermostat, refer to the chart below
or the wiring diagrams that follow.
Wire from the
old thermostat
terminal marked
Function
Install on the
new thermostat
connector marked
(Energize to Heat)
C
Rc, R, M, Vr, A
Y1 or Y
W1, W or H
G or F
B
O
Common
Power
Cooling
Auxiliary Heat
Fan
Rev. Valve
Rev. Valve
C (optional)
R
Y
W
G
B
O
(Energize to Cool)
Page 12
OWNER'S MANUAL T0140
70
HEAT