PG
18
Wire Reference cont.
Possible Wires
What They Control
Lennox Heat Pump
V or VR or R
RH
Power for HEAT
M or Y
Y
COOL control
Y or W or W2
W2
2nd stage HEAT for heat
pump auxiliary heat
F or G
G
Fan control
R or O
O
X or X2 or C
C
Trane Products [American Standard]
B
C
24VAC power (to power
thermostat)
W or W1
W2
1st stage normal HEAT or 1st
stage heat pump auxiliary heat
X2
Emergency heat (do not connect,
tape off)
Zoned Hot Water Heat -
For Solenoid valve or Motor valve connect the wires
based on diagrams below to the correct terminal on the
CT32. The third wire on your valve may be called 6, Y,
or G.
Your Wires
Thermostat Terminal
2 wire
R
RH
W
W
3 Wire
Solenoid Valves
R
RH
(power)
W
A
(heat ON)
Y or G
(the 3rd wire)
W
(heat OFF)
SOLENOID VALVE
W
A
RH
CT32
M
OTOR VALVE
W
RH A
CT32
FORR 3 WIRE
HOT WATER
W
R
A
W
R
A