Wire Connections - Prostat OEM Series Installer Manual

Wire Connections PSP1100
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
C
R, M, Vr, A
Y1 or Y
W1, W or H
G or F
RC, R, M, Vr, A
O/B
* The RC and RH terminals have a factory installed jumper to control single transformer systems.
Remove this jumper to control dual transformer systems.
Wire Connections PSP2100
Wire from the
old thermostat
terminal marked
C
Rc, R, M, Vr, A
Y1 or Y
W1, W or H
G or F
B
O
Installer Guide
Function
Common
Power
(Heating Transformer)
Cooling
Heating
Fan
Power
(Cooling Transformer)
Rev. Valve
Function
Common
Power
Cooling
Auxiliary Heat
Fan
Reverse Valve
(Energize to Heat)
Reverse Valve
(Energize to Cool)
12
Install on the
new thermostat
connector marked
C (optional)
RH*
Y
W
G
RC*
O/B
Install on the
new thermostat
connector marked
C (optional)
R
Y
W
G
B
O