Wire Connections - TOTALINE P374-1 700 Installation Instructions Manual

SECTION 3

Wire Connections

Wire Connections
If the terminal designations on your old
3
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
Function
terminal marked
G or F
Y1, Y or C
W1, W or H
Rh, R, M, Vr, A
C
Common
O/B
Rev. Valve
2nd Stage Heat
W2
RS+5
Remote Sensor +5vdc
RSGND
Remote Sensor Ground
RS2
Remote Sensor Signal #2
** O/B is used if your system is a Heat Pump.
Install on the
new thermostat
connector marked
Fan G
Cooling Y1
W1/O/B
Heating
Power R
C
W1/O/B**
W2
RS+5
RSGND
RS2
Page 3.1
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