Install Backplate & Wire - TOTALINE P374-1500 Installation Instructions Manual

STEP #3
Remove the backplate connector from the
6:03 70
68 o
Am
Su
C OOL
AUTO
67 H EAT
o
rear of the thermostat. Attach it to the wall.
Install wires as directed below. When
finished, snap thermostat on to backplate.
70
6:03 o If the terminal designations on your old
Am 68
Su
C OOL
AUTO
67 H
EAT o
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
G or F
Y1, Y or C
Rh, R, M, Vr, A
C
O/B
Y2
W2
W
RS+5
RS
RS G
INSTALL BACKPLATE & WIRE
Install on the
new thermostat
Function
connector marked
Fan
Compressor
Power
Common
W1,O,B
Rev. Valve
2nd Stage Comp.
2nd Stage Heat
3rd Stage Heat
Remote Sensor +5vdc
Remote Sensor Signal
Remote Sensor Ground
Page 4
G
Y1
R
C
Y2
W2
W3
RS+5
RS
RS G