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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.
* O/B is used if your system is a Heat Pump.
Wire from the
old thermostat
terminal marked
Function
Install on the
new thermostat
connector marked
G or F
Fan
G
Y1, Y or C
Cooling
Y1
W1, W or H
Heating
W1/O/B
Power
Rh, R, M, Vr, A
R
C
O/B
C
Common
Rev. Valve
W2
2nd Stage Heat
Y2
Y2
W3
W3
W1/O/B*
W2
2nd Stage Cooling
3rd Stage Heat
Wire Connections
Installation Instructions
Page 43
OUTDOOR
OUTDOOR
OUT -
OUT +
Outdoor Sensor
Outdoor Sensor
Содержание TSTATG4271GT
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