Installation Instructions
2
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.
Wire from the
Install on the
old thermostat
Function
new thermostat
terminal marked
connector marked
G or F
Fan
G
Y1, Y
Cooling
Y1
W1, W
Heating
W1/O/B
Rh, R, M, Vr, A
Power
R
C
Common
C
O/B
Rev. Valve
W1/O/B*
W2
2nd Stage Heat
W2
Ck1
Dry Contact Switch
CK
CKGND
Dry Contact Switch
R
* O/B is used if your system is a Heat Pump.
Содержание D2270C
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