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Wire Connections
* 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
PowerRh, R, M, Vr, A R
C
O/B
C
Common
Rev. Valve
W2
2nd Stage Heat
Y2 Y2
H, HUM HUM
CKGND
Ck1
Dry Contact Switch
Dry Contact Switch
DRY CONTACT
DRY CONTACT
W1/O/B*
W2
D, DEHUM DEHUM
2nd Stage Cooling
Humidity
Dehumidity
Wire Connections
Installation Instructions
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.
REMOTE/
OUTDOOR
REMOTE/
OUTDOOR
S1, OUT -
S2, OUT +
Remote/Outdoor
Sensor
Remote/Outdoor
Sensor
D_TSTATD2200C-2_Manual_HR.pdf 16 8/29/13 1:11 PM
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