Wire Connections - Daikin DT4273C Owner's Manual & Installation Manual

Installation Instructions

Wire Connections

If the terminal designations on your old thermostat do not match those
on the new thermostat,
diagrams that follow.
Wire from the
old thermostat
terminal marked
G or F
Y1, Y
W1, W
Rh, R, M, Vr, A
C
O/B
W2
Y2
W3
OUT -
OUT +
refer to the chart below or the wiring
2nd Stage Heat
2nd Stage Cooling
3rd Stage Heat
Outdoor Sensor
Outdoor Sensor
* O/B is used if your system is a Heat Pump.
Function
Fan
Cooling
Heating
Power
Common
Rev. Valve
72
Install on the
new thermostat
connector marked
G
Y1
W1/0/B
R
C
W1/O/B*
W2
Y2
W3
SENSOR
SENSOR