Part No. 37-7760003 09-2018 18-HD48D1-1A-EN 9
Trane XR302 and XR303 Touchscreen Thermostat
O
Y2
Y1
G
R
B
W2
W1
O
Y2
Y/Y1
R
B
X2
O/B
L
Y2
Y
G
Rc
Rh
C
+
S
-
HM
W2
W/E
6
DHM
Optional
remote
indoor or
outdoor
wired
sensor
FOOTNOTES:
1) A/TCONT302 {does not include humidier(HM) and dehumidier(DHM) terminals}
2) Wire third party condensate overow switches between Y of the thermostat and Y1
of the airow control board
3) X2 is required for aux heat signal during defrost
4) Factory installed jumper
1 or 2 Stage Heat Pump with Variable Speed Furnace
* Caution: Do not run Outdoor/Remote sensor wires
in the same bundle with HVAC wires. Also, keep
away from high voltage wiring to avoid interference.
ThermostatThermostat Indoor Unit Outdoor Unit
1
2
4
3
1
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