Trane A4AH6E19A1B30B - Technical Data and Schematics; Field Wiring and Electrical Schematics

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18-GF14D1-1C-EN
Field Wiring
Figure 4. Field Wiring Diagram — A4AH6E
R
G
B
W1
W2
R
B
O
Y
X2
R
G
B/C
O
Y
W
HEAT PUMP SYSTEMS
Blue
24 VAC HOT
FAN
24 VAC
Common
SOV
COOL/HEAT
1st STAGE
HEATING
2nd STAGE
EMERGENCY
HEAT
Thermostat Air Handler
Outdoor
Unit
Pink Black
W2
Pink
White
White
X2
AC SYSTEMS
R
G
B
W1
B
Y
R
G
B/C
Y
W
Blue
24 VAC HOT
FAN
24 VAC
Common
COOLING
HEAT
Thermostat Air Handler
Outdoor
Unit
In AC systems for multiple stages of electric heat, jumper W1
and W2 together if comfort control has only one stage of heat.