Field Wiring Diagrams - Trane 5TEM4B02AC21SA 5TEM4B03AC31SA Installation, Operation And Maintenance Manual

Field Wiring Diagrams

Single Stage, Cooling Only
Thermostat
24 VAC HOT
FAN
24 VAC
Common
COOLING
1st STAGE
HEATING
1st STAGE
HEATING
2nd STAGE
2 Stage Indoor Airflow, Cooling Only
Thermostat
24 VAC HOT
FAN
24 VAC
Common
COOLING
1st STAGE
COOLING
2nd STAGE
HEATING
1st STAGE
HEATING
2nd STAGE
Notes:
1. Units with pigtails require wirenuts for connections.
2. Cap all unused wires.
3. In AC systems for multiple stages of electric heat, jumper W1 and W2 together if comfort control has only one stage of heat.
18-GF78D1-1A-EN
Air Handler Outdoor
R R
G G
B
B B
Blue
Y1
Y
Y2
Y0
Y
YL/BLK
W1
W1
White
W2
W2
White
Outdoor
Air Handler
R R
G G
B
B B
Blue
Y1
Y1
Y2 Y2
Y0
Y
YL/BLK
W1
W1
White
W2
W2
White
Single Stage, HP
Thermostat Air Handler
R R
24 VAC HOT
G G
FAN
B
24 VAC
B
Common
Blue
O
SOV
COOL/HEAT
Y Y1
1st STAGE
Y2
Y0
YL/BLK
W1
AUX/EMERGENCY
W1
HEAT 1st STAGE
White
W2
AUX/EMERGENCY
W2
HEAT 2nd STAGE
Pink
2 Stage Indoor Airflow, HP
Thermostat Air Handler
R R
24 VAC HOT
G G
FAN
B
24 VAC
B
Common
Blue
O
SOV
COOL/HEAT
Y1
Y1
1st STAGE
COOL/HEAT Y2 Y2
2nd STAGE
Y0
YL/BLK
HEATING
W1
W1
2nd STAGE
White
EMERGENCY
W2
W2
HEAT
White
Outdoor
R
B
O
Y
X2
Black
Optional
Outdoor
R
B
O
Y
X2
Black
Optional
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