Trane TAMXB0A24V21DB Installation, Operation And Maintenance Manual page 38

E E l l e e c c t t r r i i c c a a l l — — L L o o w w V V o o l l t t a a g g e e
1 Stage Cooling or Heat Pump with TAMX Variable Speed Air Handler
COMFORT CONTROL
R
BK
B/C
O
Y1
Y2
G
W1
W2
W3
Notes:
1. Separate the BK and R wires when using the BK functionality from the thermostat or a Humidistat.
2. Y-in and Y-out connections must be made as shown for freeze protection and internally mounted condensate overflow circuits to
function properly.
3. 3rd party condensate switch should break the Y1-in circuit between the thermostat and AHC.
4. X2 is necessary if not using select Trane or American Standard thermostats.
5. For single speed operation, use Y1-out and cap off Y2-out wire.
6. Only needed for heat pump operation.
7. For single stage outdoor operation, must connect Y1–in and Y2–in for full airflow.
R
B
O
Y1in
Y2in
Y1out
38
INDOOR UNIT
Note 1
R
BK
B
O
Note 3 & Note 7
Y1-in
Y2-in
Y1-out
Y2-out
G
W1
W2
W3
For AC only units, move dip switch 1 to the ON position.*
*if not using tech app for configuration.
TAMX 24 Volt Wire Harness Colors
Red
Blue
Orange
Yellow
Yellow/Red
Yellow/ Black
OUTDOOR UNIT
Note 6
Note 2
Note 5
Y2out Orange/Red
G Green
BK Black
W1 White
W2 White/Black
W3 White/Red
R
B
O
Y1
Y2
X2
Note 4
18-GJ89D1-1F-EN