Trane Performance Climate Changer Installation, Operation And Maintenance Manual page 166

STEP 4 - Make connections per hookup diagrams.
Air Handler Hook-up Diagram
Cooling
Comfort Control
White W
Green
G
Yellow Y
Orange O
Red R
Blue B
Field wiring
30
Air Handler
W3 *
White
W2
Green
W1
Yellow
G
YI
Red
O **
Blue
R **
B
YO
• * For multiple stages of electric heat, jumper W1, W2, and W3 together if comfort control has only one stage of heat.
• ** R to O jumper must be in place as shown for cooling only, non-heat pump systems for proper operation.
• YI and YO connections must be made as shown for freeze protection and internally mounted condensate overflow circuits to work properly.
• Internally mounted condensate switch is optional and must be ordered separately.
• If 3rd party condensate overflow switches are installed, they should be wired between Y of the thermostat and YI of the EEV control.
B - Blue
Y - Yellow
Air Conditioner
Blue Yellow