Trane 4TWB3018D Installer's Manual page 15

GAM5 Air Handler
Hook-up Diagram
Comfort Control
White
W
Green G
Yellow
Y
Orange
O
Red R
Blue B
Field wiring
GAM2 Air Handler
Hook-up Diagram
Comfort Control
White W
Green
G
Yellow Y
Orange O
Red
R
Blue
B
Field wiring
18-BC85D1-2
W2 Pink
W3 Brown
W1 White
White
Green
Yellow
Orange
Red
Blue
• * For multiple stages of electric heat, jumper W1, W2, and W3 together if comfort control has only one stage of heat
• Some models have a terminal strip. Refer to air handler Installer's Guide.
W2 Pink
W3 Brown
W1 White
Blue
White
Green
Yellow
Orange
Red
Blue
• * For multiple stages of electric heat, jumper W1, W2, and W3 together if comfort control has only one stage of heat
Heat Pump
Black
Air Handler
(X2)
Orange
R - Red
B - Blue
Y - Yellow
Heat Pump
Black
Air Handler
(X2)
Orange
R - Red
B - Blue
Y - Yellow
Yellow
Red
Blue
Yellow
Red
Blue
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