Trane TAM7A0A24H21SC Installer's Manual page 34

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
Com for t Control
X2
W White
G
Green
Y1
O
R
Ye llo w
Orange
B
Re d
Blue
Field wiring
• * For multiple stages of electric heat, jumper W1, W2, and W3 together if control has only one stage of heat.
• Yi and Y0 connections must be made as shown for freeze protection and internally mounted condensate overflow circuits to work properly.
OD unit pump down may occur if these connections are not made correctly.
• 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 Y1 of the Airflow control.
34
Figure 2. Field Wiring — Single Stage HP
Neatly bundle
wires behind
cove r a s s h o w n .
Air Handler
W3 *
W2
W1 - White
W1
BK
G
Y2
YI (In)
O - Orange
O
R R - Re d
B B - Blue
(Out)
YO
Y1 - Ye llo w
Heat P u m p
a ll lo w vo lta g e
th e s e rvice va lve
Blac k
(X2)
Ora n g e
Re d
Blue
Ye llo w
18-GJ06D2-2A