6200 Troup Highway
Tyler, TX 75707
www.trane.com
www.americanstandardair.com
Procedure:
1. Remove valve cover, control box
cover, and access panel.
2. Using the blue wire supplied with the
kit and the existing wire nut, fasten
the stripped end of the blue wire
to the unit’s low voltage common
connection (B) at the low voltage
common thermostat wire connection.
See Figure 1.
3. Route the ring terminal end of the
blue wire along the same path as the
other low voltage wires entering into
the unit control box.
4. Using the screw supplied with the kit,
fasten the ring terminal end of the
blue wire to the control box utilizing
one of the screw starting dimples in
the control box. See Figure 2.
5. The ring terminal connection should
be a minimum of 1/4” from any other
electrical connection or terminal in
the box.
6. Install all covers and panel.
Figure 2
Figure 1
Heat Pump
Neatly bundle all low voltage
wires behind the service valve
cover as shown.
Yellow/Red
Field wiring
Yellow
Blue
Black
(X2)
Red
Orange
B - Blue
Y1 - Yellow
Y2 - Brown
R - Red
O - Orange
W1 - White
Blue Wire
Supplied
with Kit
2 18-HH28D1-3
Attached
Ring
Terminal
See Figure 1 for Field Connections