Trane 4TWR3 User Manual

18-BC83D1-2 13
11.2 Low Voltage Hook-up Diagrams
Red
Yellow
Green
White
Blue
Orange
W1
O
B
X2
G
Y1
Yellow
Yellow
Blue
Orange
Blue
Black
(X2)
Red
Red
Orange
R
Comfort Control
Air Handler
Heat Pump
Black
W1
W2
W3
G
Y
B
O
BK
Y
LO
R
Neatly bundle all low voltage
wires behind the service
valve cover as shown.
Notes:
1. If electric heat does
not have 3rd contactor
(CH), connect a jumper
wire from W3 to W2. If
electric heat does not
have 2nd contactor
(BH), connect a jumper
wire from W2 to W1.
2. Ylo and BK may not be
present on unit.
3. W1 - X2 is a field
installed jumper.
Air Handler
Hook-up Diagram
Red
Yellow
Green
White
Blue
Orange
W1
O
B
X2
G
Y1
Yellow
Yellow
Blue
Orange
Blue
Black
(X2)
Red
Red
Orange
R
Comfort Control
Comm. Variable Speed
Furnace or Air Handler
Heat Pump
Black
W1
W2
W3
G
Y2
B
O
BK
D
Y1
R
Neatly bundle all low voltage
wires behind the service
valve cover as shown.
Notes:
1. See User Interface 24
V Mode setup menu
for control mode and
cooling CFM options.
2. W3 terminal may not
be present on unit.
3. (Air Handlers only) If
electric heat does not
have 3rd contac-
tor (CH), connect
a jumper wire from
W3 to W2. If electric
heat does not have
2nd contactor (BH),
connect a jumper wire
from W2 to W1.
4. W1 - X2 is a field
installed jumper.
Communicating Indoor Unit
with 24 V Control Hook-up
Diagram

Trane 4TWR3 Specifications

General

Brand	Trane
Model	4TWR3
Category	Heat Pump
Language	English