Trane 4TTX8024A Installer's Manual page 14

Communicating Indoor Unit
with 24 V Control Hook-up
Diagram
Comfort Control
Red
R
Yellow
Y1
Brown
Y2
Green
G
White
W1
Black
W2
Purple
W3
B Blue
*AM7 Air Handler
Hook-up Diagram
Comfort Control
W White
Green
G
Yellow
Y1
O
R Red
Blue
B
Y2 Brown
Field wiring
14
Neatly bundle all low voltage
wires behind the service
valve cover as shown.
Comm. Variable Speed
Furnace or Air Handler
R
BK
D
Yellow
Y1
Y2
G
W1
W2
W3
B
O
Neatly bundle all low voltage
wires behind the service
valve cover as shown.
Air Handler
W3
W2
W1
G
(In)
YI
O
R
B B - Blue
(Out)
YO
Y1 - Yellow
Y2
Y2 - Brown
DH/BK
Air Conditioner
Yellow/Black
Brown
Yellow/Red
Blue
Air Conditioner
Blue
Yellow/Black
Must configure to
"ON" for AC Units.
Must configure to "ON" for
two-stage compressors.
Notes:
1. See User Interface
setup menu for 24
VAC control mode
and cooling CFM
options.
2. First stage CFM
options for 4TTX8
are 65–80%.
3. W3 terminal may
Blue
not be present on
indoor unit.
4. Comfort control
may not have W2
or W3 terminals.
Yellow/Red
Control Board
OUTDOOR OUTDOOR
on
} Capacity (Tons)
AC (System)
HP
1 2 (Stages)
1 2 (Compressor)
R4
S1
1 INDOOR
R NET 1
R NET 2
CFM/Ton
R1
U1
Cool Off Delay
R13
Torque
R14
D9
S2
C10
+12V
R22
18-AC95D1-1
on
CFM