Section 11. Electrical - Low Voltage - Trane A4AC6018A1000A Installer's Manual

Section 11. Electrical - Low Voltage

11.1 Low Voltage Maximum Wire Length
Table 11.1 defines the maximum total length of
low voltage wiring from the outdoor unit, to the
indoor unit, and to the thermostat.
11.2 Low Voltage Hook-up Diagrams
HEAT PUMP SYSTEMS
Thermostat
24 VAC HOT
FAN
24 VAC
B/C
Common
SOV
COOL/HEAT
1st STAGE
HEATING
2nd STAGE
EMERGENCY
HEAT
88-A4AC6001-1E-EN
Outdoor
Air Handler
R R
G G
B
Blue
O
Y
W1
W
White
W2
X2
Pink
In AC systems for multiple stages of electric heat, jumper W1
and W2 together if comfort control has only one stage of heat.
AC SYSTEMS
Thermostat
Unit
R R
24 VAC HOT
G
FAN
24 VAC
B B/C
Common
O
COOLING
Y Y
HEAT
W
X2
Black
Table 11.1
24 VOLTS
WIRE SIZE MAX. WIRE LENGTH
18 AWG 150 Ft.
16 AWG 225 Ft.
14 AWG 300 Ft.
Outdoor
Air Handler
Unit
R
G
B
B
Blue
Y
W1
White
W2
Pink
13