Page 12
A
Run 24VAC control wires through cutout with grommet.
B
Run 24VAC control wires through wire tie.
C
Make 24VAC control wire connections using field provided wire
nuts.
D
Tighten wire tie to security 24V control wiring.
HIGH VOLTAGE FIELD WIRING
LOW VOLTAGE (24V) FIELD WIRING
FACTORY WIRING
CUTOUT WITH
GROMMET
NOTE − FOR PROPER VOLTAGES, SELECT THERMOSTAT WIRE (CONTROL WIRES)
GAUGE PER TABLE ABOVE.
WIRE RUN LENGTH
AWG# INSULATION TYPE
LESS THAN 100’ (30 METERS)
18 TEMPERATURE RATING
MORE THAN 100’ (30 METERS)
16 35ºC MINIMUM.
WIRE NUTS
BLACK
24V CONTROL WIRES
YELLOW
TIGHTEN WIRE TIE
Unit Low Voltage Wiring
NOTE − DO NOT BUNDLE ANY EXCESS 24VAC CONTROL WIRES INSIDE CONTROL
BOX.
NOTE − WIRE TIE PROVIDES LOW VOLTAGE WIRE STRAIN RELIEF AND MAINTAINS
SEPARATION OF FIELD−NSTALLED LOW AND HIGH VOLTAGE CIRCUITS.
A
B
C
D
3
FIGURE 12
Typical 24VAC Control Wiring Diagrams (Field Installed)
THERMOSTAT
INDOOR UNIT
R
C
W1
Y1
O
G
R
C
W1
W2
W3
G
R
C
W1
Y1
O
COMMON
1ST-STAGE
AUXILIARY
HEAT
INDOOR BLOWER
COMPRESSOR
24V POWER
REVERSING VALVE
COMMON
1ST-STAGE
AUXILIARY
HEAT
24V POWER
(SOME CONNECTIONS MAY NOT APPLY. REFER
TO SPECIFIC THERMOSTAT AND INDOOR UNIT.)
OUTDOOR UNIT
R
C
W1
Y1
O
G
R
C
W1
W2
W3
G
E
R
C
W1
Y1
O
EMERGENCY
HEAT
EMERGENCY
HEAT RELAY
OUTDOOR
THERMOSTAT
THERMOSTAT
INDOOR UNIT
OUTDOOR UNIT
COMMON
1ST-STAGE
AUXILIARY
HEAT
INDOOR BLOWER
COMPRESSOR
COMMON
1ST-STAGE
AUXILIARY
HEAT
24V POWER
24V POWER
(SOME CONNECTIONS MAY NOT APPLY. REFER TO
SPECIFIC THERMOSTAT AND INDOOR UNIT.)
REVERSING VALVE
WARNING! − ELECTRIC SHOCK HAZARD. Can cause INJU-
RY or DEATH. Unit must be grounded in accordance with
national and local codes.
NOTE − For use with copper conductors only. Refer to unit
rating plate for minimum circuit ampacity and maximum over-
current protection size.
FIGURE 13
