Lennox XP14-018-230 Installation Instructions Manual page 12

3
Unit Low Voltage Wiring
CUTOUT WITH
A
THERMOSTAT INDOOR UNIT
24V POWER
R
C
COMMON
W1
1ST‐STAGE
AUXILIARY
HEAT
G
INDOOR BLOWER
O
REVERSING VALVE
Y1
COMPRESSOR
(SOME CONNECTIONS MAY NOT APPLY. REFER
TO SPECIFIC THERMOSTAT AND INDOOR UNIT.)
C
WIRE NUTS
GROMMET
24V CONTROL WIRES
B
Typical 24VAC Control Wiring Diagrams (Field Installed)
OUTDOOR UNIT
R
R
24V POWER
C C
COMMON
W1
W1
1ST‐STAGE
AUXILIARY
W2
HEAT
W3
G
O
Y1
WARNING! - ELECTRIC SHOCK HAZARD. Can cause INJURY
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.
HIGH VOLTAGE FIELD WIRING
FACTORY WIRING
LOW VOLTAGE (24V) FIELD WIRING
WIRE RUN LENGTH
LESS THAN 100' (30 METERS)
MORE THAN 100' (30 METERS)
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.
NOTE - FOR PROPER VOLTAGES, SELECT THERMOSTAT WIRE (CONTROL
WIRES) GAUGE PER TABLE ABOVE.
NOTE - WIRE TIE PROVIDES LOW VOLTAGE WIRE STRAIN RELIEF AND
MAINTAINS SEPARATION OF FIELD-INSTALLED LOW AND HIGH VOLTAGE
CIRCUITS.
NOTE - DO NOT BUNDLE ANY EXCESS 24VAC CONTROL WIRES INSIDE
CONTROL BOX.
D
TIGHTEN WIRE TIE
FIGURE 13
THERMOSTAT
R
24V POWER
C
COMMON
E
EMERGENCY
HEAT
W1
1ST‐STAGE
AUXILIARY
HEAT
G
INDOOR BLOWER
O
REVERSING VALVE
Y1
COMPRESSOR
(SOME CONNECTIONS MAY NOT APPLY. REFER TO
SPECIFIC THERMOSTAT AND INDOOR UNIT.)
FIGURE 14
Page 12
AWG# INSULATION TYPE
18 TEMPERATURE RATING
16 35ºC MINIMUM.
INDOOR UNIT OUTDOOR UNIT
R
R
24V POWER
C C
COMMON
EMERGENCY
HEAT RELAY
OUTDOOR
THERMOSTAT
W1
W1
1ST‐STAGE
AUXILIARY
W2
HEAT
W3
G
O
Y1
XP14 SERIES