Lennox ML14XC1 Series Installation And Service Procedure page 19

ROUTING HIGH VOLTAGE/ GROUND AND CONTROL WIRING
HIGH VOLTAGE / GROUND WIRES
Any excess high voltage field wiring should be trimmed and
secured away from any low voltage field wiring. To facilitate a
conduit, a cutout is located in the bottom of the control panel.
Connect conduit to the control panel using a proper conduit fitting.
CONTROL WIRING
NOTE — Wire tie provides low voltage control wire strain relief and to
maintain separation of field installed low and high voltage circuits.
NOTE — For proper voltages, select thermostat wire (control wires)
gauge per table above.
NOTE — Do not bundle any excess 24VAC control wires inside
control panel.
Install low voltage wiring from outdoor to indoor unit and from thermostat
to indoor unit as illustrated.
A Run 24VAC control wires through hole with grommet and secure with
provided wire tie.
B Make 24VAC thermostat wire connections. Locate the two wires from the
contactor and make connection using field provided wire nuts:
S
Yellow to Y1
S
Black to C (common)
WIRE RUN LENGTH
LESS THAN 100' (30 METERS)
MORE THAN 100' (30 METERS) 16
AWG# INSULATION TYPE
18 TEMPERATURE RATING
35ºC MINIMUM.
HIGH VOLTAGE
CONNECTIONS
(CONTACTOR)
GROUND
HIGH VOLTAGE
FIELD WIRING
LOW VOLTAGE
FIELD WIRING
FACTORY
WIRING
THERMOSTAT
POWER
R
HEAT
W1
COOLING
Y
INDOOR
BLOWER
G
COMMON
C
Page 19
SINGLE PHASE
B
CONTROL
WIRING
HIGH VOLTAGE
FLEXIBLE CONDUIT
INDOOR UNIT
AND WIRE TIE
R
OUTDOOR
W
UNIT
Y1
Y
G
C
C
A
GROMMET
ML14XC1 SERIES