Lennox ML14XC1 Series Manual page 21

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 below.
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:
Yellow to Y1
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.
FIGURE 14. Typical Wiring
HIGH VOLTAGE
FIELD WIRING
LOW VOLTAGE
FIELD WIRING
GROUND
FACTORY
WIRING
HIGH VOLTAGE
CONNECTIONS
(CONTACTOR)
THERMOSTAT INDOOR UNIT
POWER
R
R
HEAT
W1 W
COOLING
Y
Y
INDOOR
BLOWER
G G
COMMON
C C
Page 21
CAPACITOR
THREE PHASE
WIRE
NUTS
HIGH VOLTAGE
FLEXIBLE CONDUIT
AND WIRE TIE
OUTDOOR
UNIT
B
Y1
CONTROL
WIRING
C
A
GROMMET