Lennox International Inc Merit Series 14ACX Units Routing High Voltage/ Ground And Control Wiring

ROUTING HIGH VOLTAGE/ GROUND AND CONTROL WIRING

SINGLE PHASE

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.

LOW VOLTAGE CONTROL WIRING

NOTE

maintain separation of field installed low and high voltage circuits.

NOTE

gauge per table above.

NOTE Do not bundle any excess 24VAC control wires inside control panel.

HIGH VOLTAGE CONNECTIONS (CONTACTOR)

GROUND

HIGH VOLTAGE FIELD WIRING

LOW VOLTAGE FIELD WIRING

FACTORY

WIRING

THERMOSTAT

B

CONTROL

WIRING

HIGH VOLTAGE

FLEXIBLE

CONDUIT

INDOOR UNIT

Install low voltage wiring from outdoor to indoor unit and from thermostat to indoor unit as illustrated.

ARun 24VAC control wires through hole with grommet and secure with provided wire tie.

BMake 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	AWG# INSULATION TYPE
LESS THAN 100’ (30 METERS)	18	TEMPERATURE RATING
MORE THAN 100’ (30 METERS)	16		35ºC MINIMUM.

R

W1

Y

G

C

POWER

HEAT

COOLING

INDOOR BLOWER

COMMON

R

W

Y

G

C

A

GROMMET AND

WIRE TIE

OUTDOOR

YELLOW UNIT

Y1

BLACK

C

Figure 15. Typical Field Wiring Diagram

Page 19

14ACX SERIES