Field Control Wiring - Lennox CBX32MV Installation Instructions Manual

Seal the unit so that warm air is not allowed into the
cabinet. Warm air introduces moisture, which results in
water blow−off problems. This is especially important when
the unit is installed in an unconditioned area.
Make sure the liquid line and suction line entry points are
sealed with either the provided flexible elastomeric thermal
insulation, or field provided material (e.g. Armaflex,
Permagum or equivalent). Any of the previously mention
materials may be used to seal around the main and
auxiliary drains, and around open areas of electrical inlets.

Field Control Wiring

WARNING
Electric Shock Hazard.
Can cause injury or death.
Foil-faced insulation has conductive characteristics sim-
ilar to metal. Be sure there are no electrical connections
within a ½" of the insulation. If the foil-faced insulation
comes in contact with electrical voltage, the foil could
provide a path for current to pass through to the outer
metal cabinet. While the current produced may not be
enough to trip existing electrical safety devices (e.g.
fuses or circuit breakers), the current can be enough to
cause an electric shock hazard that could cause person-
al injury or death.
Wiring must conform to the current National Electric Code
ANSI/NFPA No. 70, or Canadian Electric Code Part I, CSA
Standard C22.1, and local building codes. Refer to
following wiring diagrams. See unit nameplate for
minimum circuit ampacity and maximum over−current
protection size.
Run 24V Class II wiring only through specified low volt-
age opening. Run line voltage wiring only through speci-
fied high voltage opening. Do not combine voltage in one
opening.
Select the proper supply circuit conductors in
accordance with tables 310−16 and 310−17 in the
National Electric Code, ANSI/NFPA No. 70 or tables 1
through 4 in the Canadian Electric Code, Part I, CSA
Standard C22.1.
Separate openings have been provided for 24V low
voltage and line voltage. Refer to the dimension illustration
of specific location.
USE COPPER CONDUCTORS ONLY.
WIRING CONNECTIONS
1. Install line voltage power supply to unit from a properly
circuit breaker.
2. Ground unit at unit disconnect switch or to an earth
ground.
NOTE Connect conduit to the unit using a proper
conduit fitting. Units are approved for use only with
copper conductors. A complete unit wiring diagram is
located on the back side of the unit's access panel.
3. Install low voltage wiring from outdoor to indoor unit
and from thermostat to indoor unit.
NOTE For proper voltages, select control wiring gauge
per the charts on page 19.
Page 13
WARNING
CAUTION
CBX32MV SERIES