Table of Contents
Advertisement
ELECTRICAL WIRING
WARNING:
ELECTRICAL SHOCK, FIRE OR
EXPLOSION HAZARD
Failure to follow safety warnings exactly could
result in serious injury or property damage.
Improper servicing could result in dangerous
operation, serious injury, death or property
damage.
• Before servicing, disconnect all electrical
power to furnace.
• When servicing controls, label all wires prior
to disconnecting. Reconnect wires correctly.
• Verify proper operation after servicing."
AVERTISSEMENT:
RISQUE DE CHOC ÉLECTRIQUE,
D'INCENDIE OU D'EXPLOSION
Le non-respect des avertissements de
sécurité pourrait entraîner un fonctionnement
dangereux de l'appareil, des blessures graves,
la mort ou des dommages matériels.
Un entretein incorrect pourrait entraîner un
fonctionnement dangereux de l'appareil, des
blessures graves, la mort ou des dommages
matériels
• Couper toute alimentation électrique au
générateur d'air chaud avant de prodéder
aux travaux d'entretein.
• Au moment de l'entretien des commandes,
étiquetez tous les fils avant de les débrancher.
S'assurer de les raccorder correctement.
• S'assurer que l'appareil fonctionne
adéquatement aprés l'entretien.
• Electrical connections must be in compliance with all
applicable local codes with the current revision of the
National Electric Code (ANSI/NFPA 70).
• For Canadian installations the electrical connections
and grounding shall comply with the current Canadian
Electrical Code (CSA C22.1 and/or local codes).
IMPORTANT NOTE: If replacing any of the original
wires supplied with the furnace, the replacement
wire must be copper wiring having the same guage,
voltage, and temperature rating.
Pre-Electrical Checklist
√ Verify the voltage, frequency, and phase of the supply
source match the specifications on the unit rating plate.
√ Verify that the service provided by the utility is sufficient
to handle the additional load imposed by this equipment.
See Table 16 (page 31) (or the unit rating label) for
proper high voltage wiring requirements.
√ Verify factory wiring is in accordance with the unit wiring
diagram (Figure 12, page 32). Make sure the connections
didn't loosen during shipping or installation.
Grounding
WARNING:
The unit cabinet must have an uninterrupted or
unbroken electrical ground to minimize personal
injury if an electrical fault should occur. Do not
use gas piping as an electrical ground!
This unit must be electrically grounded in accordance with
local codes or, in the absence of local codes, with the
National Electrical Code (ANSI/NFPA 70) or the CSA C22.1
Electrical Code. Grounding of the unit is accomplished
by using the grounding lug provided in the control box.
Line Voltage
• The line voltage to the unit should be supplied from a
dedicated branch circuit containing the correct fuse or
circuit breaker for the unit.
• An electrical disconnect must be located within sight
of and readily accessible to the unit. This switch shall
be capable of electrically de-energizing the outdoor unit.
See unit data label for proper incoming field wiring. Any
other wiring methods must be acceptable to authority
having jurisdiction.
• Use only copper wire for the line voltage power supply
to this unit (Table 17, page 31). Use proper code agency
listed conduit and a conduit connector for connecting
the supply wires to the unit. Use of rain tight conduit is
recommended.
• Provide power supply for the unit in accordance with
the unit wiring diagram and the unit rating plate.
• Overcurrent protection must be provided at the branch
circuit distribution panel and sized as shown on the unit
rating label and according to applicable local codes. See
Table 16 (page 31) or the unit rating plate for minimum
circuit ampacity and maximum overcurrent protection
limits.
• A wiring diagram is located on the inside cover of the
control access panel of the outdoor unit. The installer
should become familiar with the wiring diagram before
making any electrical connections to the outdoor unit.
See Figure 12 (page 32).
• Units are shipped from the factory wired for 240 volt
transformer operation. For 208V operation, remove the
lead from the transformer terminal marked 240V and
connect it to the terminal marked 208V.
• Connect the line-voltage leads to the terminals on the
contactor inside the control compartment.
9
Advertisement
Table of Contents
