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same size and prime with water. When connecting rigid
drain line, hold the female fi tting with a wrench to prevent
twisting. Do not over tighten! Refer to local codes and
restrictions for proper condensate disposal requirements.
See Figure 6.
Condensate
Drain
Figure 6. Condensate Drain Location
ELECTRICAL WIRING
WARNING:
Shut off all electrical power to the unit before
performing any maintenance or service on the
system. Failure to comply may result in personal
injury or death.
• Electrical connections must be in compliance with
all applicable local codes and ordinances, and 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).
Pre-Electrical Checklist:
Verify that the voltage, frequency, and phase of the
supply source match the specifi cations on the unit
rating plate.
Verify that the service provided by the utility is suffi cient
to handle the additional load imposed by this equipment.
refer to the unit wiring label for proper high and low
voltage wiring.
Verify factory wiring is in accordance with the unit wiring
diagram (Figures 12 - 17, pages 17 - 22). Inspect for
loose connections.
Phase balance on 3 phase units must always be
checked. See Unbalanced 3-Phase Supply Voltage
section (page 10).
Line Voltage
• It is recommended that the line voltage to the unit 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 fi eld
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 2, page 10). 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.
• See the unit wiring label for proper high and low voltage
wiring. Make all electrical connections in accordance
with all applicable codes and ordinances.
• 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 the unit rating plate for maximum circuit ampacity
and maximum overcurrent protection limits.
• Check all factory wiring to the wiring diagrams. Verify
none of the connections loosened during shipping or
installation.
• A wiring diagram/schematic is located on the inside
cover of the electrical box of the outdoor unit. The
installer should become familiar with the wiring
diagram/schematic before making any electrical
connections to the outdoor unit. See Figures 12 - 17.
• Provide power supply for the unit in accordance with
the unit wiring diagram, and the unit rating plate.
CAUTION:
Label all wires prior to disconnection when
servicing controls. Wiring errors can cause
improper and dangerous operation. Verify proper
operation after servicing.
• 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.
• Internally mounted circuit breakers are available as
fi eld installed options. These circuit breakers can be
used as an electrical disconnect.
• Connect the line-voltage leads to the terminals on the
contactor inside the control compartment.
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
!
9
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