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Wiring
4.0 INSTALLATION
4.10 Power Wiring
Voltage
Operating Voltage Range at
Maximum Load Conditions
208/230
197–253
it is important that proper electrical power is available
at the heat pump power terminal block. The acceptable
operating voltage range is shown below.
VOLTAGE RANGES (60 HZ)
Install a branch circuit disconnect within sight of the
unit and of adequate size to handle the minimum circuit
ampacity (MCA) current (see “Electrical Data” in Section
3.2).
Field wiring must comply with the National Electric Code
(C.E.C. in Canada) and any applicable local code.
Power wiring must be run in a rain-tight conduit. Conduit
must be attached to the hole in the bottom of the control
box.
Connect power wiring to line-voltage lugs on the terminal
block located in the outdoor heat pump unit electrical
box. (See wiring diagram attached to unit access panel.)
Check all electrical connections, including factory wiring
within the unit and make sure all connections are tight.
DO NOT connect aluminum field wire to the line
voltage terminal block.
- Cable tie provision for field wire just below terminal
block.
- Conduit entry location and Method of fixing on plate.
4.11 Grounding
WARNING: The unit must be permanently grounded. Failure to do so can cause electrical shock
resulting in severe personal injury or death.
A ground lug is provided near the line-voltage power entrance for a ground wire.
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