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Installing contractor must check for proper
motor rotation and check blower motor
amperage listed on the motor nameplate is
not exceeded.
Wire control signals to the unit’s low
voltage thermostat connections on the
control board, located in the controls
compartment. Consult unit wiring diagram
for more detailed instructions on control
signal wiring connections.
If any factory installed wiring must be
replaced, use a minimum 105°C type AWM
insulated conductors.
How to Connect to WH Series Disconnect
30 Amp Disconnect
1) Remove compressor panel
Electrical knock-outs are available next
to the switch to run the wire through.
2) Reach behind the Disconnect Switch,
grasp the terminal block and press down
on the button, and pull back to remove
from rotary switch.
The button to release the terminal block:
Figure 14 - Release Button
Rotation must be checked on all
MOTORS AND COMPRESSORS of
three phase units. Supply fan motors
must all be checked by a qualified
service technician at startup and any
wiring alteration must only be made
at the unit power connection.
Scroll compressors are directional
and can be damaged if rotated in the
wrong direction. Compressor rotation
must be checked for proper
operation, without using external
refrigerant pressure gauges. Often, a
compressor running in reverse
rotation will be much louder than a
norm
al compressor, and will not
develop much of a temperature
differential between the suction and
Disconnect all electrical power
sources before servicing the unit.
More than one power source may be
provided. Failure to do so may result
in injury or death from electrical
shock or entanglement in moving
parts/
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