AAON ProFit WV Series, Installation Operation & Maintenance

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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.
Thermostat Control Wiring
If a thermostat is used for unit control, locate
it on an inside wall 4-5 feet above the floor
where it will not be subjected to drafts, sun
exposure, or heat from electrical fixtures or
appliances. Control wiring must deliver
adequate voltage to components to assure
proper operation. Control voltage returning
from controller circuit must be a minimum of
21 VAC. To assure proper wiring use the
following chart to determine the allowable
wiring distances.
Table 5 - Control Wiring
Wire Size
(Stranded) - Copper
Conductors Only
Total Wire Distance
Allowable
20 AWG 200 ft
18 AWG 350 ft
16 AWG 500 ft
14 AWG 750 ft
12 AWG 1250 ft
Total Wire Distance Allowable =
(Quantity of Control Wires) x
(Control Wire Distance)
Take the total wire distance allowable and
divide by the number of wires to be
connected. This indicates the distance
allowable for that size wire. The wiring to the
unit must not exceed the total wire distance
allowable. If the voltage at the connectors is
less than 21 VAC, isolation relays must be
installed. If under external control 21 VAC
must be field verified.
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
normal compressor, and will not
develop much of a temperature
differential between the suction and
discharge lines.
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/
CAUTION
CAUTION
WARNING