AAON CC-063 - Manual (Page 15)

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Wire control signals to the unit’s low
voltage terminal block located in the
controls compartment.
If any factory installed wiring must be
replaced, use a minimum 105°C type AWM
insulated conductors.
Thermostat
If a thermostat is used for unit control,
thermostat should be located 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.
Follow
thermostat manufacturer’s
instructions for general installation
procedure.
Thermostat control wiring size must be large
enough to prevent excess voltage drop and
ensure proper operation.
All external devices must be powered via a
separate external power supply.
Refrigerant Piping
(See back of the manual for refrigerant
piping diagrams.)
General
Piping from the condensing unit to the air
handler is the responsibility of the installing
contractor.
Use only clean type “ACR” copper tubing
that has been joined with high temperature
brazing alloy.
The pipe or line sizes must be selected to
meet the actual installation conditions and
not simply based on the connection sizes at
the condensing unit or air handler.
All CC Series condensing units are provided
with in-line shutoff valves on both the liquid
and suction lines. These should remain
closed until the system is ready for start-up
after installation.
Piping should conform to generally accepted
practices and codes.
Care must be taken not to cross the circuits
on multiple circuit systems.
Upon completion of piping connection, the
interconnecting piping and air handler
MUST BE evacuated to 500 microns or less;
leak checked and charged with refrigerant.
Scroll compressors are directional
and will be damaged by operation in
the wrong direction. High pressure
switches on compressors have been
disconnected after factory testing.
Rotation should be checked by a
qualified service technician at startup
using suction and discharge pressure
gauges and any wiring alteration
should only be made at the unit
power connection.
CAUTION
This section is for information only
and is not intended to provide all
details required by the designer or
installer of the refrigerant piping
between
the condenser or
condensing unit and the air handling
unit. AAON, Inc. is not responsible for
interconnecting refrigerant
piping.
Consult ASHRAE Handbook –
Refrigeration and ASME Standards.
CAUTION