AAON CB-060 - Manual (Page 14)

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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.
Units with the modulating hot gas reheat
dehumidification
feature must use a
humidistat or a thermostat with a normally
closed (NC) dehumidification option. The
following thermostats have been approved
for usage with the dehumidification feature,
Robertshaw
®
9825i2 Thermostat
Honeywell VisionPRO
®
IAQ Thermostat
AAON Mini Controller
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 CB 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 piping and vacuuming.
Piping should conform to generally accepted
practices and codes.
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.
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 is not responsible for
interconnecting
refrigerant piping.
Consult ASHRAE Handbook
–
Refrigeration and ASME Standards.
CAUTION