AAON F-060 - Manual (Page 28)

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The blower and motor bearings are
permanently lubricated and do not require
additional lubrication. It is recommended
that the owner have available at least one set
of replacement fuses of the size supplied
with the original equipment.
Important: Keep coils, fans and filters
clean.
Service
In the event the unit is not functioning
correctly and a service company is required,
only a company with service technicians
qualified and experienced in both heating
and air conditioning should be permitted to
service the systems in order to keep
warranties in effect. The service tech may
call the sales representative if assistance is
required.
Note: Service technician must provide the
model and serial number of the unit in all
correspondence with AAON.
To order parts from the AAON parts
store online go to www.aaonparts.com.
Refrigerant Piping
(See back of the manual for refrigerant
piping diagrams.)
General
Piping from the condensing unit to the air
handling unit 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 sizes must be selected to meet the
actual installation conditions and not simply
based on the connection sizes at the
evaporator and/or condensing unit.
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 handling unit
MUST BE evacuated to 500 microns or less;
leak checked and charged with R-410A
refrigerant.
Never flip a dirty filter to allow airflow
in the opposite direction.
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
CAUTION