AAON M2-036 - Manual (Page 68)

68
Startup
(See back of the manual for startup form)
During startup, it is necessary to perform
routine checks on the performance of the
unit. This includes checking of the air flow,
the air filters, condenser water flow and
refrigerant charge.
Filters
Units are shipped with the selected filters
installed. If filters have been removed
during installation, open the filter access
door and re-install the correct filters with the
airflow indicator arrows pointing in the
direction of airflow.
Filters should be checked after a few days of
operation after the unit has been started up
as dust and debris from construction may
cause premature filter loading. Replace the
filters if necessary.
Check Out
Equipment should be thoroughly checked
for loose wiring, a free spinning blower
wheel, and well fitting access panels. Air
handlers should not be operated without
proper ductwork and access panels installed,
except as required during start-up and air
balancing.
1. Check all electrical connections to be
sure they are tight.
2. Open all access panels, and remove
all shipping screws, or restraints.
3. Clean out any debris that may have
been left.
4. Check belt alignment and tightness
of fan drives.
5. Check bearing locking collars and
fan wheel set screws for tightness.
6. Turn fan wheels to assure free
rotation.
7. Ensure electrical supply matches the
unit nameplate.
8. Ensure condensate lines are
connected, glued, and sloped toward
building drain.
9. Check local codes for any special
provisions.
10. Attach or close all access doors and
panels.
11. Ensure that all ductwork dampers are
open.
12. Check electrical phasing to ensure
that fan rotate in the proper direction.
Electric Heating Section Procedures
1. Perform final visual inspection.
Check all equipment, ductwork, and
piping to verify that all work is
complete and equipment is properly
installed and mounted. Improperly
installed equipment or ductwork can
affect readings.
2. Ensure there is no construction
debris in the unit.
3. Check the unit for external damage.
4. Note all accessories installed.
5. Install new filters of the proper size
and type.
6. Check all terminal blocks, fuses, fuse
blocks, and contactors for
correctness.
Improper installation, adjustment,
alteration, service or maintenance
can cause property damage,
personal injury or loss of life.
Installation and service must be
performed by a trained, qualified
installer. A copy of this IOM should
be kept with the unit.
WARNING