AAON V3-E - Manual (Page 16)

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2. Ensure there is no construction debris in the
unit.
3. Check the unit for external damage.
4. Note all accessories installed.
5. Install a filter of the proper size and type.
6. Check all terminal blocks, fuses, fuse blocks,
and contactors for correctness.
7. Check all high and low voltage wiring
connections for correctness, and tightness.
8. Check unit for correct incoming voltage per the
data plate.
9. Check the security of the locking system on all
blower bearings
10. Turn the unit power on.
11. Turn the unit blower on, and check for correct
rotation.
12. If correct, take blower amp readings, and
compare to see if the amp draw is within the
safety factor area of the motor. Once correct,
turn blower off.
13. Turn on the first stage of heating
− Check amp draw of each element of
each stage
− Ensure blower started w/ electric heat
− Check for temperature rise across
heating section while all stages are on
− If temperature rise is within range, turn
all heating calls off
− Check to see that blower stops
Refrigerant (DX) Cooling Section:
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. Perform condensing unit start-up checks in
addition to these air handler checks according
to the unit manufacturer’s instructions.
3. Ensure there is no construction debris in the
unit.
4. Check the unit for external damage.
5. Note all accessories installed.
6. Install filter of the proper size and type.
7. Ensure that drain P-trap is installed.
8. Check all terminal blocks, fuses, fuse blocks,
and contactors for correctness.
9. Check all high, and low voltage wiring
connections for tightness. Check unit for
correct incoming voltage per the data plate.
10. Check the security of the locking system on all
blower bearings
11. Turn the unit power on.
12. Turn the unit blower on, and check for correct
rotation.
13. If correct, take blower amp readings, and
compare to see if the amp draw is within the
safety factor area of the motor.
14. Check, and record ambient temperature.
15. Check for Guaranteed Off Timers (GOT),
and/or Time Delay Relays (TDR).
16. Start the first stage cooling circuit, and blower
circuit.
17. After all stages of cooling have been on for at
least five minutes, record the return air
temperature, and supply air temperature.
Optional Equipment
Operation of each of the following, if equipped in the
unit, must be checked according to that item’s
manufacturer’s specifications:
− Phase and brownout monitor
− Hot gas reheat
− Hot gas bypass
Commissioning
The commissioning of an air conditioning system is the
process of achieving, verifying, and documenting the
performance of that system to meet the operational
needs of the building. This may not be a formal
process in smaller structures, such as a normal
residence, but some form of owner acceptance will
occur. Adjustments made during the commissioning
phase may include air, or water balancing, or
configuration of controls, and operational sequences.
Air Balancing
High performance systems commonly have complex
air distribution and fan systems. Unqualified personnel
should not attempt to adjust fan operation, or air
circulation, as all systems have unique operating
characteristics. Professional air balance specialists
should be employed to establish actual operating
conditions, and to configure the air delivery system for
optimal performance.
Water Balancing
A hydronic specialist with a complete working
knowledge of water systems, controls, and operation
must be employed to properly balance the entire
system. Unqualified personnel should not attempt to
manipulate temperatures, pressures, or flow rates, as
all systems have unique operating characteristics, and
improper balancing can result in undesirable noises
and operation.