AAON V3-E - Manual (Page 15)

15
4. Start-Up
General
ONLY QUALIFIED, AUTHORIZED PERSONNEL
SHOULD POWER ON, OR START-UP THIS
EQUIPMENT.
The use of common sense, and good practice in the
installation, and start-up of equipment will prevent
many potential problems with the system in the future.
Before starting up the equipment, building construction
should be complete, and start-up personnel should:
− Have a working knowledge of general HVAC
and mechanical commissioning procedures
and practices;
− Be familiar with unit functions, features,
optional unit accessories, and all control
sequences;
− Have appropriate literature on hand for
consultation.
Before the structure is occupied, the installation,
and/or start-up personnel must take three essential
steps:
1. Check Out
2. Start-Up
3. Commissioning
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, and
glued.
9. Check local codes for any special provisions.
10. Replace, and/or close all access panels.
11. Ensure that return, and/or supply dampers in
ductwork are open.
12. Check electrical phasing to ensure fan rotates
in proper direction.
Procedures
Install gauges, voltmeter, and ammeter before start-
up. Observe refrigerant pressures during initial
operation. Note, and determine the cause of any
excessive sound, or vibration. Follow start-up
procedures outlined below to start each piece of
equipment.
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.
Failure to adhere to the following start-up
procedures will void all manufacturer’s warranties.
NOTE
Completed factory test sheets are in the equipment
literature packet shipped inside the unit. Factory
run-test readings recorded on the test sheets for
may be helpful to reference during start-up.
NOTE
Equipment power should be on at least 24 hours
before start-up to allow the crankcase heater to
boil off refrigerant that may have accumulated in
the compressor oil.
CAUTION
Equipment operation during construction is not
recommended. Construction site pollution can
affect unit operation, and seriously degrade
performance. Operation during construction will
void all manufacturer’s warranties.
CAUTION