LG AR-DR12-05A Installation And Operation Manual page 44

START UP UNIT
Pre-Start-Up Checklist
1. Remove any foreign objects that are located in the unit.
2. Check all fasteners, set-screws, and locking collars on the fans, bearings, drives, motor bases and accessories for tightness.
3. Rotate the fan wheels and energy recovery wheels by hand and ensure no parts are rubbing.
4. Verify diameter seal settings on the energy recovery wheel.
5. Filters can load up with dirt during building construction. Replace any dirty pleated filters and clean the aluminum mesh filters in the intake
hood.
6. Verify that non-motorized dampers open and close properly.
7. Check the tightness of all factory wiring connections.
8. Verify proper drain trap installation.
9. Check condensing fans for any damage or misalignment. Spin the blades and make sure they don't contact any parts and are free turning
without any resistance.
10. Look over the piping system.
11. Inspect all coils within the unit. Fins may get damaged in transit or during construction. Carefully straighten fins with a fin comb.
Electrical
1. Disconnect and lock-out all power switches.
2. Verify control wire gauge.
3. All field-mounted sensors and instruments are installed and wired.
4. Unit controls are off.
5. Electrical service matches unit voltage.
6. Electrical field wiring is complete.
7. All electrical connections are tightened.
8. Compressor and motor breakers or fuses are open (disabled).
9. Main power is wired to the disconnect.
10. Discharge air sensor is installed per wiring instructions.
11. Space temperature and humidity sensors are installed per if selected with unit.
Compressors
1. This unit contains a crankcase heater for each compressor which needs power supplied to it 24 hours prior to start-up. If start-up is sched-
uled in 24 hours, unlock the disconnect power and energize unit.
2. Compressor shipping brackets are removed if provided.
IG Furnace
1. If there is an indirect gas-fired furnace in this unit, refer to the manual provided with this unit for Pre- Start-Up information.
2. Gas piping is complete and gas lines are purged.
3. Gas venting is in place.
Hot Water/Chilled Water Coils
1. Chilled water piping system is complete.
2. Hot water piping system is complete.
3. Control valves are installed, wired, and operating properly.
4. Water coils are balanced to design GPM.
5. Water system is free of air.
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