Greenheck ERCH - Energy Recovery Unit with Packaged DX (468151) - Manual (Page 25)

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Energy Recovery Unit with Packaged DX
Start-Up Checklist
The unit will be in operational mode during start-up . Use necessary precautions to avoid injury . All data must be
collected while the unit is running . In order to measure volts & amps, the control center door must be open, and
the unit energized using a crescent wrench to turn the disconnect handle .
Special Tools Required
• Voltage Meter (with wire probes) • Thermometer
• Amperage Meter • Pressure Gauges
• Incline manometer or equivalent • Temperature Gauges capable of measuring pipe temperature
• Tachometer
START-UP CHECKLIST FOR UNIT
Pre-Start Up Checklist - check boxes as items are completed
o Disconnect and lock-out all power switches
o Remove any foreign objects that are located in the energy recovery unit .
o Check all fasteners, set-screws, and locking collars on the fans, bearings, drives, motor bases and
accessories for tightness .
o Rotate the fan wheels and energy recovery wheels by hand and ensure no parts are rubbing . If rubbing
occurs, refer to Start-Up section for more information .
o Check the fan belt drives for proper alignment and tension (refer to Start-Up section for more
information) .
o Filters can load up with dirt during building construction . Replace any dirty pleated filters and clean the
aluminum mesh filters in the intake hood (refer to Routine Maintenance section) .
o Verify that non-motorized dampers open and close properly .
o Check the tightness of all factory wiring connections .
o Verify control wire gauge (refer to the Electrical Connections section) .
o Verify diameter seal settings on the energy recovery wheel (refer to Start-Up section for more
information) .
o Verify proper drain trap installation (refer to Drain Trap section) .
o 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 .
o Look over the piping system . Inspect for oil at all tubing connections . Oil typically highlights a leak in
the system . If a leak is present, refer to the Maintenance section in this manual .
o Inspect all coils within the unit . Fins may get damaged in transit or during construction . Carefully
straighten fins with a fin comb .
o If there is an indirect gas-fired furnace in this unit, refer to the PVF IOM provided with this unit for __
Pre- Start-Up information .
o 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 scheduled in 24 hours, unlock the disconnect power and energize unit .
Start-Up Procedure
• Make sure Pre-Start-Up checklist is complete.
• Jumper R to G, R to Y1, and R to Y2 (if applicable) on the control board.
• Turn the disconnect on. After 3 minutes compressors will come on. Make sure all fans and compressors are
rotating the correct direction .
• Allow the unit to run until the refrigerant system stabilizes. Approximately 1-2 minutes.
• Take the following measurements while the unit is running to ensure proper operation.
WARNING!
All motor(s) / compressor(s) have been checked for rotation . If blower rotation is incorrect, wiring must be
changed at the disconnect to ensure all motor(s) / compressors are corrected .
Operation of scroll compressor(s) in this unit are directional and will be damaged if run with the wrong direction .