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LG AR-DR22-17A Commercial Rooftop Monthly Yearly

The LG AR-DR22-17A Commercial Rooftop Monthly Yearly eansures that you easily identify components that should be repaired or replaced. Prior to installing the unit and system components, inspect the unit assembly to make sure it is in working order.
MaintainX
04/26/2021

LG AR-DR22-17A Commercial Rooftop Monthly Yearly

71 steps
The LG AR-DR22-17A Commercial Rooftop Monthly Yearly eansures that you easily identify components that should be repaired or replaced. Prior to installing the unit and system components, inspect the unit assembly to make sure it is in working order.
  • Removing from Storage

  • As units are removed from storage to be installed in their final location, they should be protected and maintained in a similar fashion until the equipment goes into operation.

  • Prior to installing the unit and system components, inspect the unit assembly to make sure it is in working order.

  • Check

  • WARNING!

  • Note!

  • Cooling Options

  • Units have the following cooling options available:

  • Units with packaged DX are shipped fully charged with refrigerant and are ready for operation upon arrival.

  • Heating Options

  • There are three different optional heat sources that can be ordered for this unit:

  • Airflow Arrangement

  • Safety Listing

  • Blower

  • Coils

  • Compressors

  • Dampers

  • Optional Barometric Relief Damper

  • Electric Heater

  • Filters

  • Indirect Gas-Fired Furnace

  • Packaged DX System

  • Vestibule

  • Handling Concerns for Units with Packaged DX

  • WARNING! Units having packaged DX have a system that is pressurized with refrigerant and if it is damaged, the refrigerant could leak into the atmosphere or cause bodily harm due to the extreme cold nature of expanding refrigerant. Use protective equipmen

  • Before Lifting - Vestibule

  • Before Lifting - Field Power Access

  • Lifting

  • Figure 5: DOAS Unit: Spreader Bar.

  • NOTE: Spreader bars are required to prevent damage to the cabinet. Failure to follow proper instructions could result in property damage.

  • Roof Curb Mounting

  • Factory-Supplied Roof Curbs

  • Install Curb

  • Install Ductwork

  • Set the Unit

  • Install Vestibule

  • Optional Piping Vestibule

  • Ductwork Configurations

  • NOTE: Downblast Discharge Ductwork - whenever downblast discharge is used, the ductwork directly beneath the unit must be connected with either a “T” or an “L” configuration and the area directly beneath the heat source must not have any openings such as

  • Figure 6: Typical Unit with Condensing Section and Factory Supplied Curb Kit.

  • Figure 7: Typical Unit with Piping Vestibule and Factory Supplied Curb Kit.

  • Rail Mounting and Layout

  • Recommended Electrical and Gas Supply Entry Locations

  • Figure 10: Recommended Gas and Electric Supply Entry Locations

  • Alternate Supply Entry Locations

  • WARNING! Never drill holes in the roof of the unit! There is high voltage wiring located between the inner and outer roof panels. Damage to the wiring could cause severe bodily harm or death.

  • Figure 9: Typical Unit Installed on Field Supplied Rails

  • WARNING! Improper installation, adjustment, service, maintenance, or alteration can cause personal injury, or loss of life. Installation, startup, and service must be performed by a qualified installer, service agency, or gas supplier.

  • NOTE: Improper installation, adjustment, service, maintenance, or alteration can cause property damage. Installation, startup, and service must be performed by a qualified installer, service agency, or gas supplier.

  • Outdoor Air Intake Hood

  • Each VPR, VPRC/P, VPRE, and VPRX series ventilator comes with a factory-supplied outdoor air intake hood that must be assembled prior to startup. The outdoor air intake hood is available in two options:

  • The individual parts of the intake hood are located between the outdoor air intake damper and the intake hood top piece (item #6 for models 110/210/310; items #7 and #8 for models 350/352), which is secured flush with the end of the unit during shipment.

  • Tools Needed

Source: LG

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