LG AR-DR12-05A Installation And Operation Manual page 21

Additional Clearances for Packaged DX Units
Packaged DX units require additional clearance because they must have unrestricted air movement around the condenser coil and condens-
er fans. Hot air is being discharged from the condenser fans during operation. Enough clearance must be provided to avoid recirculation or
coil starvation. When equipped with condenser coils, the unit should never be placed under an overhang or inside a building. A minimum of
48 inches above the condenser fans is acceptable, but unobstructed is strongly recommended.
End view of rooftop unit with Packaged DX
Figure 4: DOAS Packaged DX Unit: End view of rooftop unit
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 equipment
such as gloves and safety glasses to minimize or prevent injury in case of a system leak during installation.
Exposure to high concentration levels of refrigerant gas may lead to illness or death.
Before Lifting - Vestibule
Determine whether or not the unit has a vestibule that must be field-attached to the side of the unit. Vestibules are shipped assembled but
detached from the unit.
They have lifting lugs on them so they can also be lifted by crane, but the installed location of the unit may make it preferable to install the
vestibule on the unit prior to lifting.
Before Lifting - Field Power Access
Determine where high voltage and low voltage wiring is to be brought into the cabinet. If wiring is to be brought into the cabinet through the
floor, see Alternate Supply Entry Locations in this manual. If unit is to be installed on a roof, cut access openings in the roof deck as needed.
Due to our policy of continuous product innovation, some specifications may change without notification.
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INSTALLATION
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