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Figure 44: Prevailing Wind
Direction.
Wind Protection
If the outdoor unit is placed on a roof, position it with the compressor
end (no coil surface) in the direction of the prevailing wind as shown
in the figure at right. In cooler climates, it may be beneficial to posi-
tion the unit in direct sunlight to assist with defrost operations.
If the outdoor unit is not placed on a roof, place it on the leeward
side of the building or in a location where the unit will not be ex-
posed to constant wind.
If placement exposes the unit to constant wind activity, construct a
wind break in front of the unit. Follow the placement guidelines set
forth in “Clearance Requirements”.
Prevailing Winds
Prevailing
Winds
Figure 45: Leeward Side of the
Building.
Prevailing Winds
Wall or Other Wind Break
Figure 46: Wind Break.
Mounting Platform
The underlying structure or foundation must be designed to support the weight of the unit. Avoid placing
the unit in a low lying area where water may accumulate.
Oceanside Installation Precautions
• Avoid installing the outdoor unit where it would
be directly exposed to ocean winds.
• Install the outdoor unit on the side of the building
opposite from direct ocean winds.
• Select a location with good drainage.
• Periodically clean dust or salt particles off of the
heat exchanger with water.
Tie-Downs and Wind Restraints
The strength of the Vertical Air Handling Unit frames is adequate to be used with field-provided wind re-
straint tie-downs. The overall tie-down configuration must be approved by a local professional engineer.
Always refer to local code when designing a wind restraint system.
If the outdoor unit must be placed in a location
where it would be subjected to direct ocean winds,
install a concrete windbreaker strong enough to
block any winds. Windbreaker height and width
must be more than 150% of the outdoor unit, and
be installed at least 27-1/2 inches away from the
outdoor unit to allow for airflow.
Ocean winds may cause corrosion, particularly
on the condenser and evaporator ns, which, in
turn could cause product malfunction or inefcient
performance.
PLACEMENT CONSIDERATIONS
Outdoor Unit
Ocean winds
Ocean winds
Ocean winds
Windbreaker
Figure 47: Oceanside Placement Using a Building as Shield, and Placement Using a
Windbreak.
Additional anti-corrosion treatment may
need to be applied to the outdoor unit at
oceanside locations.
Due to our policy of continuous product innovation, some specications may change without notication.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
74 | APPLICATION
Single Zone Vertical Air Handling Unit Engineering Manual
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