LG LC097HV4 Engineering Manual page 58

PLACEMENT CONSIDERATIONS
Outdoor Unit
Tie-Downs / Wind Restraints and Lightening Protection
The strength of the Four-Way Ceiling Cassette system outdoor unit frame is adequate
to be used with field-provided wind restraint tie-downs.
Tie-Downs / Wind Restraints
• The strength of the roof must be checked before installing the outdoor units.
• If the installation site is prone to high winds or earthquakes, when installing on the
wall or roof, securely anchor the mounting base using a field-provided tie-down con-
figuration approved by a local professional engineer.
• The overall tie-down configuration must be approved by a local professional engineer.
Always refer to local code when using a wind restraint system.
Lightening Protection
• To protect the outdoor unit from lightning, it should be placed within the specified
lightning safety zone.
Table 33: Safety Zone Specifications.
Building Height (feet)
Protection Angle (˚)
• Power cable and communication cable should be installed five (5)
feet away from lightning rod.
• A high-resistance ground system should be included to protect
against induced lightning or indirect strike.
General Mounting
Securely attach the outdoor unit to a condenser pad, base rails, or other mounting platform
that is securely anchored to the ground or building structure. The underlying structure or
foundation must be designed to support the weight of the unit, and avoid placing the outdoor
unit in a low lying area where water may accumulate.
Attaching the Outdoor Unit to the Bracket
When installing the outdoor unit on a wall or roof top, anchor the mounting base securely
using nails or wire with regard to wind and earthquake or vibration.
Refer to installation manual, and follow the applicable local code for clearance, mounting,
anchor, and vibration attenuation requirements.
• All referenced materials are to be field-supplied.
• Images are not to scale.
58 | FOUR-WAY CASSETTE
66 98 148 197
55 45 35 25
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. "LG" is a registered trademark of LG Corp.
Figure 36: Lightening Protection Diagram.
Lightning rod
If the building does not include lightning protection, the outdoor unit
may be damaged from a lightening strike. Inform the customer of
this possibility in advance.
Figure 37: Bracket Mounting.
Lightning rod
Protection Angle (25˚~55˚)
5 feet 1.5m
Safe zone
Ground