LG LS243HLV3 Engineering Manual page 48

Single zone extended piping wall mounted

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Installation manual (78 pages)

Table Of Contents

Table of Contents

PLACEMENT CONSIDERATIONS

Outdoor Unit

Planning for Snow and Ice, continued.

CAUTION

When deciding on a location to place the outdoor unit, be sure to choose an area where run-off from defrost will not accumulate and freeze on

sidewalks or driveways, which will create unsafe conditions. Properly install and insulate any drain hoses to prevent the hose from freezing, cracking,

leaking, and causing unsafe conditions from frozen condensate.

Underground Refrigerant Piping

Refrigerant pipe installed underground must be routed inside a vapor

tight protective sleeve to prevent insulation deterioration and water

infiltration. Refrigerant pipe installed inside underground

casing must be continuous without any joints. Underground refriger-

ant pipe must be located at a level below the frost line.

Table 26: Utility Conduit Sizes (Inches).

Liquid Pipe

3/8 (2.0

2,5

)

1/4 (1.0)

3/8 (1-1/8)

1/2 (1-1/2)

5/8 (1-5/8)

3/4 (1-3/4)

OD pipe diameter in inches; Values in parenthesis () indicate OD of pipe with insulation jacket.

Diameter of pipe with insulation. Thickness of pipe insulation is typical. Actual required thickness will

vary based on surrounding ambient conditions and must be calculated and specified by the design

engineer.

Insulation thickness (value in parenthesis) = 3/8 inch.

Insulation thickness (value in parenthesis) = 1 inch.

Insulation thickness (value in parenthesis) = 3/4 inch.

Tie-Downs and Lightning Protection

Tie-Downs

• 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 configuration 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.

Lightning Protection

• To protect the outdoor unit from lightning, it must be placed within

the specified lightning safety zone.

Table 28:

Building Height (feet)

• Power cable and communication cable must be installed five (5) feet away from lightning rod.

• A high-resistance ground system must be included to protect against induced lightning or indirect strike.

If the building does not include lightning protection, the outdoor unit will be damaged from a lightning strike. Inform the customer of this possibility in

advance.

48 | APPLICATION GUIDELINES

Vapor Pipe

1/2 (2.0

2,5

) 5/8 (2-1/8

2,5

) 3/4 (2-1/4