LG Electronics LS120HEV2 Engineering Manual

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PERFORMANCE DATA | 57

Performance Data

EQUIPMENT SELECTION PROCEDURE

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Cooling / Heating Correction Factors

For Single Zone Mega Wall Mounted systems, calculate the equivalent length of the liquid line from the outdoor unit to the indoor unit. Also,

determine the elevation difference of the indoor unit above or below the outdoor unit. Find corresponding cooling or heating capacity correc-

tion factors as shown below. Multiply the correction factors by the cooling or heating capacity obtained from the capacity tables using design

conditions. The resultant is the NET cooling or heating capacity.

Cooling and Heating Capacity Coefficient Factors.

Table 31: 0HJD&RROLQJDQG+HDWLQJ&DSDFLW\&RHI¿FLHQW)DFWRUV

Operation

Mode

Piping Length (ft.)

16.4 24.6 32.8 49.2 65.6 82.0 98.4 114.8 131.2 147.6 164.0

Rate of

Capacity

Change (%)

LS-090HEV2

LS-120HEV2

Cooling 100 100 97.7 93.0 -------

Heating 100 100 98.3 95.0 -------

LS-180HEV2

LS-240HEV2

Cooling 100 100 99.0 97.0 95.0 - - - - - -

Heating 100 100 99.2 97.6 96.0 - - - - - -

Equivalent Piping Length for Piping Components

Component Size (Inches)

Elbow (ft.)

1/4 3/8 1/2 5/8 3/4 7/8 1 1-1/8 1-1/4 1-3/8 1-1/2 1-5/8 1-3/4 2-1/8

0.5 0.6 0.7 0.8 1.2 1.3 1.5 1.6 1.8 2.0 2.1 2.3 2.5 2.8

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Altitude Correction Factor

The impact of air density must be considered on systems installed at a significant altitude above sea level, therefore, locally accepted alti-

tude correction factors using ASHRAE guidelines must be applied.

Table 33: Equivalent Piping Length for Elbows.

Operation

Mode

Piping Length (ft.)

16.4 24.6 32.8 49.2 65.6 82.0 98.4 114.8 131.2 147.6 164.0

Rate of

Capacity

Change (%)

LS-090HXV

Cooling 100 100 95.8 87.5 - - - - - - -

Heating 100 100 95.8 93.8 - - - - - - -

LS-180HXV

Cooling 100 100 95.8 87.5 - - - - - - -

Heating 100 100 95.8 93.8 - - - - - - -

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LG Electronics LS120HEV2 12,000 BTU Mega Single Zone Wall-Mount Ductless Split System

Engineering Manual - Page 57