Mega 115V Engineering Manual

ManualsBrandsLG ManualsHVAC Supplies9,000 BTU 20 SEER Inverter Heat Pump - Mega Series Value Line, 115V (Bundle)

Table Of Contents

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PERFORMANCE DATA | 59

Performance Data

EQUIPMENT SELECTION PROCEDURE

Correction Factors

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.

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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 (%)

LS090HEV2

LS120HEV2

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

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

LS180HEV2

LS240HEV2

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 35: 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 (%)

LS090HXV2

LS120HXV2

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

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