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62
Single Zone Mega, Standard Eciency, and Mega 115V Wall Mounted Installation Manual
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.
FINAL INSTALLATION PROCEDURES
Refrigerant Trim Charge
The single zone system will need an additional refrigerant charge if the installed piping lengths are greater than the “piping length (no
additional refrigerant, ft.) specification” listed in the product tables. See the product sections in the engineering and installation manuals. The
additional refrigerant charge can be calculated manually using the information in the engineering and / or installation manuals, or by LATS.
1. Keep the outdoor unit service values closed while adding the trim charge to the system. See the specification tables in the front of this
installation manual for base charge, and see below for the correct additional refrigerant trim charge amounts for each system.
2. Charge through just the gas (vapor) suction Schrader port.
• Follow all guidelines when handling refrigerant.
• Never inhale or handle refrigerant directly. Doing so will cause bodily injury.
Table 22: Single Zone Mega, Standard Efciency, and Mega 115V Refrigerant Piping System Additional Refrigerant Charge.
Refrigerant Trim Charge, Finishing the Job
Model Numbers
Refrigerant Piping Length (ft.)
16.4 24.6 32.8 41.0 49.2 65.6 82.0 98.4 114.8 131.2 147.6 164.0
Mega, Standard Efficiency Models
LS090HEV2
(LSN090HEV2 / LSU090HEV2)
LS090HFV3
(LSN090HFV3 / LSU090HFV3)
Additional
Refrigerant
Charge (oz.)
0 0 1.8 3.6 5.4 - - - - - - -
LS120HEV2
(LSN120HEV2 / LSU120HEV2)
LS120HFV3
(LSN120HFV3 / LSU120HFV3)
0 0 1.8 3.6 5.4 - - - - - - -
LS180HEV2
(LSN180HEV2 / LSU180HEV2)
LS180HFV3
(LSN180HFV3 / LSU180HFV3)
0 0 2.1 4.3 6.4 10.7 - - - - - -
LS240HEV2
(LSN240HEV2 / LSU240HEV2)
LS240HFV3
(LSN240HFV3 / LSU240HFV3)
0 0 2.1 4.3 6.4 10.7 - - - - - -
Mega 115V Models
LS090HXV2
(LSN090HXV2 / LSU090HXV2)
Additional
Refrigerant
Charge (oz.)
0 0 1.8 3.6 5.4 - - - - - - -
LS120HXV2
(LSN120HXV2 / LSU120HXV2)
0 0 1.8 3.6 5.4 - - - - - - -
• Capacity is based on standard length.
• Equivalent Pipe Length = Actual Pipe Length + Number of Bends x 0.3.
• Additional Refrigerant Charge Calculation : X (g) = [ (Refrigerant Pipe Length) - (No Charge Pipe Length) ] × (Additional Refrigerant).
• There is no need to add refrigerant if equivalent pipe is less than the “piping length with no additional refrigerant” in the table above.
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