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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.
MULTI
F
MAX
MULTI
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WITH
TABLE OF CONTENTS
Safety Instructions ...................................................................................................................................................................................................... 4-7
Nomenclature.................................................................................................................................................................................................................. 8
General Data .............................................................................................................................................................................................................. 9-16
Installation................................................................................................................................................................................................................ 17-30
Transporting / Lifting................................................................................................................................................................................................... 17
Placement Considerations..................................................................................................................................................................................... 18-27
Mounting / Anchoring............................................................................................................................................................................................. 28-30
General Refrigerant Piping System Information .................................................................................................................................................. 31-45
LG Air Conditioner Technical Solution (LATS) ....................................................................................................................................................... 31-32
Refrigerant Safety Standards / Device
Connection Limitations .......................................................................................................................................................................................... 33-34
Selecting Copper Piping............................................................................................................................................................................................. 35
Copper Expansion and Contraction....................................................................................................................................................................... 36-38
Piping Handling .......................................................................................................................................................................................................... 39
Refrigerant System Engineering............................................................................................................................................................................ 40-43
Flaring and Brazing Procedures............................................................................................................................................................................ 44-45
Refrigerant Piping System Installation.................................................................................................................................................................. 46-54
Refrigerant Piping Insulation ................................................................................................................................................................................. 55-57
Electrical System Installation................................................................................................................................................................................. 58-71
General Information.................................................................................................................................................................................................... 58
&RQQHFWLRQVDQG6SHFL¿FDWLRQV ............................................................................................................................................................................ 59-61
Installation ............................................................................................................................................................................................................. 62-71
Final Installation Procedures ................................................................................................................................................................................. 72-88
Triple Leak / Pressure Test .................................................................................................................................................................................... 72-73
Deep Evacuation Test............................................................................................................................................................................................ 73-74
Triple Evacuation Test............................................................................................................................................................................................ 74-75
Refrigerant Charge................................................................................................................................................................................................ 76-78
Cautions for Refrigerant Leaks.............................................................................................................................................................................. 79-80
Test Run ..................................................................................................................................................................................................................... 81
DIP Switch Settings for Optional Modes................................................................................................................................................................ 82-88
Error Codes.............................................................................................................................................................................................................. 89-91
LG Monitoring View (LGMV) Diagnostic Software ............................................................................................................................................... 92-93
Maintenance Recommendations................................................................................................................................................................................. 94
Installation Checklists and Worksheets.............................................................................................................................................................. 95-100
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