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7
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.
TABLE OF CONTENTS
Safety Instructions ............................................................................. 3-6
General Data ..................................................................................... 8-12
Unit Nomenclature ............................................................................... 8
Parts .................................................................................................... 9
6SHFL¿FDWLRQV ............................................................................... 10-11
Electrical ............................................................................................ 12
General Installation Guidelines ..................................................... 13-24
Outdoor Unit Location Selection ................................................... 13-15
Required Outdoor Unit Clearances ................................................... 16
Rigging and Lifting / Outdoor Unit Mounting ................................. 17-18
Indoor Unit Location Selection / Required Clearances ...................... 19
Indoor Unit Mounting ....................................................................20-24
General Refrigerant Piping System Information ......................... 25-34
Refrigerant Safety Standards ............................................................ 25
Device Connection Limitations .......................................................... 25
Selecting Field Supplied Piping ......................................................... 26
Copper Expansion and Contraction .............................................. 27-28
Piping Materials and Handling ........................................................... 29
Refrigerant System Engineering ................................................... 30-32
Flaring and Brazing Procedures ................................................... 33-34
Refrigerant Piping Connections .................................................... 35-46
Installation Overview ......................................................................... 35
Special Applications ........................................................................... 36
Outdoor Unit Connections ................................................................. 37
Indoor Unit Connections ............................................................... 38-40
Outdoor Unit Drain Piping / Indoor Unit Drain Hose ..................... 41-43
Bundling ............................................................................................. 43
Insulation ...................................................................................... 44-45
6DIHW\*XLGHOLQHV&RQQHFWLRQVDQG6SHFL¿FDWLRQV ......................... 46
Electrical System Installation ........................................................ 47-55
Safety Guidelines .............................................................................. 47
&RQQHFWLRQVDQG6SHFL¿FDWLRQV ................................................... 48-50
Controller Options .............................................................................. 51
Indoor Unit Electrical Connections ............................................... 52-53
Outdoor Unit Electrical Connections ............................................. 54-55
Final Installation Procedures ........................................................ 56-65
Triple Leak / Pressure Test ...........................................................56-57
Deep Evacuation Test ................................................................... 57-58
Triple Evacuation Test................................................................... 58-59
Refrigerant Trim Charge, Finishing the Job ....................................... 60
Reattaching the Indoor Unit Bottom Cover ........................................ 61
Air Filter Disassembly and Assembly ................................................ 62
Installing Batteries, Test Run, Performance Evaluation ..................... 63
Installer Mode, Cooling Only Mode ................................................... 64
Pump Down Procedure ..................................................................... 65
Troubleshooting ............................................................................. 66-70
LG SIMS - Self Diagnosis Functions ...........................................66-67
Error Codes .................................................................................68-69
Refrigerant Leaks .............................................................................. 70
Installation Checklist ........................................................................... 71
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