Table of Contents
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Safety Instructions ............................................................................. 3-6
General Data ..................................................................................... 8-11
Unit Nomenclature ............................................................................... 8
Parts .................................................................................................... 9
Specifications .................................................................................... 10
Electrical .............................................................................................11
General Installation Guidelines ..................................................... 12-22
Outdoor Unit Location Selection ................................................... 12-14
Required Outdoor Unit Clearances ................................................... 15
Rigging and Lifting ............................................................................. 16
Outdoor Unit Mounting ................................................................. 16-17
Required Indoor Unit Clearances ...................................................... 18
Indoor Unit Mounting .................................................................... 19-22
General Refrigerant Piping System Information ......................... 23-32
Refrigerant Safety Standards ............................................................23
Device Connection Limitations ..........................................................23
Selecting Copper Piping .................................................................... 24
Copper Expansion and Contraction .............................................. 25-26
Piping Materials and Handling ........................................................... 27
Refrigerant System Engineering ................................................... 28-30
Flaring and Brazing Procedures ................................................... 31-32
Refrigerant Piping Connections .................................................... 33-44
Installation Overview ......................................................................... 33
Special Applications .......................................................................... 34
Outdoor Unit Connections ................................................................. 35
Indoor Unit Connections ............................................................... 36-39
Outdoor Unit Drain Piping .................................................................. 40
Indoor Unit Drain Hose ................................................................. 40-42
Bundling ............................................................................................. 42
Insulation ...................................................................................... 43-44
Electrical System Installation ........................................................ 45-57
Safety Guidelines .............................................................................. 45
Connections and Specifications ................................................... 45-50
Controller Options .............................................................................. 51
Indoor Unit Electrical Connections ............................................... 52-55
Outdoor Unit Electrical Connections ............................................. 56-57
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
Final Installation Procedures ........................................................ 58-67
Triple Leak / Pressure Test .......................................................... 58-59
Deep Evacuation Test .................................................................. 59-60
Triple Evacuation Test .................................................................. 60-61
Refrigerant Trim Charge ................................................................... 62
Finishing the Job .............................................................................. 62
Reattaching the Indoor Unit Bottom Cover ....................................... 63
Air Filter Disassembly and Assembly ............................................... 64
Installing Batteries, Test Run, Performance Evaluation ..................... 65
Installer Mode, Heating Only Mode ................................................... 66
Cooling Only Mode, Pump Down Procedure ..................................... 67
Troubleshooting .................................................................................. 68
LG SIMS - Self Diagnosis Functions ........................................... 68-69
Error Codes ................................................................................. 70-71
Refrigerant Leaks .............................................................................. 72
Installation Checklist ........................................................................... 73
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