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TABLE OF CONTENTS
Safety Instructions .............................................................................3-6
General Data .....................................................................................8-11
Unit Nomenclature ...............................................................................8
Parts .................................................................................................... 9
6SHFL¿FDWLRQV .................................................................................... 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 ....................................................33-43
Installation Overview ......................................................................... 33
Special Applications .......................................................................... 34
Outdoor Unit Connections ................................................................. 35
Indoor Unit Connections ...............................................................36-38
Outdoor Unit Drain Piping .................................................................. 39
Indoor Unit Drain Hose .................................................................39-41
Bundling ............................................................................................. 41
Insulation ...................................................................................... 42-43
Electrical System Installation ........................................................44-53
Safety Guidelines .............................................................................. 44
&RQQHFWLRQVDQG6SHFL¿FDWLRQV ...................................................44-48
Controller Options .............................................................................. 49
Indoor Unit Electrical Connections ...............................................50-51
Outdoor Unit Electrical Connections .............................................52-53
Final Installation Procedures ........................................................54-63
Triple Leak / Pressure Test ..........................................................54-55
Deep Evacuation Test ..................................................................55-56
Triple Evacuation Test ..................................................................56-57
Refrigerant Trim Charge ................................................................... 58
Finishing the Job .............................................................................. 58
Reattaching the Indoor Unit Bottom Cover ....................................... 59
Air Filter Disassembly and Assembly ............................................... 60
Installing Batteries, Test Run, Performance Evaluation ..................... 61
Installer Mode, Heating Only Mode ................................................... 62
Cooling Only Mode, Pump Down Procedure ..................................... 63
Troubleshooting .................................................................................. 64
LG SIMS - Self Diagnosis Functions ...........................................64-65
Error Codes .................................................................................66-67
Refrigerant Leaks .............................................................................. 68
Installation Checklist ...........................................................................69