LG MULTI F MAX User Manual

3
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.
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TABLE OF CONTENTS
CONTENTS
Safety Instructions ........................................................................................................................................... 4
Introduction ...................................................................................................................................................... 9
Unit Nomenclature ......................................................................................................................................... 11
General Data ................................................................................................................................................. 12
Specications ............................................................................................................................................................. 13
Typical Multi F / Multi F Max Systems ........................................................................................................................ 15
Refrigerant Piping Requirements ............................................................................................................................... 17
General Installation Guidelines ...................................................................................................................... 18
Location Selection ...................................................................................................................................................... 18
Inspection ................................................................................................................................................................... 19
Install Ceiling Cassette ............................................................................................................................................... 20
Installing Drain System ............................................................................................................................................... 22
Refrigerant Piping ....................................................................................................................................................... 23
Piping Materials and Handling .................................................................................................................................... 31
Piping Connections ........................................................................................................................................ 32
Piping Preparation ...................................................................................................................................................... 32
IDU to ODU ................................................................................................................................................................ 33
Piping Insulation ......................................................................................................................................................... 36
Electrical Wiring ............................................................................................................................................. 38
General Guidelines ..................................................................................................................................................... 38
Power Wiring Specications and Best Practices ........................................................................................................ 39
Controller Options ....................................................................................................................................................... 40
Power Wiring / Communications Cable Installation Guidelines 40
Indoor Unit Electrical Connections Procedure ............................................................................................................ 41
Decorative Grille Kit Installation .................................................................................................................................. 43
Self Diagnosis Functions ........................................................................................................................................... 44
LG SIMS - Self Diagnosis Functions ......................................................................................................................... 46
Controller Options ....................................................................................................................................................... 48
Troubleshooting ............................................................................................................................................. 51
Error Codes ............................................................................................................................................................... 51
Cautions for Refrigerant leaks ....................................................................................................................... 53
Refrigerant Leaks ....................................................................................................................................................... 53
Installation Checklist ...................................................................................................................................... 54
Pre-Commissioning Checklist ........................................................................................................................ 58
Commissioning Notes .................................................................................................................................... 62
Commissioning Checklist Exception Report .................................................................................................. 63
Multi F Refrigerant Charge Worksheet .......................................................................................................... 64
Multi F MAX Refrigerant Charge Worksheet ................................................................................................. 65

LG MULTI F MAX Specifications

General

Brand	LG
Model	MULTI F MAX
Category	Air Conditioner
Language	English