Safety Instructions ........................................................................................................................................... 4

Introduction ...................................................................................................................................................... 9

Unit Nomenclature ......................................................................................................................................... 11

General Data ................................................................................................................................................. 12

Specifications ............................................................................................................................................................. 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 Specifications and Best Practices ........................................................................................................ 39

Controller Options ....................................................................................................................................................... 40

Power Wiring / Communications Cable Installation Guidelines

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

CONTENTS

Due to our policy of continuous product innovation, some specifications may change without notification.

TABLE OF CONTENTS

Table of Contents