Table Of Contents - LG LMN078HVT Installation & Maintenance

F
MULTI
F
MULTI MAX
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 Wall-Mounted IDU Chassis .............................................................................................. 20
Refrigerant Piping ....................................................................................................................... 22
Piping Materials and Handling .................................................................................................... 30
Piping Preparation ...................................................................................................................... 31
Piping Connections ...........................................................................................................32
IDU to ODU ................................................................................................................................ 32
Piping Insulation ......................................................................................................................... 35
Drain Piping ................................................................................................................................ 37
Electrical Wiring ................................................................................................................38
Power Wiring Specifications and Best Practices ........................................................................ 39
Controller Options ....................................................................................................................... 40
Indoor Unit Electrical Connections Guidelines ........................................................................... 41
Indoor Unit Electrical Connections Procedure ............................................................................ 42
Self Diagnosis Functions ........................................................................................................... 44
LG SIMS - Self Diagnosis Functions ......................................................................................... 46
Optional Wall-Mounted Sensor and Controller ........................................................................... 48
Troubleshooting ................................................................................................................49
Error Codes ............................................................................................................................... 49
Cautions for Refrigerant leaks ..........................................................................................50
Refrigerant Leaks ....................................................................................................................... 50
Installation Checklist .........................................................................................................51
CONTENTS
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

3