LG LMU540HV Käyttöohje

LG Ilmastointi LMU540HV

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MULTI FMAX

MULTI F

OUTDOOR UNIT

INSTALLATION MANUAL

Multi-Zone Heat Pump Systems

1.5 to 5 Tons

Dual and Tri-Zone

Multi F

Quad-Zone

Multi F

Eight-Zone

Multi F MAX

For continual product development, LG Electronics U.S.A., Inc. reserves the right to change specifications without notice.

PROPRIETARY DATA NOTICE

For more technical materials such as submittals, catalogs, engineering,

owner’s, best practices, building ventilation guide, and service manuals,

visit www.lghvac.com.

Do not throw away, destroy, or lose this manual.

Please read carefully and store in a safe place for future reference.

Content familiarity is required for proper installation.

The instructions included in this manual must be followed to prevent product malfunction, property damage, injury, or death to the user or

other people. Incorrect operation due to ignoring any instructions will cause harm or damage. The level of seriousness is classified by the

symbols described by the summary list of safety precautions on page 4.

This document, as well as all reports, illustrations, data, information,

and other materials are the property of LG Electronics U.S.A., Inc., and are

disclosed by LG Electronics U.S.A., Inc. only in confidence.

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

MULTI FMAX

MULTI

WITH

TABLE OF CONTENTS

Safety Instructions ...................................................................................................................................................................................................... 4-7

Nomenclature .................................................................................................................................................................................................................. 8

General Data .............................................................................................................................................................................................................. 9-18

Installation .................................................................................................................................................................................................................... 19-

Transporting / Lifting ................................................................................................................................................................................................... 19

Placement Considerations ..................................................................................................................................................................................... 20-29

Mounting / Anchoring ............................................................................................................................................................................................. 30-32

General Refrigerant Piping System Information .................................................................................................................................................. 33-47

LG Air Conditioner Technical Solution (LATS) ....................................................................................................................................................... 33-34

Refrigerant Safety Standards / Device

Connection Limitations .......................................................................................................................................................................................... 35-36

Selecting Copper Piping ............................................................................................................................................................................................. 37

Copper Expansion and Contraction ...................................................................................................................................................................... 38-40

Piping Handling .......................................................................................................................................................................................................... 41

Refrigerant System Engineering ............................................................................................................................................................................ 42-45

Flaring and Brazing Procedures ............................................................................................................................................................................ 46-47

Refrigerant Piping System Installation ................................................................................................................................................................. 48-56

Refrigerant Piping Insulation ................................................................................................................................................................................. 57-59

Electrical System Installation ................................................................................................................................................................................. 60-75

General Information .................................................................................................................................................................................................... 60

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Final Installation Procedures ................................................................................................................................................................................. 76-90

Triple Leak / Pressure Test .................................................................................................................................................................................... 76-77

Deep Evacuation Test ............................................................................................................................................................................................ 77-78

Triple Evacuation Test............................................................................................................................................................................................ 78-79

Refrigerant Charge ................................................................................................................................................................................................ 80-82

Cautions for Refrigerant Leaks .............................................................................................................................................................................. 83-84

Test Run ..................................................................................................................................................................................................................... 85

DIP Switch Settings for Optional Modes ................................................................................................................................................................ 86-90

Error Codes .............................................................................................................................................................................................................. 91-92

LG Monitoring View (LGMV) Diagnostic Software ............................................................................................................................................... 93-94

LG Smart Inverter Monitoring System (SIMS) ....................................................................................................................................................... 95-96

Maintenance Recommendations ................................................................................................................................................................................ 97

Installation Checklists and Worksheets .............................................................................................................................................................. 98-103