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LG MULTI F LMU243HV User Manual

LG MULTI F LMU243HV
158 pages
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MULTI
F
MAX
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

Table of Contents

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LG MULTI F LMU243HV Specifications

General IconGeneral
BrandLG
ModelMULTI F LMU243HV
CategoryAir Conditioner
LanguageEnglish

Summary

Safety Instructions

General Installation Safety

Covers crucial safety warnings for installing units and handling components.

Wiring Safety Instructions

Details electrical safety precautions and guidelines for wiring connections.

Operation Safety Instructions

Outlines safety measures for operating and maintaining the air conditioning system.

Placement Considerations

Refrigerant System Engineering

Pipe Size Substitutions and Components

Details rules against pipe size changes and in-line refrigeration components.

Flaring and Brazing Procedures

Flaring Procedure

Guides on performing correct flaring for refrigerant pipe connections.

Brazing Procedure

Details the process and precautions for brazing refrigerant pipe joints.

Electrical

Location/Accessing Power and Communication Connections

Guides on accessing and connecting power and communication cables.

Power Wiring/Communication Cable Connections

Details best practices for terminating power and communication cables.

Final Installation Procedures

Triple Leak / Pressure Test

Details the procedure for performing a triple leak and pressure test on the system.

Deep Evacuation Procedure

Explains how to perform deep evacuation of the refrigerant piping system.

Triple Evacuation Procedure

Outlines the triple evacuation procedure for Multi F MAX systems.

Refrigerant Charge Calculation

Provides formulas and tables for calculating additional refrigerant charge.

Cautions for Refrigerant Leaks

Discusses refrigerant safety, concentration limits, and leak detection.

Test Run Procedure

Guides on performing a test run to evaluate system performance after installation.

Error Code Tables

Troubleshooting Using Error Codes

Introduces error codes for diagnosing unit failures.

Multi F Refrigerant Charge Worksheet

Multi F Outdoor Unit Additional Refrigerant Charge Formula

Provides formula for calculating additional refrigerant needed for Multi F systems.

Multi F MAX Refrigerant Charge Worksheet

Multi F MAX Outdoor Unit Additional Refrigerant Charge Formula

Provides formula for calculating additional refrigerant needed for Multi F MAX systems.

Safety Precautions

General Installation Safety Precautions

Important safety instructions to prevent injury and property damage during installation.

Operation Safety Precautions

Safety guidelines to follow during the operation of the air conditioner.

Installation of Indoor, Outdoor Unit

Select the Best Location for Indoor Units

Criteria for selecting the optimal installation location for indoor units.

Outdoor Unit Location Selection

Guidelines for choosing the best placement for outdoor units.

Air Purging and Evacuation

Leakage Test Procedure

Steps for performing a leakage test on the refrigerant system.

Evacuation Procedure

Guides on how to properly evacuate the tubing and indoor unit.

Charging

Refrigerant Charging for Multiple Piping Models

Instructions for charging refrigerant for various piping configurations.

Refrigerant Charging for Distributor Type Models

Instructions for charging refrigerant for distributor type models.

Test Running

Test Run and Performance Evaluation

Steps for performing a test run and evaluating system performance.

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