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LG MULTI V ARNU123NJA4

LG MULTI V ARNU123NJA4
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DUCTED INDOOR UNITS
INSTALLATION MANUAL
High Static Ducted Indoor Units
ARNU363B8A4
ARNU423B8A4
ARNU483B8A4
ARNU763B8A4
ARNU963B8A4
Low-Static Ducted Indoor Units
ARNU073L1G4
ARNU093L1G4
ARNU123L2G4
ARNU153L2G4
ARNU183L2G4
ARNU243L3G4
High Static Ducted Indoor Units
ARNU073M2A4
ARNU093M2A4
ARNU123M2A4
ARNU153M2A4
ARNU183M2A4
ARNU243M2A4
ARNU283M3A4
Mid Static Ducted Indoor Units
ARNU073M1A4
ARNU093M1A4
ARNU123M1A4
ARNU153M1A4
ARNU183M1A4
ARNU243M1A4
ARNU283M2A4
ARNU363M2A4
ARNU423M2A4
ARNU483M3A4
ARNU543M3A4
Vertical Air Handling
Indoor Units
ARNU123NJA4
ARNU183NJA4
ARNU243NJA4
ARNU303NJA4
ARNU363NJA4
ARNU423NKA4
ARNU483NKA4
ARNU543NKA4
ARNU073MAA4
ARNU093MAA4
ARNU123MAA4
ARNU153MAA4
ARNU183MAA4
ARNU243MAA4
Convertible Mid Static Ducted Indoor Units

Table of Contents

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LG MULTI V ARNU123NJA4 Specifications

General IconGeneral
BrandLG
ModelMULTI V ARNU123NJA4
CategoryAir Conditioner
LanguageEnglish

Summary

Safety Instructions

Continued Installation Safety

Further safety guidelines for installation, handling, and environmental considerations.

Wiring Safety

Critical safety warnings and guidelines for electrical wiring installations.

Operation Safety

Safety precautions during unit operation, covering electrical and mechanical hazards.

Unit Nomenclature

R410 A Refrigerant Information

Dimensions

Refrigerant Piping Diagrams

General Installation Guidelines

Location Selection Guidelines

Guidelines for selecting an appropriate and safe installation location for indoor units.

Ducted IDU Chassis Installation

Step-by-step instructions for installing the indoor unit chassis securely.

Installation Procedures

Refrigerant Piping

Piping Connections and Safety

Table of pipe connection dimensions and critical refrigerant safety guidelines.

Brazing Procedures and Safety

Essential practices and safety precautions for brazing refrigerant piping joints.

Condensate Piping

Wiring

General Information and Separating Wiring

General wiring safety and guidelines for separating power and communication cables.

Power Wiring Communication Cable Connections

Best practices for terminating power and communication cables.

Terminal Connections

Details on using JIS type screws and connecting terminals correctly.

Power Supply Wiring Specifications

Electrical power supply requirements and wiring specifications for indoor units.

ODU to IDU Communication Cable Specs

Specifications for communication cables between outdoor and indoor units.

IDU to Remote Controller Communication Cable Specs

Specifications for communication cables connecting indoor units to remote controllers.

Group Control Wiring Specifications

Wiring guidelines for multiple indoor units operating in a group control configuration.

Indoor Unit Communications Cable Connections

Procedures for connecting communication cables to the indoor unit's control box.

Connecting Power Wiring

Step-by-step guide for safely connecting power wiring to the indoor unit.

Wiring Connection Procedure

Final steps for connecting power and communication wiring, ensuring secure connections.

High-Static Ducted B8 Chassis Wiring

Wiring diagram and optional connections for the High-Static Ducted B8 Chassis.

MidHigh-Static Ducted M2 Chassis Wiring

Wiring diagram and optional connections for M2 Mid/High-Static Ducted Chassis.

MidHigh-Static Ducted M3 Chassis Wiring

Wiring diagram and optional connections for M3 Mid/High-Static Ducted Chassis.

Convertible Mid-Static Ducted MA Chassis Wiring

Wiring diagram and optional connections for the Convertible Mid-Static Ducted MA Chassis.

Mid-Static Ducted M1 Chassis Wiring

Wiring diagram and optional connections for the Mid-Static Ducted M1 Chassis.

Low-Static Ducted L1 Chassis Wiring

Wiring diagram and optional connections for the Low-Static Ducted L1 Chassis.

Low-Static Ducted L2 L3 Chassis Wiring

Wiring diagram and optional connections for the Low-Static Ducted L2/L3 Chassis.

Vertical Air Handling Unit NJ Chassis Wiring

Wiring diagram and optional connections for the Vertical Air Handling Unit NJ Chassis.

Vertical Air Handling Unit NK Chassis Wiring

Wiring diagram and optional connections for the Vertical Air Handling Unit NK Chassis.

Controls Setup

Installation Checklist

Refrigerant Piping and Condensate System Checklist

Checklist items for refrigerant piping, safety, and condensate system installation.

Electrical and Zone Controller Checklist

Checklist items for electrical connections, grounding, and zone controller wiring.

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