LG MULTI V ARNU123M1A4 - User Manual

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

LG MULTI V ARNU123M1A4 Specifications

General

Brand	LG
Model	MULTI V ARNU123M1A4
Category	Air Conditioner
Language	English

Summary

SAFETY INSTRUCTIONS

Safety Symbols and Installation Warnings

Explains hazard symbols and critical installation safety precautions.

UNIT NOMENCLATURE

R410 A REFRIGERANT

R410 A Refrigerant Handling and Safety

Details R410A refrigerant properties, handling precautions, and installation requirements.

GENERAL DATA

Specifications - Ducted Indoor Units by Chassis Type

GENERAL INSTALLATION GUIDELINES

Location Selection and Site Preparation

Outlines criteria for selecting installation locations and preparing sites exposed to unconditioned air.

INSTALLATION

Ducted IDU Chassis Installation

Details installing the ducted IDU chassis, including roughing-in for ductwork and piping.

Vertical Installation for Convertible Mid Static Ducted Units (MA Chassis Only)

Vertical Conversion Kit Installation

Convertible Mid-Static Vertical Conversion Kit Installation

Convertible Mid-Static Ducted Vertical Installation Conversion Kit Wiring

Vertical Conversion Kit Wiring Procedures

General Mounting - Vertical; Horizontal Air Handler Units

Mounting Guidelines for Vertical;Horizontal Air Handlers

REFRIGERANT PIPING

Refrigerant Piping Preparation and Flare Fitting

Covers essential steps for preparing refrigerant piping and creating proper flare connections.

Refrigerant Safety and Brazing Procedures

Details refrigerant safety requirements and best practices for brazing refrigerant piping systems.

CONDENSATE PIPING

Condensate Piping Procedures and Guidelines

WIRING

General Wiring Information and Cable Separation

Power and Communication Cable Connections

Wiring Connection Procedures

Provides step-by-step instructions for connecting power and communication wiring to the indoor units.

CONTROLS SETUP

System Compatibility and DIP Switch Basics

Indoor Unit Control Configuration Methods

INSTALLATION CHECKLIST

Rough-In, Ductwork, and Piping Installation Checks

Checklist items for rough-in, ductwork, refrigerant piping support, slope, and clearances.

Electrical, Wiring, and Control System Checks

Checklist items for electrical connections, grounding, wiring separation, and controller setup.