LG ARWB80LA2 User Manual

ENGLISH
System
Outside Unit
INSTALLATION MANUAL
LG
MODELS: ARWB Series
website http://www.lgservice.com
IMPORTANT
• Please read this installation manual completely before
installing the product.
• Installation work must be performed in accordance with
the national wiring standards by authorized personnel
only.
• Please retain this installation manual for future reference
after reading it thoroughly.
R410A

LG ARWB80LA2 Specifications

General

Brand	LG
Model	ARWB80LA2
Category	Air Conditioner
Language	English

Summary

Safety Precautions

Installation Safety

Safety instructions for electrical work, grounding, circuit breakers, and professional installation.

Operation Safety

Safety guidelines for operating the unit, covering power cords, wet hands, and sharp edges.

Installation Process

Refrigerant R410A and Location Selection

Installation and Anchoring

Refrigerant Piping Preparation

Flare Connections and Torque

Refrigerant Piping Installation Cautions

Refrigerant Piping Connections

Common Pipe and Unit Connections

Guidelines for connecting common pipes and specifying diameters for 2 outdoor units.

HR Unit Installation Procedures

Water Pipe Installation

Device Protection Units

Strainer and Flow Switch Installation

Importance and installation of strainers and flow switches for system protection.

Refrigerant Piping System Design

System Layout and Length Limits

Refrigerant Pipe Diameter Sizing

Outdoor and Indoor Unit Connection Piping

Calculating Refrigerant Amount

Refrigerant Leakage Safety Regulations

Branch Pipe and Header Fittings

Leak Testing and Vacuum Procedures

Leak Test and Vacuum Steps

Method for leak testing with nitrogen and vacuuming the system.

Refrigerant Charging Method

Electrical Wiring Overview

Transmission Cable Types

Power Wiring Precautions

Main Power Supply Wiring

Transmission Cable Connections (50Hz)

1 Outside Unit Connection (50Hz)

2 Outside Unit Connections (50Hz)

3 Outside Unit Connections (50Hz)

Transmission Cable Connections (60Hz)

1 Outside Unit Connection (60Hz)

2 Outside Unit Connections (60Hz)

3 Outside Unit Connections (60Hz)

Communication Cable Connection

HR Unit PCB Setup

HR Unit Switch Settings

HR Unit Model Selection

HR Unit Valve Group Settings

HR Unit Addressing Switches

Addressing and Pipe Detection Flowcharts

Auto Addressing & Pipe Detection

Manual Pipe Detection Procedure

Dip Switch Setting Overview

Indoor Unit Auto-Addressing Process

Test Run - Water Supply System

Test Run Precautions

Abnormal Test Run Handling

Self-Diagnosis Function

Error Indicator Explanation

Error Display Codes

List of error codes and their corresponding root causes for outdoor units.

Caution For Refrigerant Leak

Refrigerant Leak Safety Procedures

How to calculate refrigerant amounts and minimum room capacity for leak safety.

Refrigerant Concentration Management