LG MULTI V 5 ARUM120LTE5 - User Manual

MFL67221448
Rev. 01_091818
INSTALLATION MANUAL
AIR
CONDITIONER
www.lg.com
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.
For Heat Pump / Heat Recovery system
Original instruction
Copyright © 2018 LG Electronics Inc. All Rights Reserved.
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LG MULTI V 5 ARUM120LTE5 Specifications

General

Brand	LG
Model	MULTI V 5 ARUM120LTE5
Category	Air Conditioner
Language	English

Summary

IMPORTANT SAFETY INSTRUCTIONS

Installation Safety

Safety precautions for installation and repair by qualified personnel.

OPERATION

INSTALLATION PROCESS

Select the Best Location

Criteria for choosing an optimal installation site for the outdoor unit.

INSTALLATION SPACE

Lifting Method

Foundation for Installation

Preparation of Piping

Flaring Work

Instructions on how to perform flaring work correctly on pipes.

REFRIGERANT PIPING INSTALLATION

Precautions on Pipe connection Valve operation

Key safety and procedural points for connecting refrigerant pipes and valves.

Connection of Outdoor units

PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT

Preparation Work

Pipe Drawing Out during Single Series connection

Refrigerant piping system

Refrigerant pipe diameter from branch to branch (B,C,D)

Vacuum Mode

Vacuum mode setting method

Instructions for setting the vacuum mode using DIP switches and buttons.

Leak Test and Vacuum drying

Leak test

Procedure for testing the system for refrigerant leaks using nitrogen gas.

Vacuum

Detailed steps for vacuum drying the system using a vacuum pump.

Refrigerant charging

For Heat Pump System Installation

For Heat Recovery System Installation

ELECTRICAL WIRING

Caution

Precautions when laying power wiring

Wiring of main power supply and equipment capacity

Ground wire

Specific requirements and methods for grounding the system components.

Point for attention regarding quality of the public electric power supply

Field Wiring

Checking the setting of outdoor units

Checking according to DIP switch setting

How to check and configure outdoor unit settings using DIP switches.

Automatic Addressing

The address of indoor units would be set by Automatic Addressing

Procedure for automatically assigning addresses to indoor units.

Automatic pipe detection

Manual pipe detection

Step-by-step guide for manually detecting pipe connections.

Flow chart of auto pipe detection process

Visual representation of the automatic pipe detection procedure.

Self-Diagnosis Function

Error Indicator

Explanation of error codes displayed on units and control boards.

INSTALLATION GUIDE AT THE SEASIDE

Selecting the location (Outdoor Unit)