Table of Contents
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INSTALLATION MANUAL
AIR
CONDITIONER
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.
Original instruction
[Representative] LG Electronics Inc. EU Representative : LG Electronics European Shared Service Center B.V.
Krijgsman 1, 1186 DM Amstelveen, The Netherlands
[Manufacturer] LG Electronics Inc. Changwon 2nd factory 84, Wanam-ro, Seongsan-gu, Changwon-si,
Gyeongsangnam-do, KOREA
For more information, Refer to the CD or LG Web site (www.lg.com).
P/NO : MFL67221416
www.lg.com
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Table of Contents
Related Manuals for LG Multi V IV ARUB160LTE4
Summarization of Contents
IMPORTANT SAFETY INSTRUCTIONS
General Safety Warnings and Cautions
General warnings about hazards and potential injuries, and cautions for minor issues.
Installation Safety Precautions
Safety warnings and precautions for the installation process.
Operation Safety Precautions
Safety guidelines for operating the air conditioner properly.
TIPS FOR SAVING ENERGY
For your records
Section to record purchase details for warranty purposes.
INSTALLATION PROCESS
Refrigerant Handling and Safety
Information about R410A refrigerant properties and installation considerations.
INSTALLATION SPACE
Lifting and Handling Method
Instructions and precautions for safely lifting and moving the unit.
INSTALLATION
Piping Preparation and Installation
Steps for preparing and installing refrigerant piping.
INSTALLATION SPACE
Individual Installation Clearances
Specifies installation clearances for different unit configurations.
Winter Installation Precautions
Precautions for installation in areas with snow or cold weather.
Refrigerant Piping and Valve Operation
Flare Shape and Tightening Torque
Proper techniques and torque specifications for flare connections.
Refrigerant Pipe Insulation
Guidelines for insulating refrigerant pipes to prevent condensation.
REFRIGERANT PIPING INSTALLATION
Precautions on Pipe Connection and Valve Operation
Key considerations for connecting pipes and operating valves.
Nitrogen Substitution Method
Procedure for using nitrogen gas during welding to prevent oxidation.
Refrigerant Pipe Installation Details
Type of HR Unit
Information on different HR unit models based on the number of connectable indoor units.
Installation Procedure for HR unit
Steps for installing the HR unit, including hanging and leveling.
Installation of Zoning Control
Branch Piping Sets
Details on recommended branch piping sets for system configuration.
PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT
Method of drawing out pipes on the front side
Instructions for routing pipes from the front of the unit.
Method of drawing out pipes on the bottom side
Instructions for routing pipes from the bottom of the unit.
Refrigerant Piping System
Refrigerant Pipe Diameter from Branch to Branch
Tables specifying pipe diameters for different system configurations.
Pipe Length and Height Difference Restrictions
Guidelines on maximum pipe lengths and height differences.
Outdoor Unit Connection
Indoor Unit Connection
Pipe diameter specifications for connecting indoor units to branches.
Pipe Connection Method/Precautions for Series Connections between Outdoor Units
Pipe Connection Between Outdoor Units (General Case)
General methods for connecting outdoor units in series.
Examples of Wrong Pipe Connections
Illustrates incorrect pipe connection methods and potential issues.
The Amount of Refrigerant
Refrigerant Charging
Procedures and warnings for charging refrigerant into the system.
Thermal Insulation of Refrigerant Piping
Vacuum Mode
Explanation of the vacuum mode function and its setting methods.
ELECTRICAL WIRING
General Wiring Precautions
General precautions for electrical wiring installation.
Critical Electrical Warnings
Critical warnings for electrical work, including using authorized personnel.
Wiring Connection Cautions
Specific cautions for grounding and wiring connections.
Precautions when laying power wiring
Control Box and Wiring Connections
Instructions for accessing and wiring the control box.
Communication and Power Cables
Specifications and guidelines for communication and power cables.
Main Power Supply and Equipment Capacity Wiring
Electrical Wiring Warnings
Warnings about following regulations and ensuring proper cable connections.
Field Wiring
Single Outdoor Unit Wiring
Wiring diagram and instructions for a single outdoor unit configuration.
Indoor and Master Outdoor Unit Wiring
Wiring connections between indoor and master outdoor units.
Series Outdoor Unit Wiring
Wiring diagrams for series connections of outdoor units.
Checking Outdoor Unit Settings
Dip Switch Setting Verification
Procedures for checking and setting outdoor unit dip switches.
HR Unit PCB
HR Unit Setup Switch Functions
Explanation of DIP switches on the HR Unit PCB for function setup.
HR Unit Model Selection
Guide to selecting the appropriate HR unit model based on system configuration.
Valve Addressing Method (Auto/Manual)
How to set valve addressing modes (Auto or Manual).
Zoning Control Setup
Instructions for setting up zoning control for indoor units.
Automatic Addressing
Automatic Pipe Detection
Procedure for automatically detecting and setting pipe connections.
Manual Pipe Detection
Automatic Addressing Procedure
Detailed step-by-step process for the automatic addressing function.
Auto Addressing and Pipe Detection Flow Chart
Visual guide to the auto addressing and pipe detection process.
Self-Diagnosis Function
Error Indicator
Information on how error codes are displayed and interpreted.
Outdoor Unit Related Errors
Indoor Unit Related Errors
List of error codes and their causes for indoor unit malfunctions.
HR Unit Related Errors
List of error codes and their causes for HR unit malfunctions.
CAUTION FOR REFRIGERANT LEAK
Checking Procedure of Limiting Concentration
Steps to check and manage refrigerant leak concentration limits.
INSTALLATION GUIDE AT THE SEASIDE
Selecting the Location (Outdoor Unit)
Guidelines for selecting an outdoor unit location near the seaside, avoiding sea wind.
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