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LG ARUB115BT2 - User Manual

LG ARUB115BT2
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System
Heat Recovery Outdoor Unit
INSTALLATION MANUAL
LG
MODELS: ARUB 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
ENGLISH FRANÇAIS ESPAÑOL

Table of Contents

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Summary

Safety Precautions

Warning, Caution, and Symbol Meanings

Explains hazard symbols and their implications for safety.

Electrical Installation Safety

Ensures electrical safety through proper grounding and dedicated circuits.

Unit Handling and Environmental Safety

Precautions for unit handling, environmental hazards, and device settings.

Refrigerant and Gas Leak Safety

Safety measures for gas leaks, ventilation, and correct refrigerant handling.

Operational and Handling Safety

Guidelines for safe operation, handling, and preventing injuries.

Installation Environment Safety

Ensures safe installation by considering environment, noise, and wiring.

Location-Specific Safety

Safety advice for specific locations and environmental factors like sea wind.

Secure Connections and Transportation Safety

Ensures secure installation, safe transport, and proper disposal of packaging materials.

Pre-Operation Power Management

Importance of powering on the unit 6 hours before operation for crankcase heating.

Operation and Maintenance Safety Precautions

Safety measures during operation, maintenance, and handling of components.

Installation Process

Planning, Unit Installation, and Piping

Covers planning, unit installation, and refrigerant piping procedures.

Electrical Work, Testing, and Handover

Details electrical work, testing phases, and final customer handover.

Outdoor Unit Location Selection

Guidelines for selecting an optimal location for the outdoor unit, considering environmental factors.

Seaside Installation Considerations

Specific advice for installing near the sea, including windbreaks and drainage.

Select the Best Location

R410 A Refrigerant Information

Information and cautions regarding the use of R410A refrigerant.

Outdoor Unit Installation Site Requirements

Criteria for selecting the best location for the outdoor unit, considering heat, noise, wind, and strength.

Winter and Seaside Installation Advice

Advice for seaside installation and areas with heavy snowfall.

HR Unit Installation Location Requirements

Specifies conditions for installing the HR unit indoors.

Installation Space

Basic Installation Space Requirements

Details required clearances for air inlet and servicing for individual installations.

Wall and Side Clearance

Space requirements when inlet air enters from sides and installation near walls.

Unit Enclosure Clearance

Required spacing when the unit is enclosed by walls.

Overhead Obstruction Clearance

Clearance requirements when there is an obstruction above the unit.

Collective Unit Spacing

Space needed for collective and continuous installation, considering air and people passage.

Winter Operation and Snow Precautions

Measures for operating in snow or cold areas, including ducting and snow protection.

Lifting Method

Safe Lifting and Transportation Procedures

Instructions for safely lifting and carrying the outdoor unit using ropes and proper support.

Installation

Anchor Bolt Location and Layout

Diagrams showing anchor bolt placement for individual and collective installations.

Foundation and Anti-Vibration Requirements

Guidelines for fixing the unit securely to prevent movement and using anti-vibration materials.

Refrigerant piping installation

Pipe Connection and Valve Operation Cautions

Critical safety warnings and procedures for connecting refrigerant pipes and operating valves.

Outdoor Unit Pipe Connection Procedure

Instructions on removing panels for pipe connection and sealing openings.

Outdoor Unit Pipe Connection Diagrams

Diagrams for connecting two outdoor units with pipe sizes.

HR Unit Installation and Pipe Connections

Steps for hanging and insulating the HR unit, ensuring proper tilt.

HR Unit to Indoor;Outdoor Pipe Routing

How to connect refrigerant pipes between outdoor, HR, and indoor units.

HR Unit Type Selection

Guidance on selecting HR unit types based on the number of connectable indoor units.

Reducers for Indoor Unit and HR Unit

Diagrams illustrating the use of reducers for indoor units and HR units.

Piping Material and Installation Best Practices

Specifies approved materials and minimum wall thickness for refrigerant piping.

Piping Insulation and Penetration Sealing

Instructions for insulating pipes and sealing wall penetrations properly.

Outdoor Unit to Outdoor Unit Pipe Length Calculation

Formula and diagram for calculating pipe length between outdoor units.

Refrigerant Piping System Configuration

Guidelines for system layout, pipe length, height differences, and serial connections.

Pipe Diameter for Branches to HR Units

Pipe diameters for connecting branches to HR units based on indoor unit capacity.

Outdoor Unit to First Branch Pipe Sizing

Specifies pipe diameters for outdoor unit connections to the first branch.

Branch to Indoor Unit Pipe Sizing

Details pipe sizes for connecting indoor units from branches.

Calculating Total Refrigerant Amount

Formula and method for calculating the total refrigerant amount and additional charge.

Refrigerant Leakage Limit and Safety

Defines limits for refrigerant leakage and safety measures.

Y Branch Pipe Fitting Installation

Instructions for installing Y-branch fittings, ensuring proper orientation and insulation.

Y Branch Pipe Configurations

Diagrams illustrating various Y branch pipe configurations.

Refrigerant Leak Test Procedure

Steps for performing a leak test using nitrogen gas and pressure checks.

System Vacuum and Drying Procedure

Guidelines for vacuuming the system and drying to remove moisture.

Refrigerant Charging Methods

Methods for primary and secondary refrigerant charging after vacuuming.

Refrigerant Piping Thermal Insulation

Instructions for insulating pipes and sealing wall penetrations properly.

Sealing Pipe Penetrations

Methods for sealing pipe penetrations through walls and fire limits.

Electrical Wiring

General Electrical Safety and Regulations

Adherence to regulations, use of authorized engineers, and proper grounding.

Transmission Line Cabling Requirements

Guidelines for using 2-core shield cable and avoiding multi-core cable for transmission lines.

Cable Usage and Capacitor Precautions

Proper use of shield cables, avoiding multi-core cables, and capacitor installation warnings.

Control Box Wiring and PCB Identification

Procedures for accessing the control box, connecting wiring, and identifying PCB components.

Communication and Power Line Separation

Recommended types, sizes, and separation distances for communication and power lines.

Main Power Supply and Wiring Standards

Guidelines for power supply, wire sizing, and adherence to local wiring regulations.

Power Wiring Terminal Connection Practices

Best practices for connecting power wires to terminal blocks, using correct terminals and tools.

Single Outdoor Unit Transmission Cable Example

Illustrates transmission cable connections for a single outdoor unit system.

Multiple Outdoor Unit Transmission Cable Example

Shows transmission cable connections for multiple outdoor unit systems.

HR Unit PCB

SW02 M DIP Switch Functions

Explains the primary functions of the SW02M DIP switch for HR unit setup.

HR Unit Addressing Method Selection

How to select between automatic and manual addressing for HR unit valves.

HR Unit Model Selection via DIP Switch

How to configure the HR unit model based on the number of connected rooms using DIP switches.

Valve Group Setting Configuration

Setting the valve group control based on indoor unit capacity and Y branch pipe usage.

SW05 M Rotary Switch for HR Unit Addressing

Setting the SW05M rotary switch for HR unit addressing.

Manual Valve Addressing Setup Procedures

Using SW01M, SW03M, SW04M for manual valve addressing and setting central control addresses.

Auto Addressing Flowchart for Indoor Units

Step-by-step procedure for automatically addressing indoor units.

Auto Pipe Detection Flowchart

Process for automatically detecting pipe connections between units.

Manual Pipe Detection Flowchart

Steps for manually detecting pipe connections if auto detection fails.

Example of Manual Valve Addressing

Explains manual addressing steps with examples.

Checking Valve Address Example

Example of checking valve address settings.

Manual Valve ID Identification

Explains how to identify manual valve IDs.

Main PCB

DIP Switch Setting Verification

How to check and set DIP switch values using the 7-segment LED.

Master Unit Setting Verification

Procedure for checking master unit settings, including model code and unit type.

Master Outdoor Unit DIP Switch Settings (SW01 B;SW02 B)

Configuration of SW01B/SW02B DIP switches for master outdoor unit functions.

Master Outdoor Unit DIP Switch Functions (Continued)

DIP switch settings for various master unit functions like snow, defrosting, and fan modes.

Slave Outdoor Unit DIP Switch Settings

DIP switch settings for slave outdoor units.

Corresponding Outdoor Unit DIP Switch Settings

DIP switch settings for inverter back up and unit back up functions.

Indoor Unit Group Number Setting

Procedures for setting group numbers for indoor units using the main PCB terminal block.

Manual Valve Addressing Example with Central Control

Example of setting valve addresses to match indoor unit central control addresses.

Test Run

Pre-Test Run Checks

Essential checks before performing the test run, including refrigerant leaks and insulation resistance.

Troubleshooting Test Run Abnormalities

Identifies common phenomena, causes, and troubleshooting steps for component failures.

Sensor Checking Function Procedure

Step-by-step guide to using the sensor checking function via PCB buttons and DIP switches.

Sensor Error Code Interpretation

Explains how error codes are displayed and lists common sensor errors.

Refrigerant Checking Function Operation

Procedure for using the function to automatically charge and check refrigerant levels.

Troubleshooting Refrigerant Check Results

Actions to take based on the results of the refrigerant checking function.

Night Silent Operation Function Setup

How to set fan speed for reduced noise during night operation.

Vacuum Mode Setting and Cancellation

Procedure for setting and cancelling the vacuum mode for system preparation.

Self-Diagnosis Function

Error Indication and Indoor Unit Errors

How errors are indicated and lists common indoor unit errors.

Outdoor Unit Related Errors (Part 1)

List and causes of errors related to outdoor unit voltage, compressor, and cooling.

Outdoor Unit Related Errors (Part 2)

List and causes of errors related to outdoor unit sensors, connections, and capacity.

Outdoor Unit Related Errors (Part 3)

List and causes of errors related to outdoor unit fan, PFC, and power unbalance.

Outdoor Unit Related Errors (Part 4)

List and causes of errors related to outdoor unit sensors, operation mode conversion, and compressor.

Caution For Refrigerant Leak

Limiting Refrigerant Concentration

Defines limiting concentration for R410A refrigerant and its calculation.

Calculating Concentration and Leak Countermeasures

How to calculate concentration and implement countermeasures for leaks.

Installation guide at the seaside

Seaside Installation Precautions and Location Selection

Specific guidelines for installing in seaside environments to prevent corrosion.

Summary

Safety Precautions

Warning, Caution, and Symbol Meanings

Explains hazard symbols and their implications for safety.

Electrical Installation Safety

Ensures electrical safety through proper grounding and dedicated circuits.

Unit Handling and Environmental Safety

Precautions for unit handling, environmental hazards, and device settings.

Refrigerant and Gas Leak Safety

Safety measures for gas leaks, ventilation, and correct refrigerant handling.

Operational and Handling Safety

Guidelines for safe operation, handling, and preventing injuries.

Installation Environment Safety

Ensures safe installation by considering environment, noise, and wiring.

Location-Specific Safety

Safety advice for specific locations and environmental factors like sea wind.

Secure Connections and Transportation Safety

Ensures secure installation, safe transport, and proper disposal of packaging materials.

Pre-Operation Power Management

Importance of powering on the unit 6 hours before operation for crankcase heating.

Operation and Maintenance Safety Precautions

Safety measures during operation, maintenance, and handling of components.

Installation Process

Planning, Unit Installation, and Piping

Covers planning, unit installation, and refrigerant piping procedures.

Electrical Work, Testing, and Handover

Details electrical work, testing phases, and final customer handover.

Outdoor Unit Location Selection

Guidelines for selecting an optimal location for the outdoor unit, considering environmental factors.

Seaside Installation Considerations

Specific advice for installing near the sea, including windbreaks and drainage.

Select the Best Location

R410 A Refrigerant Information

Information and cautions regarding the use of R410A refrigerant.

Outdoor Unit Installation Site Requirements

Criteria for selecting the best location for the outdoor unit, considering heat, noise, wind, and strength.

Winter and Seaside Installation Advice

Advice for seaside installation and areas with heavy snowfall.

HR Unit Installation Location Requirements

Specifies conditions for installing the HR unit indoors.

Installation Space

Basic Installation Space Requirements

Details required clearances for air inlet and servicing for individual installations.

Wall and Side Clearance

Space requirements when inlet air enters from sides and installation near walls.

Unit Enclosure Clearance

Required spacing when the unit is enclosed by walls.

Overhead Obstruction Clearance

Clearance requirements when there is an obstruction above the unit.

Collective Unit Spacing

Space needed for collective and continuous installation, considering air and people passage.

Winter Operation and Snow Precautions

Measures for operating in snow or cold areas, including ducting and snow protection.

Lifting Method

Safe Lifting and Transportation Procedures

Instructions for safely lifting and carrying the outdoor unit using ropes and proper support.

Installation

Anchor Bolt Location and Layout

Diagrams showing anchor bolt placement for individual and collective installations.

Foundation and Anti-Vibration Requirements

Guidelines for fixing the unit securely to prevent movement and using anti-vibration materials.

Refrigerant piping installation

Pipe Connection and Valve Operation Cautions

Critical safety warnings and procedures for connecting refrigerant pipes and operating valves.

Outdoor Unit Pipe Connection Procedure

Instructions on removing panels for pipe connection and sealing openings.

Outdoor Unit Pipe Connection Diagrams

Diagrams for connecting two outdoor units with pipe sizes.

HR Unit Installation and Pipe Connections

Steps for hanging and insulating the HR unit, ensuring proper tilt.

HR Unit to Indoor;Outdoor Pipe Routing

How to connect refrigerant pipes between outdoor, HR, and indoor units.

HR Unit Type Selection

Guidance on selecting HR unit types based on the number of connectable indoor units.

Reducers for Indoor Unit and HR Unit

Diagrams illustrating the use of reducers for indoor units and HR units.

Piping Material and Installation Best Practices

Specifies approved materials and minimum wall thickness for refrigerant piping.

Piping Insulation and Penetration Sealing

Instructions for insulating pipes and sealing wall penetrations properly.

Outdoor Unit to Outdoor Unit Pipe Length Calculation

Formula and diagram for calculating pipe length between outdoor units.

Refrigerant Piping System Configuration

Guidelines for system layout, pipe length, height differences, and serial connections.

Pipe Diameter for Branches to HR Units

Pipe diameters for connecting branches to HR units based on indoor unit capacity.

Outdoor Unit to First Branch Pipe Sizing

Specifies pipe diameters for outdoor unit connections to the first branch.

Branch to Indoor Unit Pipe Sizing

Details pipe sizes for connecting indoor units from branches.

Calculating Total Refrigerant Amount

Formula and method for calculating the total refrigerant amount and additional charge.

Refrigerant Leakage Limit and Safety

Defines limits for refrigerant leakage and safety measures.

Y Branch Pipe Fitting Installation

Instructions for installing Y-branch fittings, ensuring proper orientation and insulation.

Y Branch Pipe Configurations

Diagrams illustrating various Y branch pipe configurations.

Refrigerant Leak Test Procedure

Steps for performing a leak test using nitrogen gas and pressure checks.

System Vacuum and Drying Procedure

Guidelines for vacuuming the system and drying to remove moisture.

Refrigerant Charging Methods

Methods for primary and secondary refrigerant charging after vacuuming.

Refrigerant Piping Thermal Insulation

Instructions for insulating pipes and sealing wall penetrations properly.

Sealing Pipe Penetrations

Methods for sealing pipe penetrations through walls and fire limits.

Electrical Wiring

General Electrical Safety and Regulations

Adherence to regulations, use of authorized engineers, and proper grounding.

Transmission Line Cabling Requirements

Guidelines for using 2-core shield cable and avoiding multi-core cable for transmission lines.

Cable Usage and Capacitor Precautions

Proper use of shield cables, avoiding multi-core cables, and capacitor installation warnings.

Control Box Wiring and PCB Identification

Procedures for accessing the control box, connecting wiring, and identifying PCB components.

Communication and Power Line Separation

Recommended types, sizes, and separation distances for communication and power lines.

Main Power Supply and Wiring Standards

Guidelines for power supply, wire sizing, and adherence to local wiring regulations.

Power Wiring Terminal Connection Practices

Best practices for connecting power wires to terminal blocks, using correct terminals and tools.

Single Outdoor Unit Transmission Cable Example

Illustrates transmission cable connections for a single outdoor unit system.

Multiple Outdoor Unit Transmission Cable Example

Shows transmission cable connections for multiple outdoor unit systems.

HR Unit PCB

SW02 M DIP Switch Functions

Explains the primary functions of the SW02M DIP switch for HR unit setup.

HR Unit Addressing Method Selection

How to select between automatic and manual addressing for HR unit valves.

HR Unit Model Selection via DIP Switch

How to configure the HR unit model based on the number of connected rooms using DIP switches.

Valve Group Setting Configuration

Setting the valve group control based on indoor unit capacity and Y branch pipe usage.

SW05 M Rotary Switch for HR Unit Addressing

Setting the SW05M rotary switch for HR unit addressing.

Manual Valve Addressing Setup Procedures

Using SW01M, SW03M, SW04M for manual valve addressing and setting central control addresses.

Auto Addressing Flowchart for Indoor Units

Step-by-step procedure for automatically addressing indoor units.

Auto Pipe Detection Flowchart

Process for automatically detecting pipe connections between units.

Manual Pipe Detection Flowchart

Steps for manually detecting pipe connections if auto detection fails.

Example of Manual Valve Addressing

Explains manual addressing steps with examples.

Checking Valve Address Example

Example of checking valve address settings.

Manual Valve ID Identification

Explains how to identify manual valve IDs.

Main PCB

DIP Switch Setting Verification

How to check and set DIP switch values using the 7-segment LED.

Master Unit Setting Verification

Procedure for checking master unit settings, including model code and unit type.

Master Outdoor Unit DIP Switch Settings (SW01 B;SW02 B)

Configuration of SW01B/SW02B DIP switches for master outdoor unit functions.

Master Outdoor Unit DIP Switch Functions (Continued)

DIP switch settings for various master unit functions like snow, defrosting, and fan modes.

Slave Outdoor Unit DIP Switch Settings

DIP switch settings for slave outdoor units.

Corresponding Outdoor Unit DIP Switch Settings

DIP switch settings for inverter back up and unit back up functions.

Indoor Unit Group Number Setting

Procedures for setting group numbers for indoor units using the main PCB terminal block.

Manual Valve Addressing Example with Central Control

Example of setting valve addresses to match indoor unit central control addresses.

Test Run

Pre-Test Run Checks

Essential checks before performing the test run, including refrigerant leaks and insulation resistance.

Troubleshooting Test Run Abnormalities

Identifies common phenomena, causes, and troubleshooting steps for component failures.

Sensor Checking Function Procedure

Step-by-step guide to using the sensor checking function via PCB buttons and DIP switches.

Sensor Error Code Interpretation

Explains how error codes are displayed and lists common sensor errors.

Refrigerant Checking Function Operation

Procedure for using the function to automatically charge and check refrigerant levels.

Troubleshooting Refrigerant Check Results

Actions to take based on the results of the refrigerant checking function.

Night Silent Operation Function Setup

How to set fan speed for reduced noise during night operation.

Vacuum Mode Setting and Cancellation

Procedure for setting and cancelling the vacuum mode for system preparation.

Self-Diagnosis Function

Error Indication and Indoor Unit Errors

How errors are indicated and lists common indoor unit errors.

Outdoor Unit Related Errors (Part 1)

List and causes of errors related to outdoor unit voltage, compressor, and cooling.

Outdoor Unit Related Errors (Part 2)

List and causes of errors related to outdoor unit sensors, connections, and capacity.

Outdoor Unit Related Errors (Part 3)

List and causes of errors related to outdoor unit fan, PFC, and power unbalance.

Outdoor Unit Related Errors (Part 4)

List and causes of errors related to outdoor unit sensors, operation mode conversion, and compressor.

Caution For Refrigerant Leak

Limiting Refrigerant Concentration

Defines limiting concentration for R410A refrigerant and its calculation.

Calculating Concentration and Leak Countermeasures

How to calculate concentration and implement countermeasures for leaks.

Installation guide at the seaside

Seaside Installation Precautions and Location Selection

Specific guidelines for installing in seaside environments to prevent corrosion.

LG ARUB115BT2 Specifications

General IconGeneral
Energy Star CertifiedYes
RefrigerantR32
TypeSplit System
Cooling Capacity11500 BTU/h
Smart FeaturesWi-Fi Enabled
Dimensions (Outdoor Unit)700 x 500 x 275 mm

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