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LG LV181HV4 - User Manual

LG LV181HV4
74 pages
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SINGLE ZONE
VERTICAL AIR HANDLING UNIT
INSTALLATION MANUAL
Single-Zone Vertical Air
Handling Unit System
18,000 - 48,000 Btu/h
LV420HV (42,000 Btu/h)
LV480HV (48,000 Btu/h)
LV181HV4 (18,000 Btu/h)
LV241HV4 (24,000 Btu/h)
LV361HV4 (36,000 Btu/h)

Table of Contents

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Summary

SAFETY INSTRUCTIONS

TABLE OF SYMBOLS

Explanation of warning symbols and their meaning for safe operation.

INSTALLATION SAFETY

Safety precautions and warnings specific to the installation process.

WIRING SAFETY

Critical safety guidelines and warnings for electrical wiring installation.

OPERATION SAFETY

Safety precautions and warnings for operating the air conditioning unit.

GENERAL DATA

Unit Nomenclature

Explanation of the model naming convention and its components.

Specifications

Detailed technical specifications for the vertical air handling units.

Electrical Data

Electrical data and ratings for outdoor units.

GENERAL INSTALLATION GUIDELINES

Location Selection

Guidelines for choosing the optimal installation site for the unit.

Oceanside Applications

Specific considerations for installing units in coastal environments.

Required Outdoor Unit Clearances

Minimum spacing requirements for adequate airflow and service access.

Rigging and Lifting Instructions

Safe procedures for handling, rigging, and lifting the outdoor unit.

Indoor Unit Clearances

Minimum space requirements for indoor unit installation and service.

Installing Ductwork

Guidelines and best practices for installing air ductwork.

REFRIGERANT SAFETY STANDARDS; DEVICE CONNECTION LIMITATIONS

Refrigerant Safety Standards

Guidelines for refrigerant safety and maximum allowable concentration.

Connection Limitations

Limits for refrigerant piping length and elevation differences.

SELECTING FIELD SUPPLIED PIPING

Selecting Field-Supplied Copper Piping

Guidance on selecting appropriate copper piping for the system.

COPPER EXPANSION AND CONTRACTION

Copper Expansion and Contraction

Managing thermal expansion and contraction of refrigerant piping.

PIPING HANDLING

Piping Materials and Handling

Proper methods and precautions for handling refrigerant piping.

REFRIGERANT SYSTEM ENGINEERING

No Pipe Size Substitutions

Emphasis on using specified pipe sizes and avoiding substitutions.

Pipe Supports

Requirements and guidelines for properly supporting refrigerant piping.

Underground Refrigerant Piping

Guidelines for installing refrigerant piping underground.

FLARING AND BRAZING PROCEDURES

Flaring Procedure

Step-by-step guide for performing flared connections.

Brazing Practices

Best practices and safety precautions for brazing refrigerant lines.

REFRIGERANT PIPING CONNECTIONS

Installation Overview

General approach and overview of refrigerant piping connections.

Pipe Bundling

Methods for bundling refrigerant pipes and cables correctly.

Outdoor Unit Connections

Procedure for connecting refrigerant piping to the outdoor unit.

Indoor Unit Connections

Procedure for connecting refrigerant piping to the indoor unit.

Drain Hose

Guidelines for installing and routing the condensate drain hose.

INSULATION

Refrigerant Piping System Insulation

Requirements for proper insulation of refrigerant piping.

EPDM Insulation Wall Thickness

Minimum wall thickness requirements for EPDM insulation.

ELECTRICAL SYSTEM INSTALLATION

General Information and Safety Guidelines

General safety precautions for electrical system installation.

Power Wiring Specifications and Best Practices

Guidelines for power wiring connections and best practices.

Communication; Connection Cable Specs

Specifications for communication/power cables between units.

Wall Controller Installation

Instructions for installing wired wall controllers.

External Static Pressure Setting Values

Default settings for External Static Pressure (ESP).

Indoor Unit Electrical Connections

Detailed steps for connecting wiring to the indoor unit.

Outdoor Unit Electrical Connections

Detailed steps for connecting wiring to the outdoor unit.

NJ;NK Chassis DIP Switch Settings

Configuration settings for NJ/NK chassis DIP switches.

FINAL INSTALLATION PROCEDURES

Triple Leak; Pressure Check

Procedure for performing a triple leak and pressure test.

Triple Evacuation Procedure

Steps for evacuating the refrigerant system to a specific micron level.

Trim Charge, Test Run

Procedure for adding refrigerant charge and performing a test run.

Pump Down, Cooling Only Mode

Procedure for pump down and setting the unit to cooling only mode.

TROUBLESHOOTING

LG SIMS - Self Diagnosis Functions

Using the SIMs app for system monitoring and self-diagnosis.

Error Codes

Understanding and interpreting error codes for troubleshooting.

CAUTIONS FOR REFRIGERANT LEAKS

Cautions for Refrigerant Leaks; Introduction

Safety information and calculations related to refrigerant leaks.

INSTALLATION CHECKLIST

Major Component Rough-In

Checklist items for initial component installation.

Piping and Insulation

Checklist items for refrigerant piping and insulation installation.

Condensate Pump; Drain Installation

Checklist items for condensate drain system installation.

LG LV181HV4 Specifications

General IconGeneral
Cooling Capacity18, 000 BTU/h
Heating Capacity20, 000 BTU/h
Airflow1, 100 CFM
Refrigerant TypeR410A
Energy Efficiency Ratio (EER)11.5
Weight24.3 lbs
Power Supply208-230V, 60Hz, 1 Phase

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