LG ARNU24GBHA1, ARNU36GBGA0, LRNU48GBRA0, LRNU24GBHA0 INSTALLATION MANUAL

LG

System

Heat Pump Indoor Unit

INSTALLATION MANUAL

MODELS: BR/BG/BH Series

Type: Ceiling Concealed Duct - High Static

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.

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Ceiling Concealed Duct - High Static Type Indoor Unit Installation Manual

TABLE OF CONTENTS

Installation Requirements

Features ...................................	3
Safety Precautions .................	4
Installation
Selection the best location ....	7
Ceiling opening dimension
and hanging bolt location ......	8
Indoor Unit Installation...........	9
Wiring Connection .................	9
Checking the Drainage........	10
Installation of Remote con-
troller.....................................	13
Two Thermistor system.......	14
How to Set E.S.P? ................	15

Required Parts		Required Tools

Four type "A" screws

Connecting cable

Pipes: Gas side Liquid side

(Refer to Product Data)

Insulation materials

Additional drain pipe

Level gauge

Screw driver

Electric drill

Hole core drill

Flaring tool set

Specified torque wrenches (different depending on model No.)

Spanner .......Half union

A glass of water

Screw driver

Hexagonal wrench

Gas-leak detector

Vacuum pump

Gauge manifold

Owner's manual

Thermometer

2 Indoor Unit

Feature

Features

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Air outlet vents

Air filters

Air intake vents

Remote Controller

Installation Manual 3

Safety Precautions

Safety Precautions

To prevent injury to the user or other people and property damage, the following instructions must be followed.

■Be sure to read before installing the air conditioner.

■Be sure to observe the cautions specified here as they include important items related to safety.

■Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications.

This symbol indicates the possibility of death or serious injury.

This symbol indicates the possibility of injury or damage to properties only.

■ Meanings of symbols used in this manual are as shown below.

Be sure not to do.

Be sure to follow the instruction.

■ Installation

Do not use a defective or underrated circuit breaker. Use this appliance on a dedicated circuit.

• There is risk of fire or electric shock.

Install the panel and the cover of control box securely.

For electrical work, contact the dealer, seller, a qualified electrician, or an Authorized Service Center.

•Do not disassemble or repair the product. There is risk of fire or elec-

tric shock.

Always install a dedicated circuit and breaker.

• There is risk of fire or electric shock.	• Improper wiring or installation may
	cause fire or electric shock.

Always ground the product.

• There is risk of fire or electric shock.

Use the correctly rated breaker or fuse.

• There is risk of fire or electric shock.

4 Indoor Unit

		Safety Precautions
Do not modify or extend the	Do not let the air conditioner	Be cautious when unpacking
power cable.	run for a long time when the	and installing the product.
	humidity is very high and a door
	or a window is left open.
• There is risk of fire or electric shock.	• Moisture may condense and wet or	• Sharp edges could cause injury. Be
	damage furniture.	especially careful of the case edges
		and the fins on the condenser and
		evaporator.

For installation, always contact		Do not install the product on a	Be sure the installation area
the dealer or an Authorized		defective installation stand.	does not deteriorate with age.
Service Center.
• There is risk of fire, electric shock,		• It may cause injury, accident, or	• If the base collapses, the air condi-
explosion, or injury.		damage to the product.	tioner could fall with it, causing prop-
			erty damage, product failure, and
			personal injury.

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Do not store or use flammable gas or combustibles near the product.

• There is risk of fire or failure of product.

Gasolin

Installation Manual 5

Safety Precautions

■ Installation

Always check for gas (refrigerant) leakage after installation or repair of product.

• Low refrigerant levels may cause

Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods.

•It may cause a problem for your neighbors.

Keep level even when installing

-the product.

• To avoid vibration or water leakage.

90˚

Do not install the product where it will be exposed to sea wind (salt spray) directly.

•It may cause corrosion on the product. Corrosion, particularly on the condenser and evaporator fins, could cause product malfunction or inefficient operation.

6 Indoor Unit