LG ARNU42GBGA4 installation manual

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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.

Ceiling Concealed Duct - High Static

Original instruction

www.lg.com

P/NO : MFL68320319

Ceiling Concealed Duct - High Static Type Indoor Unit Installation Manual

TABLE OF CONTENTS

Installation Requirements

Features ...................................	3
Safety Precautions.................	4
Installation ...............................	7
Selection the best location ....	7
Ceiling opening dimension
and hanging bolt location ......	8
Indoor Unit Installation...........	9
Wiring Connection .................	9
Checking the Drainage........	10
Indoor Unit Drain Piping ......	11
Dip Switch Setting ...............	13
Group Control Setting..........	14
Model Designation...............	18
Airborne Noise Emission.....	18
Limiting concentration .........	18
How to Set E.S.P? ................	19

Required Parts

Four type "A" screws

Connecting cable

Pipes: Gas side Liquid side

(Refer to Product Data)

Insulation materials

Additional drain pipe

Required Tools

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

Features

Air outlet vents

Air filters

Air intake vents

Wired Remote Controller (Accessory)

Feature

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Name	Drain hose	Clamp metal	Washer for	Clamp	Insulation for	(Other)
Name	Drain hose	Clamp metal	hanging backet	(Tie Wrap)	fitting	(Other)
			hanging backet	(Tie Wrap)	fitting
Quantity	1 EA	2 EA	8 EA	4 EA	1 SET
						• Owner's manual
						• Installation manual
Shape					for gas pipe
					for liquid pipe

Installation Manual 3

Safety Precautions

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

■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.

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 electric shock.

Install the panel and the cover of control box securely.

•There is risk of fire or electric shock.

Do not modify or extend the power cable.

•There is risk of fire or electric shock.

Always install a dedicated circuit and breaker.

•Improper wiring or installation may cause fire or electric shock.

Do not let the air conditioner run for a long time when the humidity is very high and a door or a window is left open.

•Moisture may condense and wet or damage furniture.

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.

Be cautious when unpacking and installing the product.

•Sharp edges could cause injury. Be especially careful of the case edges and the fins on the condenser and evaporator.

For installation, always con-	Do not install the product on	Be sure the installation area
tact the dealer or an	a defective installation stand.	does not deteriorate with age.
Authorized Service Center.

•There is risk of fire, electric shock, explosion, or injury.

•It may cause injury, accident, or damage to the product.

•If the base collapses, the air conditioner could fall with it, causing property damage, product failure, and personal injury.

4 Indoor Unit

	Safety Precautions
Do not turn on the breaker or power under condi-	Use a vacuum pump or Inert (nitrogen) gas when
tion that front panel, cabinet, top cover, control	doing leakage test or air purge. Do not compress
box cover are removed or opened.	air or Oxygen and Do not use Flammable gases.
	Otherwise, it may cause fire or explosion.
• Otherwise, it may cause fire, electric shock, explosion	• There is the risk of death, injury, fire or explosion.
or death.

■ Operation

Do not let the air conditioner run	Take care to ensure that power
for a long time when the humidi-	cable could not be pulled out or
ty is very high and a door or a	damaged during operation.
window is left open.
• Moisture may condense and wet or	• There is risk of fire or electric
damage furniture.	shock.
Do not plug or unplug the power	Do not touch(operate) the prod-
supply plug during operation.	uct with wet hands.

•There is risk of fire or electric shock.

Do not allow water to run into electric parts.

•It may cause There is risk of fire, failure of the product, or electric shock.

When flammable gas leaks, turn off the gas and open a window for ventilation before turn the product on.

•There is risk of fire or electrical shock.

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

•There is risk of fire or failure of product.

If strange sounds, or small or smoke comes from product. Turn the breaker off or disconnect the power supply cable.

• Do not use the telephone or turn	• There is risk of electric shock or
switches on or off.	fire.
There is risk of explosion or fire.

Do not place anything on the power cable.

•There is risk of fire or electric shock.

Do not place a heater or other appliances near the power cable.

•There is risk of fire and electric shock.

Do not use the product in a tightly closed space for a long time.

•Oxygen deficiency could occur.

Stop operation and close the window in storm or hurricane. If possible, remove the product from the window before the hurricane arrives.

•There is risk of property damage, failure of product, or electric shock.

Do not open the inlet grill of the	When the product is soaked	Be cautious that water could not
product during operation.	(flooded or submerged), contact	enter the product.
(Do not touch the electrostatic	an Authorized Service Center.
filter, if the unit is so equipped.)
• There is risk of physical injury,	• There is risk of fire or electric	• There is risk of fire, electric shock,
electric shock, or product failure.	shock.	or product damage.

Ventilate the product from time to time when oper-	Turn the main power off when cleaning or main-
ating it together with a stove, etc.	taining the product.
• There is risk of fire or electric shock.	• There is risk of electric shock.
When the product is not be used for a long time,	Take care to ensure that nobody could step on or
disconnect the power supply plug or turn off the	fall onto the outdoor unit.
breaker.
• There is risk of product damage or failure, or unintend-	• This could result in personal injury and product dam-
ed operation.	age.

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Installation Manual 5

Safety Precautions

■ Installation

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

•Low refrigerant levels may cause failure of product.

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

Install the drain hose to ensure that water is drained away properly.

•A bad connection may cause water leakage.

Use two or more people to lift and transport the product.

Keep level even when installing the product.

•To avoid vibration or water leakage.

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

• It may cause a problem for	• Avoid personal injury.	• It may cause corrosion on the
your neighbors.		product. Corrosion, particular-
		ly on the condenser and evap-
		orator fins, could cause prod-
		uct malfunction or inefficient
		operation.

■ Operation

Do not expose the skin directly to cool air for long periods of time. (Don't sit in the draft.)

• This could harm to your health.

Do not use the product for special purposes, such as preserving foods, works of art, etc. It is a consumer air conditioner, not a precision refrigeration system.

• There is risk of damage or loss of property.

Do not block the inlet or outlet of air flow.

• It may cause product failure.

Use a soft cloth to clean. Do not	Do not touch the metal parts of the
use harsh detergents, solvents,	product when removing the air filter.
etc.	They are very sharp!
• There is risk of fire, electric	• There is risk of personal injury.
shock, or damage to the plastic
parts of the product.
Always insert the filter securely.	Do not insert hands or other objects
Clean the filter every two weeks or	through the air inlet or outlet while the
more often if necessary.	product is operated.
• A dirty filter reduces the efficiency of	• There are sharp and moving parts
the air conditioner and could cause	that could cause personal injury.
product malfunction or damage.