LG LTNC242QLE0 INSTALLATION MANUAL

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.

TYPE : Ceiling Cassette

www.lg.com

P/NO : MFL42291413

Ceiling Cassette Air Conditioner Installation Manual

TABLE OF CONTENTS

Installation

Required Parts

Requirements

Safety Precautions..............................	3
Introduction..........................................	6
Symbols used in this Manual ............	6
Features ............................................	6
Installation............................................	7
Installation Tools................................	7
Installation of Indoor,
Outdoor Unit......................................	8
Air purging.......................................	23
Test running.....................................	25
Installer Setting -PQRCUSA0..........	27
Installation guide at the seaside......	37

Connecting cable

Pipes: Gas side Liquid side

Hanging Bolt

(W 3/8 or M10 length 650mm)

Insulated drain hose

Additional Drain hose (Inner Dia.............32mm)

Required Tools

Horizontal meter

Screw driver

Electric drill

Hole core drill (ø70mm)

Flaring Tools set

Torque Wrenches

Hexagonal Wrench (4mm, 5mm)

Gas-leak detector

Owner’s Manual

Installation Manual

Thermometer

2 Ceiling Cassette Air Conditioner

Safety Precautions

Safety Precautions

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

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

νLG Electronics is not responsible for Product`s malfunction or damage which caused by improper installation or misuse of operation guide.

This symbol indicates the possibility of death or serious injury.

This symbol indicates the possibility of injury or damage.

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

Be sure not to do.

Be sure to follow the instruction.

ν 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 electric shock.

Always ground the product.

•There is risk of fire or electric shock.

Always install a dedicated	Use the correctly rated breaker
circuit and breaker.	or fuse.

•There is risk of fire or electric shock.

Do not modify or extend the power cable.

•There is risk of fire or electric shock.

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

Do not install, remove, or reinstall the unit by yourself (customer).

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

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.

Use a vacuum pump or Insert (nitrogen) gas when doing leakage test or air purge. Do not compress air or Oxygen and Do not use Flammable gases. Otherwise, it may cause fire or explosion.

• There is the risk of death, injury, fire or explosion.

Installation Manual 3

Safety Precautions

For installation, always contact the dealer or an Authorized Service Center.

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

Do not install the product on a defective installation stand.

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

Be sure the installation area does not deteriorate with age.

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.

• If the base collapses, the air conditioner could	• Moisture may condense and wet or damage
fall with it, causing property damage, product	furniture.
failure, and personal injury.

■ Operation

Do not touch(operate) the	Do not place a heater or other	Do not let electric parts of the
product with wet hands.	appliances near the power	product get wet.
	cable.

•There is risk of fire or electrical shock.

•There is risk of fire and electric shock.

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

•There is risk of electric shock or fire.

When the product is soaked (flooded or submerged), contact an Authorized Service Center.

•There is risk of fire or electric shock.

Be cautious that water could not enter the product.

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

Turn the main power off when cleaning or maintaining the product.

• There is risk of electric shock.

When the product is not be used for a long time, disconnect the power supply plug or turn off the breaker.

•There is risk of product damage or failure, or unintended operation.

Take care to ensure that nobody could step on or fall onto the outdoor unit.

•This could result in personal injury and product damage.

4 Ceiling Cassette Air Conditioner

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 be offensive to the neighborhoods or damage property.

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.

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, particularly
		on the condenser and evaporator
		fins, could cause product
		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.)

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.

• This could harm to your health.

Do not block the inlet or outlet of air flow.

• It may cause product failure.

• There is risk of damage or loss of property.

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 shock, or	• There is risk of personal injury.
damage to the plastic parts of the
product.

Do not step on or put anyting on the product. (outdoor units)

•There is risk of personal injury and failure of product.

Do not drink the water drained from the product.

•It is not sanitary and could cause serious health issues.

Always insert the filter securely. Clean the filter every two weeks or more often if necessary.

•A dirty filter reduces the efficiency of the air conditioner and could cause product malfunction or damage.

Use a firm stool or ladder when cleaning or maintaining the product.

•Be careful and avoid personal injury.

Do not insert hands or other objects through the air inlet or outlet while the product is operated.

•There are sharp and moving parts that could cause personal injury.

Replace the all batteries in the remote control with new ones of the same type. Do not mix old and new batteries or different types of batteries.

•Could adversley effect operation.

Do not recharge or disassemble the batteries. Do not dispose of batteries in a fire.

• They may burn or explode.

If the liquid from the batteries gets onto your skin or clothes, wash it well with clean water. Do not use the remote if the batteries have leaked.

•The chemicals in batteries could cause burns or other health hazards.

Installation Manual 5

Introduction

Introduction

Symbols used in this Manual

This symbol alerts you to the risk of electric shock.

This symbol alerts you to hazards that may cause harm to the air conditioner.

NOTICE

This symbol indicates special notes.

Features

Anti-bacteria

Air Outlet

Air Inlet

Remote

Controller

6 Ceiling Cassette Air Conditioner

Installation

Installation

Installation Tools

Figure	Name	Figure	Name
	Screw driver		Ohmmeter

Electric drill

Hexagonal wrench

Measuring tape, Knife

Ammeter

	Hole core drill	Gas-leak detector
	Spanner	Thermometer,
		Horizontal meter

Torque wrench

Flaring tool set

Installation Manual 7

Installation

Installation of Indoor, Outdoor Unit

Selection of the best location

1)Indoor unit

•There should not be any heat source or steam near the unit.

•There should not be any obstacles to prevent the air circulation.

•A place where air circulation in the room will be good.

•A place where drainage can be easily obtained.

•A place where noise prevention is taken into consideration.

•Do not install the unit near the door way.

•Ensure the spaces indicated by arrows from the wall, ceiling, or other obstacles.

•The indoor unit must keep the maintenance space.

Ceiling			<![if ! IE]> <![endif]>more	Ceiling Board
Ceiling Board			<![if ! IE]> <![endif]>or
			<![if ! IE]> <![endif]>300		<![if ! IE]> <![endif]>less
	<![if ! IE]> <![endif]>1000 or more				<![if ! IE]> <![endif]>or
500 or		<![if ! IE]> <![endif]>2500	500 or		<![if ! IE]> <![endif]>300
more			<![if ! IE]> <![endif]>less	more
		<![if ! IE]> <![endif]>Above	<![if ! IE]> <![endif]>400 or		Unit:mm
			Floor

	2) Outdoor unit	More		Sunroof
	• If an awning is built over the unit to prevent	300mm
	direct sunlight or rain exposure, be careful that
	heat radiation from the condenser is not			More than
	restricted.	Fence		300mmm
	• There should not be any animals or plants		or
	which could be affected by hot air discharged.
	• Ensure the spaces indicated by arrows from	obstacles		More than 600mm
	the wall, ceiling, fence or other obstacles.
				More than 700mm

ηPlease use an annexed sheet or the corrugated cardboard on the bottom of packing as installation sheet.

	Or
Annexed sheet	Packing corrugated
	cardboard on the
	bottom

ηWhen using the bottom sheet, please use it after separating the installation sheet from packing of the product floor by using a knife etc as a picture below.

8 Ceiling Cassette Air Conditioner

												Installation
3) Piping length and the elevation
	Pipe Size				Length A(m)					Elevation B(m)		*Additional
Model	mm(inch)											refrigerant
	Gas			Liquid	Standard		Max.		Standard		Max.	(g/m)
LT-H182QLE0	12.70(1/2”)		6.35(1/4”)		7.5		30		5		20	30
LT-H242QLE0	15.88(5/8”)		6.35(1/4”)		7.5		30		5		20	35
LT-H302PLE0	15.88(5/8")		6.35(1/4")		7.5		50		5		30	25
LT-H362NLE0	15.88(5/8")		6.35(1/4")		7.5		50		5		30	45
LT-H482MLE0	19.05(3/4")		9.52(3/8")		7.5		50		5		30	45
LT-H602MLE0	19.05(3/4")		9.52(3/8")		7.5		50		5		30	50
LT-C182QLE0	12.70(1/2”)		6.35(1/4”)		7.5		30		5		20	30
LT-C242QLE0	15.88(5/8”)		6.35(1/4”)		7.5		30		5		20	35
LT-C302PLE0	15.88(5/8")		6.35(1/4")		7.5		50		5		30	30
LT-C362NLE0	15.88(5/8")		6.35(1/4")		7.5		50		5		30	30
LT-C482MLE0	19.05(3/4")		9.52(3/8")		7.5		50		5		30	55
LT-C602MLE0	19.05(3/4")		9.52(3/8")		7.5		50		5		30	55
	Indoor unit								Outdoor unit
							A
				Outdoor unit					B
					Indoor unit

CAUTION:

•Rated performance for refrigerant line length of:7.5m

•Capacity is based on standard length and maximum allowance length is on the basis of reliability.

•Improper refrigerant charge may result in abnormal cycle.

•Oil trap should be installed every 10 meters.

Installation Manual 9

Installation

Ceiling opening dimensions and hanging bolt location

•The dimensions of the paper model for installing are the same as those of the ceiling opening dimensions.

•Please use included paper or cardboard on the bottom of packaging as installation paper

•Select and mark the position for fixing bolts and piping hole.

•Decide the position for fixing bolts slightly tilted to the drain direction after considering the direction of drain hose.

	• Drill the hole for anchor bolt on the ceiling.	Included Paper				Cardboard on the bottom
						of packaging
	• The hole size for four anchor bolts is			585~660(TQ)
	Ø 14.5mm & 40mm depth.
				875(TM/TN/TP)
	• When using cardboard on the bottom of packaging,			517(TQ)
	use after separating installation paper from bottom			787(TM/TN/TP)
	of the product packaging using back of a knife as	<![if ! IE]> <![endif]>523(TQ)	<![if ! IE]> <![endif]>671(TM/TN/TP)	<![if ! IE]> <![endif]>570(TQ)	<![if ! IE]> <![endif]>840(TM/TN/TP)	<![if ! IE]> <![endif]>517(TQ)	<![if ! IE]> <![endif]>684(TM/TN/TP)	<![if ! IE]> <![endif]>585~660(TQ) 875(TM/TN/TP)
	shown in the picture (TM/TN/TP)
				570(TQ)
				840(TM/TN/TP)
								Unit: mm

CAUTION:

•This air-conditioner uses a drain pump.

•Horizontly install the unit using a level gauge.

•During the installation, care should be taken not to damage electric wires.

NOTICE

Ceiling

Level gauge

Ceiling board

•Thoroughly study the following installation locations:

1.In such places as restaurants and kitchens, considerable amount of oil steam and flour adhere to the turbo fan, the fin of the heat exchanger and the drain pump, resulting in heat exchange reduction, spraying, dispersing of water drops, drain pump malfunction, etc.

In these cases, take the following actions:

•Make sure that the ventilation fan for smoke-collecting hood on a cooking table has sufficient capacity so that it draws oily steam which should not flow into the suction of the air conditioner.

•Make enough distance from a cooking room to install the air conditioner in such a place where it may not suck in oily steam.

Air conditioner

Take enough distance

Use the ventilation fan for smoke-collecting hood with sufficient capacity.

Cooking table

2.Avoid installing air conditioner in such circumstances where cutting oil mist or iron powder is in suspension in factories, etc.

3.Avoid places where inflammable gas is generated, flows in, is stored or vented.

4.Avoid places where sulfurous acid gas or corrosive gas is generated.

5.Avoid places near high frequency generators.

10 Ceiling Cassette Air Conditioner

Installation

The Indoor Unit Installation

	Hanging bolt	Keep the length of the bolt
	(W3/8 or M10)	from the bracket to 40mm
	Nut	Flat washer for M10
	(W3/8 or M10)
		(Attached Insulator,	Ceiling board
	Spring washer	accessory)
	(M10)
		Flat washer for M10
		(accessory)
		Nut
		(W3/8 or M10)

Ceiling

Air Conditioner body

Keep the length of 31~34mm between the air conditioner bottom surface and the ceiling surface

180mm Ceiling board

Set screw of

paper model (4 pieces)

Paper model

for installation

Open the ceiling board along the outer edge of the paper model

• The following parts is option.

Hanging Bolt	- W 3/8 or M10
Nut	- W 3/8 or M10
Spring Washer - M10
Plate Washer	- M10

CAUTION: Tighten the nut and bolt to prevent unit falling.

•Drill the piping hole on the wall slightly tilted to the outdoor side using a Ø 70 hole-core drill.

	Wall
Indoor	Outdoor
	Slope gradient for drain
	Should be 1/50 ~ 1/100

Remote Controller Installation

•Although the room temperature sensor is in the indoor unit, the remote controller should be installed in such places away from direct sunlight and high humidity.

Installation of the remote controller

•Select places that are not splashed with water.

•Select control position after receiving customer approval.

•The room temperature sensor is built in the indoor unit.

•This remote controller equipped with liquid crystal display. If this position is higher or lower, display is difficult to see.(The standard height is 1.2 ~ 1.5m high)

Routing of the remote controller cord

•Keep the remote controller cord away from the refrigerant piping and the drain piping.

•To protect the remote controller cord from electrical noise, place the cord at least 5cm away from other power cables (audio equipment, television set, etc.)

•If the remote controller cord is secured to the wall, provide a trap at the top of the cord to prevent water droplets from running.

Installation Manual 11

Installation

WIRED REMOTE CONTROL INSTALLATION

1.Please fix tightly using provided screw after placing remote controller setup board on the place where you like to setup.

-Please set it up not to bend because poor setup could take place if setup board bends. Please set up remote controller board fit to the reclamation box if there is a reclamation box.

-Install the product so as not to make a gap with the wall side and to prevent shaking after the installation.

<4 Hole reclamation box>

<2 Hole reclamation box>

2.Can set up Wired remote controller cable into three directions.

-Setup direction: the surface of wall reclamation, upper, right

-If setting up remote controller cable into upper and right side, please set up after removing remote controller cable guide groove.

Remove guide groove with long nose.

Reclamation to the surface of the wall

Upper part guide groove

Right part guide groove

2	2
3	3

1

<Wire guide grooves>

12 Ceiling Cassette Air Conditioner