LG UU48 INSTALLATION INSTRUCTIONS

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ENGLISH ITALIANO ESPAÑOL FRANÇAIS DEUTSCH

Air Conditioner

INSTALLATION MANUAL

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.

2 Air Conditioner

Air Conditioner Installation Manual

TABLE OF CONTENTS

Safety Precautions .....3

Installation of Indoor,

Outdoor unit................6

The indoor unit

installation...................9

Remote controller

installation.................23

Wiring connection ....24

Connecting Pipes to

the Indoor Unit ..........26

Installation to

decorative panel .......28

Indoor unit drain

piping .........................29

Test running..............32

Optional operation....34

•

Connecting cable

• Four Type "A" Screw

• Hanging Bolt

(W 3/8 or M10 length 650mm)

• Pipes: Gas side

Liquid side

• Insulated drain hose

• Additional Drain hose

Inner Dia

Cassette type.............32mm

Duct type....................25mm

Convertible type.........25mm

•

Level

•

Screw driver

•

Electric drill

•

Hole core drill (ø70mm)

• Flaring Tools set

• Torque Wrenches

• Hexagonal Wrench (4mm, 5mm)

• Gas-leak detector

•

Owner’s Manual

•

Thermometer

Installation

Requirements

Required Parts Required Tools

Safety Precautions

Installation Manual 3

ENGLISH

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.

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

WARNING

CAUTION

This symbol indicates the possibility of death or serious injury.

This symbol indicates the possibility of injury or damage.

WARNING

Be sure not to do.

Be sure to follow the instruction.

Safety Precautions

■ Installation

Install the panel and the cover of

control box securely.

• 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

Use the correctly rated breaker

or fuse.

• There is risk of fire or

electric shock.

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.

Always ground the product.

• There is risk of fire or

electric shock.

4 Air Conditioner

Safety Precautions

Do not modify or extend the power cable.

• 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 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.

•

If the base collapses, the air conditioner could fall with

it, causing property damage, product failure, and

personal injury.

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.

Do not store or use flammable gas or

combustibles near the product.

• There is risk of fire or failure of product.

It is recommended to install the indoor unit

into the one big space, rather than into the

some small spaces.

■ Operation

Gasolin

Installation Manual 5

ENGLISH

Safety Precautions

Always check for gas (refrigerant) leakage after

installation or repair of product.

• Low refrigerant levels may cause failure of

product.

Install the drain hose to ensure that water is

drained away properly.

• A bad connection may cause water leakage.

Keep level even when installing the product.

• To avoid vibration or water leakage.

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.

Use two or more people to lift and transport the

product.

• Avoid personal injury.

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.

CAUTION

90˚

■ Installation

6 Air Conditioner

Installation of Indoor, Outdoor Unit

1. Indoor unit

Cassette type

• 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.

Duct type

• The place shall easily bear a load exceeding

four times the indoor unit’s weight.

• The place shall be able to inspect the unit as

the figure.

• The place where the unit shall be leveled.

• The place shall allow easy water

drainage.(Suitable dimension “H” is necessary

to get a slope to drain as figure.)

• The place shall easily connect with the

outdoor unit.

• The place where the unit is not affected by an

electrical noise.

• The place where air circulation in the room will

be good .

• There should not be any heat source or steam

near the unit

Selection of the best location

Unit:cm

Ceiling

Ceiling Board

30 or more

Above 250

330 or less

100

or more

50 or

30 or less

Floor

600600

Top view

(unit: mm)

Front view

Front

Inspection hole

(600X600)

Control box

1000

Installation of Indoor, Outdoor Unit

Installation Manual 7

ENGLISH

Convertible type

• 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.

2. Outdoor unit

• If an awning is built over the unit to prevent

direct sunlight or rain exposure, be careful

that heat radiation from the condenser is

not restricted.

• There should not be any animals or plants

which could be affected by hot air

discharged.

• Ensure the spaces indicated by arrows

from the wall, ceiling, fence or other

obstacles.

More than

20cm

More than eye-level

More than

20cm

More than

20cm

More than

20cm

(Ceiling installation)

(Floor/Wall installation)

More than

50cm

Fence or

obstacles

More than 100cm

More than 50cm

More than

30cm

More than

50cm

Sunroof

8 Air Conditioner

Installation of Indoor, Outdoor Unit

3. Piping length and the elevation

Install the branch pipe so that pipe length and difference between high and low will not exceed

below SPEC.

4. Refrigerant Additional Charging Method

For additional charging method, see below table.

<Ref. Addition charging method>

❈ (L1=Main Pipe, L2~L5 : Branch Pipe

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.

• When installing the branch pipe, direction and angle of installation is not limited.

• Take care so that burrs and foreign material may not enter into the cutting surface when

connecting.

• Connect a gas pipe of Ø25.4 by welding the elbow in the outdoor unit and connect

remaining those by cutting or direct insertion to the diameter of pipe.

• Don’t use the liquid pipe by too bending or twisting.

Pipe Length(m)

Total(Main+Branch)

Main Pipe(L1)

Branch Pipe----Total

Each

In out (h1)

In-In (h2)

L1+L2/L3/L4/L5

Indoor-Indoor_(b)

Spec.

110

Branch

Main (L1)

Single (L1-30)*0.07

Duo (L1-30)*0.07+(L2+L3-20)*A

Trio (L1-30)*0.07+(L2+L3+L4-20)*A

Quartet (L1-30)*0.07+(L2+L3+L4+L5-20)*A

Branch pipe

Ø6.35 0.03

Ø9.52 0.05

Liquid side

Installation Manual 9

ENGLISH

• 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 wall.

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.

• 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.

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.

NOTICE

The indoor unit installation

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

Ceiling board

Level gauge

Ceiling

Use the ventilation fan

for smoke-collecting

hood with sufficient

capacity.

Cooking table

Air conditioner

Take enough

distance

Unit:mm

744 Unit size

658 (Hanging bolt)

6666

790 (Ceiling opening)

572(Hanging bolt)

109

Unit:mm

570 Unit size

450 (Hanging bolt)

7575

600 (Ceiling opening)

521(Hanging bolt)

39.5

Unit:mm

840 Unit size

672 (Hanging bolt)

101.5101.5

875 (Ceiling opening)

785 (Hanging bolt)

The indoor unit installation

1. Cassette type

10 Air Conditioner

Wall

5~7mm

Indoor Outdoor

Set screw of

paper model (4 pieces)

Paper model

for installation

Ceiling board

150mm

Adjust the same height

Ceiling board

Ceiling

Flat washer for M10

(accessory)

Keep the length of the bolt

from the bracket to 40mm

Open the ceiling board

along the outer edge of the

paper model

Flat washer for M10

(accessory)

Hanging bolt

(W3/8 or M10)

Nut

(W3/8 or M10)

Nut

(W3/8 or M10)

Spring washer

(M10)

Air Conditioner body

The Indoor Unit Installation

• 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.

The Indoor Unit Installation

Installation Manual 11

ENGLISH

2. Duct type

• Apply a joint-canvas between the unit and

duct to absorb unnecessary vibration.

• Apply a filter Accessory at air return hole.

• Install the unit leaning to a drainage hole

side as a figure for easy water drainage.

• A place where the unit will be leveled and

that can support the weight of the unit.

• A place where the unit can withstand its

vibration.

• A place where service can be easily

perfor

med.

CASE 1

POSITION OF SUSPENSION BOLT

CASE 2

POSITION OF CONSOLE BOLT

(Unit:mm)

Drainage hole

M10 Nut

M10 SP. washer

M10 washer

X 4

(Local

supply)

X 4

M10 Nut

M10 SP. washer

M10 washer

X 4

(Local

supply)

X 4

(G)

ABCDEF(G)HI

18K/24K

BTU/h

932 880 355 45.5 450 30 87 750 163

Dimension

Capacity

30K/36K

BTU/h

1232 1182 355 45.5 450 30 87 830 186

48K

BTU/h

1292 1230 477 56 590 30 120 1006 294

12 Air Conditioner

The Indoor Unit Installation

• Select and mark the position for fixing

bolts.

• Drill the hole for set anchor on the face

of ceiling.

• Insert the set anchor and washer onto

the suspension bolts for locking the

suspension bolts on the ceiling.

• Mount the suspension bolts to the set

anchor firmly.

• Secure the installation plates onto the

suspension bolts (adjust level roughly)

using nuts, washers and spring

washers

1 Set anchor

Old building New building

2 Plate washer

3 Spring washer

4 Nut

5 Suspension

bolts

• Local supply

Set anchor

Plate washer - M10

Spring washer - M10

Nut - W3/8 or M10

Suspension bolt - W3/8 or M10

CAUTION:

Tighten the nut and bolt top

revent unit falling.

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