LG L5UC728FA2 Manual de usuario

www.lg.com

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.

P/NO : 3828A20567K

2Multi Type Air Conditioner

Multi Type Air Conditioner Installation Manual

TABLE OF CONTENTS

Installation Parts Provided ........................................3

Safety Precautions ......................................................4

Installation of Indoor, Outdoor Unit...........................7

Wall mounted Type................................................11

Ceiling Concealed Duct Type................................15

Ceiling Cassette Type ...........................................21

Flaring work and connection of piping...................31

Connecting the Cable between Indoor Unit and

Outdoor Unit ..............................................................44

Checking the Drainage, Forming the Pipings

and Long pipe Setting ..............................................46

Air Purging and Evacuation .....................................48

Test running...............................................................50

Optional Operation - Ceiling Concealed Duct Type

..........51

Optional Operation - Ceiling Cassette Type ...........55

Combination indoor units ........................................58

Installation guide at the seaside..............................59

❏Level gauge

❏Screw driver

❏Electric drill

❏Hole core drill (ø70mm)

❏Horizontal meter

❏Flaring tool set

❏Specified torque wrenches

1.8kg.m, 4.2kg.m, 5.5kg.m, 6.6kg.m

(different depending on model No.)

❏Spanner .................Half union

❏A glass of water

❏Screw driver

❏Hexagonal wrench(4mm)

❏Gas-leak detector

❏Vacuum pump

❏Gauge manifold

❏Owner's manual

❏Thermometer

❏Holder Remote Control

Installation Requirements Required Tools

Installation Parts Provided

Installation Manual 3

Installation Parts Provided

Outdoor Unit

Wall Mounted Type

more than

25cm

more than

25cm

more than

75cm

more than

25cm

Air Outlet

Control cover

Installation plate

Type "B" screws

Type "A" screw (6 EA) Type "A" screw (8 EA)

Holder Remote Control

more than

25cm

more than

25cm

more than

75cm

more than

25cm

Air Outlet

Connection pipe

Drain hose

Connecting wire

Control cover

4Multi Type Air Conditioner

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.

■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.

Be sure not to do.

Be sure to follow the instruction.

Safety Precautions

WARNING

■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.

Installation Manual 5

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.

Use a vacuum pump or Inert (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.

nOperation

6Multi Type Air Conditioner

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.

Don't let people to lift and transport the

product. (Use fork lift)

•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

■Installation

Installation Manual 7

Installation of Indoor, Outdoor Unit

Read completely, then follow step by step.

1. Indoor unit

•Do not have any heat or steam near the unit.

•Select a place where there are no obstacles in

front of the unit.

•Make sure that condensation drainage can be

conveniently routed away.

•Do not install near a doorway.

•Ensure the spaces indicated by arrows from

the wall, ceiling, fence or other obstacles.

•Use a stud finder to locate studs to prevent

unnecessary damage to the wall.

Install the air conditioner in the location that

satisfies the following conditions.

•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 beleveled.

•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

Select the best location

600

Top view

(unit: mm)

Front view

Front

Inspection Hole

(600X600)

Inspection Hole

(600X600)

Control box

1000

More than 20cm

More than

10cm

More than 2.3m

More than

10cm

More than 20cm

More than

10cm

More than 2.3m

More than

10cm

CAUTION: Install the indoor unit

on the wall where the height from

the floors more than 2.3 meters.

Wall mounted Type

Ceiling Concealed Duct Type

8Multi Type Air Conditioner

Installation of Indoor, Outdoor Unit

2. Outdoor unit

1. If an awning is built over the unit to prevent

direct sunlight or rain exposure, make sure

that heat radiation from the condenser is not

restricted.

2. Ensure that the spaces indicated by arrows

around front, back and side of the unit.

3. Do not place animals and plants in the path

of the warm air.

4. Take the air conditioner weight into account

and select a place where noise and vibration

are minimum.

5. Select a place so that the warm air and noise

from the air conditioner do not disturb

neighbors.

Rooftop Installations:

If the outdoor unit is installed on a roof

structure, be sure to level the unit. Ensure the

roof structure and anchoring method are

adequate for the unit location. Consult local

codes regarding rooftop mounting.

•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.

Unit:mm

Ceiling

Ceiling Board

20 or more

1500

or more

500 or

Floor

Ceiling Cassette Type

more than

75 cm

more than

25 cm

more than

25 cm

more than

25 cm

more than

75cm

more than

25cm

more than

25cm

Installation of Indoor, Outdoor Unit

Installation Manual 9

Piping length and elevation table.

Piping length and elevation

60 A = 30 30 15 h1=30 10

50 B = 50 - - h2=30 10

30 B = 30 - - h2=30 10

110 A = 50 60 15 h1=45 10

50 B = 50 - - h2=45 10

45 A = 30 15 15 h1=30 10

50 B = 50 - - h2=30 10

60 A = 30 30 15 h1=30 10

50 A=50 - - h1=30 10

110 A=50 60 15 h1=45 10

50 B=50 - - h2=45 10

110 B=50 60 15 h2=45 10

Total Length Max Main Pipe

Length (A/B)

Total Branch

Pipe Length

Max Branch

Pipe Length

Max Elevation

(h1/h2)

Indoor - Indoor

Elevation (h3)

Branch Pipe

Main Pipe

Distributor

CAUTION: Capacity is based

on standard length and

maximum allowance length

is on the basis of reliability.

When outdoor unit is at

higher elevation than the

indoor units, after 24m of

vertical height, 1 oil trap is

required.

Model

With Distributor

L5UC7

28FA2

L5UC7

28FA3

L6UH7

28FA2

L8UC1

508FA1

L8UC10

08FA2

L8UH10

08FA2

L8UC10

08FA3

None Distributor

A-Circuit

None Distributor

A-Circuit

With Distributor

None Distributor

B-Circuit

None Distributor

B-Circuit 50 A = 50 - - h1=45 10

60 B = 30 30 15 h2=30 10

With Distributor

A-Circuit

With Distributor

B-Circuit

None Distributor

A-Circuit

10 Multi Type Air Conditioner

Installation of Indoor, Outdoor Unit

Flared connection (Union)

Flared connection

(Service valve, Ball valve)

Use a seemliness tube

Factory charged

Indoor

Outdoor

Perform the work according to the Service Manual or Installation Guide.

•Use two spanners when connecting the

refrigerant pipe to the unit.

•Make a bend with a radius as large as

possible.

•Perform air purge with R22 or vacuum drying.

•When piping work is finished, check all joints.

■

Add refrigerant if piping over 7.5m as shown

below, non distributor type.

■Add refrigerant if piping over 5m (main pipe),

7.5m (branch pipe) as shown below, distributor

type.

24 kBtu/h 15.88 6.35 30g/m

48/60 kBtu/h 19.05 9.52 50g/m

90 kBtu/h 25.4 12.7 120g/m

12/18 kBtu/h 12.7 6.35 20g/m

24/30/36 kBtu/h

15.88 6.35 30g/m

48 kBtu/h 19.05 9.52 50g/m

Main Pipe

Branch Pipe

Additional

Refrigerant

Pipe

Gas Liquid

Refrigerant piping

Table. Distributor type

12/18 kBtu/h 12.7 6.35 20g/m

24/30/36 kBtu/h

15.88 6.35 30g/m

48 kBtu/h 19.05 9.52 50g/m

Branch Pipe

Additional

Refrigerant

Pipe

Gas Liquid

Table. Non Distributor type

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