LG MFL68686515 User manual

Ceiling Cassette

Original instruction

[Representative] LG Electronics Inc. EU Representative : LG Electronics European Shared

Service Center B.V. Krijgsman 1, 1186 DM Amstelveen, The Netherlands

[Manufacturer] LG Electronics Inc. Changwon 2nd factory 84, Wanam-ro, Seongsan-gu,

Changwon-si, Gyeongsangnam-do, KOREA

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.

INSTALLATION MANUAL

AIR

CONDITIONER

www.lg.com

MFL68686515

Rev.03_062520

РУССКИЙ ЯЗЫК

УКРАÏНСЬКА

ҚАЗАҚ ТІЛІ

БЕЛАРУСКАЯ МОВА

OʻZBEK TILI

BAHASA INDONESIA

Tiếng Việt TÜRKÇE

ENGLISH ITALIANO ESPAÑOL

FRANÇAIS

DEUTSCH

ΕΛΛΗΝΙΚΆ

ČEŠTINA

NEDERLANDS

POLSKI

LIMBA ROMÂNĂ

2Indoor Unit

Table of contents

3 INSTALLATION PARTS

4 SAFETY INSTRUCTIONS

12 INSTALLATION

12 Selection of the best location

14 Ceiling dimension and hanging bolt location

17 Wiring Connection

20 Installation of Decoration Panel (4 Way)

21 Installation of Decoration Panel (2 Way)

22 Installation of Decoration Panel (1 Way)

23 Drain Piping

24 Ceiling Height Selection

25 DIP Switch Setting

26 Group Control Setting

31 Model Designation

31 Airborne Noise Emission

31 Limiting concentration

TABLE OF CONTENTS

Installation Manual 3

Installation Parts

ENGLISH

Air filter

Air

Intake

Air Outlet Wired Remote Controller

(Accessory)

Air

Intake

Air Outlet Wired Remote Controller

(Accessory)

Air filter

Wired Remote Controller

(Accessory) Wired Remote Controller

(Accessory)

Air

Intake Air

Intake

Air Outlet

Air Intake

Wired Remote Controller

(Accessory)

Air filter

Air

Intake

Wired Remote Controller

(Accessory)

Air filter

Air Outlet

Installation Parts

Name

Quantity

Shape

Clamp metal

2 EA

Drain hose

1 EA

for gas pipe

for liquid pipe

Insulation for

fitting

1 SET8 EA

Washer for

hanging Bracket Clamp

(Tie Wrap)

4 EA

• Screws for fixing panels are attached to decoration panel.

Installation Tool

4Indoor Unit

Safety Instructions

The following symbols are displayed on indoor and outdoor units.

Installation

• Compliance with national gas regulations shall be observed.

• Do not use a defective or underrated circuit breaker. Use

this appliance on a dedicated circuit.

- There is risk of fire or electric shock.

WARNING

Read the precautions in

this manual carefully

before operating the unit.

This appliance is filled

with flammable refrigerant

(for R32)

This symbol indicates that

the Operation Manual

should be read carefully.

This symbol indicates that

a service personnel

should be handling this

equipment with reference

to the Installation Manual.

The following safety guidelines are intended to prevent

unforeseen risks or damage from unsafe or incorrect

operation of the appliance.

The guidelines are separated into ‘WARNING’ and

‘CAUTION’ as described below.

WARNING

This indicates that the failure to follow the instructions can

cause serious injury or death.

CAUTION

This indicates that the failure to follow the instructions can

cause the minor injury or damage to the product.

This symbol is displayed to indicate matters and

operations that can cause risk.

Read the part with this symbol carefully and follow the

instructions in order to avoid risk.

Installation Manual 5

Safety Instructions

ENGLISH

• 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.

• 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 modify or extend the power cable.

- There is risk of fire or electric shock.

• Do not install, remove, or re-install 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.

• 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 turn on the breaker or power under condition that

front panel, cabinet, top cover, control box cover are

removed or opened.

- Otherwise, it may cause fire, electric shock, explosion or

death.

6Indoor Unit

Safety Instructions

• 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.

• Have all electric work done by a licensed electrician

according to "Electric Facility Engineering Standard" and

"Interior Wire Regulations" and the instructions given in this

manual and always use a special circuit.

- If the power source capacity is inadequate or electric work

is performed improperly, electric shock or fire may result.

• Always Install a dedicated circuit and breaker.

- Improper wiring or installation may cause fire or electric

shock.

• The appliance shall be stored in a well-ventilated area

where the room size corresponds to the room area as

specified for operation. (for R32)

• The appliance shall be stored in a room without continuously

operating ignition sources (for example: open flames, an

operating gas appliance or an operating electric heater.)

• Keep any required ventilation openings clear of obstruction.

• Mechanical connections shall be accessible for maintenance

purposes.

• To prevent the mixing of different types of refrigerants, be

sure to check the type of refrigerant used in the outdoor unit.

Operation

• 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.

• Take care to ensure that power cable could not be pulled out

or damaged during operation.

- There is risk of fire or electric shock.

• Do not place anything on the power cable.

- There is risk of fire or electric shock.

Installation Manual 7

Safety Instructions

ENGLISH

• Do not plug or unplug the power supply plug during

operation.

- There is risk of fire or electric shock.

• Do not touch(operate) the product with wet hands.

- There is risk of fire or electrical shock.

• Do not place a heater or other appliances near the power

cable.

- There is risk of fire and electric shock.

• Do not allow water to run into electric parts.

- 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.

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

time.

- Oxygen deficiency could occur.

• When flammable gas leaks, turn off the gas and open a

window for ventilation before turn the product on.

- Do not use the telephone or turn switches on or off. There

is risk of explosion or fire.

• If strange sounds, smell or smoke comes from product. Turn

the breaker off or disconnect the power supply cable.

- There is risk of electric shock or fire.

• 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 product during operation.

(Do not touch the electrostatic filter, if the unit is so

equipped.)

- There is risk of physical injury, electric shock, or product

failure.

• When the product is soaked (flooded or submerged),

contact an Authorized Service Center.

- There is risk of fire or electric shock.

8Indoor Unit

Safety Instructions

• Be cautious that water could not enter the product.

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

• Ventilate the product from time to time when operating it

together with a stove, etc.

- There is risk of fire or electric shock.

• 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.

• When mechanical connectors are reused indoors, sealing

parts shall be renewed. (for R32)

• When flared joints are reused indoors, the flare part shall be

re-fabricated. (for R32)

• Periodic ( more than once/year ) cleaning of the dust or salt

particles stuck on the heat exchanger by using water.

• Do not use means to accelerate the defrosting process or to

clean, other than those recommended by the manufacturer.

• Do not pierce or burn refrigerant cycle part.

• Be aware that refrigerants may not contain an odour.

Installation

• 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.

CAUTION

Installation Manual 9

Safety Instructions

ENGLISH

• 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.

• Any person who is involved with working on or breaking into

a refrigerant circuit should hold a current valid certificate

from an industry-accredited assessment authority, which

authorises their competence to handle refrigerants safely in

accordance with an industry recognised assessment

specification. (for R32)

• The appliance shall be stored so as to prevent mechanical

damage from occurring.

• Refrigerant tubing shall be protected or enclosed to avoid

damage.

• Flexible refrigerant connectors (such as connecting lines

between the indoor and outdoor unit) that may be displaced

during normal operations shall be protected against

mechanical damage.

• The installation of pipe-work shall be kept to a minimum.

• Pipe-work shall be protected from physical damage.

• A brazed, welded, or mechanical connection shall be made

before opening the valves to permit refrigerant to flow

between the refrigerating system parts.

• Dismantling the unit, treatment of the refrigerant oil and

eventual parts should be done in accordance with local and

national standards.

• Means for disconnection must be incorporated in the fixed

wiring in accordance with the wiring rules.

10 Indoor Unit

Safety Instructions

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 use harsh detergents,

solvents, etc.

- There is risk of fire, electric shock, or damage to the plastic

parts of the product.

• Do not touch the metal parts of the product when removing

the air filter. They are very sharp!

- There is risk of personal injury.

• Do not step on or put anything on the product. (outdoor

units)

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

• 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.

• 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.

• Do not drink the water drained from the product.

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

• Use a firm stool or ladder when cleaning or maintaining the

product.

- Be careful and avoid personal injury.

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