LG ATUW38GYLT1 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.

OUTDOOR UNIT

www.lg.com

MFL67448519

Rev.04_010421

ENGLISH ESPAÑOL

FRANÇAIS

PORTUGUÊS

TIPS FOR SAVING ENERGY

ENGLISH

TIPS FOR SAVING ENERGY

Here are some tips that will help you minimize the power consumption when you use the air conditioner. You can use your air conditioner more efficiently by referring to the instructions below:

• Do not cool excessively indoors. This may be harmful to your health and may consume more electricity.

• Block sunlight with blinds or curtains while you are operating the air conditioner.

• Keep doors or windows closed tightly while you are operating the air conditioner.

• Adjust the direction of the air flow vertically or horizontally to circulate indoor air.

• Speed up the fan to cool or warm indoor air quickly, in a short period of time.

• Open windows regularly for ventilation as the indoor air quality may deteriorate if the air conditioner is used for many hours.

• Clean the air filter once every 2 weeks. Dust and impurities collected in the air filter may block the air flow or weaken the cooling / dehumidifying functions.

For your records

Staple your receipt to this page in case you need it to prove the date of purchase or for warranty purposes. Write the model number and the serial number here:

Model number :

Serial number :

You can find them labeled on the side of each unit.

Dealer’s name :

Date of purchase :

SAFETY INSTRUCTIONS

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.

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.

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.

WARNING

• Installation or repairs made by unqualified persons can result in hazards to you and others.

• Installation work must be performed in accordance with the National Electric Code by qualified and authorized personnel only.

• The information contained in the manual is intended for use by a qualified service technician familiar with safety procedures and equipped with the proper tools and test instruments.

• Failure to carefully read and follow all instructions in this manual can result in equipment malfunction, property damage, personal injury and/or death.

ENGLISH

Installation

• Always perform grounding. Otherwise, it may cause electrical shock.

• Don’t use a power cord, a plug or a loose socket which is damaged. Otherwise, it may cause a fire or electrical shock.

• For installation of the product, always contact the service center or a professional installation agency. Otherwise, it may cause a fire, electrical shock, explosion or injury.

• Securely attach the electrical part cover to the indoor unit and the service panel to the outdoor unit. If the electrical part cover of the indoor unit and the service panel of the outdoor unit are not attached securely, it could result in a fire or electric shock due to dust, water, etc.

• Always install an air leakage breaker and a dedicated switching board. No installation may cause a fire and electrical shock.

• Do not keep or use flammable gases or combustibles near the air conditioner. Otherwise, it may cause a fire or the failure of product.

• Ensure that an installation frame of the outdoor unit is not damaged due to use for a long time. It may cause injury or an accident.

• Do not disassemble or repair the product randomly. It will cause a fire or electrical shock.

• 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.

• Do not install the product at a place that there is concern of falling down. Otherwise, it may result in personal injury.

• Use caution when unpacking and installing. Sharp edges may cause 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.

SAFETY INSTRUCTIONS

ENGLISH

Operation

• Do not share the outlet with other appliances. It will cause an electric shock or a fire due to heat generation.

• Do not use the damaged power cord. Otherwise, it may cause a fire or electrical shock.

• Do not modify or extend the power cord randomly. Otherwise, it may cause a fire or electrical shock.

• Take care so that the power cord may not be pulled during operation. Otherwise, it may cause a fire or electrical shock.

• Unplug the unit if strange sounds, smell, or smoke comes from it. Otherwise, it may cause electrical shock or a fire.

• Keep the flames away. Otherwise, it may cause a fire.

• Take the power plug out if necessary, holding the head of the plug and do not touch it with wet hands. Otherwise, it may cause a fire or electrical shock.

• Do not use the power cord near the heating tools. Otherwise, it may cause a fire and electrical shock.

• Do not open the suction inlet of the indoor/outdoor unit during operation. Otherwise, it may electrical shock and failure.

• Do not allow water to run into electrical parts. Otherwise, it may cause the failure of machine or electrical shock.

• Hold the plug by the head when taking it out. It may cause electric shock and damage.

• Never touch the metal parts of the unit when removing the filter. They are sharp and may cause injury.

• Do not step on the indoor/outdoor unit and do not put anything on it. It may cause an injury through dropping of the unit or falling down.

• Do not place a heavy object on the power cord. Otherwise, it may cause a fire or electrical shock.

• When the product is submerged into water, always contact the service center. Otherwise, it may cause a fire or electrical shock.

• Take care so that children may not step on the outdoor unit. Otherwise, children may be seriously injured due to falling down.

CAUTION

Installation

• Install the drain hose to ensure that drain can be securely done. Otherwise, it may cause water leakage.

• Install the product so that the noise or hot wind from the outdoor unit may not cause any damage to the neighbors. Otherwise, it may cause dispute with the neighbors.

• Always inspect gas leakage after the installation and repair of product. Otherwise, it may cause the failure of product.

• Keep level parallel in installing the product. Otherwise, it may cause vibration or water leakage.

• Do not install the unit in potentially explosive atmospheres.

Operation

• Avoid excessive cooling and perform ventilation sometimes. Otherwise, it may do harm to your health.

• Use a soft cloth to clean. Do not use wax, thinner, or a strong detergent. The appearance of the air conditioner may deteriorate, change color, or develop surface flaws.

• Do not use an appliance for special purposes such as preserving animals vegetables, precision machine, or art articles. Otherwise, it may damage your properties.

• Do not place obstacles around the flow inlet or outlet. Otherwise, it may cause the failure of appliance or an accident.

TABLE OF CONTENTS

2 TIPS FOR SAVING ENERGY

3 SAFETY INSTRUCTIONS

6 INSTALLATION OF OUTDOOR UNIT

9 Night Silent Operation setting

10 WIRING CONNECTION

10 Electrical Wiring 11 Connecting Cables between Indoor Unit and Outdoor Unit 13 Connecting the cable to Outdoor Unit

14 CONNECTING PIPES

14 Preparation of Piping 15 Connecting the pipes to the Outdoor unit 16 Forming the piping 17 Plumbing materials and storage methods 18 Nitrogen substitution method

TABLE OF CONTENTS

ENGLISH

19 LEAKAGE TEST AND EVACUATION

19 Preparation 19 Leakage test 20 Evacuation

21 TEST RUNNING

23 FUNCTION

23 Forced Cooling Operation

24 SELF-DIAGNOSIS FUNCTION

24 Error Indicator (Outdoor)

26 INSTALLATION GUIDE AT THE SEASIDE

27 CONVENIENT FUNCTIONS

27 Pressure compensation function (for Round Type)

INSTALLATION OF OUTDOOR UNIT

ENGLISH

INSTALLATION OF OUTDOOR UNIT

Installation Places

- 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.

- Ensure that the spaces indicated by arrows around front, back and side of the unit.

- Do not place animals and plants in the path of the warm air.

- Take the air conditioner weight into account and select a place where noise and vibration are

minimum.

- Select a place so that the warm air and noise from the air conditioner do not disturb neighbors.

Unit : mm

More than 300 mm

Sunroof

Fence or

obstacles

More than 300 mm

More than 600 mm

More than 700 mm

Piping length and the elevation

Free Joint Single Outdoor

CHASSIS

CAPACITY

[Btu/h]

UL2 18 K Ø12.7(1/2) Ø6.35(1/4) 5 30 5 15 20

U24A 24 K Ø15.88(5/8) Ø9.52(3/8) 5 50 5 30 20

U5 54 K Ø19.05(3/4) Ø9.52(3/8) 5 50 5 30 20

36 K Ø15.88(5/9) Ø9.52(3/8) 5 50 5 30 20

48 K Ø19.05(3/4) Ø9.52(3/8) 5 50 5 30 20

Pipe Size [mm (inch)] Length A [m] Elevation B [m]

Gas Liquid Standard Max. Standard Max.

Refrigerant [g/m]

Additional

Ceiling Cassette <Type : 4Way>

INSTALLATION OF OUTDOOR UNIT

ENGLISH

CHASSIS

Ceiling Suspended Air conditioner

CHASSIS

Ceiling Concealed Duct Ceiling Concealed Duct – Low Static

CHASSIS

CAPACITY

[Btu/h]

UL2 18 K Ø12.7(1/2) Ø6.35(1/4) 5 30 5 15 20

U24A 24 K Ø15.88(5/8) Ø9.52(3/8) 5 50 5 30 20

U3 54 K Ø19.05(3/4) Ø9.52(3/8) 5 50 5 30 20

UL2 18 K Ø12.7(1/2) Ø6.35(1/4) 5 30 5 15 20

U24A 24 K Ø15.88(5/8) Ø9.52(3/8) 5 50 5 30 20

U3 54 K Ø19.05(3/4) Ø9.52(3/8) 5 50 5 30 20

UL2 18 K Ø12.7(1/2) Ø6.35(1/4) 5 30 5 15 20

U24A 24 K Ø15.88(5/8) Ø9.52(3/8) 5 50 5 30 20

U3 54 K Ø19.05(3/4) Ø9.52(3/8) 5 50 5 30 20

36 K Ø15.88(5/9) Ø9.52(3/8) 5 50 5 30 20

48 K Ø19.05(3/4) Ø9.52(3/8) 5 50 5 30 20

CAPACITY

[Btu/h]

36 K Ø15.88(5/9) Ø9.52(3/8) 5 50 5 30 20

48 K Ø19.05(3/4) Ø9.52(3/8) 5 50 5 30 20

CAPACITY

[Btu/h]

36 K Ø15.88(5/9) Ø9.52(3/8) 5 50 5 30 20

48 K Ø19.05(3/4) Ø9.52(3/8) 5 50 5 30 20

Pipe Size [mm (inch)] Length A [m] Elevation B [m]

Gas Liquid Standard Max. Standard Max.

Pipe Size [mm (inch)] Length A [m] Elevation B [m]

Gas Liquid Standard Max. Standard Max.

Pipe Size [mm (inch)] Length A [m] Elevation B [m]

Gas Liquid Standard Max. Standard Max.

Refrigerant [g/m]

Additional

Floor Standing Air Conditioner

Pipe Size [mm (inch)] Length A [m] Elevation B [m]

Gas Liquid Standard Max. Standard Max.

CAPACITY

[Btu/h]

36 K Ø15.88(5/9) Ø9.52(3/8) 5 50 5 30 20

48 K Ø19.05(3/4) Ø9.52(3/8) 5 50 5 30 20

CHASSIS

If installed tube is shorter than 5 m, additional charging is not necessary. Additional Refrigerant = (A - 5) x Additional refrigerant (g)

Additional

Refrigerant [g/m]

INSTALLATION OF OUTDOOR UNIT

ENGLISH

Ceiling Cassette <Type : Round>

CHASSIS

If installed tube is shorter than 7.5 m, additional charging is not necessary. Additional Refrigerant = (A - 7.5) x Additional refrigerant (g)

CAPACITY

[Btu/h]

U4 36 K Ø15.88(5/9) Ø9.52(3/8) 7.5 50 5 30 40

U3 48, 50 K Ø19.05(3/4) Ø9.52(3/8) 7.5 75 5 30 40

Pipe Size [mm (inch)] Length A [m] Elevation B [m]

Gas Liquid Standard Max. Standard Max.

Additional

Refrigerant [g/m]

Indoor unit

CAUTION

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

• Improper refrigerant charge may result in abnormal cycle.

Outdoor unit

Indoor unit

Outdoor unit

INSTALLATION OF OUTDOOR UNIT

SW1

DIP–SW01D

Night Silent Operation setting

Applied Model : Free Joint Single Outdoor, Ceiling Cassette <Type : 4Way>, Ceiling Suspended Air conditioner, Ceiling Concealed Duct,Floor Standing Air Conditioner

- Open the Side panel or Top Cover of outdoor unit.

- Set the SW1 or DIP-SW01D.

Step 1

Step 2

ENGLISH

U4: 36 kBtu/h

- Close the Side panel or Top Cover.

WARNING

• When you set the DIP switch, you should turn off the circuit breaker or shut the power source of the product down.

CAUTION

• Unless the applicable DIP switch is set properly, the product may not work.

• If you want to set a specific function, request that the installer sets the DIP switch appropriately during installation.

U4: 48 kBtu/h U3: 54 kBtu/h U5: 54 kBtu/h

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