LG ATUW36GYLP0 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

Copyright © 2014 - 2020 LG Electronics Inc. All Rights Reserved.

MFL67448519

Rev.01_011620

ENGLISH ESPAÑOL

PORTUGUÊS

TIPS FOR SAVING ENERGY

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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

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.

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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

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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.

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

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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 functionPressure compensation function (for Round Type)

INSTALLATION OF OUTDOOR UNIT

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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

U4

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 Caeestte <Type : 4Way>

INSTALLATION OF OUTDOOR UNIT

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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

U4

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

U4

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

U4

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]

Refrigerant [g/m]

Refrigerant [g/m]

Additional

Additional

Additional

Floor Standing Air Conditioner

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

Gas Liquid Standard Max. Standard Max.

U4

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

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Ceiling Caeestte <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 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

A

B

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

A

B

INSTALLATION OF OUTDOOR UNIT

SW1

DIP–SW01D

6

6

6

Night Silent Operation setting

Applied Model : Free Joint Single Outdoor, Ceiling Caeestte <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

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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