LG A2UQ18GFA0 Installation Manual

INSTALLATION MANUAL

AIR CONDITIONER

www.lg.com

• 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.

TYPE : MULTI

MFL67452303

Rev.01_032019

ENGLISH

TIPS FOR SAVING ENERGY

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• 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 :

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:

TIPS FOR SAVING ENERGY

IMPORTANT SAFETY INSTRUCTIONS

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IMPORTANT SAFETY INSTRUCTIONS

READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE.

Always comply with the following precautions to avoid dangerous situations and ensure peak performance of your product

WARNING

It can result in serious injury or death when the directions are ignored

CAUTION

It can result in minor injury or product damage when the directions are ignored

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.

• 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.

• If the air conditioner is installed in a small room, measures must be taken to prevent the refrigerant concentration from exceeding the safety limit when the refrigerant leaks. Consult the dealer regarding the appropriate measures to prevent the safety limit from being exceeded. Should the refrigerant leak and cause the safety limit to be exceeded, Hazards due to lack of oxygen in the room could result.

Installation

• Do not use a defective or underrated circuit breaker. Use the correctly rated breaker and fuse. 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 by yourself. There is risk of fire or electric shock.

• Always ground the product as per the wiring diagram. Do not connect the ground wire to gas or water pipes lightening rod or telephone ground wire. 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 due to dust , water etc.

• Use the correctly rated breaker or fuse. There is risk of fire or electric shock.

• Do not modify or extend the power cable. If the power cable or cord has scrathes or skin peeled off or deteriorated then it must be replaced. There is risk of fire or electric shock.

• For installation, removal or reinstall , 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. Be sure that the installation area does not deteriorate with age. It may cause product to fall.

• Never install the outdoor unit on a moving base or a place from where it can fall down. The falling outdoor unit can cause damage or injury or even death of a person.

•

In outdoor unit the step-up capacitor supplies high voltage electricity to the electrical components. Be sure to discharge the capacitor completely before conducting the repair work. An charged capacitor can cause electrical shock.

IMPORTANT SAFETY INSTRUCTIONS

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• When installing the unit, use the installation kit provided with the product. Otherwise the unit may fall and cause severe injury.

• Indoor/outdoor wiring connections must be secured tightly and the cable should be routed properly so that there is no force pulling the cable from the connection terminals. Improper or loose connections can cause heat generation or fire.

• Safely dispose off the packing materials. Like screws, nails, batteries, broken things etc after installation or svc and then tear away and throw away the plastic packaging bags. Children may play with them and cause injury.

• Be sure to check the refrigerant to be used. Please read the label on the product. Incorrect refrigerant used can prevent the normal operation of the unit.

Operation

• When the product is soaked (flooded or submerged) in water , contact an Authorized Service Center for repair before using it again. There is risk of fire or eletric shock.

• Be sure to use only those parts which are listed in the svc parts list. Never attempt to modify the equipment. The use of inappropriate parts can cause an electrical shock, excessive heat generation or fire.

• Do not touch , operate, or repair the product with wet hands. Hold the plug by hand when taking out. There is risk of electric shock or fire.

• Do not place a heater or other heating appliances near the power cable. There is risk of fire and electric shock.

• Do not allow water to run into electric parts. Install the unit away from water sources. There is risk of fire, failure of the product, or electric shock.

• Do not store or use or even allow flammable gas or combustibles near the product. There is risk of fire.

• Do not use the product in a tightly closed space for a long time. Perform ventilation regularly. Oxygen deficiency could occur and hence harm your health.

• Do not open the front grille 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.

• If strange sound, smell or smoke comes from product.Immediately turn the breaker off or disconnect the power supply cable. There is risk of electric shock or fire.

• Ventilate the product room from time to time when operating it together with a stove, or heating element etc. Oxygen deficiency can occur and hence harm your health.

• When the product is not to 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 especially kids could step on or fall onto the outdoor unit. This could result in personal injury and product damage.

• 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.

• When flammable gas leaks, turn off the gas and open a window for ventilation befor turning on the product. Do not use the telephone or turn switches on or off. There is risk of explosion or fire.

CAUTION

Installation

• Two or more people must 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.

• Install the drain hose to ensure that the condensed water is drained away properly. A bad connection may cause water leakage.

• Keep level even when installing the product. To avoid vibration or noise.

• Do not install the product where the noise or hot air from the outdoor unit could damage or disturb the neighborhoods. It may cause a problem for your neighbors and hence dispute.

IMPORTANT SAFETY INSTRUCTIONS

ENGLISH

• Always check for gas (refrigerant) leakage after installation or repair of product. Low refrigerant levels may cause failure of product.

• Please install safely at a place that can sufficiently endure the weight of the product. (If the strength is not sufficient, the product may fall and cause injury.)

• This appliance incorporates an earth connection for functional purposes only.

Operation

• 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 or splashing water 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. 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 after cleaning. Clean the filter every two weeks or more often if necessary. A dirty filter reduces the efficiency.

• Do not insert hands or other objects through the air inlet or outlet while the product is operating. There are sharp and moving parts that could cause personal injury.

• Be cautious when unpacking and installing the product. Sharp edges could cause injury.

• If the refrigerant gas leaks during the repair, do not touch the leakaing refrigerant gas. The refrigernat gas can cause frostbite (cold burn).

• Do not tilt the unit when removing or uninstalling it. The condensed water inside can spill.

• Do not mix air or gas other than the specified refrigerant used in the system. If air enters the refrigerant system, an excessively high pressure results, causing equipment damage or injury.

• If the refrigerant gas leaks during the installation, ventilate the area immediately. Otherwise it can be harmfull for your health.

• Dismantling the unit, treatment of the refrigerant oil and eventual parts should be done in accordance with local and national standards.

• Replace the all batteries in the remote control with new ones of the same type. Do not mix old and new batteries or different types of batteries. There is risk of fire or product failure.

• Do not recharge or disassemble the batteries. Do not dispose off batteries in a fire. They may burn or explode.

• If the liquid from the batteries gets onto your skin or clothes, wash it well with clean water. Do not use the remote if the batteries have leaked. The chemicals in batteries could cause burns or other health hazards.

• If you eat the liquid from the batteries, brush your teeth and see doctor. Do not use the remote if the batteries have leaked. The chemicals in batteries could cause burns or other health hazards.

• 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 expose your skin or kids or plants to the cool or hot air draft. This could harm to your health.

• 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, maintaining or repairing the product at an height. Be careful and avoid personal injury.

• This appliance is not intended to be accessible to the general public.

• This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.

- Children should be supervised to ensure that they do not play with the appliance.

• Means for disconnection must be incorporated in the fixed wiring in accordance with the wiring rules.

• If the supply cable is damaged, it must be replaced by a special cable or assembly available from the manufacturer of its service agent.

TABLE OF CONTENTS

ENGLISH

2 TIPS FOR SAVING ENERGY 7 INSTALLATION

8 INSTALLATION OF INDOOR, OUTDOOR UNIT

8 Foundation for Installation 9 Fixing Installation Plate 10 Select the best location 11 Piping length and elevation 12 Refrigerant charge

13 INSTALLATION OF WIRED REMOTE CONTROLLER

15 Wired remote controller installation

16 FLARING WORK AND CONNECTION OF PIPING

16 Flaring work 17 Connection of piping - Indoor 19 Connection of piping - Outdoor 22 Installation 23 Installation of The Main Unit

24 CONNECTING THE CABLE BETWEEN INDOOR UNIT AND

OUTDOOR UNIT

24 Connect the cable to the Indoor unit 25 Connect the cable to the Outdoor unit 27 Connection of Wiring

28 CHECKING THE DRAINAGE AND FORMING THE PIPINGS

28 Checking the Drainage 29 Forming the Piping

30 AIR PURGING AND EVACUATION

30 Checking method 31 Evacuation

32 INSTALLATION PI485 33 TEST RUNNING 34 FUNCTION

34 DIP S/W Setting 35 Forced Cooling Operation 36 Wiring Error Check 36 Saving Power Consumption 37 Night Quiet Mode 38 PCB Display(18 / 26 k Model Only)

39 INSTALLATION GUIDE AT THE SEASIDE

TABLE OF CONTENTS

INSTALLATION

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Figure FigureName

Screw driver

Electric drill

Measuring tape, Knife

Hole core drill

Spanner

Torque wrench

Multi-meter

Hexagonal wrench

Ammeter

Gas-leak detector

Thermometer,

Level

Flaring tool set

Name

Name Quantity Shape

Installation plate 1 EA

Type "A" screw

5 EA

Type "B" screw

2 EA

Type "C" screw

2 EA

Remote control

holder

1 EA

The feature can be changed according a type of model.

SC SB

Installation Parts

Installation Tools

INSTALLATION

INSTALLATION OF INDOOR, OUTDOOR UNIT

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Foundation for Installation

• Check the strength and level of the installation ground so that the unit will not cause any operating vibration or noise after installation.

• Fix the unit securely by means of the foundation bolts. (Prepare 4sets of M12 foundation bolts, nuts and washers each which are available on the market.)

• It is best to screw in the foundation bolts until their length are 20 mm from the foundation surface.

* The feature can be changed according to the type of model.

WARNING

• Be sure to remove the Pallet(Wood Support) of the bottom side of the unit Base Pan before fixing the bolt. It may cause the unstable state of the unit settlement, and may cause freezing of the heat exchanger resulting in abnormal operations.

• Be sure to remove the Pallet(Wood Support) of the bottom side of the unit before welding. Not removing Pallet(Wood Support) causes hazard of fire during welding.

Pallet(Wood Support)

- Remove before Installation

INSTALLATION OF INDOOR, OUTDOOR UNIT

1012

361

Spring washer

Frame

H-Beam

100

Nut

200

Foundation bolt executing method

Anti-vibration

Concrete

base

materials

Four bolt are required 3 thread ridges

200

[Unit:mm]

INSTALLATION OF INDOOR, OUTDOOR UNIT

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Fixing Installation Plate

The wall you select should be strong and solid enough to prevent vibration

1 Mount the installation plate on the wall

with type "A" screws. If mounting the unit on a concrete wall, use anchor bolts.

- Mount the installation plate horizontally by aligning the centerline using a level.

2 Measure the wall and mark the centerline.

It is also important to use caution concerning the location of the installation plate-routing of the wiring to power outlets is through the walls typically. Drilling the hole through the wall for piping connections must be done safely.

Indoor Type

Capacity

(kBtu/h)

Type

Wall mounted

/ART COOL

Mirror

9,12 1

18, 24 2,3

Installation Plate

Type "A" Screws

Installation Plate

Chassis Hook

Type "A" Screws

Installation Plate

Chassis

Hook

Type "A" Screws

Unit Outline

Ø 65

Left rear piping

133

175

Unit Outline

Ø 65

Left rear piping

105

460 567

Unit Outline

Ø 65

Left Rear Piping

184

220

Place a level on raised tab

442 442

Installation Plate

Place a level on raised tab

460 570

Installation Plate

Measuring Tape

Hanger

Place a level on raised tab

Installation plate

217

(Unit : mm)

Ø 65

Right Rear

156

Piping

307

(Unit : mm)

Ø 65

Right rear piping

207

Right rear piping

Chassis

Hook

INSTALLATION OF INDOOR, OUTDOOR UNIT

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Read completely, then follow step by step. You need to select adequate installation location considering the following conditions, and make sure to acquire the consent of the user.

Select the best location

- 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.

- 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.

- Place that can sufficiently endure the weight and vibration of the outdoor unit and where even installation is possible.

Place that has no direct influence of snow or rain.

- Place with no danger of snowfall or icicle drop.

- Place without weak floor or base such as decrepit part of the building or with a lot of snow accumulation.

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.

Install the indoor unit on the wall where the height from the floors more than 2.3 meters.

CAUTION

More than 20 cm

More than

10 cm

More than 2.3 m

More than

10 cm

More than 20 cm

More than

10 cm

More than 2.3 m

More than

10 cm

More than 20 cm

More than

10 cm

More than 2.3 m

More than

10 cm

more than

70 cm

more than

30 cm

more than

30 cm

more than

60 cm

more than 60 cm

more than

70 cm

more than

30 cm

more than 60 cm

more than

30 cm

more than

60 cm

Indoor unit

Outdoor unit

Rooftop Installations

INSTALLATION OF INDOOR, OUTDOOR UNIT

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Piping length and elevation

Multiple Piping Models (Unit: m)

Distributor type Models (Unit: m)

* : A3UQ18GFA0 only , ** : A4UQ28GFA0 Only

40 135 55 80 15 30 15 48 145 55 90 15 30 15 54 145 55 90 15 30 15

Capacity

(kBtu/h)

Total Length

Max Main Pipe

Length (A/B)

Total Branch

Pipe Length

Max Branch Pipe Length

Max Elevation

(h1)

In - In Elevation

(h2)

Capacity(kBtu/h) Total Length Max Length(A/B)

Max Elevation

(h1)

ln-ln Elevation

(h2) 18 30 or 50* 25 15 7.5 26 60 or 70** 25 15 7.5 30 70 25 15 7.5 36 75 25 15 7.5

Capacity is based on standard length and maximum allowance length is on the basis of reliability. If outdoor unit is at higher elevation than the indoor units, after 24 m of vertical height, 1 oil trap is required.

CAUTION

Branch Pipe

Main Pipe

Distributor

Multiple Piping Type Distributor Type

INSTALLATION OF INDOOR, OUTDOOR UNIT

ENGLISH

Distributor type Models (Unit: m)

• Distributor type Models Additional charge (g) = (( Total Main piping Length - Main Standard Length ) x 50 g/m

+ (A Room Branch Length – Standard Length ) x 20 g/m + (B Room Branch Length – Standard Length ) x 20 g/m + (C Room Branch Length – Standard Length ) x 20 g/m +.. )

- CF(Correction Factor) x 100

h CF = Max. number of connectable indoor unit – Total number of connected indoor unit

Refrigerant charge

The calculation of the additional charge should be taken in account for the length of extra pipe.

Multiple Piping Models(Additional Charge)

• Total main pipe(A+B+C) = 30 m

• Each branch pipe a = 10 m b = 8 m c = 5 m d = 3 m e = 10 m

*Additional Charge

=((30-5) x 50 + (10-5) x 20 + (8-5) x 20 + (5-5) x 20 + (3-5) x 20 + (10-5) x 20)

- (7-5) x 100 = 1270 g

Model

Main Piping length Branch piping length

Standard length(m)

Additional

refrigerant(g/m)

Standard length(m)

Additional

refrigerant(g/m)

40 k 5 50 5 20 48 k 5 50 5 20 54 k 5 50 5 20

18 k 26 k 30 k 36 k

~30 X X X

~40 X X X

~50 X X X

~60 - X X

X ~70 - 200 g* X X ~80 - - -

Total Piping Length(m)

Model

* : A4UQ28GFA0 only (X : No addition, - : Not applied)

Ex) Distributor type Model 1 Ø, 40 kBtu/h

abc

7 k 9 k 9 k

18 k

9 k

+ 28 hidden pages