LG LHN428HV Installation instructions

INSTALLATION MANUAL

AIR CONDITIONER

ENGLISH

FRANÇAIS

ESPAÑOL

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.

Ceilling Concealed Duct

www.lghvac.com

MFL67206507

Rev.04_061220

www.lg.com

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 for 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 on a label on the side of each unit.

Dealer’s name :

Date of purchase :

SAFETY INSTRUCTIONS

ENGLISH

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 of all field wiring and components MUST conform with local building codes or, in the absence of local codes, with the National Electrical Code 70 and the National Building Construction and Safety Code or Canadian Electrical code and National Building Code of Canada.

• 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.

Installation

• Always perform grounding. - Otherwise, it may cause 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.

• 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.

• 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.

SAFETY INSTRUCTIONS

ENGLISH

• Consult your lacal dealer regarding what to do in case of refrigerant leakage.

When the air conditioner is to be installed in a small room, it is necessary to take proper measures so that the amount of any leaked refrigerant does not exceed the concentration limit in the event of a leakage. Otherwise, this may lead to an accident due to oxygen depletion.

• Carry out the specified installation work after taking into account earthquakes.

Failure to do so during installation work may result in the unit falling and causing accidents.

• Make sure that a separate power supply circuit is provided for this unit and that all electrical work is carried out by

qualified personnel according to local laws and regulations and this installation manual. An insufficient power supply capacity or improper electrical construction may lead to electric shocks or fire.

• Be sure to switch off the unit before touching any electrical parts.

• Make sure that all wiring is secured, the specified wires are used, and that there is no strain on the terminal

connections or wires.

• If refrigerant gas leaks during installation, ventilate the area immediately.

Toxic gas may be produced if the refrigerant gas comes into contact with fire.

• Make sure to be materials in a compartment handling air for circulation through a duct supplying only one room.

Operation

• 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 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.

• 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.

• 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 PARTS 7 INSTALLATION

8 Ceiling dimension and hanging bolt location 9 Indoor Unit Installation 11 Air Filter 12 Checking the Drainage 13 Indoor Unit Drain Piping 14 Combination indoor units 15 Flaring work 16 Connection of piping - Indoor, Outdoor, BD Unit 17 Plumbing materials and storage methods 19 Heat insulation 19 Wiring Connection 19 Connection method of the connecting cable(Example)

22 REMOTE CONTROLLER INSTALLATION

24 Wired remote controller installation

TABLE OF CONTENTS

ENGLISH

25 HOW TO SET E.S.P?

25 Installer Setting - E.S.P.

27 SELF-DIAGNOSIS FUNCTION 27 DIP SWITCH SETTING

INSTALLATION PARTS

Air outlet vents

Air ﬁlters

Control box

Air intake vents

Remote Controller

Air inlet vents

Air outlet vents

(Accessory)

ENGLISH

INSTALLATION PARTS

Name Drain hose Clamp metal

Quantity 1 EA 2 EA 8 EA 4 EA 1 set

Shape

* Screws for fixing panels are attached to decoration panel.

Washer for

hanging bracket

Clamp

(Tie Wrap)

Insulation for

fitting

for gas pipe

for liquid pipe

INSTALLATION

A(Min)

Ceiling

Service Space

B(Min)

H=20 (25/32) or more

• Suitable dimension "H" is necessary to get a slope to drain as shown in the ﬁgure

Side view [Unit: mm(inch)]

Air outlet

Inspection hole

600 x 600

(23-5/8 x 23-5/8)

Control box

600

(23-5/8)

600

(23-5/8)

Top view [Unit: mm(inch)]

Air outlet

INSTALLATION

Indoor unit

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 be leveled.

- 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

Confirm the positional relationship between the unit and suspension bolts.

- Installation the ceiling opening to clean the filter or service under the product.

WARNING

Make sure to be materials in a compartment handling air for circulation through a duct supplying only one room.

[Unit:mm(inch)]

Capacity (kBtu/h)

12/18

24 36

42/48

A B 800 (31-1/2) 800 (31-1/2) 800 (31-1/2) 1 000 (39-3/8) 800 (31-1/2) 1000 (39-3/8) 800 (31-1/2) 1400 (55-1/8) 800 (31-1/2) 1400 (55-1/8)

ENGLISH

Top view

Inspection hole

600(23-5/8) X 600(23-5/8)

Control box

600(23-5/8) 600(23-5/8)

Front view

(unit: mm(inch))

1 000

(39-3/8)

Front

20(25/32) or more

INSTALLATION

Drainage hole

ENGLISH

Ceiling dimension and hanging bolt location

Installation of Unit Install the unit above the ceiling correctly.

POSITION OF SUSPENSION BOLT

- Apply a joint-canvas between the unit and duct to absorb unnecessary vibration.

- Apply a filter Accessory at air return hole.

Capacity (kBtu/h)

Dimension

A B C D E F G H

9 k 12 k / 18 k 24 k 36 k 42 k / 48 k

733 (28-17/20) 933 (36-37/50) 933.4 (36-3/4) 1 283.4 (50-17/32) 1 283.4 (50-17/32)

772 (30-2/5) 972 (38-13/50) 971.6 (38-1/4) 1 321.6 (52-1/32) 1 321.6 (52-1/32)

628 (24-18/25) 628 (24-18/25) 619.2 (24-3/8) 619.2 (24-3/8) 619.2 (24-3/8) 700 (27-11/20) 700 (27-11/20) 700 (27-9/16) 700 (27-9/16) 700 (27-9/16)

36 (1-2/5) 36 (1-2/5) 30 (1-3/16) 30 (1-3/16) 30 (1-3/16)

190 (7-12/25) 190 (7-12/25) 270 (10-5/8) 270 (10-5/8) 360 (14-3/16)

20 (25/32) 20 (25/32) 15.2 (19/32) 15.2 (19/32) 15.2 (19/32)

660 (25-49/50) 860 (33-17/20) 858 (33-25/32) 1 208 (47-9/16) 1 208 (47-9/16)

155 (6-1/10) 155 (6-1/10) 201.4 (7-15/16) 201.4 (7-15/16) 291.4 (11-15/32)

700 (27-11/20) 900 (35-11/25) 900 (35-7/16) 1 250 (49-7/32) 1 250 (49-7/32)

[Unit:mm(inch)]

h Install the unit leaning to a drainage hole side as a figure for easy water drainage.

INSTALLATION

M10 Nut

M10 washer

X 4

M10 Nut

M10 washer

X 4

X 8

1 Set anchor

Old building New building

2 Plate washer 3 Spring washer

4 Nut

5 Suspension bolts

ENGLISH

POSITION OF CONSOLE BOLT

- A place where the unit will be leveled and that can support the weight of the unit.

- A place where the unit can withstand its vibration.

- A place where service can be easily performed.

Indoor Unit Installation

- Select and mark the position for fixing bolts.

- Drill the hole for set anchor on the face of ceiling.

- Insert the set anchor and washer onto the suspension bolts for locking the suspension bolts on the ceiling.

- Mount the suspension bolts to the set anchor firmly.

- Secure the installation plates onto the suspension bolts (adjust level roughly) using nuts, washers and spring washers.

• Local supply

① Set anchor ② Plate washer - M10 ③ Spring washer - M10 ④ Nut - W3/8 or M10 ⑤ Suspension bolt - W3/8 or M10

CAUTION

Tighten the nut and bolt to prevent unit falling.

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