LG ABNW50LM3S1 INSTALLATION MANUAL

P/NO : MFL67939925

INSTALLATION MANUAL

Ceiling Concealed Duct

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.

ENGLISH

FRANÇAIS

TIPS FOR SAVING ENERGY

2

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 :

IMPORTANT SAFETY INSTRUCTIONS

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 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 earth leakage circuit 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.

• 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.

3

ENGLISH

4

ENGLISH

• Make sure that a sekparate power supply circuit is provided for this unit and that all electrical work is

• 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

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

Operation

• Turn off the unit if strange sounds, smell, or smoke comes from it. - Otherwise, it may cause

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

• Do not touch the power cable with wet hands when it taking out . – Otherwise, it may cause a fire

• Do not open the suction inlet of the indoor/outdoor unit during operation. - Otherwise, it may

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

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

• Do not step on the indoor/outdoor unit and do not put anything on it. - It may cause an injury through

• When the product is submerged into water, always contact the service center. - Otherwise, it may

• Take care so that children may not step on the outdoor unit. - Otherwise, children may be seriously

IMPORTANT SAFETY INSTRUCTIONS

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.

terminal connections or wires.

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

electrical shock or a fire.

or electrical shock.

electrical shock and failure.

electrical shock.

injury.

dropping of the unit or falling down.

cause a fire or electrical shock.

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.

• Do not turn on the breaker or power under condition that front panel, cabinet, top cover, control box
cover are removed or opened.

TABLE OF CONTENTS

TABLE OF CONTENTS

5

ENGLISH

2 TIPS FOR SAVING

ENERGY

3 IMPORTANT SAFETY

INSTRUCTIONS

6 INTRODUCTION

6 Features

7 INSTALLATION OF

INDOOR

7 Selection of the best location

7 Installation of Unit

10 Indoor Unit Drain Piping

10 Drain test

11 Thermal insulator

11 Wiring Connection

13 INSTALLATION

INSTRUCTION

15 Remote controller installation

16 Group control

17 Installer Setting - How to enter installer

setting mode

18 Installer Setting - Test Run Mode

19 Installer Setting - Setting Address of

Central Control

20 Installer Setting -E.S.P.

21 Installer Setting -Thermistor

22 Installer Setting-Remote Controller

Master/Slave Setup

23 Installer Setting-Celsius / Fahrenheit

Switching

24 Installer Setting - Static Pressure Step

Setting

27 DIP SWITCH SETTING

INTRODUCTION

6

ENGLISH

INTRODUCTION

Features

Air inlet vents

Air outlet
vents

FAN

SPEED

TEMP

OPER
MODE

Remote
Controller

INSTALLATION OF INDOOR

INSTALLATION OF INDOOR

7

ENGLISH

Selection of the best location

- 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 allow easy water
drainage.(Suitable dimension “H” is neces­sary to get a slope to drain as figure.)

- 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.

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

Top view

Unit: mm

Air inlet vents

Inspection hole
600 x 600

Control box

Installation of Unit

Install the unit above the ceiling correctly.

CASE 1

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.

E

C

D

J
A

B

I

F

H

Drain hole

G

Front view

Unit: mm

600

Air outlet vents

1000

Front

600

20 or more

(Unit:mm)

Dimension

Capacity
(kw)

5 / 7 / 8 933.4 971.6 619.2 679 35 270 4.5 857 200 900

ABCDEFGHIJ

10

14 / 16

1283.4 1321.6

1283.4 1321.6

619.2 679 35 270 4.5 1206 200 1250

619.2 679 35 360 4.5 1206 291 1250

8

1 Set anchor

Old building New building

2 Plate washer
3 Spring washer

4 Nut

5 Suspension
bolts

ENGLISH

INSTALLATION OF INDOOR

CASE 2

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

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.

M10 Nut
M10 SP. washer
M10 washer

M10 washer
M10 SP. washer
M10 Nut

X 4
X 4
X 4

X 4
X 4
X 4

(Local
supply)

(Local
supply)

- 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.

CAUTION

!

Tighten the nut and bolt to prevent unit
falling.

INSTALLATION OF INDOOR

Drainage hole

Drainage hole

CORRECT

INCORRECT

1/100~1/50

Ceiling

CAUTION

!

• Install declination of the indoor unit is very important for the drain of the duct type air condi­tioner.

• Minimum thickness of the insulation for the connecting pipe shall be 5mm.

Front of view

• The unit must be declined to the drain hose connected when finished installation.

Caution for gradient of unit and drain piping

Lay the drain hose with a downward inclination so water will drain out.

9

ENGLISH

• Always lay the drain withdownward

inclination (1/100 to 1/50).
Prevent any upward flow or reverse flow
in any par t.

• 10 mm or thicker formed thermal insulator

shall always be provided for the drain
pipe.

• Upward routing not

CORRECT

• Install the P-Trap (or U-Trap) to prevent

a water leakage caused by the blocking
of intake air filter.

Unit

Make sure to be closed.

allowed

INCORRECT

Applied U-Trap Dimension

A ≥ 70 mm
B ≥ 2C
C ≥ 2 x SP
SP = External Pressure

(mmAq)

Ex) External Pressure

= 10 mmAq
A ≥ 70 mm
B ≥ 40 mm
C ≥ 20 mm

Thermal insulator

(Local supply)

Drainage pipe
(Local supply)

Drainage hole

C

A

B

U-Trap