LG CL09R.N20, CL12R.N20, CL18R.N20, CM24R.N10, UM30R.N10 Installation Manual

P/NO : MFL67939930

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.

Ceilling Concealed Duct
Original instruction (R32)

[Representative] LG Electronics Inc. EU Representative :
LG Electronics European Shared Service Center B.V.
Krijgsman 1, 1186 DM Amstelveen, The Netherlands
[Manufacturer] LG Electronics Inc. Changwon 2nd factory 84, Wanam-ro,
Seongsan-gu, Changwon-si, Gyeongsangnam-do, KOREA

Copyright © 2017 - 2018 LG Electronics Inc. All Rights Reserved.

ENGLISH ITALIANO ESPAÑOL FRANÇAIS DEUTSCH

ΕΛΛΗΝΙΚΆ

ČEŠTINA

NEDERLANDS

POLSKI

LIMBA ROMÂNĂ

ENGLISH

2

MODEL DESIGNATION

MODEL DESIGNATION

Product information

- Product Name : Air conditioner

- Model Name :

SQSM N B 015

Serial number

Chassis name

Indoor Unit / Outdoor Units

N : Indoor Unit
U : Outdoor Unit

Detailed product type only
for M- series models

AQ : Wall mounted Libero-R
SQ : Wall mounted Libero-E
AH* : ARTCOOL
AW* : ART COOL Mirror
AH : Ceiling Cassette
AHL : Ceiling Concealed Duct
(Low Static)

Detailed product type for
U- / C- series models

L : Low Static
H : High COP
C : Econo
R : Refrigerant R32

Nominal Capacity

Ex) 7,000 Btu/h Class → '07',
18,000 Btu/h Class → '18'

Product type

S : Wall mounted /
ARTCOOL mirror
J : Wall mounted
A : ARTCOOL
T : Ceiling Cassette
B, M : Ceiling Concealed Duct
V : Ceiling Suspended & floor
Q : Console
P : Floor Standing

Connectable Outdoor unit type

M : Indoor units only for

Multi systems

U : Indoor units only for

Single A systems

C : Common Indoor Unit for

Multi and Single CAC

Airborne Noise Emission

The A-weighted sound pressure emitted by

this product is below 70 dB.

** The noise level can vary depending on the
site.

The figures quoted are emission level and are
not necessarily safe working levels.

Whilst there is a correlation between the
emission and exposure levels, this cannot be
used reliably to determine whether or not
further precautions are required.

Factor that influence the actual level of
exposure of the workforce include the
characteristics of the work room and the other
sources of noise, i.e. the number of
equipment and other adjacent processes and
the length of time for which an operator
exposed to the noise. Also, the permissible
exposure level can vary from country to
country.

This information, however, will enable the
user of the equipment to make a better
evaluation of the hazard and risk.

- Additional Information : serial number is
refer to the barcode on the product.

- Max allowable pressure High side :

4.2 MPa / Low side : 2.4 MPa

- Refrigerant : R32

TIPS FOR SAVING ENERGY

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.

3

ENGLISH

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 :

ENGLISH

4

IMPORTANT SAFETY INSTRUCTIONS

IMPORTANT SAFETY INSTRUCTIONS

Read the precautions in this manual
carefully before operating the unit.

This symbol indicates that the
Operation Manual should be read
carefully.

This appliance is filled with
flammable refrigerant (R32)

This symbol indicates that a service
personnel should be handling this
equipment with reference to the
Installation Manual.

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 MUST conform with local building codes or, in the
absence of local codes, with the Nation Electrical Code NFPA
70/ANSI C1-1003 or current edition and Canadian Electrical
Code Part1 CSA C.22.1.

• 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.

• Compliance with national gas regulations shall be observed.

• Ducts connected to an appliance shall not contain an ignition
source.

IMPORTANT SAFETY INSTRUCTIONS

5

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.

ENGLISH

• 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.

• The appliance shall be stored in a room without continuously
operating ignition sources
(for example: open flames, an operating gas appliance or an
operating electric heater.)

• Two or more people must lift and transport the product. Avoid
personal injury.

• Do not use means to accelerate the defrosting process or to clean,
other than those recommended by the manufacturer.

• Do not pierce or burn refrigerant cycle part.

• Be aware that refrigerants may not contain an odour.

ENGLISH

6

• Keep any required ventilation openings clear of obstruction.

• The appliance shall be stored in a well-ventilated area where the
room size corresponds to the room area as specified for operation.

• Refrigerant tubing shall be protected or enclosed to avoid damage.

• Flexible refrigerant connectors (such as connecting lines between
the indoor and outdoor unit) that may be displaced during normal
operations shall be protected against mechanical damage.

• A brazed, welded, or mechanical connection shall be made before
opening the valves to permit refrigerant to flow between the
refrigerating system parts.

• Mechanical connections shall be accessible for maintenance
purposes.

• The appliance shall be disconnected from its power source during
service and when replacing parts.

IMPORTANT SAFETY INSTRUCTIONS

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

IMPORTANT SAFETY INSTRUCTIONS

7

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.

• 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.

ENGLISH

• 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.

• Turn off all devices that cause fire when the refrigerant leaks.,
ventilate the room (example : opening window or using ventilation
unit), and contact with dealer who you purchased the unit.

• The installation of pipe-work shall be kept to a minimum.

• When mechanical connectors are reused indoors, sealing parts
shall be renewed.

• When flared joints are reused indoors, the flare part shall be re­fabricated.

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

ENGLISH

8

product. - Otherwise, it may cause the failure of product.

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

• Any person who is involved with working on or breaking into a
refrigerant circuit should hold a current valid certificate from an
industry-accredited assessment authority, which authorises their
competence to handle refrigerants safely in accordance with an
industry recognised assessment specification.

• Wear adequate personal protection equipment (PPE) when
installing, maintaining or servicing the product.

Operation

• Avoid excessive cooling and perform ventilation sometimes.

- Otherwise, it may do harm to your health.

IMPORTANT SAFETY INSTRUCTIONS

• 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.

• The appliance shall be stored so as to prevent mechanical damage
from occurring.

• Servicing shall only be performed as recommended by the
equipment manufacturer. Maintenance and repair requiring the
assistance of other skilled personnel shall be carried out under the
supervision of the person competent in the use of flammable
refrigerants.

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

• Periodic ( more than once/year ) cleaning of the dust or salt
particles stuck on the heat exchanger by using water.

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

TABLE OF CONTENTS

2 MODEL DESIGNATION

3 TIPS FOR SAVING ENERGY

4 IMPORTANT SAFETY INSTRUCTIONS

10 INSTALLATION PLACES

12 THE INDOOR UNIT INSTALLATION

12 Position of suspension Bolt
15 Wiring Connection
17 Flaring Work

TABLE OF CONTENTS

9

ENGLISH

20 REMOTE CONTROLLER INSTALLATION

22 Wired remote controller installation

23 OPTIONAL OPERATION

23 Installer Setting -Test Run Mode
24 Installer Setting - Setting Address of Central Control
25 Installer Setting -Thermistor
26 Installer Setting -Ceiling Height Selection
27 Installer Setting-Group Setting
28 Installer Setting-Dry Contact Mode Setting
29 Installer Setting-Celsius / Fahrenheit Switching
30 Installer Setting -Optional Function Setting
31 Installer Setting - Remote controller Mode Lock

32 HOW TO SET E.S.P?

32 Installer Setting -E.S.P.
34 Installer Setting - Static Pressure Step Setting

39 SELF-DIAGNOSIS FUNCTION

40 DIP SWITCH SETTING

ENGLISH

10

INSTALLATION PLACES

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 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.

INSTALLATION PLACES

Ceiling Concealed Duct – Low Static Ceiling Concealed Duct – Mid Static

Top view

(unit: mm)

Inspection hole (600 x 600)

Control box

600

Air outlet

600

Top view

(unit: mm)

600

Inspection hole

(600 x 600)

Control box

1000

Front

Side view

(unit: mm)

• Suitable dimension "H" is necessary to get a slope

to drain as shown in the figure

CAUTION

!

Air outlet

H=20 or more

Front view

H

• In case that the unit is installed near the sea, the installation parts may be corroded by salt,
The installation parts (and the unit) should be taken appropriate anti-corrosion measures.

600

[Inspection Hole Standard]

Number of

Inspection hole

1 More than 100cm Sufficient space in the ceiling for servicing.

2 20cm to 100cm Insufficient space. Difficult for servicing

Hole size should be

more than the size

of IDU.

False ceiling & Actual ceiling

Distance between

Remarks

Less than 20cm Minimum height for motor replacement.

INSTALLATION PLACES

11

Minimum floor area

- The appliance shall be installed, operated and stored in a room with a floor area larger than the mini­mum area.

- Use the graph of table to determine the minimum area.

ENGLISH

Amin (m2)

600

500

400

300

200

100

0

0 1.224 2 3 4 5 6 7 8

- m : Total refrigerant amount in the system

- Total refrigerant amount : factory refrigerant charge + additional refrigerant amount

- Amin : minimum area for installation

Floor standing

Wall mounted

Ceiling mounted

m (kg)

Floor location

m (kg) Amin (m

< 1.224

1.224 12.9

1.4 16.82

1.6 21.97

1.8 27.80
2 34.32

2.2 41.53

2.4 49.42

2.6 58.00

2.8 67.27
3 77.22

3.2 87.86

3.4 99.19

3.6 111.20

3.8 123.90
4 137.29

4.2 151.36

4.4 166.12

-

Floor location

2

m (kg) Amin (m

)

4.6 181.56

4.8 197.70
5 214.51

5.2 232.02

5.4 250.21

5.6 269.09

5.8 288.65
6 308.90

6.2 329.84

6.4 351.46

6.6 373.77

6.8 396.76
7 420.45

7.2 444.81

7.4 469.87

7.6 495.61

7.8 522.04

2

)

Wall mounted

m (kg) Amin (m

< 1.224

1.224 1.43

1.4 1.87

1.6 2.44

1.8 3.09
2 3.81

2.2 4.61

2.4 5.49

2.6 6.44

2.8 7.47
3 8.58

3.2 9.76

3.4 11.02

3.6 12.36

3.8 13.77
4 15.25

4.2 16.82

4.4 18.46

-

Wall mounted

2

m (kg) Amin (m

)

4.6 20.17

4.8 21.97
5 23.83

5.2 25.78

5.4 27.80

5.6 29.90

5.8 32.07
6 34.32

6.2 36.65

6.4 39.05

6.6 41.53

6.8 44.08
7 46.72

7.2 49.42

7.4 52.21

7.6 55.07

7.8 58.00

2

)

Ceiling Mounted

m (kg) Amin (m

< 1.224

1.224 0.956

1.4 1.25

1.6 1.63

1.8 2.07
2 2.55

2.2 3.09

2.4 3.68

2.6 4.31

2.8 5.00
3 5.74

3.2 6.54

3.4 7.38

3.6 8.27

3.8 9.22
4 10.21

4.2 11.26

4.4 12.36

-

Ceiling Mounted

2

m (kg) Amin (m

)

4.6 13.50

4.8 14.70
5 15.96

5.2 17.26

5.4 18.61

5.6 20.01

5.8 21.47
6 22.98

6.2 24.53

6.4 26.14

6.6 27.80

6.8 29.51
7 31.27

7.2 33.09

7.4 34.95

7.6 36.86

7.8 38.83

2

)

ENGLISH

C

E

G

D

F

I

A

J

B

H

Drainage hole

C

E

G

D

A

J

B

Drainage hole

F

I

H

Inspection Port

Indoor Unit

Ceiling

Canvas Duct

Air Intake Port

Ceiling Board

Ceiling Board

Air Discharge Port

Discharge
Flexible Duct

Intake
Duct

Inspection Port

Indoor Unit

Ceiling

Canvas Duct

Air Intake Port

Ceiling Board

Ceiling Board

Air Discharge Port

Discharge
Flexible Duct

Intake
Duct

12

THE INDOOR UNIT INSTALLATION

THE INDOOR UNIT INSTALLATION

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.

Ceiling Concealed Duct – Low Static

Ceiling Concealed Duct – Mid Static

(Unit: mm)

Dim

ension

Capacity
(kBtu/h

9

12/18

24

A B C D E F G H I J

)

733 772 628 700 36 190 20 660 155 700

933 972 628 700 36 190 20 860 155 900

1133 1172 628 700 36 190 20 1060 155 1100

(Unit: mm)

Dimension

Capacity
(kBtu/h)

18 / 24 / 30

36 / 42

48 / 60

933.4 971.6 619.2

1283.4 1321.6 619.2

1283.4 1321.6 619.2

A B C D E F G H I J

700 30 270 15.2

689.6

30 270 15.2

689.6

30 360 15.2

858 201.4

1208 201.4

1208 291.4

1250

1250

900

THE INDOOR UNIT INSTALLATION

13

ENGLISH

- Select and mark the position for fixing bolts
and piping hole.

- Decide the position for fixing bolts slightly
tilted to the drain direction after considering
the direction of drain hose.

- Drill the hole for anchor bolt on the wall.

CAUTION

!

• This air-conditioner uses a drain pump.

• Install the unit horizontally using a level
gauge.

• During the installation, care should be
taken not to damage electric wires.

NOTE

!

Avoid the following installation location.

1 Such places as restaurants and kitchen

where considerable amount of oil steam
and flour is generated. These may cause
heat exchange efficiency reduction, or
water drops, drain pump mal-function. In
these cases, take the following actions;

- Make sure that ventilation fan is enough
to cover all noxious gases from this
place.

- Ensure enough distance from the cook­ing room to install the air conditioner in
such a place where it may not suck oily
steam.

2 Avoid installng air conditioner in such

places where cooking oil or iron powder is
generated.

3 Avoid places where inflammable gas is

generated.

4 Avoid place where noxious gas is generat-

ed.

5 Avoid places near high frequency genera-

tors.

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

- Select and mark the position for fixing bolts.

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

X 4
X 4
X 4

X 4
X 4
X 4

(Local
supply)

(Local
supply)