LG CB12L INSTALLATION INSTRUCTIONS
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
[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
INSTALLATION MANUAL
AIR
CONDITIONER
MFL67939918
Rev.00_112118
Copyright © 2015 - 2018 LG Electronics Inc. All Rights Reserved.
ITALIANO
ESPAÑOL FRANÇAIS DEUTSCH
ΕΛΛΗΝΙΚΆ
ČEŠTINA
NEDERLANDS
POLSKI
LIMBA ROMÂNĂ
ENGLISH
2
3 SAFETY PRECAUTIONS
8 MODEL DESIGNATION
8 Product information
9 Airborne Noise Emission
9 Limiting concentration
10 EXTERNAL APPEARANCE
11 INSTALLATION PLACES
11 Selection of the best location
13 THE INDOOR UNIT INSTALLATION
19 Indoor Unit Drain Piping
19 Drain test
21 Heat Insulation
22 Wiring Connection
24 REMOTE CONTROLLER INSTALLATION
25 Wired remote controller installation
26 Wired Remote Controller
27 OPTIONAL OPERATION
27 Installer Setting -Test Run Mode
28 Installer Setting - Setting Address of Central Control
29 Installer Setting -Thermistor
30 Installer Setting-Group Setting
31 Installer Setting-Dry Contact Mode Setting
32 Installer Setting-Celsius / Fahrenheit Switching
33 Installer Setting -Optional Function Setting
34 Installer Setting – Remote controller Mode Lock
35 HOW TO SET E.S.P?
35 Installer Setting -E.S.P.
36 Installer Setting - Static Pressure Step Setting
42 SELF-DIAGNOSIS FUNCTION
42 DIP SWITCH SETTING
TABLE OF CONTENTS
Safety Precautions
Installation Manual 3
ENGLISH
Safety Precautions
To prevent the injury of the user or other people and property damage, the following instructions
must be followed.
n Be sure to read before installing the air conditioner.
n Be sure to observe the cautions specified here as they include important items related to safety.
n Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is
classified by the following indications.
n The meanings of the symbols used in this manual are as shown below.
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to properties only.
Be sure not to do.
Be sure to follow the instruction.
WARNING
CAUTION
!
!
WARNING
!
Installation
• Do not use a defective or underrated circuit breaker. Use this
appliance on a dedicated circuit.
- 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. There is risk of fire or
electric shock.
• Always ground the product.
- 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.
• Always install a dedicated circuit and breaker.
- Improper wiring or installation may cause fire or electric shock.
• Use the correctly rated breaker or fuse.
- There is risk of fire or electric shock.
• Do not modify or extend the power cable.
- There is risk of fire or electric shock.
4
Safety Precautions
• Do not install, remove, or re-install the unit by yourself (customer).
- There is risk of fire, electric shock, explosion, or injury.
• Be cautious when unpacking and installing the product.
- Sharp edges could cause injury. Be especially careful of the case
edges and the fins on the condenser and evaporator.
• For installation, 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.
- It may cause injury, accident, or damage to the product.
• Be sure the installation area does not deteriorate with age.
- If the base collapses, the air conditioner could fall with it, causing
property damage, product failure, and personal 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.
• 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.
Operation
• 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.
• 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.
• Do not touch(operate) the product with wet hands.
- There is risk of fire or electrical shock.
• Do not place a heater or other appliances near the power cable.
- There is risk of fire and electric shock.
• Do not allow water to run into electric parts.
- It may cause There is risk of fire, failure of the product, or electric
shock.
Installation Manual 5
Safety Precautions
ENGLISH
• Do not store or use flammable gas or combustibles near the product.
- There is risk of fire or failure of product.
• Do not use the product in a tightly closed space for a long time.
- Oxygen deficiency could occur.
• When flammable gas leaks, turn off the gas and open a window for
ventilation before turn the product on.
- Do not use the telephone or turn switches on or off. There is risk of
explosion or fire.
• If strange sounds, or small or smoke comes from product. Turn the
breaker off or disconnect the power supply cable.
- There is risk of electric shock or fire.
• Stop operation and close the window in storm or hurricane. If possible,
remove the product from the window before the hurricane arrives.
- There is risk of property damage, failure of product, or electric shock.
• Do not open the inlet grill 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.
• When the product is soaked (flooded or submerged), contact an
Authorized Service Center.
- There is risk of fire or electric shock.
• Be cautious that water could not enter the product.
- There is risk of fire, electric shock, or product damage.
• Ventilate the product from time to time when operating it together with
a stove, etc.
- There is risk of fire or electric shock.
• Turn the main power off when cleaning or maintaining the product.
- There is risk of electric shock.
• When the product is not 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 could step on or fall onto the outdoor
unit.
- This could result in personal injury and product damage.
CAUTION
!
Installation
• Always check for gas (refrigerant) leakage after installation or repair of
product.
- Low refrigerant levels may cause failure of product.
• Install the drain hose to ensure that water is drained away properly.
- A bad connection may cause water leakage.
• Keep level even when installing the product.
- To avoid vibration or water leakage.
• Do not install the product where the noise or hot air from the outdoor
unit could damage the neighborhoods.
- It may cause a problem for your neighbors.
• Use two or more people to 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. Corrosion, particularly on the
condenser and evaporator fins, could cause product malfunction or
inefficient operation.
Operation
• Do not expose the skin directly to cool air for long periods of time.
(Don't sit in the draft.)
- This could harm to your health.
• 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, etc.
- There is risk of fire, electric shock, or damage to the plastic parts of
the product.
6
Safety Precautions
Safety Precautions
Installation Manual 7
ENGLISH
• Do not touch the metal parts of the product when removing the air
filter. They are very sharp!
- There is risk of personal injury.
• Do not step on or put anyting on the product. (outdoor units)
- There is risk of personal injury and failure of product.
• Always insert the filter securely. Clean the filter every two weeks or
more often if necessary.
- A dirty filter reduces the efficiency of the air conditioner and could
cause product malfunction or damage.
• Do not insert hands or other objects through the air inlet or outlet while
the product is operated.
- There are sharp and moving parts that could cause personal injury.
• 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 or maintaining the product.
- Be careful and avoid personal injury.
• 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 explosion.
• Do not recharge or disassemble the batteries.
Do not dispose of 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.
8
Model Designation
Product information
- Product Name : Air conditioner
- Model Name :
- 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 : R410A
SM SQ15 BN 0
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
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
Model Designation
Model Designation
Installation Manual 9
ENGLISH
Limiting concentration is the limit of Freon gas concentration where immediate measures
can be taken without hurting human body when refrigerant leaks in the air. The limiting
concentration shall be described in the unit of kg/m
3
(Freon gas weight per unit air volume)
for facilitating calculation
n Calculate refrigerant concentration
Refrigerant
concentration (kg/m
3
)
Limiting concentration
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.
Total amount of replenished refrigerant in refrigerant facility (kg)
Capacity of smallest room where indoor unit is installed (m
3
)
Limiting concentration: 0.44 kg/m
3
(R410A)
=
Airborne Noise Emission
10
External Appearance
External Appearance
• Ceiling Concealed Duct – Low static pressure
L1/L2/L3 Chassis
• Ceiling Concealed Duct – Mid static pressure
M1/M2/M3 Chassis
• Ceiling Concealed Duct – H-INV
BR Chassis
• Ceiling Concealed Duct – Compact
BH Chassis
• Celling Concealed Duct – High static pressure
B8 Chassis
Installation Places
Installation Manual 11
ENGLISH
Ceiling Concealed Duct – Low Static Ceiling Concealed Duct – Mid Static
Ceiling Concealed Duct – Compact
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.
Inspection hole (600 x 600)
Control box
H=20 or more
• Suitable dimension "H" is necessary to get a slope
to drain as shown in the figure
600
600
Air outlet
Air outlet
Top view
(unit: mm)
Front view
Inspection hole
(600 x 600)
Control box
1 000
H
600
600
Front
Top view
(unit: mm)
(unit: mm)
Side view
Top view
(unit: mm)
Front view
H
Front
Inspection hole
(600 x 600)
Control box
1 000
Selection of the best location
Installation Places
12
Installation Places
CAUTION
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.
!
[Inspection Hole Standard]
Number of
Inspection hole
Distance between
False ceiling & Actual ceiling
Remarks
1 More than 100 cm
Sufficient space in the ceiling for servicing.
2 20 cm to 100 cm
Insufficient space. Difficult for servicing
Hole size should be more
than the size of IDU.
Less than 20 cm
Minimum height for motor replacement.
Ceiling Concealed Duct – H-INV Ceiling Concealed Duct – High Static
Top view
(unit: mm)
Front view
Top view
(unit: mm)
Front view
H
Front
Inspection hole
(600 x 600)
Control box
1 000
H
600 600
Front
Inspection hole (600X600)
Control box
The indoor unit installation
Installation Manual 13
ENGLISH
The indoor unit installation
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.
C
E
G
D
F
I
A
J
B
H
Drainage hole
(Unit: mm)
Dimension
Capacity
(kBtu/h)
A B C D E F G H I J
9
733 772 628 700 36 190 20 660 155 700
12/18
933 972 628 700 36 190 20 860 155 900
24
1 133 1 172
628 700 36 190 20
1 060
155
1 100
Ceiling Concealed Duct – Low Static
Ceiling Concealed Duct – Compact
(Unit:mm)
A B C D E F (G) H I J
18/24 K
932 882 355 46 450 30 87 750 163 260
Dimension
Capacity
Inspection
Port
Indoor Unit
Ceiling
Canvas
Duct
Air Intake
Port
Ceiling
Board
Ceiling Board
Air Discharge
Port
Discharge
Flexible Duct
Intake
Duct
A
B
CD
(G)
EF
body
filter
Joint canvas
Main duct
Drainage hole
Inspection
Port
Indoor Unit
Ceiling
Canvas
Duct
Air Intake
Port
Ceiling
Board
Ceiling Board
Air Discharge
Port
Discharge
Flexible Duct
Intake
Duct
H
I
J
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