LG MB18AHL INSTALLATION MANUAL
www.lg.com
INSTALLATION MANUAL
AIR CONDITIONER
• 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 : CEILING CONCEALED DUCT
P/NO : MFL67855406
PORTUGUESE
MAGYAR
БЪЛГАРСKN
SRPSKI
HRVATSKI
SVENDKA NORSK
SUOMI DANSK
ENGLISH
ITALIANO
ESPAÑOL
FRANÇAIS
DEUTSCH
ΕΛΛΗΝΙΚΆ
ČEŠTINA
NEDERLANDS
POLSKI
LIMBA ROMÂNĂ
2 Multi-Type Air Conditioner
Multi Type Air Conditioner Installation Manual
CONTENTS
Safety Precautions................................................................................................3
Introduction ...........................................................................................................6
Symbols Used in this Manual .............................................................................6
Features..............................................................................................................6
Installation of Indoor ............................................................................................7
Selection of the best location..............................................................................7
Ceiling dimension and hanging bolt location ......................................................8
Indoor Unit Installation ........................................................................................9
Part name and functions...................................................................................10
Remote Controller Installation...........................................................................13
Group control ....................................................................................................15
Connecting Pipes to the Indoor Unit ................................................................16
Preparation of Piping ........................................................................................16
Connecting Pipes to the Outdoor Unit .............................................................18
Checking the Drainage .......................................................................................18
Connecting Cables between Indoor Unit .........................................................19
Connect the cable to the Indoor unit. ...............................................................19
Test running.........................................................................................................21
Optional Operation..............................................................................................23
Installer Setting -Test Run Mode ......................................................................23
Installer Setting - Setting Address of Central Control.......................................24
Installer Setting -Thermistor..............................................................................25
Installer Setting-Group Setting..........................................................................26
Installer Setting-Dry Contact Mode Setting ......................................................27
Installer Setting-Celsius / Fahrenheit Switching ...............................................28
Installer Setting -Optional Function Setting ......................................................29
Installer Setting -E.S.P. .....................................................................................30
Safety Precautions
Installation Manual 3
ENGLISH
To prevent injury to the user or other people and property damage, the following instructions
must be followed.
n
Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness
is classified by the following indications.
n Meanings of symbols used in this manual are as shown below.
WARNING
CAUTION
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage.
WARNING
Be sure not to do.
Be sure to follow the instruction.
Safety Precautions
n Installation
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 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.
4 Multi-Type Air Conditioner
Safety Precautions
Do not modify or extend the power cable.
• There is risk of fire or electric shock.
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 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 store or use flammable gas or combustibles
near the product.
• There is risk of fire or failure of product.
n Operation
Safety Precautions
Installation Manual 5
ENGLISH
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.
CAUTION
n Installation
6 Multi-Type Air Conditioner
Introduction
This symbol alerts you to the risk of electric shock.
This symbol alerts you to hazards that could cause harm to the
air conditioner.
This symbol indicates special notes.
NOTICE
Features
Air filters
Air outlet vents
Remote Controller
Symbols Used in this Manual
Introduction
Installation of Indoor
Installation Manual 7
ENGLISH
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.
Selection of the best location
Top view
(unit: mm)
600600
Front
1000
A(Min)
B(Min)
Ceiling
Service Space
A
B
H=20 or more
• Suitable dimension "H" is necessary to get a slooe
to drain as aiven in the fiaure
Side view (unit: mm)
Model A B
9/12k 600 900
18/24k 600 1100
(Length: mm)
Installation of Indoor
Installation of Indoor
8 Multi-Type Air Conditioner
Ceiling dimension and hanging bolt location
Installation of Unit
Install the unit above the ceiling correctly.
• Apply a joint-canvas between the unit and duct
to absorb unnecessary vibration.
• Apply a filter Accessory at air return hole.
• Install the unit leaning to a drainage hole side as
a figure for easy water drainage.
• 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.
CASE 1
POSITION OF SUSPENSION BOLT
(Unit:mm)
9/12k Btu/h
850 900 383 570 93.5 190 20.6 795 163
18/24k Btu/h 1130 1180 383 570 93.5 190 20.6 1065 163
Dimension
Capacity
ABCDEFGHI
CASE 2
POSITION OF CONSOLE BOLT
B
A
G
Drainage hole
H
Drain Pump use
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
CE
I
(Local
supply)
(Local
supply)
D
F
Installation Manual 9
Installation of Indoor
ENGLISH
• 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.
Indoor Unit Installation
CAUTION : Tighten the nut
and bolt to prevent unit
falling.
Old building New building
1 Set anchor
2 Plate washer
3 Spring washer
4 Nut
5 Suspension
bolts
10 Multi-Type Air Conditioner
Installation of Indoor
• Low static duct type in case of suction from
back side.
• Low static duct type in case of suction from
bottom side
• Low static duct type application-3Way
Part name and functions
Air Filter
Air
Suction grille
Air
Suction grille
Air outlet
Air outlet
Panel Rear
Panel Rear
Air Filter
Suction grille
Air
Suction grille
Air
Air
Suction grille
Suction grille
Air
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