LG ARNU18GTTC4 installation manual
www.lg.com
Ceiling Cassette - 1Way (Art Type)
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.
INSTALLATION MANUAL
AIR
CONDITIONER
P/NO : MFL69459906
Original instruction
ENGLISH
2 Indoor Unit
Ceiling Cassette - 1Way(Art Type) Type Indoor Unit Installation Manual
TABLE OF CONTENTS
o Installation guide map
o Four type "A" screws & plastic
anchors
o Connecting cable
o Pipes: Gas side
Liquid side
o Insulation materials
o Additional drain pipe
o Level gauge
o Screw driver
o Electric drill
o Hole core drill
o Horizontal meter
o Flaring tool set
o Specified torque wrenches
o Spanner .......Half union
o Hexagonal wrench
o Gas-leak detector
o Vacuum pump
o Gauge manifold
o Owner's manual
o Thermometer
Installation Parts ....................3
Safety Precautions.................4
Installation
Selection of the Best Location
...6
Ceiling Dimension and Hang-
ing Bolt Location ....................7
Wiring Connection .................8
Installation of Decoration
Panel (Panel Type)................9
Installation of Decoration
Panel (Grille Type)...............10
Drain Piping..........................11
DIP Switch Setting...............12
Group Control Setting..........13
Model Designation ..............18
Airborne Noise Emission.....18
Limiting concentration .........18
Installation Requirements
Required Parts Required Tools
Installation Manual 3
Installation Parts
ENGLISH
Installation Parts
Panel type Grille type
• Screws for fixing panels are attached to decoration panel.
Installation Tool
Air
1 EA
Intake
Clamp metal
2 EA
Air Outlet
Name
Quantity
Shape
Drain hose
Air Intake
Wired Remote Controller
(Accessory)
Washer for
hanging bracket
8 EA
Air Outlet
Air
Intake
Plastic band
4 EA
Wired Remote Controller
(Accessory)
Insulation for
fitting
1 SET
for gas pipe
Name
Quantity
Shape
Paper pattern for installation
1 EA
for liquid pipe
Installation and Owner's manual
1 EA
4 Indoor Unit
Safety Precautions
Safety Precautions
To prevent injury to 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 Meanings of 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
n 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.
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.
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.
Installation Manual 5
Safety Precautions
ENGLISH
n Operation
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 store or use flammable gas or combustibles near the product.
• There is risk of fire or failure of product.
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.
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 two or more people to lift and transport the product.
• Avoid personal injury.
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.
CAUTION
n Installation
6 Indoor Unit
Installation
• There should not be any heat source or steam near the unit.
• There should not be any obstacles to the air circulation.
• A place where air circulation in the room will be good.
• A place where drainage can be easily obtained.
• A place where noise prevention is taken into consideration.
• Do not install the unit near the door way.
• Ensure the spaces indicated by arrows from the wall, ceiling, or other obstacles.
• The indoor unit must have the maintenance space.
Read completely, then follow step by step.
Installation
Selection of the Best Location
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.
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
generated.
5. Avoid places near high frequency
generators.
20 ± 3
Ceiling
Ceiling board
500 or
more
1 000
or more
10 or more
Above 1 800
3 300 or less
Ceiling board
200 or more
500 or
more
300 or less
Unit:mm
Floor
Air conditioner
Take enough
distance
Cooking table
Use the ventilation fan
for smoke-collecting
hood with sufficient
capacity.
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