LG ARNU42GBGA4 installation manual
ENGLISH
www.lg.com
Ceiling Concealed Duct - High Static
Original instruction
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 : MFL68320319
2 Indoor Unit
Ceiling Concealed Duct - High Static Type Indoor Unit Installation Manual
TABLE OF CONTENTS
❏ Four type "A" screws
❏ Connecting cable
❏ Pipes: Gas side
Liquid side
(Refer to Product
Data)
❏ Insulation materials
❏ Additional drain pipe
❏ Level gauge
❏ Screw driver
❏ Electric drill
❏ Hole core drill
❏ Flaring tool set
❏ Specified torque wrenches
(different depending on model No.)
❏ Spanner .......Half union
❏ A glass of water
❏ Screw driver
❏ Hexagonal wrench
❏ Gas-leak detector
❏ Vacuum pump
❏ Gauge manifold
❏ Owner's manual
❏ Thermometer
Features ...................................3
Safety Precautions.................4
Installation ...............................7
Selection the best location ....7
Ceiling opening dimension
and hanging bolt location ......8
Indoor Unit Installation...........9
Wiring Connection .................9
Checking the Drainage........10
Indoor Unit Drain Piping ......11
Dip Switch Setting ...............13
Group Control Setting..........14
Model Designation...............18
Airborne Noise Emission.....18
Limiting concentration .........18
How to Set E.S.P? ................19
Installation Requirements
Required Parts Required Tools
Installation Manual 3
Feature
ENGLISH
Features
Name
Quantity
Shape
for gas pipe
for liquid pipe
Clamp metal
2 EA
Insulation for
fitting
1 SET
Drain hose
1 EA
Clamp
(Tie Wrap)
8 EA
Washer for
hanging backet
4 EA
(Other)
• Owner's manual
• Installation manual
Air outlet vents
Air intake vents
Wired Remote Controller
(Accessory)
Air filters
TEMP
R
emote Con
t
r
oll
er
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.
■ Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the
following indications.
■ 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.
■ 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.
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.
Installation Manual 5
Safety Precautions
ENGLISH
■ Operation
Do not allow water to run into
electric parts.
• It may cause There is risk of fire,
failure of the product, or electric
shock.
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.
Do not plug or unplug the power
supply plug during operation.
• 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 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.
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.
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.
6 Indoor Unit
Safety Precautions
■ 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.
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.
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.
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.
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