LG ARNU48GBRA2 INSTALLATION INSTRUCTIONS
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 - High Static
<![endif]>кмллдавьбхд PORTUGUÊS DEUTSCH FRANÇAIS ESPAÑOL ITALIANO ENGLISH
www.lg.com
P/NO : MFL42803104
Ceiling Concealed Duct - High Static Type Indoor Unit Installation Manual
TABLE OF CONTENTS
Installation Requirements |
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Required Parts |
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Required Tools |
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Features................................... |
3 |
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Safety Precautions................. |
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Installation............................... |
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ο Level gauge |
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ο Four type "A" screws |
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ο Screw driver |
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Selection the best location |
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ο Connecting cable |
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ο Electric drill |
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ο Hole core drill |
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Ceiling opening dimension |
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ο Pipes: Gas side |
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ο Flaring tool set |
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and hanging bolt location ...... |
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Liquid side |
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ο Specified torque wrenches |
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(Refer to Product |
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(different depending on model No.) |
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Data) |
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ο Spanner ....... |
Half union |
Indoor Unit Installation........... |
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ο Insulation materials |
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ο Additional drain pipe |
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Wiring Connection ................. |
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Checking the Drainage........ |
10 |
Dip Switch Setting ............... |
13 |
Group Control Setting.......... |
14 |
οA glass of water
οScrew driver
οHexagonal wrench
οGas-leak detector
οVacuum pump
οGauge manifold
οOwner's manual
οThermometer
How to Set E.S.P? |
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2 
Indoor Unit
Feature
Features
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Air outlet vents |
Air filters |
Air intake vents
Wired Remote Controller 
Name |
Drain hose |
Clamp metal |
Washer for |
Clamp |
Insulation for |
(Other) |
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hanging backet |
(Tie Wrap) |
fitting |
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Quantity |
1 EA |
2 EA |
8 EA |
4 EA |
1 SET |
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• Owner's manual |
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• Installation manual |
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Shape |
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for gas pipe |
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for liquid pipe |
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Installation Manual 3
Safety Precautions
Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions must be followed.
νBe sure to read before installing the air conditioner.
νBe sure to observe the cautions specified here as they include important items related to safety.
νIncorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications.
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to properties only.
ν Meanings of symbols used in this manual are as shown below.
Be sure not to do.
Be sure to follow the instruction.
ν 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.
Install the panel and the cover of control box securely.
•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 install a dedicated circuit and breaker.
•Improper wiring or installation may cause fire or electric shock.
Always ground the product.
•There is risk of fire or electric shock.
Use the correctly rated breaker or fuse.
•There is risk of fire or electric shock.
4 
Indoor Unit
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Safety Precautions |
Do not modify or extend the |
Do not let the air conditioner |
Be cautious when unpacking |
power cable. |
run for a long time when the |
and installing the product. |
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humidity is very high and a |
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door or a window is left open. |
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• There is risk of fire or electric |
• Moisture may condense and |
• Sharp edges could cause |
shock. |
wet or damage furniture. |
injury. Be especially careful of |
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the case edges and the fins |
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on the condenser and evapo- |
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rator. |
For installation, always con- |
Do not install the product on |
Be sure the installation area |
tact the dealer or an |
a defective installation stand. |
does not deteriorate with age. |
Authorized Service Center. |
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• There is risk of fire, electric |
• It may cause injury, accident, |
• If the base collapses, the air |
shock, explosion, or injury. |
or damage to the product. |
conditioner could fall with it, |
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causing property damage, |
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product failure, and personal |
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injury. |
<![endif]>ENGLISH
Use a vacuum pump or Inert (nitrogen) gas when do 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.
ν Operation
Do not store or use flammable gas or combustibles near the product.
• There is risk of fire or failure of product.
Installation Manual 5
Safety Precautions
ν Installation
Always check for gas (refrig- |
Install the drain hose to |
Keep level even when |
erant) leakage after installa- |
ensure that water is drained |
installing the product. |
tion or repair of product. |
away properly. |
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•Low refrigerant levels may cause failure of product.
• A bad connection may cause |
• To avoid vibration or water |
water leakage. |
leakage. |
Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods.
Use two or more people to lift and transport the product.
Do not install the product where it will be exposed to sea wind (salt spray) directly.
• It may cause a problem for |
• Avoid personal injury. |
• It may cause corrosion on the |
your neighbors. |
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product. Corrosion, particular- |
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ly on the condenser and evap- |
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orator fins, could cause prod- |
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uct malfunction or inefficient |
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operation. |
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.
Make sure to check the rated pressure outside machine and adjust E.S.P value after the installation of the product.
• Otherwise, there is a risk of weak cooling/heating and condensed water emission/dripping.
6 
Indoor Unit
Installation
Installation
Read completely, then follow step by step.
Selection of the best location
Install the air conditioner in the location that satisfies the following conditions.
•The place shall easily bear a load exceeding four times the indoor unitʼs 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.
Top view |
Inspection hole |
(unit: mm) |
(600X600) |
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Control box |
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600 |
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<![if ! IE]> <![endif]>1000 |
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600 |
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Front
Front view
H = 20 or more
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 |
Distance between |
Remarks |
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Inspection hole |
False ceiling & Actual ceiling |
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1 |
More than 100cm |
Sufficient space in the ceiling for servicing. |
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20cm to 100cm |
Insufficient space. Difficult for servicing |
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Hole size should be |
Less than 20cm |
Minimum height for motor replacement. |
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more than the size of IDU. |
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<![endif]>ENGLISH
Installation Manual 7
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