LG ARNU093TRC2 INSTALLATION MANUAL
INSTALLATION MANUAL
AIR CONDITIONER
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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.
Ceiling Cassette - 4Way
www.lg.com
P/NO : MFL42803115 |
Copyright © 2009 - 2018 LG Electronics Inc. All Rights Reserved. |
IMPORTANT!
Please read this instruction sheet completely before installing the product.
This air conditioning system meets strict safety and operating standards. As the installer or service person, it is an important part of your job to install or service the system so it operates safely and efficiently.
•Installation or repairs made by unqualified persons can result in hazards to you and others.
Installation of all field wiring and components MUST conform with local building codes or, in the absence of local codes, with the National Electrical Code 70 and the National Building Construction and Safety Code or Canadian Electrical code and National Building Code of Canada.
•The information contained in the manual is intended for use by a qualified service technician familiar with safety procedures and equipped with the proper tools and test instruments.
•Failure to carefully read and follow all instructions in this manual can result in equipment malfunction, property damage, personal injury and/or death.
CAUTION: Improper installation, adjustment, alteration, service or maintenance can void the warranty. The weight of the condensing unit requires caution and proper handling procedures when lifting or moving to avoid personal injury. Use care to avoid contact with sharp or pointed edges.
Safety Precautions
•Always wear safety eye wear and work gloves when installing equipment.
•Never assume electrical power is disconnected. Check with meter and equipment.
•Keep hands out of fan areas when power is connected to equipment.
•R-410A causes frostbite burns.
•R-410A is toxic when burned.
NOTE TO INSTALLING DEALER: The Owners Instructions and Warranty are to be given to the owner or prominently displayed near the indoor Furnace/Air Handler Unit.
When wiring:
Electrical shock can cause severe personal injury or death. Only a qualified, experienced electrician should attempt to wire this system.
•Do not supply power to the unit until all wiring and tubing are completed or reconnected and checked.
•Highly dangerous electrical voltages are used in this system. Carefully refer to the wiring diagram and these instructions when wiring. Improper connections and inadequate grounding can cause accidental injury or death.
•Ground the unit following local electrical codes.
•Connect all wiring tightly. Loose wiring may cause overheating at connection points and a possible fire hazard.
• The choice of materials and installations must comply with the applicable local/national or international standards.
When transporting:
Be careful when picking up and moving the indoor and outdoor units. Get a partner to help, and bend your knees when lifting to reduce strain on your back. Sharp edges or thin aluminum fins on the air conditioner can cut your finger.
When installing...
... in a wall: Make sure the wall is strong enough to hold the unit's weight.
It may be necessary to construct a strong wood or metal frame to provide added support.
... in a room: Properly insulate any tubing run inside a room to prevent "sweating" that can cause dripping and water damage to wall and floors.
... in moist or uneven locatinons: Use a raised concrete pad or concrete blocks provide a solid, level foundation for the outdoor unit. This prevents water damage and abnormal vibration.
... in an area with high winds: Securely anchor the outdoor unit down with bolts and a metal frame. Provide a suitable air baffle.
... in a snowy area(for Heat Pump Model): Install the outdoor unit on a raised platform that is higher than drifting snow. Provide snow vents.
When connecting refrigerant tubing
•Keep all tubing runs as short as possible.
•Use the flare method for connecting tubing.
•Check carefully for leaks before starting the test run.
When servicing
•Turn the power OFF at the main power box(mains) before opening the unit to check or repair electrical parts and wiring.
•Keep your fingers and clothing away from any moving parts.
•Clean up the site after you finish, remembering to check that no metal scraps or bits of wiring have been left inside the unit being serviced.
2 
Indoor Unit
Ceiling Cassette - 4Way Type Indoor Unit Installation Manual
TABLE OF CONTENTS
Installation Requirements |
|
Installation Parts....................... |
4 |
Safety Precautions ................... |
5 |
Installation................................. |
8 |
Selection of the best location... |
8 |
Ceiling dimension and hanging |
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bolt location ............................. |
9 |
Wiring Connection ................. |
10 |
Plumbing materials and storage |
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methods................................. |
13 |
Installation of Decoration |
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Panel ..................................... |
15 |
Drain Piping........................... |
16 |
Dip Switch Setting ................. |
18 |
Group Control Setting............ |
19 |
Required Parts |
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Required Tools |
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ο Installation guide map |
ο Level gauge |
ο Four type "A" screws & plastic |
ο Screw driver |
anchors |
ο Electric drill |
ο Connecting cable |
ο Hole core drill |
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ο Horizontal meter |
ο Pipes: Gas side |
ο Flaring tool set |
Liquid side |
ο Specified torque wrenches |
(Refer to Product Data) |
(different depending on model No.) |
ο Insulation materials |
ο Spanner .......Half union |
ο Additional drain pipe |
|
ο Hexagonal wrench ο Gas-leak detector ο Vacuum pump
ο Gauge manifold
ο Owner's manual ο Thermometer
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Installation Manual 3
Installation Parts
Installation Parts
Anti-bacteria filter
Air
Intake
Air Outlet
Wired Remote Controller(Optional)
Name |
Drain hose |
Clamp metal |
Washer for |
Plastic band |
Insulation for |
Conduit |
(Other) |
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hanging backet |
fitting |
mounting plate |
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Quantity |
1 EA |
2 EA |
8 EA |
4 EA |
1 SET |
1 EA |
• Paper |
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pattern for |
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installation |
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• Owner's |
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Shape |
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manual |
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for gas pipe |
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• Installation |
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manual |
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for liquid pipe |
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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.
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.
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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.
Installation Manual 5
Safety Precautions
•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.
•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 store or use flammable gas or combustibles near the product. - There is risk of fire or failure of product.
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.
•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.
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Installation Manual 7
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