LG Multi V Art Cool ARNU123SFA4 Installation Manual Download Page 2

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Indoor Unit

IMPORTANT!

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 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 in accordance with all local and national 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.

• 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 all local and national electrical codes.

• 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.

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.

WARNING

WARNING

Summary of Contents for Multi V Art Cool ARNU123SFA4

Page 1: ...he 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 MFL67798127 Art Cool Gallery Series Original instruction http www lghvac com Copyright 2015 2018 LG Electronics Inc All Rights Reserved ENGLISH FRANÇAIS ESPAÑOL ...

Page 2: ...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 d...

Page 3: ... drill o Horizontal meter o Flaring tool set o Specified torque wrenches different depending on model No o Spanner Half union o A glass of water o Screw driver o Hexagonal wrench o Gas leak detector o Vacuum pump o Gauge manifold Installation Parts 4 Safety Precautions 5 Installation 8 Selection the best location 8 Features 8 Preparing Work for Installation 9 Fixing Indoor Unit 10 Drill a Hole in ...

Page 4: ...4 Indoor Unit Installation Parts Installation Parts Air Intake Air Outlet Type A screw and plastic anchor Installation guide map Installation Parts Read carefully and then follow step by step ...

Page 5: ...d 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...

Page 6: ...rty damage product failure and personal injury Use Inert nitrogen gas when doing leakage test 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 ...

Page 7: ...or 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 D...

Page 8: ...ere there are no obstacles in front of the unit Make sure that condensation drainage can be conveniently routed away Do not install near a doorway Ensure that the space around the left and right of the unit is more than 50cm The unit should be installed as high on the wall as possible allowing a minimum of 10cm from ceiling Use a stud finder to locate studs to prevent unnecessary damage to the wal...

Page 9: ...ide cover of desired connecting direction then cover side is separated 3 Pick the pipe hole of the side cover CAUTION After removing the pipe hole cut the burr for safety When making pipe path through rear wall you don t need to pick the pipe hole Notice Drain hose junction 1 Remove the rubber cap in the desired drain direc tion 2 Insert drain hose into the handle of drain pan and join drain hose ...

Page 10: ...ted horizon by horizontal meter on the horizontal setting line and fix lightly the map by adhesive tape 4 Drill the Pierced part as a diameter of 50mm 2 for connecting piping In case of piercing rear surface 6 First Drive the two points of the upper parts by screws Leave 10mm 0 5 for hanging the product 8 Secure the lower screws first and then completely tighten the upper screws 10 Once completed ...

Page 11: ...emoving burrs put the end of the copper tube pipe in a downward direction while removing burrs location is also changed in order to avoid dropping burrs into the tubing Putting nut on Remove flare nuts attached to indoor and outdoor unit then put them on pipe tube having completed burr removal not possible to put them on after flaring work Flaring work 1 Firmly hold copper pipe in a die in the dim...

Page 12: ...age furniture or floors Foamed polyethylene or equivalent is recommended 1 Route the indoor tubing and the drain hose in the direction of rear left or right 2 Tape the tubing drain hose and the connecting cable Be sure that the drain hose is located at the lowest side of the bundle Locating at the upper side can cause drain pan to overflow inside the unit Inclined Inside is shiny without scratches...

Page 13: ...p the area which accommodates the rear piping housing section with vinyl tape 3 Bundle the piping and drain hose together by wrap ping them with vinyl tape over the range within which they fit into the rear piping housing section Wrap with vinyl tape Drain hose Pipe Vinyl tape wide Indoor unit tubing Flare nut Pipings Torque wrench Indoor unit tubing Spanner fixed Connection pipe Flare nut Vinyl t...

Page 14: ...ain Piping 1 To check the drainage Pour a glass of water on the evaporator Ensure the water flows through the drain hose of the indoor unit without any leakage and goes out the drain exit 2 Drain piping The drain hose should point downward for easy drain flow Do not make drain piping Air Waving Water leakage Ditch Water leakage Downward slope Downward slope Downward slope Water leakage Tip of drai...

Page 15: ...d fix the power cord in the bottom groove of cover side left 2 Assemble connecting lead wire with controller fix the upper part of panel front and match the lower part of panel front 3 Screw up panel front and suspend the hook of panel front in the groove Comm PCB Connector Panel Front Connector Comm PCB Connector ...

Page 16: ...tice Be sure to connect wires according to the wiring diagram Connect the wires firmly so that not to be pulled out easily Connect the wires according to color codes by referring the wiring diagram CAUTION After the confirmation of the above conditions prepare the wiring as follows 1 Never fail to have an individual power circuit specifically for the air conditioner As for the method of wiring be ...

Page 17: ...nd wiring you must use round pressure terminals When none are available follow the instructions below Do not connect wiring of different thicknesses to the power terminal block Slack in the power wiring may cause abnormal heat When connecting wiring which is the same thickness do as shown in the figure below For wiring use the designated power wire and connect firmly then secure to prevent outside...

Page 18: ...Hz 7 1 Ø 100 V 50 60 Hz G 1 Ø 220 240 V 50 Hz 1 Ø 220 V 60 Hz Total Cooling Capacity in Btu h EX 5 000 Btu h 05 18 000 Btu h 18 Combination of Inverter Type and Cooling Only or Heat Pump N AC Inverter and H P V AC Inverter and C O U DC Inverter and H P and C O System with Indoor Unit using R410A LGETA U Ex URN Combinations of functions A Basic function L Neo Plasma Wall Mounted C Plasma Ceiling Ca...

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