LG ARNU093TNA4 INSTALLATION MANUAL
INSTALLATION MANUAL
AIR
CONDITIONER
ENGLISH
FRANÇAIS
ESPAÑOL
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
http://www.lghvac.com
P/NO : MFL42803130
Rev.08_062218
Copyright © 2013 - 2018 LG Electronics Inc. All Rights Reserved.
www.lg.com
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.
WARNING
• 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
Safety Precautions
Note to installing dealer: The Owners Instructions and Warranty are to be given to the owner or promi-
nently displayed near the indoor Furnace/Air Handler Unit.
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.
• 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.
WARNING
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.
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
... in a room: Properly insulate any tubing run inside a room to prevent "sweating" that can cause dripping and
... in moist or uneven locatinons: Use a raised concrete pad or concrete blocks provide a solid, level foundation
... in an area with high winds: Securely anchor the outdoor unit down with bolts and a metal frame. Provide a
... in a snowy area(for Heat Pump Model): Install the outdoor unit on a raised platform that is higher than drifting
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.
strong wood or metal frame to provide added support.
water damage to wall and floors.
for the outdoor unit. This prevents water damage and abnormal vibration.
suitable air baffle.
snow. Provide snow vents.
2 Indoor Unit
Table of contents
TABLE OF CONTENTS
4 INSTALLATION PARTS
5 SAFETY PRECAUTIONS
7 INSTALLATION
7 Selection of the best location
8 Ceiling dimension and hanging bolt location
9 Wiring Connection
12 Plumbing materials and storage methods
13 Flaring Work
14 Installation of Decoration Panel
15 Drain Piping
16 Ceiling Height Selection
17 DIP Switch Setting
18 Group Control Setting
22 Model Designation
22 Airborne Noise Emission
22 Limiting concentration
ENGLISH
Installation Manual 3
Installation Parts
Installation Parts
Air Outlet
Installation Tool
Name
Quantity
Shape
Drain hose
1 EA
Clamp metal
2 EA
Air
Intake
Wired Remote Controller(Accessory)
Washer for
hanging backet
8 EA
Plastic band
4 EA
Insulation for
fitting
1 SET
for gas pipe
Anti-bacteria filter
Conduit
mounting plate
1 EA
(Other)
• Paper
pattern for
installation
• Owner's
manual
• Installation
manual
• Screws for fixing panels are attached to decoration panel.
4 Indoor Unit
for liquid pipe
Safety Precautions
Safety Precautions
ENGLISH
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.
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to properties only.
n Meanings of symbols used in this manual are as shown below.
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.
Installation Manual 5
Safety Precautions
• 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.
• 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.
Operation
• Do not store or use flammable gas or combustibles near the product.
- There is risk of fire or failure of product.
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.
• 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.
6 Indoor Unit
Installation
Annexed sheet
Or
Packing corrugated
cardboard on the
bottom
Installation
Read completely, then follow step by step.
Selection of the best location
• 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.
* Case of the size
[Width : 570(22-
* Case of the size
[Width : 840(33-
Below 36 kBtu/h(10.6 kW) At least 1 800(70-
Over 36 kBtu/h(10.6 kW) At least 1 800(70-
7
/16)] x [Depth : 570(22-7/16)]
)
32
/
)
8
/
3
or more
1 000(39-
13
10(
or more
“A”
Floor
Ceiling Board
11
500(19-
/16)
or more
30(1-3/16)
1
±3(
/8)
1
/16)] x [Depth : 840(33-1/16)]
15(19/32) ±3(1/8)
“A”
23
3 600(141-
/32) or less
11
4 200(165-
/32) or less
Ceiling Board
500(19-11/16)
or more
7
/8),
7
/8),
Ceiling
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.
) or less
16
/
13
300(11-
Unit:mm(inch)
ENGLISH
CAUTION : Don't install additional ventilation products on the cabinet of cassette type air conditioner.
h Please use an annexed sheet or the corrugated
cardboard on the bottom of packing as installation sheet.
h When using the bottom sheet, please use it
after separating the installation sheet from
packing of the product floor by using a knife etc
as a picture below.
Installation Manual 7
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