Lg Arnu073tjc2, Arnu093tjc2, Arnu123tjc2 Installation Guide
System
Indoor Unit (2 Series)
INSTALLATION MANUAL
LG
Type: Ceiling Cassette - 1Way
IMPORTANT
• 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.
ENGLISH FRANÇAIS ESPAÑOL
2 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 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.
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.
Special warnings
WARNING
• Installation or repairs made by unqualified persons can result in hazards to you and others.
Installation MUST conform with local building codes or, in the absence of local codes, with the National Electrical
Code NFPA 70/ANSI C1-1993 or current edition and Canadian Electrical Code Part1 CSA C.22.1.
• 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.
Installation Manual 3
ENGLISH
Ceiling Cassette - 1Way Type Indoor Unit Installation Manual
TABLE OF CONTENTS
❏ Installation guide map
❏ Four type "A" screws & plastic
anchors
❏ 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
❏ Horizontal meter
❏ Flaring tool set
❏ Specified torque wrenches
(different depending on model No.)
❏ Spanner.......Half union
❏ Hexagonal wrench
❏ Gas-leak detector
❏ Vacuum pump
❏ Gauge manifold
❏ Owner's manual
❏ Thermometer
Installation Parts ....................4
Safety Precautions .................5
Installation
Selection of the best location 8
Ceiling dimension and hang-
ing bolt location ......................9
Wiring Connection ...............10
Installation of Decoration
Panel ....................................11
Drain Piping .........................12
Installation of Wired Remote
Controller..............................14
Optional Operation of
Wired Remote Controller
.....16
Installation Requirements
Required Parts Required Tools
4 Indoor Unit
Installation Parts
Anti-bacteria filter
Air Intake
Air Outlet
R
em
ot
e
C
on
tr
o
lle
r
T
E
M
P
Wired Remote
Controller
Installation Parts
Name
Quantity
Shape
for gas pipe
for liquid pipe
Clamp metal
2 EA
Insulation for
fitting
Conduit
mounting plate
1 SET
1 EA
Drain hose
1 EA
Plastic band
8 EA
Washer for
hanging backet
4 EA
(Other)
• Paper
pattern for
installation
• Owner's
manual
• Installation
manual
Installation Manual 5
ENGLISH
Safety Precautions
Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions must be followed.
■ Be sure to read before installing the air conditioner.
■ Be sure to observe the cautions specified here as they include important items related to safety.
■ 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.
6 Indoor Unit
Safety Precautions
■ Operation
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.
Do not store or use flammable gas or combustibles near the product.
• There is risk of fire or failure of product.
Gasolin
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