LG JRNU28GBGA4, JRNU42GBGA4, JRNU36GBGA4 INSTALLATION MANUAL
INSTALLATION MANUAL
ENGLISH
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 CONCEALED DUCT - HIGH STATIC
P/No.: MFL66302102_v0
www.lg.com/in
Ceiling Concealed Duct - High Static Type Indoor Unit Installation Manual
TABLE OF CONTENTS
Installation Requirements
Features.....................................3
Safety Precautions....................4
Installation
Selection the best location ....7
Ceiling opening dimension
and hanging bolt location ......8
Indoor Unit Installation...........9
Wiring Connection.................9
Checking the Drainage........10
Installation of Remote con-
troller.....................................13
Optional Operation of Wired
Remote Controller...............15
Required Parts Required Tools
qFour type "A" screws
qConnecting cable
qPipes: Gas side
Liquid side
(Refer to Product Data)
qInsulation materials
qAdditional drain pipe
qLevel gauge
qScrew driver
qElectric drill
qHole core drill
qFlaring tool set
qSpecified torque wrenches
(different depending on model No.)
qSpanner .......Half union
qA glass of water
qScrew driver
qHexagonal wrench
qGas-leak detector
qVacuum pump
qGauge manifold
qOwner's manual
qThermometer
How to Set E.S.P?..............16
Dip Switch Setting ..............19
2 Indoor Unit
Feature
Features
Name
Quantity
Shape
Drain hose
1 EA
Air intake vents
Wired Remote Controller
Clamp metal
1 EA
Air outlet vents
Washer for
hanging backet
8 EA
Clamp
(Tie Wrap)
4 EA
Air filters
Insulation for
1 SET
for gas pipe
for liquid pipe
fitting
(Other)
• Owner's manual
• Installation manual
ENGLISH
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.
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.
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to properties only.
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.
Install the panel and the
cover of control box securely.
• There is risk of fire or electric
shock.
4 Indoor Unit
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.
Safety Precautions
Do not modify or extend the
power cable.
• There is risk of fire or electric
shock.
For installation, always contact the dealer or an
Authorized Service Center.
• There is risk of fire, electric
shock, explosion, or injury.
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.
Do not install the product on
a defective installation stand.
• It may cause injury, accident,
or damage to the product.
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.
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.
ENGLISH
Operation
Do not store or use flammable gas or combustibles near the product.
• There is risk of fire or failure of product.
Gasolin
Installation Manual 5
Safety Precautions
Installation
Always check for gas (refrigerant) leakage after installation or repair of product.
• Low refrigerant levels may
cause failure of product.
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.
Install the drain hose to
ensure that water is drained
away properly.
• A bad connection may cause
water leakage.
Use two or more people to lift
and transport the product.
• Avoid personal injury.
Keep level even when
installing the product.
• To avoid vibration or water
leakage.
90º
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.
6 Indoor Unit
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.
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