LG JRNU48GTMA4, JRNU09GTPA4, JRNU42GTMA4, JRNU12GTPA4, JRNU18GTPA4 INSTALLATION MANUAL
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INSTALLATION MANUAL
AIR
CONDITIONER
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 Cassette – 4Way
P/NO : MFL65920802
www.lg.com
Ceiling Cassette - 4Way Type Indoor Unit Installation Manual
TABLE OF CONTENTS
Installation Requirements
Installation Parts ....................3
Safety Precautions.................4
Installation
Selection of the best location
...6
Ceiling dimension and hang-
ing bolt location ......................7
Wiring Connection .................8
Installation of Decoration
Panel ....................................10
Drain Piping..........................11
Ceiling Height Selection......12
Dip Switch Setting ...............13
Group Control Setting..........14
Required Parts Required Tools
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
Specied torque wrenches
(different depending on model No.)
Spanner .......Half union
Hexagonal wrench
Gas-leak detector
Vacuum pump
Gauge manifold
Airborne Noise Emission.....19
Limiting concentration .........19
2 Indoor Unit
Owner's manual
Thermometer
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
Clamp
(Tie Wrap)
4 EA
Anti-bacteria lter
Insulation for
tting
1 SET
for gas pipe
Installation Parts
(Other)
Paper pattern for
installation
Owner's manual
Installation manual
ENGLISH
Screws for xing panels are attached to decoration panel.
for liquid pipe
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 specied here as they include important items related to safety.
Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classied 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 re or electric
shock.
Install the panel and the
cover of control box securely.
There is risk of re or electric
shock.
Do not modify or extend the
power cable.
There is risk of re or electric
shock.
For electrical work, contact
the dealer, seller, a qualied
electrician, or an Authorized
Service Center.
Do not disassemble or repair
the product. There is risk of re
or electric shock.
Always install a dedicated
circuit and breaker.
Improper wiring or installation
may cause re 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.
Always ground the product.
There is risk of re or electric
shock.
Use the correctly rated breaker or fuse.
There is risk of re or electric
shock.
Be cautious when unpacking
and installing the product.
Sharp edges could cause
injury. Be especially careful of
the case edges and the ns on
the condenser and evaporator.
4 Indoor Unit
For installation, always contact the dealer or an Authorized Service Center.
There is risk of re, 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.
Safety Precautions
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
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 ammable gases.
Otherwise, it may cause re or explosion.
There is the risk of death, injury, re or explosion.
Operation
Do not store or use ammable gas or combustibles near the product.
There is risk of re 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.
Use two or more people to lift and transport the product.
Avoid personal injury.
Install the drain hose to
ensure that water is drained
away properly.
A bad connection may cause
water leakage.
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 re, electric shock,
explosion or death.
To avoid vibration or water
Keep level even when
installing the product.
leakage.
Installation Manual 5
Installation
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.
/16)
Ceiling
Ceiling Board
500(19-11/16)
or more
/8)
3
or more
1000(39-
/16)
7
1
/2) or less
13
Ceiling Board
or more
300(11-
500(19-11/16)
or more
/16) or less
13
300(11-
Above 2500(98-
4000(157-
Floor
Unit:mm(inch)
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.
6 Indoor Unit
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