LG Multi Type Air Conditioner User manual

ENGLISH FRANÇAIS ESPAÑOL
LG Casstte Type
Air Conditioner
INSTALLATION MANUAL
LG
website http://www.lgservice.com
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.

2Cassette type Air Conditioner
Cassette Type Air Conditioner Installation Manual
TABLE OF CONTENTS
Safety Precautions .....3
Installation of Indoor,
Outdoor unit................6
Ceiling opening
dimensions and hanging
bolt location
..................8
The indoor unit
installation...................9
Remote controller
installation...................9
Wiring connection ....11
Connecting Pipes to
the Indoor Unit ..........13
Installation of
decorative panel .......15
Indoor unit drain piping
....................................16
Test running ..............19
Optional operation....21
• Connecting cable
• Four Type "A" Screw
• Hanging Bolt
(W 3/8 or M10 length
650mm(25.6inch))
• Pipes: Gas side
Liquid side
• Insulated drain hose
• Additional Drain hose
(Inner Dia.............32mm(1.26inch))
• Level
• Screw driver
• Electric drill
• Hole core drill (ø70mm(2.76inch))
• Flaring Tools set
• Torque Wrenches
• Hexagonal Wrench (4mm,
5mm(0.16inch, 0.20inch))
• Gas-leak detector
• Owner’s Manual
• Thermometer
Installation
Requirements Required Parts Required Tools

Safety Precautions
Installation Manual 3
ENGLISH
To prevent injury to the user or other people and property damage, the following instructions
must be followed.
■ 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.
WARNING
CAUTION
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage.
WARNING
Be sure not to do.
Be sure to follow the instruction.
Safety Precautions
■Installation
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 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.

4Cassette type Air Conditioner
Safety Precautions
Do not modify or extend the power cable.
• There is risk of fire 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 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 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 store or use flammable gas or combustibles
near the product.
• There is risk of fire or failure of product.
■Operation
Gasolin

Installation Manual 5
ENGLISH
Safety Precautions
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.
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.
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.
CAUTION
90°
■Installation

6Cassette type Air Conditioner
Installation of Indoor, Outdoor Unit
Installation of Indoor, Outdoor Unit
1. Indoor unit
• There should not be any heat source or
steam near the unit.
• There should not be any obstacles to
prevent 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 keep the
maintenance space.
2. Outdoor unit
• If an awning is built over the unit to prevent
direct sunlight or rain exposure, be careful
that heat radiation from the condenser is
not restricted.
• There should not be any animals or plants
which could be affected by hot air
discharged.
• Ensure the spaces indicated by arrows
from the wall, ceiling, fence or other
obstacles.
Selection of the best location
Unit:cm(inch)
Ceiling
Ceiling Board
Ceiling Board
30(11.8) or more
Above 250(98.4)
330(157.5) or less
100(39.4) or more
50(19.7)
more
50(19.7)
or more
30(11.8) or less
Floor
More than
30cm(11.8inch)
Sunroof
Fence or
obstacles
More than
50cm(19.7inch)
More than
50cm(19.7inch)
Fence or
obstacles
More than
50cm(19.7inch)
Sunroof
More than
30cm(11.8inch)
More than
70cm(27.6inch)
More than
50cm(19.7inch)
More than 100cm
(39.4inch)

Installation Manual 7
ENGLISH
Installation of Indoor, Outdoor Unit
3. Piping length and the elevation
Gas Liquid Standard Max. Standard Max.
24k Btu/h 1/2"(12.7mm) 1/4"(6.35mm) 7.5(25') 30(100') 5(16') 15(50') 20(0.22 oz./ft.)
34k Btu/h
5/8"(15.88mm) 1/4"(6.35mm) 7.5(25') 35(115') 5(16') 20(66') 30(0.32 oz./ft.)
Capacity
Pipe Size Length A(m) Elevation B(m) *Additional
(Diameter:Ø) refrigerant(g/m)
Outdoor unit
Indoor unit
A
B
Outdoor unit
Indoor unit
A
B
A
Oil trap
If piping length is more than 5m(16.4ft)
Outdoor unit
Indoor unit
B
CAUTION:
•Rated performance for refrigerant line length of:7.5m(25ft)
•Capacity is based on standard length and maximum allowance length is on the
basis of reliability.
•Improper refrigerant charge may result in abnormal cycle.
•Oil trap should be installed every 10 meters
(32.8ft). .

8Cassette type Air Conditioner
• Select and mark the position for fixing bolts
and piping hole.
• Decide the position for fixing bolts slightly
tilted to the drain direction after considering
the direction of drain hose.
• Drill the hole for anchor bolt on the wall.
CAUTION:
• This air-conditioner uses a drain pump.
•Horizontly install the unit using a
level gauge.
•
During the installation, care should be
taken not to damage electric wires.
• Thoroughly study the following installation locations:
1. In such places as restaurants and kitchens, considerable amount of oil steam and flour
adhere to the turbo fan, the fin of the heat exchanger and the drain pump, resulting in heat
exchange reduction, spraying, dispersing of water drops, drain pump malfunction, etc.
In these cases, take the following actions:
• Make sure that the ventilation fan for smoke-collecting hood on a cooking table has
sufficient capacity so that it draws oily steam which should not flow into the suction of the
air conditioner.
• Make enough distance from a cooking room to install the air conditioner in such a place
where it may not suck in oily steam.
2. Avoid installing air conditioner in such circumstances where cutting oil mist or iron powder is
in suspension in factories, etc.
3. Avoid places where inflammable gas is generated, flows in, is stored or vented.
4. Avoid places where sulfurous acid gas or corrosive gas is generated.
5. Avoid places near high frequency generators.
NOTICE
Ceiling opening dimensions and hanging bolt location
• The dimensions of the paper model for installing are the same as those of the ceiling opening dimensions.
Ceiling board
Level gauge
Ceiling
Use the ventilation fan
for smoke-collecting
hood with sufficient
capacity.
Cooking table
Air conditioner
Take enough
distance
Unit:mm(inch)
900(35.4) (ceiling opening)
688(27.1) (hanging bolt)
840(33.1)
900(35.4) (ceiling opening)
806(31.7) (hanging bolt)
840(33.1)
Ceiling opening dimensions and hanging bolt location

Installation Manual 9
ENGLISH
Wall
5~7mm
(0.20~0.28inch)
Indoor Outdoor
Set screw of
paper model (4 pieces)
Paper model
for installation
Ceiling board
150mm(5.91inch)
Adjust the same height
Ceiling board
Ceiling
Flat washer for M10
(accessory)
Keep the length of the bolt
from the bracket to 40mm(1.57inch)
Open the ceiling board
along the outer edge of the
paper model
Flat washer for M10
(accessory)
Hanging bolt
(W3/8 or M10)
Nut
(W3/8 or M10)
Nut
(W3/8 or M10)
Spring washer
(M10)
Air Conditioner body
The Indoor Unit Installation
• The following parts is option.
Hanging Bolt - W 3/8 or M10
Nut - W 3/8 or M10
Spring Washer - M10
Plate Washer - M10
CAUTION: Tighten the nut and bolt
to prevent unit falling.
• Drill the piping hole on the wall slightly tilted to the
outdoor side using a Ø 70(2.76inch) hole-core drill.
•Although the room temperature sensor is in the indoor unit, the remote controller should
be installed in such places away from direct sunlight and high humidity.
Installation of the remote controller
• Select places that are not splashed with water.
• Select control position after receiving customer approval.
• The room temperature sensor is built in the indoor unit.
• This remote controller equipped with liquid crystal display. If this position is higher or lower,
display is difficult to see.(The standard height is 1.2 ~ 1.5m(3.9~4.9ft) high)
Routing of the remote controller cord
• Keep the remote controller cord away from the refrigerant piping and the drain piping.
• To protect the remote controller cord from electrical noise, place the cord at least 5cm(2.0inch)
away from other power cables (audio equipment, television set, etc.)
• If the remote controller cord is secured to the wall, provide a trap at the top of the cord to
prevent water droplets from running.
The Indoor Unit Installation
Remote Controller Installation

10 Cassette type Air Conditioner
Wired Remote Control Installation
Remote Control Preparation
Remote control
box body
Cord clamp
(accessory)
Lever carefully
the box open
using a screw
driver, etc.
Front case
The lower part
Face of wall
Under plate
Screw (accessory)
Remote Controller Installation
HOW TO MOUNT ONTO A WALL
HOW TO INSERT BATTERIES
Remove the battery cover from the remote
controller.
• Slide the cover according to the arrow
direction.
Insert the two batteries.
• Be sure that the (+) and (-) directions are
correct.
• Be sure that both batteries are new.
Re-attach the cover.
• Slide it back into position.
• Fix the under plate on the wall
• Separate the under plate from Remote control box.
• Fix the cord clamps on the wall by
ø 3 tapping screws (accessory).
• Fix the remote control cord.
DISASSEMBLING
ELECTRICAL WIRING
Wire and make sure that terminal
numbers are matched on unit side and
remote controller side.
The maximum length of the cord is 100m(328ft).
If the length of the cord exceeds 50m(164ft),
use a wire size greater than 0.5mm2.
Remote controller
(Main board)
CN REMO
• Do not use rechargeable batteries,
such batteries differ from standard
dry cells in shape, dimensions, and
performance.
• Romove the batteries from the
remote controller if the air
conditioner is not going to be used
for some long time.