LG UU21WH INSTALLATION MANUAL

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INSTALLATION MANUAL

AIR CONDITIONER

• 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.

ƓThis product contains Fluorinated Greenhouse Gases. (R410A)

TYPE : High Efficiency Inverter
Original instruction

P/NO : MFL67855402

ENGLISH

ITALIANO

ESPAÑOL

FRANÇAIS

DEUTSCH

ΕΛΛΗΝΙΚΆ

ČEŠTINA

NEDERLANDS

POLSKI

LIMBA ROMÂNĂ

2

Single A Air Conditioner Installation Manual

CONTENTS

Safety Precautions ..............................................................................................3

Installation Places ...............................................................................................6

Piping length and the elevation .........................................................................6

The outdoor unit installation..............................................................................7

Connecting Pipes ................................................................................................9

Leakage test and Evacuation ...........................................................................12

Wiring Connection.............................................................................................14

Test running .......................................................................................................15

Night Silent Operation Setting .........................................................................16

Self-diagnosis Function....................................................................................16

Installation Guide at the Seaside .....................................................................17

Safety Precautions

Installation Manual 3

ENGLISH

To prevent the injury of 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.

n The meanings of the 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.

n Installation

Be sure not to do.

Be sure to follow the instruction.

Safety Precautions

Always perform grounding.

• Otherwise, it may cause
electrical shock.

Don’t use a power cord, a
plug or a loose socket which
is damaged.

• Otherwise, it may cause a fire
or electrical shock.

For installation of the product,
always contact the service
center or a professional
installation agency.

• Otherwise, it may cause a fire,
electrical shock, explosion or
injury.

Securely attach the electrical
part cover to the indoor unit
and the service panel to the
outdoor unit.

• If the electrical part cover of the
indoor unit and the service
panel of the outdoor unit are not
attached securely, it could result
in a fire or electric shock due to
dust, water, etc.

Always install an air leakage
breaker and a dedicated
switching board.

• No installation may cause a fire
and electrical shock.

Do not keep or use flammable
gases or combustibles near
the air conditioner.

• Otherwise, it may cause a fire
or the failure of product.

Ensure that an installation frame of the
outdoor unit is not damaged due to use for a
long time.

• It may cause injury or an accident.

Do not disassemble or repair the product
randomly.

• It will cause a fire or electrical shock.

4

Safety Precautions

Do not install the product at a place that there
is concern of falling down.

• Otherwise, it may result in personal injury.

Use caution when unpacking and installing.

• Sharp edges may cause injury.

Take the power plug out if
necessary, holding the head
of the plug and do not touch
it with wet hands.

• Otherwise, it may cause a fire
or electrical shock.

Do not use the power cord
near the heating tools.

• Otherwise, it may cause a fire
and electrical shock.

Do not open the suction
inlet of the indoor/outdoor
unit during operation.

• Otherwise, it may electrical
shock and failure.

Do not allow water to run
into electrical parts.

• Otherwise, it may cause the
failure of machine or electrical
shock.

Hold the plug by the head
when taking it out.

• It may cause electric shock
and damage.

Never touch the metal parts
of the unit when removing
the filter.

• They are sharp and may
cause injury.

Do not share the outlet with
other appliances.

• It will cause an electric shock
or a fire due to heat
generation.

Do not use the damaged
power cord.

• Otherwise, it may cause a fire
or electrical shock.

Do not modify or extend the
power cord randomly.

• Otherwise, it may cause a fire
or electrical shock.

Take care so that the power
cord may not be pulled
during operation.

• Otherwise, it may cause a fire
or electrical shock.

Unplug the unit if strange
sounds, smell, or smoke
comes from it.

• Otherwise, it may cause
electrical shock or a fire.

Keep the flames away.

• Otherwise, it may cause a fire.

Do not step on the indoor/outdoor unit and
do not put anything on it.

• It may cause an injury through dropping of the
unit or falling down.

Do not place a heavy object on the power
cord.

• Otherwise, it may cause a fire or electrical
shock.

When the product is submerged into water,
always contact the service center.

• Otherwise, it may cause a fire or electrical
shock.

Take care so that children may not step on
the outdoor unit.

• Otherwise, children may be seriously injured
due to falling down.

n Operation

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.

Installation Manual 5

Safety Precautions

ENGLISH

n Installation

Install the drain hose to ensure that drain
can be securely done.

• Otherwise, it may cause water leakage.

Install the product so that the noise or hot
wind from the outdoor unit may not cause
any damage to the neighbors.

• Otherwise, it may cause dispute with the
neighbors.

Always inspect gas leakage after the
installation and repair of product.

• Otherwise, it may cause the failure of product.

Keep level parallel in installing the product.

• Otherwise, it may cause vibration or water
leakage.

Avoid excessive cooling and perform
ventilation sometimes.

• Otherwise, it may do harm to your health.

Use a soft cloth to clean. Do not use wax,
thinner, or a strong detergent.

• The appearance of the air conditioner may
deteriorate, change color, or develop surface
flaws.

Do not use an appliance for special purposes
such as preserving animals vegetables,
precision machine, or art articles.

• Otherwise, it may damage your properties.

Do not place obstacles around the flow inlet
or outlet.

• Otherwise, it may cause the failure of
appliance or an accident.

n Operation

Please install safely at a place that can
sufficiently endure the weight of the product.

• If the strength is not sufficient, the product may
fall and cause injury.

If installed tube is shorter than 10 m, additional charging is not necessary.
*Additional Refrigerant = ((A) -10) x Additional refrigerant (g)

6

Outdoor unit

•

If an awning is built over the unit to prevent direct sunlight
or rain exposure, make sure that heat radiation from the
condenser is not restricted.

• Ensure that the spaces indicated by arrows around
front, back and side of the unit.

•

Do not place animals and plants in the path of the warm air.

•

Take the air conditioner weight into account and select a place
where noise and vibration are minimum.

•

Select a place so that the warm air and noise from the air
conditioner do not disturb neighbors.

• Place that can sufficiently endure the weight and vibration
of the outdoor unit and where even installation is possible

• Place that has no direct influence of snow or rain

• Place with no danger of snowfall or icicle drop

• Place without weak floor or base such as decrepit part of
the building or with a lot of snow accumulation

More than

300

More than 700

More than 600

More than

More than

300300

Sunroof

Fence or

obstacles

OUTDOOROUTDOOR

UnitUnit

OUTDOOR

Unit

More than

300

Unit : mm

Installation Places

Installation Places

Piping length and the elevation

Single Operation

3.5 kW Ø9.52(3/8) Ø6.35(1/4) 5 30 5 20 20

5 kW Ø12.7(1/2) Ø6.35(1/4) 5 50 5 30 20

6 kW

Ø15.88(5/8) Ø9.52(3/8) 5 50 5 30 40

7 kW

Capacity

Additional

refrigerant

(g/m)

Pipe Size

mm(inch)

Length A(m) Elevation B(m)

Gas Liquid

Standard Max. Standard Max.

You need to select adequate installation location considering the following conditions, and make
sure to acquire the consent of the user.

Indoor unit

A

B

Outdoor unit

Indoor unit

Outdoor unit

A

B