LG AMNW12GRBL0 User manual

www.lg.com
• 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.
TYPE : WALL MOUNTED
P/NO : 5400807401 Rev.:c
INSTALLATION MANUAL
AIR
CONDITIONER

2Air Conditioner
Air Conditioner Installation Manual
CONTENTS
Safety Precautions............................3
Introduction........................................6
Symbols used in this manual..........6
Installation ..........................................7
Installation parts...............................7
Installation tools ...............................7
Installation map................................8
Selecting the best location .............9
Fixing Installation Plate .................10
Drilling a hole in the wall ...............10
Flaring work....................................11
Connecting the piping ..................12
Connecting the cables ..................18
Checking the drainage..................20
Forming the piping.........................21
Air purging......................................22
Test running ...................................24
Installation guide at the seaside. ..26
Piping Length and Elevation.........27
Some pieces of type "A" screws
Connecting cable
 Installation guide map
Pipes: Gas side
Liquid side
Insulation materials
Additional drain pipe
(Outer diameter ..............15.5mm)
Some pieces of type "B" screws
Some pieces of type "C" screws
Level gauge
Screw driver
Electric drill
Hole core drill(ø70mm)
Horizontal meter
Flaring tool set
Specified torque wrenches
1.8kg.m, 4.2kg.m, 5.5kg.m,
6.6kg.m
(different depending on model No.)
Spanner ........................Half union
A glass of water
Hexagonal wrench(4mm)
Gas-leak detector
Vacuum pump
Gauge manifold
Owner's manual
Thermometer
Remote controller holder
Installation
Requirements Required Parts Required Tools

Installation Manual 3
Safety Precautions
To prevent the injury of 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.
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.
Installation
Be sure not to do.
Be sure to follow the instruction.
Safety Precautions
ENGLISH
Always perform grounding.
• Otherwise, it may cause
electrical shock.
Donʼt 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 cover to indoor
and pipe cover to outdoor
unit.
• If the electrical part cover to
indoor unit and pipe cover to
outdoor unit are not attached
securely, it could result in a
fire or electric shock due to
dust, water, etc.
Always install a current
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.

4Air Conditioner
Safety Precautions
Do not install the product at a place that
ther 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.
■Operation
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.
There is a risk of fire and explosion.
Inert gas (nitrogen) should be used when you
check plumbing leaks, cleaning or repairs of
pipes etc.
If you are using combustible gases including
oxygen, product may have the risk of fires and
explosions.
•

Installation Manual 5
ENGLISH
Safety Precautions
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 while 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 the 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.
Operation

6Air Conditioner
The figure of product can be different according to the type of model.
Introduction
This symbol alerts you to the risk of electric shock.
This symbol alerts you to hazards that may cause harm to
the air conditioner.
This symbol indicates special notes.
NOTICE
Introduction
Symbols used in this Manual

Type "A" screw
Type "C" screwType "B" screw
The feature can be changed according a type of model.
Remote control holder
Installation plate
Figure FigureName
Screw driver
Electric drill
Measuring tape, Knife
Hole core drill
Spanner
Torque wrench
Multi-meter
Hexagonal wrench
Ammeter
Gas-leak detector
Thermometer,
Level
Flaring tool set
Name
Installation Manual 7
ENGLISH
Installation
Installation Parts
Installation Tools
Installation
Read carefully, and then follow step by step.
SB chassis (9k, 12k) SC chassis (18k, 24k)

8Air Conditioner
Installation
Installation Map
Connecting cable
(Optional Parts)
Vinyl tape (Wide)
• Apply after carrying out a
drainage test.
• To carry out the drainage
test, remove the air filters
and pour water into the heat
exchanger.
Saddle
Gas side piping (Optional Parts)
Liquid side piping (Optional Parts)
Additional drain pipe
Vinyl tape (Narrow)
Drain Hose
Installation plate
Sleeve
Bushing-Sleeve
Putty(Gum Type Sealant)
Bend the pipe as closely
on the wall as possible,
but be careful that it
doesn't break.
You should purchase the installation parts.
NOTICE
- The feature can be changed according a type of model.

Installation Manual 9
ENGLISH
Installation
Indoor unit
1. There should not be any heat or steam near
the unit.
2. Select a place where there are no obstacles
around of the unit.
3. Make sure that condensation drainage can
be conveniently routed away.
4. Do not install near a doorway.
5. Ensure that the interval between a wall and
the left (or right) of the unit is more than
100mm. The unit should be installed as high
as possible on the wall, allowing a minimum
of 200mm from ceiling.
6. Use a metal detector to locate studs to
prevent unnecessary damage to the wall.
Outdoor unit
1. 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.
2. Ensure that the space around the back and
sides is more than 300mm. The space in
front of the unit should be more than 700mm
of space.
3. Do not place animals and plants in the path
of the warm air.
4. Take the weight of the air conditioner into
account and select a place where noise and
vibration are minimum.
5. Select a place where the warm air and noise
from the air conditioner do not disturb
neighbors.
Select the best Location
More than 200
More than
100
More than 2300
More than
100
(Unit : mm)
Install the indoor unit on the wall where the height from the floor is more than 2300mm.
More than
300
More than
300
Sunroof
Fence or
obstacles
More than
700
More than
600
(Unit : mm)

10 Air Conditioner
Indoor unit
The wall you select should be strong and solid
enough to prevent vibration
1. Mount the installation plate on the wall with
type "A" screws. If mounting the unit on a
concrete wall, use anchor bolts.
• Mount the installation plate horizontally by
aligning the centerline using Horizontal meter.
2. Measure the wall and mark the centerline.
It is also important to use caution concerning the
location of the installation plate. Routing of the
wiring to power outlets is through the walls
typically. Drilling the hole through the wall
for piping connections must be done safely.
Installation Plate
Chassis
Hook
Type "A" Screws
Ø70
Ø70
133 95
Right rear piping
Left rear piping
Installation Plate
Place alevel on raised tab
Unit Outline
217
175
442442
• Drill the piping hole with aø70mm hole core
drill. Drill the piping hole at either the right or
the left with the hole slightly slanted to the
outdoor side.
Drill a Hole in the Wall
5-7mm
(3/16"~5/16")
Indoor
WALL
Outdoor
Indoor unit
Fixing Installation Plate
Installation Plate
Chassis
Hook
SB Chassis
SC Chassis
Type "A" Screws
Ø65
Ø65
6956
Right rear
piping
Left rear
piping
Installation Plate
Measuring Tape
Measuring Tape
Hanger
Place alevel on raised tab
Unit Outline
207
105
460 570
SB Chassis (9k, 12k)
SC Chassis (18k, 24k)

Installation Manual 11
ENGLISH
Installation
Flaring Work
Main cause for gas leakage is due to defect of flaring work. Carry out correct flaring work in the
following procedure.
Cut the pipes and the cable.
1. Use the piping kit accessory or the pipes
purchased locally.
2. Measure the distance between the indoor and
the outdoor unit.
3. Cut the pipes a little longer than measured
distance.
4. Cut the cable 1.5m longer than the pipe length.
Burrs removal
1. Completely remove all burrs from the cut cross
section of pipe/tube.
2. While removing burrs put the end of the copper
tube/pipe in a downward direction while
removing burrs location is also changed in
order to avoid dropping burrs into the tubing.
Putting nut on
• Remove flare nuts attached to indoor and
outdoor unit, then put them on pipe/tube having
completed burr removal.
(not possible to put them on after finishing flare
work)
Flaring work
1. Firmly hold copper pipe in a bar with the
dimension shown in below table table below.
2. Carry out flaring work with the flaring tool.
Copper
pipe
90Slanted Uneven Rough
Pipe
Reamer
Point down
Flare nut
Copper tube
mm inch mm
Ø6.35 1/4 1.1~1.3
Ø9.52 3/8 1.5~1.7
Ø12.7 1/2 1.6~1.8
Ø15.88 5/8 1.6~1.8
Ø19.05 3/4 1.9~2.1
Outside diameter A
Bar
Copper pipe
Clamp handle Red arrow mark
Cone
Yoke
Handle
Bar
"A"

Chassis cover
Chassis Cover
12 Air Conditioner
Installation
Check
1. Compare the flared work with the figure by.
2. If a flared section is defective, cut it off and
do flaring work again.
1.
Pull the screw cap at the
bottom of the indoor unit
2. Remove the chassis cover
from the unit by loosing 2 screws
for SB chassis, 3 screws for
SC chassis.
SB Chassis (9k, 12k)
SC Chassis (18,k, 24k)
Inclined
Inside is shiny without scratches
Smooth all round
Even length
all round
Surface
damaged
Cracked Uneven
thickness
= Improper flaring =
Connecting the Piping
1. Hook the indoor unit onto the upper portion of
the installation plate.( engage the three hooks
at the top of the indoor unit with the upper edge
of the installation plate) Ensure that the hooks
are properly seated on the installation plate by
moving it left and right
2. Unlock the tubing holder from the chassis and
mount between the chassis and installation
plate in order to separate the bottom side of the
indoor unit from the wall
Tubing Holder
Installation plate
Installation of Indoor Unit

Installation Manual 13
ENGLISH
Installation
Installation Information. For right piping. Follow the instruction below.
Good case
• Press on the tubing cover and unfold the tubing to downward slowly. And then bend to the left
side slowly.
Bad case
• Following bending case from right to left directly may cause damage to the tubing.
3. Pull back the tubing holder.
4. Remove pipe port cover and positioning the
tubing
Right
Indoor unit back side view
Tubing holder
Backwards
Left
Pipe Port

14 Air Conditioner
Installation
1. Insert the connecting cable through the bottom side of indoor unit and connect the cable (You
can see detail contents in 'Connecting the cables' section)
2. Secure the cable onto the control board with the cable retainer.
<Left side piping> <Right side piping>
View
Terminal block
Connecting cable
Cable retainer
SB Chassis (9k, 12k)
View
Terminal block
Connecting cable
Cable retainer
SB Chassis (9k, 12k)
Connecting the Cables and Piping
Control Cover
SC Chassis (18k, 24k)

Installation Manual 15
ENGLISH
Installation
3. Tape the tubing pipe, drain hose and the connection cable. Be sure that the drain hose is located
at the lowest side of the bundle. Locating at the upper side can cause overflow from the drain
pan through the inside of the unit.
If the drain hose is routed inside the room insulate the hose with an insulation material* so that
dripping from sweating (condensation) will not damage furniture or floors.
* Foamed polyethylene or equivalent is recommended.
Connecting the installation pipe and
drain hose to the indoor unit.
1. Align the center of the pipes and sufficiently
tighten the flare nut by hand
2. Tighten the flare nut with a wrench
3. When needed to extend the drain hose of
indoor unit, assembly the drain pipe as
shown on the drawing
Connecting pipe
Connecting
cable
Tape
Drain hose
Indoor unit tubing Flare nut Pipes
Wrench
Indoor unit tubing
Open-end wrench (fixed)
Connection pipe
Flare nut
Vinyl tape(narrow)
Adhesive
Drain pipe
Indoor unit drain hose
<Left side piping> <Right side piping>
Connecting pipe
Connecting
cable
Tape
Drain hose
mm inch kg.m
Ø6.35 1/4 1.8
Ø9.52 3/8 4.2
Ø12.7 1/2 5.5
Ø15.88 5/8 6.6
Outside diameter Torque

16 Air Conditioner
Installation
Wrap the insulation material around the
connecting portion.
1. Overlap the connection pipe insulation
material and the indoor unit pipe insulation
material. Bind them together with vinyl tape
so that there may be no gap.
2. Wrap the area which accommodates the rear
piping housing section with vinyl tape.
3. Bundle the piping and drain hose together by
wrapping them with vinyl tape sufficient
enough to cover where they fit into the rear
piping housing section.
Finishing the indoor unit installation
1.
Mount the tubing holder in the original positon.
2. Ensure that the hooks are properly seated on
the installation plate by moving it left and
right.
3. Press the lower left and right sides of the unit
against the installation plate until the hooks
engage into their slots (clicking sound).
4. Finish the assembly by screwing the unit to
the installation plate by using two pieces of
type "C" screws. And assemble a chassis
cover.
Insulation material
Vinyl tape(narrow)
Connection pipe
Connecting cable
Vinyl tape (wide) Wrap with vinyl tape
Indoor unit pipe
Pipe
Wrap with vinyl tape
Drain hose
Pipe
Vinyl tape(wide)
Type 'C' screw

Installation Manual 17
2. Align thecenter of thepipingsand suf
1. Removethetubing cover from theunit by
loosening thescrew.
ficiently
tighten theflare nut byhand.
3. Finally, tighten theflare nut with torque
wrench until thewrench clicks.
• When tightening theflare nut with torque
wrench, ensure thedirection fortightening
follows thearrowon thewrench.
Terminal block
Over 5mm
Cover control
Tubing cover
Connecting cable
Outdoor Unit
Power cable
Outdoor unit
Liquid sidepiping
(Smaller diameter)
Gasside
piping
(Bigger
diameter)
Torquewrench
Installation
Outdoor unit
ENGLISH
mm inch kg.m
Ø6.35 1/4 1.8
Ø9.52 3/8 4.2
Ø12.7 1/2 5.5
Ø15.88 5/8 6.6
Outside diameter Torque

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Thepower cord connected to theunit should beselected according to thefollowing
specifications
Thepower connecting cableconnecting theindoorand outdoorunit should beselected according
to thefollowing specifications
1.5 2.5
1.0
roodnI roodnI roodnI)A(tinU
1.5 2.5
NORMAL CROSS -
SECTIONAL AREA
Grade
(mm
2
)
1.0
NORMAL CROSS
-SECTIONAL AREA
Grade
(mm
2
)
2.5kw(9-12k btu/h) 5.2(18k btu/h) 7kw(24k btu/h)
2.5kw(9-12k btu/h)
5.2(18k btu/h)
7kw(24k btu/h)
• The above circuit diagram is subject to change without notice.
• The earth wire should be longer than the common wires.
• When installing, refer to the circuit diagram behind the panel front of the indoor unit.
• Connect the wires firmly so that they may not be pulled out easily.
• Connect the wires according to color codes, referring to the wiring diagram.
• When the power cord is to be replaced, replacement work shall be performed by authorized
personnel only using only genuine replacement parts.
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Installation Manual 19
ENGLISH
Installation
Outdoor unit
1. Connect the wires to the terminals on the
control board individually.
2. Secure the cable onto the control board with
the cord clamp.
3. Use a recognized circuit breaker between the
power source and the unit.
A disconnecting device to adequately
disconnect all supply lines must be fitted.
According to the confirmation of the above conditions, prepare the wiring as follows.
1.
Never fail to have an individual power circuit specifically for the air conditioner. As for the
method of wiring, be guided by the circuit diagram posted on the inside of control cover.
2. The screw which fasten the wiring in the casing of electrical fittings are liable to come loose from
vibrations to which the unit is subjected during the course of transportation. Check them and
make sure that they are all tightly fastened. (If they are loose, it could cause burn-out of the wires.)
3. Specification of power source.
4. Confirm that electrical capacity is sufficient.
5. See that the starting voltage is maintained at more than 90 percent of the rated
voltage marked on the name plate.
6. Confirm that the cable thickness is as specified in the power source specification.
(Particularly note the relation between cable length and thickness.
7. Always install an earth leakage circuit breaker in a wet or moist area.
8. The following would be caused by voltage drop.
• Vibration of a magnetic switch, which will damage the contact point, fuse breaking, disturbance of
the normal function of the overload.
9. The means for disconnection from a power supply shall be incorporated in the fixed wiring
and have an air gap contact separation of at least 3mm in each active(phase) conductors.
2.5kw(9-12k btu/h) 5.2(18k btu/h) 7kw(24k btu/h)
20 30
15
Circuit Breaker(A)
Grade
Provide the circuit breaker between power
source and the unit as shown by
Air
Conditioner
Main power source
Circuit Breaker
Use a circuit breake
or time delay fuse.
Terminal block
Over 5mm
Cover control
Tubing cover
Connecting cable
Outdoor Unit
Power cable
(On-off only)

20 Air Conditioner
Installation
Checking the Drainage
To check the drainage.
1. Pour a glass of water on the evaporator.
2. Ensure the water flows through the drain
hose of the indoor unit without any leakage
and goes out the drain exit.
Drain piping
1. The drain hose should point downward for
easy drain flow.
2. Do not make drain piping like the following.
Drain pan
Drain
hose
Leakage
checking
Connecting area
drain hose
Leakage
checking
Downward slope
Accumulated
Do not raise drain water Less than
Air Tip of drain hose 50mm gap
dipped in water
Water Water Water
Waving
leakage leakage leakage Ditch