LG Artcool Stylist G09WL, Artcool Stylist G12WL Installation Manual
• Do not cool excessively indoors. This may be harmful for your health and may consume more
electricity.
• Block sunlight with blinds or curtains while you are operating the air conditioner.
• Keep doors or windows closed tightly while you are operating the air conditioner.
• Adjust the direction of the air flow vertically or horizontally to circulate indoor air.
• Speed up the fan to cool or warm indoor air quickly, in a short period of time.
• Open windows regularly for ventilation as the indoor air quality may deteriorate if the air conditioner is used for many hours.
• Clean the air filter once every 2 weeks. Dust and impurities collected in the air filter may block the
air flow or weaken the cooling / dehumidifying functions.
For your records
Staple your receipt to this page in case you need it to prove the date of purchase or for warranty
purposes. Write the model number and the serial number here:
Model number :
Serial number :
You can find them on a label on the side of each unit.
Dealer’s name :
Date of purchase :
Here are some tips that will help you minimize the power consumption when you use the air
conditioner. You can use your air conditioner more efficiently by referring to the instructions
below:
TIPS FOR SAVING ENERGY
• Do not use copper pipes having a collapsed.
- Otherwise, the expansion valve or capillary tube may become blocked with contaminants.
• For R410A model, use piping, flare nut and tools which is specified for R410A refrigerant.
- Using of (R22) piping, flare nut and tools may cause abnormally high pressure in the refrigerant
cycle (piping), and possibly result in explosion and injury.
• It is desirable that the amount of residual oil less than 40 mg/10m.
• If air enters the refrigerant system, an excessively high pressure results, causing equipment damage or injury.
• Always check for gas (refrigerant) leakage after installation or repair of product. Low refrigerant levels may cause failure of product.
• Ensure that you grab the chassis when you lift the unit.
- If you lift the unit with the panel held, it may result in serious injury or product failure.
• 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 fire, electric shock, explosion or death.
Operation
• 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.
• 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.
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
Sleeve
Installation plate
Bushing-Sleeve
Putty(Gum Type Sealant)
Bend the pipe as closely
on the wall as possible,
but be careful that it
doesn't break.
Tapping Direction
NOTE
!
• You should purchase the installation parts.
* The feature can be changed according a type of model.
IMPORTANT SAFETY INSTRUCTIONS
READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE.
Always comply with the following precautions to avoid dangerous situations and ensure peak
performance of your product.
WARNING
It can result in serious injury or death when the directions are ignored.
CAUTION
It can result in minor injury or product damage when the directions are ignored.
WARNING
• Installation or repairs made by unqualified persons can result in hazards to you and others.
• Air conditioner Shall be installed in accordance with national wiring regulations.
• If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly
qualified persons in order to avoid a hazard.
• The information contained in the manual is intended for use by a qualified service technician familiar
with safety procedures and equipped with the proper tools and test instruments.
• Failure to carefully read and follow all instructions in this manual can result in equipment malfunction, property damage, personal injury and/or death.
Installation
• 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.
• 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.
• Thickness of copper pipes used are as shown “Flaring work” Table.
- Never use copper pipes thinner than that in the table even when it is available on the market
!
!
!
• 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 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.
CAUTION
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.
Operation
• 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.
!
Symbols used in this Manual
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.
Features
!
INTRODUCTION
!
Air Intake Vents
Connecting
Wires
Base Plate
Piping
Drain Hose
Air Outlet Vents
Front Panel
Signal Receiver
Air Filter
On/Off Button
Air Discharge
* The feature can be changed according to type of model.
Select the best Location
- There should not be any heat or steam near
the unit.
- Select a place where there are no obstacles
around of the unit.
- Make sure that condensation drainage can
be conveniently routed away.
- Do not install near a doorway.
- Ensure that the interval between a wall and
the left (or right) of the unit is more than
500mm. The unit should be installed as high
as possible on the wall, allowing a minimum
of 200mm from ceiling.
- Use a metal detector to locate studs to prevent unnecessary damage to the wall.
* The feature can be changed according a
type of model.
- 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 space around the back and
sides is more than 300mm. The space in
front of the unit should be more than 700mm
of space.
- Do not place animals and plants in the path
of the warm air.
- Take the weight of the air conditioner into
account and select a place where noise and
vibration are minimum.
- Select a place where the warm air and noise
from the air conditioner do not disturb
neighbors.
More than 200
More than
500
More than
500
(Unit : mm)
INSTALLATION
More than
300
More than
300
Sunroof
Fence or
obst
a
cle
s
More than
700
More than
600
(Unit : mm)
WARNING
!
• Install the installation plate on a flat wall.
If a wall is uneven, please make the surface of wall flat. Otherwise, it may
cause abnormal noise.
• Ensure that the interval between a wall
and the left of the unit is more than
500mm. Otherwise, it may be difficult to
take out/in a air filter.
Indoor unit
Outdoor unit
INSTALLATION TOOLS
INSTALLATION PARTS
Name Quantity Shape
Installation plate 1 EA
Type "A" screw
5 EA
The feature can be changed according to a type of model.
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
* The provided parts can be changed according to a type of model.
Front
panel
Preparing Work for Installation
1
Pull out the lower section of front panel and
lift it up.
1
To detach the SVC cover, pull the two
screw covers and remove the two screws at
the lower part.
2
Pull down the SVC cover.
1
Remove the one taptite screw and one
ground screw at the right side part.
2
Detach the terminal block cover.
1. Detach the clamp for piping.
Open panel front
Remove the service cover
Remove the Terminal block cover
Detach the clamp
1
2
Type C
Ground Screw
Clamp
Bar
Copper pipe
Clamp handle
Red arrow mark
Cone
Yoke
Handle
Bar
"A"
Inclined
Inside is shiny without scratches
Smooth all round
Even length
all round
Surface
damaged
Cracked Uneven
thickness
= Improper flaring =
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.
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.
Connecting the Piping
Preparing the indoor unit's piping and drain
hose for installation through the wall.
1 Route the indoor tubing and the drain hose
in the direction of rear left or right.
Pipe
Reamer
Point down
Flare nut
Copper tube
Outside diameter A Thickness
mm inch mm mm
Ø6.35 1/4" 1.1~1.3 0.7
Ø9.52 3/8" 1.5~1.7 0.8
Ø12.7 1/2" 1.6~1.8 0.8
Ø15.88 5/8" 1.6~1.8 1.0
Backwards
Left
Right
Downwards
1 Hook the indoor unit onto the upper por-
tion of the installation plate.(engage the
two 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.
* The feature can be changed according a
type of model.
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.
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.
<Right side piping>
<Left side piping>
Installation of Indoor Unit
Piping
CAUTION
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.
!
CAUTION
Ensure that you put the boss of the chassis on the prop of the installation plate
and mate the hole of the chassis with the
hole of the installation plate.
!
Boss
Prop
BR BL
GN/YL
BK
Terminal
block
Connecting
cable
Cable retainer
Connecting
cable
Gas side piping
Liquid side piping
Drain hose
Loop
Connecting
cable
Gas side piping
Liquid side piping
Drain hose
Loop
1 Assemble the clamp for piping and screw
it up.
2 Assemble the terminal block cover.
3 Screw up the terminal block cover as the
initial condition. (Screw up the terminal
block cover and the inlet grille with type
“C” screw at “a” position, and the terminal block cover and the case with the
ground screw at “b” position.)
4 Finish the assembly by screwing the unit
to the installation plate by using two
pieces of type "C" screws.
5 Assemble the service cover and screw it
up.
6 Assemble the front panel.
Finishing the indoor unit
installation
Front panel
Type C
(“a” position)
Ground Screw
(“b” position)
Clamp
Fixing installation Plate
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.
Drill a Hole in the Wall
- Drill the piping hole with a Ø55mm hole core
drill. Drill the piping hole at either the right or
the left with the hole slightly slanted to the
outdoor side.
Flaring Work
Main cause for gas leakage is due to defect of
flaring work. Carry out correct flaring work in
the following procedure.
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.
Cut the pipes and the cable
5-7mm
(3/16"~5/16")
Indoor
WALL
Outdoor
Copper
pipe
90°
Slanted Uneven Rough
Installation Plate
Chassis
hook
Type “A” Screws
Left rear piping
Right rear piping
Place a level on raised tab
Installation Plate
Unit bottom line
Unit outline
Ø55 Ø55
20
30
40 43
(Unit : mm)
28737 37287
CAUTION
Ensure that the piping hole is positioned
inside the unit bottom line.
!
CAUTION
Installation Information. For right piping.
Follow the instruction above.
!
- Press on the tubing cover and unfold the
tubing to downward slowly. And then bend
to the left side slowly.
- Following bending case from right to left
directly may cause damage to the tubing.
* The feature can be changed according a
type of model.
1 Remove the rubber stopple in the desired
drain direction.
2 Insert drain hose into the handle of drain
pan, and join drain hose and connecting
hose according to the figure by.
<Right side piping>
<Left side piping>
Good case
Bad case
Drain hose junction
Connecting
part
Adhesive
Drain
hose
rubber cap
Only the
desired direction
NOTE
!
• When installing drain hose, make sure
the drain hose goes through the nearest
pipe hole.
Insulation material
Gas Pipe
Liquid Pipe
Cutting Line
Cutting Line
Good Case Bad Case
* Tubing cutting line have to be upward.
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)
Connecting the installation pipe
and drain hose to the indoor unit.
1 Align the center of the pipes and sufficient-
ly 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
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 Set the tubing cutting line upward.
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.
Wrench
Indoor unit tubing
Open-end wrench
(fixed)
Connection
pipe
Flare nut
Vinyl tape(narrow)
Adhesive
Drain pipe
Indoor unit drain hose
Indoor unit tubing Flare nut Pipes
Outside Diameter Torque
mm inch kgf·cm N·m
Ø6.35 1/4 180~250 17.6~24.5
Ø9.52 3/8 340~420 33.3~41.2
Ø12.7 1/2 550~660 53.9~64.7
Ø15.88 5/8 630~820 61.7~80.4
Connecting the Piping
1 Remove the tubing cover from the unit by
loosening the screw.
2 Align the center of the pipings and
sufficiently tighten the flare nut by hand.
3 Finally, tighten the flare nut with torque
wrench until the wrench clicks.
- When tightening the flare nut with torque
wrench, ensure the direction for tightening follows the arrow on the wrench.
Gas side piping
(Bigger diameter)
Liquid side piping
(Smaller diameter)
Torque wrench
Tubing cover
Outdoor unit
Outside Diameter Torque
mm inch kgf·cm N·m
Ø6.35 1/4 180~250 17.6~24.5
Ø9.52 3/8 340~420 33.3~41.2
Ø12.7 1/2 550~660 53.9~64.7
Ø15.88 5/8 630~820 61.7~80.4
1 2 3
54 6 7
INSTALLATION MANUAL AIR CONDITIONER
TYPE : WALL MOUNTED
P/No : MFL67986601_v2
ENGLISH
Connecting the Cables
Connect the cable to the indoor unit by connecting the wires to the terminals on the control board individually according to the outdoor
unit connection. (Ensure that the color of the
wires of the outdoor unit and the terminal No.
are the same as those of the indoor unit.)
The power connecting cable with indoor and
outdoor unit should be selected according to
the following national wiring regulations.
The supply cords of parts of appliances for
outdoor use shall not be lighter than polychloroprene sheathed flexible cord.
(code designation 60245 IEC 57, H05RN-F)
Outdoor unit
- Connect the wires to the terminals on the
control board individually.
- Secure the cable onto the control board with
the cord clamp.
- Use a recognized circuit breaker between
the power source and the unit.
A disconnecting device to adequately disconnect all supply lines must be fitted.
45±5mm
GN/
YL
20mm
10±
3mm
(mm2)
NOMINAL CROSS -
SECTIONAL AREA
Grade
2.5kW~3.5kW
1.0
(mm2)
NOMINAL CROSS
-SECTIONAL AREA
Grade
2.5kW~3.5kW
1.0
Circuit Breaker(A)
Grade
2.5kW~3.5kW
15
35±5mm
GN/
YL
20mm
10±3mm
CAUTION
- The circuit diagram is a subject to
change without notice.
- The earth wire should be longer than the
common wires.
- When installing, refer to the circuit
diagram on the front panel.
- 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.
!
CAUTION
The power cord connected to unit should
be selected according to the following
national wiring regulations.
The supply cords of parts of appliances
for outdoor use shall not be lighter than
polychloroprene sheathed flexible cord.
(code designation 60245 IEC 57, H05RN-F)
!
Checking 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.
1 The drain hose should point downward for
easy drain flow.
2 Do not make drain piping like the
following.
* The feature can be changed according a
type of model.
Installing drain piping of the
outdoor unit
Depending on installation site, it may be
required to install drain plug for drainage
(Supplied with the unit). In cold areas, do not
use a drain hose with the outdoor unit.
Otherwise, drain water may freeze, impairing
the heating performance.
1 See the figure below for installation of the
drain plug.
A Drain nipple
B Drain cap
C Drain washer
2 Connect a field supplied vinyl hose to the
drain nipple (A). If the hose is too long and
hangs down, fix it carefully to prevent
kinks.
To check the drainage
Drain piping
Connecting area
drain hose
Leakage
checking
Drain
Hose
Leakage
checking
Drain Pan
Downward slope
Do not raise
Water
leakage
Accumulated
drain water
Air
Waving
Water
leakage
Tip of drain hose
dipped in water
Water
leakage
Ditch
Less than
50mm gap
B B B B
BB
B
A
C
* The feature can be changed according to a
type of model.
* The provided parts can be changed accord-
ing to a type of model.
2 Leak test
- Connect the manifold valve(with pressure
gauges) and dry nitrogen gas cylinder to
this service port with charge hoses.
- Do a leak test of all joints of the tubing (both
indoor and outdoor) and both gas and liquid
side service valves. Bubbles indicate a leak.
Be sure to wipe off the soap with a clean
cloth.
- After the system is found to be free of leaks,
relieve the nitrogen pressure by loosening
the charge hose connector at the nitrogen
cylinder. When the system pressure is
reduced to normal, disconnect the hose from
the cylinder.
- Remove the caps from the 2-way and 3-way
valves.
- Remove the service-port cap from the 3-way
valve.
- Apply a soap water or a liquid neutral detergent on the indoor unit connection or outdoor unit connections by a soft brush to
check for leakage of the connecting points of
the piping.
- If bubbles come out, the pipes have leakage
- Connect the charge hose end described in
the preceding steps to the vacuum pump to
evacuate the tubing and indoor unit. Confirm
the "Lo" knob of the pressure Gauge is open.
Then, run the vacuum pump. The operation
time for evacuation varies with tubing length
and capacity of the pump. The following
table shows the time required for evacuation.
Soap water method
Evacuation
CAUTION
Be sure to use a manifold valve for air purging. If it is not available, use a stop valve for
this purpose. The knob of the 3-way valve
must always be kept close.
- Pressurize the system to maximum
17.6kg/cm2G (R-22 model) or 28.1kg/cm2G
(R-410A model) with dry nitrogen gas and
close the cylinder valve when the gauge
reading reaches 17.6kg/cm2G (R-22 model)
or 28.1kg/cm2G (R-410A model). Next step
is leak test with liquid soap.
!
CAUTION
To avoid nitrogen entering the refrigerant
system in a liquid state, the top of the cylinder must be higher than its bottom when
you pressurize the system. Usually, the
cylinder is used in a vertical standing position.
!
WARNING
!
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.
Lo Hi
Indoor unit
Outdoor unit
Manifold valve
Charge hose
Nitrogen gas
cylinder(in vertical
standing position)
Pressure
gauge
Cap
Gas side
Liquid side
3-way valve
(Close)
2-way valve
(Close)
Refrigerant
Outside ambient
TEMP.
The pressure of the gas
side service valve.
R-22 35°C (95°F)
4~5kg/cm2G
(56.8~71.0 P.S.I.G.)
R-410A 35°C (95°F)
8.5~9.5kg/cm2G
(120~135 P.S.I.G.)
CAUTION
Be sure to perform Pump Down procedure
in the cooling mode.
!
NOTE
!
If the actual pressure is higher than
shown, the system is most likely overcharged, and charge should be removed.
If the actual pressure are lower than
shown, the system is most likely undercharged, and charge should be added.
Settlement of outdoor unit
1 Fix the outdoor unit with a bolt and nut
(ø10mm) tightly and horizontally on a concrete or rigid mount.
2 When installing on the wall, roof or
rooftop, anchor the mounting base securely with a nail or wire assuming the influence of wind and earthquake.
3 If the vibration of the unit is transmitted to
the pipe, secure the unit with an anti-vibration rubber.
Evaluation of the performance
Operate the unit for 15~20 minutes, then
check the system refrigerant charge:
1 Measure the pressure of the gas side serv-
ice valve.
2 Measure the air temperature from inlet
and outlet of air conditioner.
3 Ensure the difference between the inlet
and outlet temperature is more than 8°C.
4 For reference; the gas side pressure at
optimum condition is shown on table
(cooling)
The air conditioner is now ready to use.
Pump Down
This is performed when the unit is relocated
or the refrigerant circuit is serviced.
Pump Down means collecting all refrigerant
into the outdoor unit without the loss of refrigerant.
Pump Down Procedure
- Connect a low-pressure gauge manifold hose
to the charge port on the gas side service
valve.
- Open the gas side service valve halfway and
purge the air in the manifold hose using the
refrigerant.
- Close the liquid side service valve(all the
way).
- Turn on the unit's operating switch and start
the cooling operation.
- When the low-pressure gauge reading
becomes 1 to 0.5kg/cm2G(14.2 to 7.1
P.S.I.G.), fully close the gas side valve and
then quickly turn off the unit. Now Pump
Down procedure is completed, and all refrigerant is collected into the outdoor unit.
Discharge
temperature
Discharge air
Intake temperature
Bolt
Tubing connection
Cord clamp
Terminal block
Wiring
diagram
Tubing
cover
Air
Conditioner
Main power source
Circuit breaker
Use a circuit breake
or time delay fuse.
CAUTION
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 suffi-
cient.
5 See that the starting voltage is main-
tained 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.
!
CAUTION
Provide the circuit breaker between
power source and the unit as shown by
!
Forming the Piping
Form the piping by wrapping the connecting
portion of the indoor unit with insulation
material and secure it with two kinds of vinyl
tapes.
- If you want to connect an additional drain
hose, the end of the drain outlet should be
routed above the ground. Secure the drain
hose appropriately.
In cases where the outdoor unit is installed
below the indoor unit perform the following.
1 Tape the piping, drain hose and connecting
cable from down to up.
2 Secure the tapped piping along the exteri-
or wall using saddle or equivalent.
In cases where the Outdoor unit is installed
above the Indoor unit perform the following.
1 Tape the piping and connecting cable from
down to up.
2 Secure the taped piping along the exterior
wall. Form a trap to prevent water entering
the room.
3 Fix the piping onto the wall using saddle or
equivalent.
Air Purging
The air and moisture remaining in the
refrigerant system have undesirable effects as
indicated below.
1 Pressure in the system rises.
2 Operating current rises.
3 Cooling(or heating) efficiency drops.
4 Moisture in the refrigerant circuit may
freeze and block capillary tubing.
5 Water may lead to corrosion of parts in the
refrigeration system.
Therefore, after evacuating the system, take a
leak test for the piping and tubing between
the indoor and outdoor unit.
Air purging with vacuum pump
1 Preparation
- Check that each tube(both liquid and gas
side tubes) between the indoor and outdoor units have been properly connected
and all wiring for the test run has been
completed. Remove the service valve
caps from both the gas and the liquid side
on the outdoor unit. Note that both the
liquid and the gas side service valves on
the outdoor unit are kept closed at this
stage.
Taping
Saddle
Drain hose
Pipings
Connecting cable
Seal a small opening
around the pipings
with gum type sealant.
Trap is required to prevent water
from entering into electrical parts.
Drain hose
Vinyl tape(narrow)
Pipe
Wrap with
vinyl tape(wide)
Seal a small opening
around the pipings
with gum type sealant.
Trap
Trap
- When the desired vacuum is reached, close
the knob of the 3-way valve and stop the
vacuum pump.
- With a service valve wrench, turn the valve
of liquid side counter-clockwise to fully open
the valve
- Turn the valve of gas side counter clockwise
to fully open the valve
- Loosen the charge hose connected to the
gas side service port slightly to release the
pressure, then remove the hose.
- Replace the flare nut and its bonnet on the
gas side service port and fasten the flare nut
securely with an adjustable wrench. This
process is very important to prevent leakage
from the system
- Replace the valve caps at both gas and liquid
side service valves and fasten them tight.
This completes air purging with a vacuum
pump.
- Replace the pipe cover to the outdoor unit by
one screw. Now the air conditioner is ready
for test run.
Finishing the Job
Required time for evacuation when 30 gal/h
vacuum pump is used
If tubing length is
less than 10m (33 ft)
If tubing length is
longer than 10m
(33 ft)
10 min. or more 15 min. or more
Outdoor unit
Lo Hi
Manifold valve
Vacuum pump
Pressure
gauge
Open Close
Test Running
- Check that all tubing and wiring are properly
connected.
- Check that the gas and liquid side service
valves are fully open.
1 Open the bottom of remote control with
turning it clockwise.
2 Insert the battery. (Match the metal termi-
nals between remote control and battery.)
3 Align the lines with each other, close the
bottom of the remote control with turning
it counterclockwise.
Prepare remote controller
NOTE
!
• Remove the batteries from the remote
controller if the system is not used for a
long time
Metal terminal
1
2
Bottom
CAUTION
- Air conditioners should not be installed in
areas where corrosive gases, such as acid
or alkaline gas, are produced.
- Do not install the product where it could be
exposed to sea wind (salty wind) directly. It
can result corrosion on the product.
Corrosion, particularly on the condenser
and evaporator fins, could cause product
malfunction or inefficient performance.
- If outdoor unit is installed close to the seaside, it should avoid direct exposure to the
sea wind. Otherwise it needs additional
anticorrosion treatment on the heat
exchanger.
!
Installation guide at the
seaside
Selecting the location
(Outdoor Unit)
If the outdoor unit is to be installed close to
the seaside, then direct exposure to the sea
wind should be avoided.
Install the outdoor unit on the opposite side of
the sea wind direction.
In case of installing the outdoor unit on the
sea side, setup a windbreak to prevent sea
wind.
- It should be strong enough like concrete to
prevent the sea wind from the sea.
- The height and width should be more than
150% of the outdoor unit.
- Keep more than 70 cm of space between
outdoor unit and the windbreak for easy air
flow.
Select a well-drained place.
Sea wind
Sea wind
- If you can’t meet above guide line in the
seaside installation, please contact LG
Electronics for the additional
anticorrosion treatment.
- Periodic ( more than once/year ) cleaning
of the dust or salt particles stuck on the
heat exchanger by using water
* Do not use seawater when you clean up
the heat exchanger.
Sea wind
Windbreak
Piping Length and Elevation
Outdoor unit
Indoor unit
Outdoor unit
Indoor unit
A
B
A
B
CAUTION
Capacity is based on standard length and maximum allowable length is on the basis of reliability. Additional refrigerant must be charged after 7.5m (24.61ft)
!
Capacity
(kW)
Pipe Size
Standard
Length
(m)
Max.
Length
Ⓐ (m)
Max.
Elevation
Ⓑ (m)
Additional
Refrigerant
(g/m)
GAS LIQUID
mm inch mm inch
2.5~3.5 Ø9.52 3/8 Ø6.35 1/4 7.5 15 10 20
Operation ranges
The table below indicates the temperature ranges the air conditioner can be Operated within.
Mode Indoor temperature Outdoor temperature
Cooling 18°C ~ 32°C -10°C~ 48°C
Heating 16°C~ 30°C -15°C ~ 24°C
- Note (Memo) -
98 10 11
12
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