LG LSN-LSU-90-120HYV User 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 condi-
tioner 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 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.
• 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 ex-
plosions.
Operation
• Do not store or use flammable gas or combustibles near the product.
- There is risk of fire or failure of product.
CAUTION
Installation
• 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 neigh-
borhoods.
- 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.
!
Drill a Hole in the Wall
- Drill the piping hole with a ø65mm 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.
Cut the pipes and the cable
1Use the piping kit accessory or the pipes
purchased locally.
2Measure the distance between the indoor
and the outdoor unit.
3Cut the pipes a little longer than measured
distance.
4Cut the cable 1.5m longer than the pipe
length.
5-7mm
(3/16"~5/16")
Indoor
WALL
Outdoor
Copper
pipe
90°
Slanted Uneven Rough
Indoor unit
Fixing Installation Plate
The wall you select should be strong and solid
enough to prevent vibration.
1Before installation, confirm the position of
a screw between chassis and Installation
plate.
2Mount 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 .
3Measure the wall and mark the centerline.
It is also important to use caution concern-
ing 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.
Ø65
A Type : 95
B Type : 170
A Type : 133
B Type : 123
A Type B Type
Right rear piping
Left rear piping
Place a level on raised tab
Unit
Outline
217
175
(Unit : mm)
A Type : 442
B Type : 434
A Type : 442
B Type : 439
Ø65
Ø65
Ø65
Installation Plate
Installation Plate
Installation Plate
Chassis
Hook
Type "A" Screws
A-Type
B-Type
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.
• Installation MUST conform with local building codes or, in the absence of local codes, with
the Nation Electrical Code NFPA 70/ANSI C1-1003 or current edition and Canadian Electrical
Code Part1 CSA C.22.1.
• 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 mal-
function, property damage, personal injury and/or death.
Installation
• 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 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.
• 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 modify or extend the power cable.
- There is risk of fire 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 win-
dow is left open.
- Moisture may condense and wet or damage furniture.
• 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 con-
denser and evaporator.
• For installation, always contact the dealer or an Authorized Service Center.
- There is risk of fire, electric shock, explosion, or injury.
!
!
!
Name Quantity Shape
Installation plate 1 EA
Type "A" screw
5 EA
Type "B" screw
2 EA
Type "C" screw
2 EA
Remote control
holder
1 EA
The feature can be changed according to a type of model.
Screws for fixing panels are attached to decoration panel.
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 TOOLS
INSTALLATION PARTS
Connecting cable
(Optional Parts)
Gas side piping (Optional Parts)
Liquid side piping (Optional Parts)
Additional drain pipe
Vinyl tape (Narrow)
Drain Hose
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
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.
NOTE
!
• You should purchase the installation parts.
* The feature can be changed according to a type of model.
INSTALLATION MAP
Outside diameter A
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
1Firmly hold copper pipe in a bar with the di-
mension shown in the table below .
2Carry out flaring work with the flaring tool.
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
Inclined
Inside is shiny without scratches
Smooth all round
Even length
all round
Surface
damaged
Cracked Uneven
thickness
= Improper flaring =
Check
1Compare the flared work with the figure
by.
2If a flared section is defective, cut it off
and do flaring work again.
Connecting the Piping
1Open the panel of the indoor unit.
2Remove the chassis cover from the unit by
loosing 3 screws.
Chassis cover
Bar
Copper pipe
Clamp handle Red arrow mark
Cone
Yoke
Handle
Bar
"A"
Select the best Location
Indoor unit
- 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
100mm. 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 pre-
vent unnecessary damage to the wall.
* The feature can be changed according to a
type of model.
More than 200(7.9in)
More than
100(3.9in)
More than
2400(94.4in)
More than
100(3.9in)
(Unit : mm)
CAUTION
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)
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 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 ac-
count and select a place where noise and vi-
bration are minimum.
- Select a place where the warm air and noise
from the air conditioner do not disturb neigh-
bors.
INSTALLATION
3Pull back the tubing holder.
4Remove pipe port cover and positioning
the tubing
* The feature can be changed according to a
type of model.
Good case
- Press on the tubing cover and unfold the
tubing to downward slowly. And then bend
to the left side slowly.
Right
Tubing holder
Downwards
Left
Backwards
Indoor unit back side view
CAUTION
Installation Information. For right piping.
Follow the instruction above.
!
Bad case
- Following bending case from right to left di-
rectly may cause damage to the tubing.
* The feature can be changed according to a
type of model.
- Before bending the tubing, set the conduit
like picture below by using the bracket and
black screws from accessory kit.
Outside diameter Torque
Indoor unit tubing Flare nut Pipes
Connecting the installation pipe
and drain hose to the indoor unit.
1Align the center of the pipes and suffi-
ciently tighten the flare nut by hand
2Tighten the flare nut with a wrench
mm inch kgf.m
Ø6.35 1/4 1.8~2.5
Ø9.52 3/8 3.4~4.2
Ø12.7 1/2 5.5~6.5
Ø15.88 5/8 6.3~8.2
Ø19.05 3/4 9.9~12.1
3. When needed to extend the drain hose of
indoor unit, assembly the drain pipe as
shown on the drawing
Wrench
Indoor unit tubing
Open-end wrench
(fixed)
Connection
pipe
Flare nut
Vinyl tape(narrow)
Adhesive
Drain pipe
Indoor unit drain hose
Wrap the insulation material
around the connecting portion.
1Overlap the connection pipe insulation ma-
terial and the indoor unit pipe insulation
material. Bind them together with vinyl
tape so that there may be no gap.
2Set the tubing cutting line upward.
Wrap the area which accommodates the
rear piping housing section with vinyl tape.
Insulation material
Gas Pipe Liquid Pipe
Cutting Line
Cutting Line
Good Case Bad Case
* Tubing cutting line have to be upward.
CAUTION
If the drain hose is routed inside the room
insulate the hose with an insulation mate-
rial* so that dripping from sweating (con-
densation) will not damage furniture or
floors.
* Foamed polyethylene or equivalent is
recommended.
!
CAUTION
Must use the elbow type
(L-Type) conduit
Method:
1. Disassemble bracket
(from indoor unit)
2. Assemble it with conduit
3. Reassemble it with
indoor unit..
!Connecting the Cables
Connect the cable to the indoor unit by con-
necting the wires to the terminals on the con-
trol 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.)
- 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.
Liquid side piping
(Smaller diameter)
Torque wrench
Gas side piping
(Bigger diameter)
Outdoor unit
Outside diameter Torque
mm inch kgf.m
Ø6.35 1/4 1.8~2.5
Ø9.52 3/8 3.4~4.2
Ø12.7 1/2 5.5~6.5
Ø15.88 5/8 6.3~8.2
Ø19.05 3/4 9.9~12.1
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 dia-
gram on the chassis cover.
- 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
- Assemble it with conduit.
!
CAUTION
According to the confirmation of the
above conditions, prepare the wiring as
follows.
1Never fail to have an individual power
circuit specifically for the air condi-
tioner. As for the method of wiring, be
guided by the circuit diagram posted
on the inside of control cover.
2The screw which fasten the wiring in
the casing of electrical fittings are li-
able 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.)
3Specification of power source.
4Confirm that electrical capacity is suffi-
cient.
5See that the starting voltage is main-
tained at more than 90 percent of the
rated voltage marked on the name
plate.
6Confirm that the cable thickness is as
specified in the power source specifi-
cation.
(Particularly note the relation between
cable length and thickness.
7Always install an earth leakage circuit
breaker in a wet or moist area.
8The following would be caused by volt-
age drop.
- Vibration of a magnetic switch, which
will damage the contact point, fuse
breaking, disturbance of the normal
function of the overload.
9The 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.
!Checking the Drainage
To check the drainage.
1Pour a glass of water on the evaporator.
2Ensure the water flows through the drain
hose of the indoor unit without any leak-
age and goes out the drain exit.
Drain piping
1The drain hose should point downward for
easy drain flow.
Drain pan
Drain
hose
Leakage
checking
Connecting area
drain hose
Leakage
checking
Downward slope
*The feature can be changed according a type
of model.
Installation of Indoor Unit
1Hook the indoor unit onto the upper por-
tion 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.
2Unlock the tubing holder from the chassis
and mount between the chassis and instal-
lation plate in order to separate the bottom
side of the indoor unit from the wall.
* The feature can be changed according to a
type of model.
Piping
1Raise the cover of terminal block.
2Insert the connecting cable through the
bottom side of indoor unit and connect the
cable. (You can see detail contents in ‘Con-
necting the cables’ section.)
<Left side piping>
Cover
View
Cable retainer
Terminal block
Connecting cable
Installation plate
Tubing Holder
<Right side piping>
3Secure the cable onto the control board
with the cable retainer.
4Close the cover of control box.
5Tape the tubing pipe, drain hose and the
conduit. Be sure that the drain hose is lo-
cated at the lowest side of the bundle.
Locating at the upper side can cause over-
flow from the drain pan through the inside
of the unit.
View
Cover
Cable retainer
Terminal block
Connecting cable
<Left side piping>
<Right side piping>
* The feature can be changed according to a
type of model.
Connecting pipe
Conduit
Tape
Drain hose
Drain hose
Connecting pipe
Tape
Conduit
Drain hose
NOTE
!
Insert the drain hose at left side when
you use left side piping type.
Finishing the indoor unit
installation
1Mount the tubing holder in the original
positon.
2Ensure that the hooks are properly seated
on the installation plate by moving it left
and right.
3Press the lower left and right sides of the
unit against the installation plate until the
hooks engage into their slots (clicking
sound).
4Finish the assembly by screwing the unit
to the installation plate by using two pieces
of type "C" screws. And assemble a chas-
sis cover.
Type 'C' screw
Outdoor unit
Connecting the Piping
- Remove the tubing cover from the unit by
loosening the screw.
- Align the center of the pipings and suffi-
ciently tighten the flare nut by hand.
Tubing cover
3Bundle 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.
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)
CAUTION
• Before finishing installation of the indoor
unit, seal the hole of a wall except the
pipe’s ways to prevent condensate from
inflow of outdoor air.
!
The power cord connected to the outdoor
unit should be complied with the
following specifications (UL recognized or
CSA certified).
(mm2)
10±3mm
20mm
GN/YL
AWG_“A”
Outdoor unit
Terminal block
Over 5mm
(0.2")
Cover control
Conduit panel
Connecting
cable
Power supply
cord
Air
Conditioner
Main power source
Circuit Breaker
Use a circuit breake
or time delay fuse.
10±3mm
20mm
GN/YL
AWG_“B”
The power connecting cable connected to the
indoor and outdoor unit should be complied
with the following specifications (UL
recognized or CSA certified).
- 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.
CAUTION
Provide the circuit breaker between
power source and the unit as shown by
!
CAUTION
!
Power Capacity(Btu/h)
9K/12k
"A" 14
Connecting
Cable
Capacity(Btu/h)
9k/24k
"B" 18
(mm2)
Connecting cable
Power supply cable
Circuit Breaker(A)
Capacity(Btu/h)
9K/12k
15
*The feature can be changed according a type
of model.
2Do not make drain piping like the following.
* The feature can be changed according to a
type of model.
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
Forming the Piping
In cases where the outdoor unit is installed
below the indoor unit perform the following.
1Tape the piping, drain hose and connecting
cable from down to up.
2Secure the tapped piping along the exterior
wall using saddle or equivalent.
Taping
Drain hose
Pipings
Connecting cable
(Conduit)
Trap is required to prevent water
from entering into electrical parts.
Seal small openings
around pipings with a
gum type sealant.
*The feature can be changed according a type
of model.
1 2 3
54 6 7
INSTALLATION MANUAL AIR CONDITIONER
TYPE : WALL MOUNTED
P/No : MFL67502101
ENGLISH
LSN-LSU-90-120HYV

In cases where the outdoor unit is installed
above the Indoor unit perform the following.
1Tape the piping and connecting cable from
down to up.
2Secure the taped piping along the exterior
wall. Form a trap to prevent water entering
the room.
3Fix the piping onto the wall using saddle or
equivalent
Seal a small opening
around the pipings
with gum type sealant.
Trap
Trap
- 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.
- Leak test
Connect the manifold valve(with pressure
gauges) and dry nitrogen gas cylinder to this
service port with charge hoses.
Air purging with vacuum pump
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 not more than
150 P.S.I.G. with dry nitrogen gas and
close the cylinder valve when the gauge
reading reaches 150 P.S.I.G. Next, test
for leaks 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 explo-
sion.
- Inert gas (nitrogen) should be
used when you check plumbing
leaks, cleaning or repairs of pipes etc.
If you are using combustible gases includ-
ing oxygen, product may have the risk of
fires and explosions.
!
Air Purging
The air and moisture remaining in the refriger-
ant system have undesirable effects as indi-
cated below.
- Pressure in the system rises.
- Operating current rises.
- Cooling(or heating) efficiency drops.
- Moisture in the refrigerant circuit may freeze
and block capillary tubing.
- 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.
*The feature can be changed according a type
of model.
- 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 se-
curely with an adjustable wrench. This process
is very important to prevent leakage from the
system.
Outdoor unit
Lo Hi
Manifold valve
Vacuum pump
Pressure
gauge
Open Close
Indoor unit
Finishing the Job
- 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.
* The feature can be changed according to a type
of model.
Installation of filters
1Detach two nitto tapes from the plasma fil-
ter.
* The feature can be changed according to a
type of model.
Plasmaster filter
Operate the unit for 15~20 minutes, then
check the system refrigerant charge:
- Measure the pressure of the gas side service
valve.
- Measure the air temperature from inlet and
outlet of air conditiioner.
- Ensure the difference between the inlet and
outlet temperature is more than 8°C.
- For reference; the gas side pressure at opti-
mum condition is shown on table (cooling)
The air conditioner is now ready to use.
*The feature can be changed according to a type
of model.
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 refrig-
erant.
- 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 be-
comes 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
Inlet temperature
Refrigerant
Outside ambi-
ent TEMP.
The pressure of
the gas side
R-410A 35°C 8.5~9.5kg/cm2G(1
20~135 P.S.I.G.)
NOTE
!
If the actual pressure is higher than
shown, the system is most likely over-
charged, and charge should be removed.
If the actual pressure are lower than
shown, the system is most likely under-
charged, and charge should be added.
CAUTION
Be sure to perform Pump Down proce-
dure in the cooling mode.
!
Pump Down Procedure
Pump downEvaluation of the performance Piping Length and Elevation
Capacity
(W)
Pipe Size Standard
Length
(m)
Max.
Length
Ⓐ(m)
Max.
Elevation
Ⓑ(m)
Additional Re-
frigerant (g/m)
(after 12.5 m)
GAS LIQUID
mm inch mm inch
2.5k, 3.5k Ø9.52 3/8 Ø6.35 1/4 7.5 20 10 20
Operation ranges
Outdoor unit
Indoor unit
A
B
Outdoor unit
Indoor unit
A
B
CAUTION
Capacity is based on standard length and maximum allowable length is on the basis of relia-
bility.
Additional refrigerant must be charged after 12.5 m (there is no need to charge till 12.5 m
based on reliability)
!
The table below indicates the temperature ranges the air conditioner can be Operated within.
Mode Indoor temperature Outdoor temperature
Cooling -10°C~48°C(14°F~118.4°F) -10°C~48°C(14°F~118.4°F)
Heating -10°C~24°C(14.0°F~75.2°F) -10°C~24°C(14.0°F~75.2°F)
- 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 re-
duced to normal, disconnect the hose from
the cylinder.
*The feature can be changed according to a
type of model.
- 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 deter-
gent on the indoor unit connection or out-
door 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.
- When the desired vacuum is reached, close
the knob of the 3-way valve and stop the
vacuum pump.
Evacuation
Lo Hi
Outdoor unit
Manifold valve
Charge hose
Nitrogen gas
cylinder(in vertical
standing position)
Pressure
gauge
Indoor unit
Outdoor unit
Gas side
Liquid side
Cap
3-way or
2-way valve
3-way valve
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
Soap water method
Test Running
- Check that all tubing and wiring are properly
connected.
- Check that the gas and liquid side service
valves are fully open.
Prepare remote controller
1Remove the battery cover by pulling it ac-
cording to the arrow direction.
2Insert new batteries making sure that the
(+) and (–) of battery are installed correctly.
3Reattach the cover by pushing it back into
position.
NOTE
!
- Use 2 AAA(1.5volt) batteries. Do not use
rechargeable batteries.
- Remove the batteries from the remote
controller if the system is not used for a
long time
- Fix the outdoor unit with a bolt and
nut(ø10mm) tightly and horizontally on a con-
crete or rigid mount.
- 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.
- If the vibration of the unit is transmitted to
the pipe, secure the unit with an anti-vibra-
tion rubber.
Settlement of outdoor unit
Bolt
Tubing connection
In case, to install the outdoor unit on the sea-
side, set up a windbreak not to be exposed to
the sea wind.
Select a well-drained place.
- 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.
- It should be keep more than 70 cm of space
between outdoor unit and the windbreak for
easy air flow.
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.
!
Sea wind
Sea wind
Sea wind
Windbreak
Selecting the location(Outdoor Unit)
If the outdoor unit is to be installed close to
the seaside, direct exposure to the sea wind
should be avoided. Install the outdoor unit on
the opposite side of the sea wind direction.
Installation guide at the seaside
NOTE
!
- If you can’t meet above guide line in
the seaside installation, please con-
tact LG Electronics for the additional
anticorrosion.
- Periodic ( more than once/year )
cleaning of the dust or salt particles
stuck on the heat exchanger by using
water
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