LG Electronics Air Conditioner 3828A30087S User Manual

LG  
LG  
Room Air Conditioner  
INSTALLATION MANUAL  
IMPORTANT  
• Please read this instruction manual completely before  
installing the product.  
• When the power cord is damaged, replacement should be  
performed by authorized personnel only.  
• 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.  
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Safety Precautions  
Safety Precautions  
To prevent the injury of the user or other people and property damage, the following instructions  
must be followed.  
I Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is  
classified by the following indications.  
This symbol indicates the possibility of death or serious injury.  
This symbol indicates the possibility of injury or damage to properties only.  
I The meanings of the symbols used in this manual are as shown below.  
Be sure not to do.  
Be sure to follow the instruction.  
I Installation  
Do not use damaged power  
cords, plugs, or a loose socket.  
For electrical work, contact the  
dealer, seller, a qualified  
electrician, or an Authorized  
Service Center.  
Always use the power plug and  
socket with the ground terminal.  
• There is risk of electric shock.  
• There is risk of fire or electric shock.  
• There is risk of fire or electric shock.  
Install the panel and the cover of  
control box securely.  
Do not modify or extend the  
power cord.  
Do not install, remove, or re-  
install the unit by yourself  
(customer).  
• There is risk of fire or electric shock.  
• There is risk of fire, electric shock,  
explosion or injury.  
• There is risk of fire or electric shock.  
Installation Manual  
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3
Safety Precautions  
Be cautious when unpacking and  
installing the product.  
For installation, always contact  
the dealer or an Authorized  
Service Center.  
Do not install the product on a  
defective installation stand.  
• Shape edges could cause injury. Be  
especially careful of the sharp edges.  
• There is risk of fire, electric shock,  
explosion, or injury.  
• It may cause injury, accident, or  
damage to the product.  
Be sure the installation area  
does not deteriorate with age.  
Install the indoor unit on the wall  
where the height from the floors  
more then 1.5m(4.9ft)  
Do not handle the pipe by  
yourself(customer)  
• If the base collapses, the air  
conditioner could fall with it, causing  
property damage, product failure, and  
personal injury.  
• There are sharp moving parts that  
could cause personal injury.  
• High-Pressure refrigent may cause  
personal injury.  
1.5m(4.9ft)  
I Operation  
Use a dedicated outlet for this  
appliance.  
Grasp the plug to remove the  
cord from the outlet. Do not  
touch it with wet hands.  
Do not allow water to run into  
electric part.  
• There is risk of fire or electric shock.  
• There is risk of fire or electric shock.  
• There is risk of fire, failure of the  
product, and/or electric shock.  
4
Room Air Conditioner  
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Safety Precautions  
Do not place a heater or other  
appliances near the power cable.  
Do not let the air conditioner run  
for a long time when the  
humidity is very high and a door  
or a window is left open.  
Do not store of use flammable  
gas or combustibles near the air  
conditioner.  
There is risk of fire, failure of the product,  
and/or electric shock.  
• Moisture may condense and wet or  
damage furnishings.  
• There is risk of fire or product failure.  
Do not use the product in a  
tightly closed space for a long  
time.  
When flammable gas leaks, turn off  
the gas and open a window for  
ventilation before turning the product  
on. Do not use the telephone or turn  
switches on or off.  
Unplug the unit if strange  
sounds odors or smoke comes  
from it.  
• Oxygen deficiency could occur.  
• Some ventilation by opeing window  
is necessary for the fresh air.  
There is risk of fireproduct failure and/or  
electric shock.  
• There is risk of explosion or fire.  
Stop operation and close any  
window in storm or hurricane.  
before the hurricane arrives.  
Do not open the inlet grill of the  
product during operation. (Do  
not touch the electrostatic filter,  
if the unit is so equipped.)  
When the product is soaked  
(flooded or submerged), contact  
an Authorized Service Center.  
• There is risk of property damage,  
failure of product, or electric shock.  
• There is risk of physical injury, electric  
shock, or product.  
• There is risk of electrical shock.  
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5
Safety Precautions  
Ventilate the product from time to  
time when operating it together  
with a stove, etc.  
Unplug the appliance before  
performing cleaning or  
maintenance.  
When the product is not be used  
for a long time disconnect the  
power supply plug or turn off the  
breaker.  
There is risk of product damage or  
There is risk of fire or electrical shock.  
There is risk of electric shock.  
failure, or unintended operation.  
Take care to ensure that nobody could step on or  
fall onto the outdoor unit.  
Do not insert hands or other objects through the air  
inlet or outlet while the air conditioner is plugged  
in.  
There are sharp and moving parts that could cause  
There could result in personal injury and product damage.  
personal injury.  
I Installation  
Always check for gas(refrigerant)  
leakage after installation or  
repair of product.  
Install the drain hose to ensure  
that water is drained away  
properly.  
Keep level even when installing  
the product.  
• Low refrigerant levels may cause  
product failure.  
• A bad connection may cause water  
leakage.  
To avoid vibration or water leakage.  
90˚  
6
Room Air Conditioner  
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Safety Precautions  
Do not install the product where  
the noise or hot air from the  
outdoor unit could damage the  
neighborhoods.  
Use two or more people to lift  
and transport the air conditioner  
Do not install the product where  
it will be exposed to sea wind  
(salt spray) directly.  
It may cause a problem for your  
neighbors.  
It may cause corrosion in the product.  
Corrosion, particularly on the  
condenser and evaporator fins, could  
cause product malfunction or  
inefficient operation.  
Avoid personal injury.  
I Operation  
Do not direct airflow at room  
occupants.  
Do not use the product for special  
purposes, such as preserving  
foods, works of art, etc. It is a  
consumer air conditioner, not a  
precision refrigeration system.  
Do not block the inlet or outlet of  
air flow.  
There is risk of damage or loss of  
This could damage your health.  
It may cause product failure.  
property.  
Use a soft cloth to clean.  
Do not use harsh detergents,  
solvents, etc.  
Do not touch the metal parts of  
the product when removing the  
air filter. They are very sharp!  
Do not step on or put anything  
on the product. (outdoor unit)  
There is risk of fire, electric shock  
or damage to the plastic parts of the  
product.  
There is risk of personal injury and  
failure of product.  
There is risk of personal injury.  
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7
Safety Precautions  
Always insert the filter securely. Clean the filter  
every two weeks or more often if necessary.  
Do not drink the water drained from the unit.  
A dirty filter reduces the efficiency of the air conditioner and  
could cause product malfunction or damage.  
It is not sanitary and could cause serious health issues.  
Use a firm stool or ladder when cleaning or  
maintaining the air conditioner.  
Replace all the batteries in the remote.  
There is risk of fire or explosion.  
Be careful and avoid personal injury.  
I Disuse  
Do not recharge or disassemble the batteries. Do  
not dispose of batteries in a fire.  
If the liquid from the batteries gets onto your skin  
or clothes, wash it well with clean water. Do not  
use the remote if the batteries have leaked.  
They may burn or explode.  
The chemicals in batteries could cause burns or other  
health hazards.  
8
Room Air Conditioner  
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Introduction  
Introduction  
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.  
NOTICE  
Features  
Air Inlet  
Air Filter  
Front Panel  
Signal Receptor  
Air Intake Vents  
Connecting  
Wires  
Connecting  
Wires  
Air Intake  
Vents  
Piping  
Piping  
Air Outlet  
Vents  
Drain Hose  
Drain Hose  
Air Outlet Vents  
Base Plate  
Base Plate  
Installation Manual  
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9
Installation  
Installation  
Read carefully, and then follow step by step.  
Installation Parts  
Installation plate  
Type "A" screw and plastic anchor  
Remote Control Holder  
Type "B" screw  
Installation Tools  
Figure  
Name  
Figure  
Name  
Screw driver  
Ohmmeter  
Electric Drill  
Hexagonal wrench  
Measuring Tape, Knife  
Hole Core Drill  
Ammeter  
Gas Leak Detector  
Thermometer,  
Level  
Spanner  
Torque wrench  
Flaring Tool Set  
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Installation  
Installation Map  
NOTICE  
Installation parts you should purchase.  
Installation plate  
Sleeve  
Bushing-Sleeve  
Putty(Gum Type Sealer)  
Bend the pipe as closely  
on the wall as possible,  
but be careful that it  
doesn't break.  
Air Discarge  
Vertical Air deflector  
Operation Indication Lamps/  
Signal Receptor  
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.  
Forced Operation Button  
Saddle  
Gas side piping  
Liquid side piping  
Additional drain pipe  
(Optional Parts)  
(Optional Parts)  
Air Inlet Vents  
Air Outlet Vents  
Vinyl tape (Narrow)  
Drain Hose  
Connecting cable  
(Optional Parts)  
Base Plate  
NOTE: refrigerant line wall thickness must be at least 0.8 mm (0.031 inch)  
Installation Manual 11  
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Installation  
Confirm The Refrigerant  
1. Check the quality label on the indoor and outdoor unit.  
2. Make certain that the refrigerant is R-410A.  
NOTICE  
THIS PRODUCT CONTAINS R-410A REFRIGERANT  
1) Different compressor oil  
- R-410A(Polyol ester) / R-22(Mineral).  
- Do not mix the existing mineral oil.  
- Do not apply used pipe, tools and gauges covered with the existing mineral oil.  
2) Absorption of moisture  
-Compressors oil has the high absorption rate of moisture.  
3) Composition  
- R-410A(R32:R125=50:50wt%).  
NOTE: Never mix with other refrigerants  
Example : Split type 12,000 Btu/h  
120  
100  
93  
100  
80  
60  
40  
20  
89  
84  
76  
0
R-410A  
R-22  
100%  
70%  
50%  
30%  
0%  
0%  
30%  
50%  
70% 100%  
4) High pressure.  
- 1.6 times higher than R-22.  
- High Pressure refrigerant may cause personal injury.  
Boiling Pt.(°C)  
Vapor pressure(25°C)(kg f/cnf)  
Vapor density(25°C)(kg/m2)  
R-410A  
R-22  
-51.4  
-40.8  
15.9  
9.6  
64  
44.4  
Do not handle the pipe by yourself (customer) High-pressure refrigerant may cause personal injury.  
- manifold gauge ,charging and any piping tools must be dedicated to R-410A systems.  
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Installation  
Select The Best Location  
6. Use a stud finder to locate studs to prevent  
unnecessary damage to the wall.  
Indoor unit  
1. Do not have any heat or steam near the unit.  
2. Select a place where there are no obstacles  
in front of the unit.  
More than  
20cm(7.9in)  
3. Make sure that condensation drainage can be  
conveniently routed away.  
More than  
30cm(11.8in)  
More than  
30cm(11.8in)  
4. Do not install near a doorway.  
More than 1.5m(4.9ft)  
5. Ensure that the space around the left and  
right of the unit is more than 30cm(11.8in).  
The unit should be installed as high on the  
wall as possible, allowing a minimum of  
20cm(7.9in) from ceiling.  
Install the indoor unit on the wall where the height from the floors more than 1.5meters(4.9ft).  
A minimum pipe run of 7.5meters(24.6ft) is required to minimize vibration and excessive noise.  
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.  
5. Select a place so that the warm air and noise  
from the air conditioner do not disturb  
neighbors.  
2. Ensure that the space around the back and  
sides is more than 30cm(11.8in). The front of  
the unit should have more than 70cm(27.6in)  
of space.  
More than  
60cm(23.6in)  
More than  
30cm(11.8in)  
More than  
30cm(11.8in)  
3. Do not place animals and plants in the path  
of the warm air.  
More than  
More than  
70cm(27.6in)  
60cm(23.6in)  
4. Take the air conditioner weight into account  
and select a place where noise and vibration  
are minimum.  
Rooftop Installations  
If the outdoor unit is installed on a roof structure, be sure to level the unit. Ensure the roof structure  
and anchoring method are adequate for the unit location. Consult local codes regarding rooftop  
mounting.  
If the outdoor unit is installed on roof structures or walls, this may result in excessive noise and  
vibration, and may be also classed as non serviceable installation.  
Installation Manual 13  
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Installation  
Piping Length And Elevation  
Pipe Size  
Suction  
Capacity  
(Btu/h)  
Additional Refrigerant  
g/m(oz/ft)  
Standard Length Max. Elevation  
Max. length  
m(ft)  
m(ft)  
m(ft)  
Evap  
12k  
Ø12.7mm(1/2") Ø6.35mm(1/4")  
7.5(25)  
7.5(25)  
15(49)  
20(0.22)  
Outdoor unit  
Indoor unit  
Outdoor unit  
A
Oil trap  
A
A
Indoor unit  
B
Outdoor unit  
Indoor unit  
B
B
In case more than 5m(16.4ft)  
Capacity is based on standard length and maximum allowance length is on the basis of  
reliability.  
Oil trap should be installed every 5~7meters (16.4~23.0ft).  
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Installation  
How To Mount Installation Plate  
The wall you select should be strong and solid  
enough to prevent vibration  
Installation Plate  
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 a level.  
Chassis  
Hook  
Type A”  
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.  
Distance [mm(in)]  
CHASSIS  
(Grade)  
A
B
C
D
SE  
65(2.6)  
110(4.3)  
85(3.3)  
110(4.3)  
Installation plate  
B
D
A
C
Ø70mm  
Ø70mm  
Left rear piping  
Right rear piping  
Drill a Hole In The Wall  
Drill the piping hole with a ø70mm(2.76in)  
hole core drill. Drill the piping hole at either  
the right or the left with the hole slightly  
slanted to the outdoor side.  
WALL  
Indoor  
Outdoor  
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Installation  
Flaring Work  
Main cause for gas leakage is due to defect in 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.  
Copper  
pipe  
Slanted Uneven Rough  
90¡  
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(59.1in) longer than the  
pipe length.  
Burrs removal  
Pipe  
Reamer  
1. Completely remove all burrs from the cut cross  
section of pipe/tube.  
2. Put the end of the copper tube/pipe in a  
downward direction as you remove burrs in  
order to avoid dropping burrs into the tubing.  
Point down  
Putting nut on  
Flare nut  
Remove flare nuts attached to indoor and  
outdoor unit, then put them on pipe/tube having  
completed burr removal.  
Copper tube  
(not possible to put them on after flaring work)  
Flaring work  
Carry out flaring work using flaring tool as  
shown below.  
Firmly hold copper pipe in a die in the  
dimension shown in the table above.  
Handle  
Outside diameter  
A
Bar  
Bar  
mm  
inch  
1/4  
3/8  
1/2  
5/8  
3/4  
mm  
inch  
Yoke  
Cone  
Ø6.35  
Ø9.52  
Ø12.7  
Ø15.88  
Ø19.05  
1.1~1.3  
1.5~1.7  
1.6~1.8  
1.6~1.8  
1.9~2.1  
0.043~0.051  
0.059~0.066  
0.063~0.070  
0.063~0.070  
0.074~0.082  
Copper pipe  
Clamp handle  
Red arrow mark  
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Installation  
Connecting TthheePPiippiinngg  
Indoor  
1. Prepare the indoor unit's piping and drain hose for installation through the wall.  
2. Remove the plastic tubing retainer(see the  
illustration by) and pull the tubing and drain  
hose away from chassis.  
3. Replace only the plastic tubing holder 1, not  
the holder 2 in the original position.  
For left rear piping  
Route the indoor tubing and the drain hose in  
the direction of rear left.  
1
2
Connecting  
cable  
Insert the connecting cable into the indoor unit  
from the outdoor unit through the piping hole.  
Do not connect the cable to the indoor unit.  
Make a small loop with the cable for easy  
connection later.  
Drain pipe  
Tape the tubing, drain hose and the connecting  
cable. Be sure that the drain hose is located at the  
lowest side of the bundle. Locating at the upper side  
can cause drain pan to overflow inside the unit.  
NOTE: 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.  
Indoor unit installation  
Hook the indoor unit onto the upper portion of  
the installation plate.(Engage the three hooks  
of the rear top and rear lower of the indoor unit  
with the upper edge and lower edge of the  
installation plate.) Ensure that the hooks are  
properly seated on the installation plate by  
moving it left and right.  
Indoor unit  
Spacer  
Installation plate  
8cm  
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Installation  
Wrap the insulation material around the  
connecting portion.  
Connecting the pipings to the indoor unit  
and drain hose to drain pipe.  
Put a couple drops of refrigerant oil on the face of  
the flare before assembling taking care not to add  
any contaminants.  
Overlap the connection pipe insulation material  
and the indoor unit pipe insulation material. Bind  
them together with vinyl tape so that there is no  
gap.  
Align the center of the pipings and sufficiently  
tighten the flare nut by hand.  
Plastic bands  
Insulation material  
Indoor unit tubing  
Flare nut Pipings  
Tighten the flare nut with a wrench.  
Indoor unit tubing  
Wrap the area which accommodates the rear  
piping housing section with vinyl tape.  
Indoor  
unit pipe  
Torque wrench  
Connection  
pipe  
Connection pipe  
Flare nut  
Vinyl tape  
(wide)  
Wrap with vinyl tape  
Spanner (fixed)  
Connecting cable  
Outside diameter  
A
mm  
inch  
1/4  
3/8  
1/2  
5/8  
3/4  
mm  
inch  
Pipe  
Ø6.35  
Ø9.52  
Ø12.7  
Ø15.88  
Ø19.05  
1.1~1.3  
1.5~1.7  
1.6~1.8  
1.6~1.8  
1.9~2.1  
0.043~0.051  
0.059~0.066  
0.063~0.070  
0.063~0.070  
0.074~0.082  
Vinyl tape(narrow)  
Bundle the piping and drain hose together by  
wrapping them with vinyl tape over the range  
within which they fit into the rear piping housing  
section.  
Mount the clamp on the boss with a type "B"  
screw.(SE-H/P: 9k, 12k C/O: 12k)  
Wrap with vinyl tape  
Type "B" screw  
Clamp  
Drain hose  
Pipe  
Boss  
Vinyl tape(wide)  
Drain hose  
When extending the drain hose at the indoor unit,  
install the drain pipe.  
For right rear piping  
Route the indoor tubing and the drain hose to  
the required piping hole position.  
Drain pipe  
Indoor unit drain hose  
Vinyl tape(narrow)  
Adhesive  
Drain hose  
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Installation  
Insert the connecting cable into the indoor unit.  
Spanner (fixed)  
Don't connect the cable to the indoor unit.  
Make a small loop with the cable for easy  
connection later.  
Flare nut  
Connection pipe  
Torque wrench  
Tape the drain hose and the connecting cable.  
Indoor unit tubing  
Connecting cable  
Outside diameter  
A
mm  
inch  
1/4  
3/8  
1/2  
5/8  
3/4  
mm  
inch  
Ø6.35  
Ø9.52  
Ø12.7  
Ø15.88  
Ø19.05  
1.1~1.3  
1.5~1.7  
1.6~1.8  
1.6~1.8  
1.9~2.1  
0.043~0.051  
0.059~0.066  
0.063~0.070  
0.063~0.070  
0.074~0.082  
Tape  
Connecting  
pipe  
Mount the clamp on the boss with a type "B"  
screw.(SE-H/P: 9k, 12k C/O: 12k)  
Drain hose  
Connecting cable  
Indoor unit installation  
Type "B" screw  
Clamp  
Drain hose  
Hook the indoor unit onto the upper portion of  
the installation plate.(Engage the three hooks of  
the rear top and rear lower of the indoor unit with  
the upper edge and lower edge of the installation  
plate.) Ensure that the hooks are properly  
seated on the installation plate by moving it left  
and right.  
Boss  
When extending the drain hose at the indoor unit,  
install the drain pipe.  
Drain hose  
Connecting  
cable  
Indoor unit drain hose  
Drain hose  
Vinyl tape (narrow)  
Adhesive  
Wrap the insulation material around the  
connecting portion.  
Connecting the pipings to the indoor unit and  
the drain hose to drain pipe.  
Put a couple drops of refrigerant oil on the face of  
the flare before assembling taking care not to add  
any contaminants  
Align the center of the pipings and sufficiently  
tighten the flare nut by hand.  
Overlap the connection pipe heat insulation and the  
indoor unit pipe heat insulation material. Bind them  
together with vinyl tape so that there is no gap.  
Plastic bands  
Insulation material  
Indoor unit tubing  
Flare nut Pipings  
Tighten the flare nut with a wrench.  
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Installation  
Wrap the area which accommodates the rear  
piping housing section with vinyl tape.  
Reroute the pipings and the drain hose  
across the back of the chassis.  
Indoor  
unit piping  
Connection  
pipe  
Vinyl tape  
(wide)  
Wrap with vinyl tape  
Pipe  
Vinyl tape(narrow)  
Piping for  
passage through  
piping hole  
Connecting cable  
Reroute the pipings and the drain hose  
across the back of the chassis.  
Bundle the piping and drain hose together by  
wrapping them with cloth tape over the range within  
which they fit into the rear piping housing section.  
Connecting  
cable  
Pipe  
Drain hose  
Vinyl tape(narrow)  
Drain hose  
Wrap with  
vinyl tape(wide)  
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Installation  
Installation Information. For left piping. Follow the instruction below.  
Correct case  
Press on the upper side of clamp and unfold the tubing to downward slowly.  
Incorrect case  
Following bending type from right to left may cause damage to the tubing.  
Installation Manual 21  
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Installation  
Connectinogn tOhfeTPhiepiDnrgain Hose  
The drain hose can be connected at two different  
positions. Use the most convenient position and, if  
necessary, exchange the position of the drain pan,  
rubber cap and the drain hose.  
2
4
Drain pan  
3
Rubber cap  
Drain hose  
Exchange if necessary  
Remove the drain hose.  
1
Securely insert both the rubber plug and drain  
hose into the drain outlets.  
Be sure the rubber the cap is securely fastened so  
that there is no leakage.  
Connectinogn tOhfePPipipiningg-Outdoor  
Put a couple drops of refrigerant oil on the face  
of the flare before assembling taking care not to  
add any contaminants.  
Outdoor unit  
Suction Line piping  
(Bigger diameter)  
Align the center of the pipings and sufficiently  
tighten the flare nut by hand.  
Evaporator Line  
piping  
(Smaller  
diameter)  
Finally, tighten the flare nut with torque wrench  
until the wrench clicks.  
Torque wrench  
When tightening the flare nut with torque wrench,  
ensure the direction for tightening follows the arrow  
on the wrench.  
Outside diameter  
mm  
Ø6.35  
Ø9.52  
Ø12.7  
Ø15.88  
Ø19.05  
Torque  
kgf·cm  
inch  
1/4  
3/8  
1/2  
5/8  
1/4  
180~250  
340~420  
550~660  
630~820  
980~1210  
22 Room Air Conditioner  
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Installation  
Connectinogn tOhfeTPhiepiCnagble  
1. Remove the cover control from the unit by  
loosening the 3 screws.  
Wiring Diagram  
Connecting cable(Low voltage)  
b
2. Dismount caps on the conduit panel.  
Indoor Unit  
Outdoor Unit  
Terminal  
(4P)  
Terminal  
(6P)  
3. Temporarily mount the conduit tubes on the  
conduit panel.  
1
2
3
4
1
2
3
4
4. Properly connect both the power supply and  
low voltage lines to the corresponding  
terminals on the terminal block.  
Power supply  
a
5
L1*  
6
L2  
5. Ground the unit in accordance with local  
codes.  
To  
branch  
G
circuit  
6. Be sure to size each wire allowing several  
inches longer than the required length for  
wiring.  
Ground  
L1 is neutral for 115V models.  
*
7. Use lock nuts to secure the conduit tubes.  
NOTE  
1.  
shows field wiring.  
2. Separately wire the high and low voltage line.  
3. Use heat-proof electrical wiring capable of  
withstanding temperatures up to 167°F.  
4. Use outdoor and waterproof connection cable  
rated more than 300V for the connection between  
indoor and outdoor unit.  
NOTE  
Connector trade size for this unit is 1/2"  
for instructions on connecting depending on  
the wire type you are using.  
(For example,Type STOW)  
WARNING  
Be sure to comply with local codes while  
running the wire from the indoor unit to the  
outdoor unit(size of wire and wiring method,  
etc).  
Outdoor unit  
Terminal block  
Every wire must be connected firmly.  
No wire should be allowed to touch  
refrigerant tubing, the compressor or any  
moving parts.  
Over 5mm  
(0.2")  
Conduit panel  
Connecting  
cable  
Power Supply  
Fuse or breaker  
Capacity  
AWG(MIN.)  
14 18  
Power supply  
cord  
Model Power source  
12k 1ø, 115V  
20A  
Cover control  
Installation Manual 23  
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Installation  
How to use the front panel  
1. Front panel opening  
Hold the two ends of the front panel at the  
bottom and move it upward.  
Front panel  
2. Front panel closing  
Move the link upward and close the front  
panel.  
3. Front panel removing  
Raise the link up to hook hanger and remove  
front panel forward.  
CAUTION  
After 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) Confirm 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 GFCI 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, open fuse, 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(0.12in) in each  
active(phase) conductors.  
24 Room Air Conditioner  
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Installation  
Checking The Drainage  
Pour a glass of water on the drain pan.  
Ensure the water flows through the drain hose of the indoor unit without any leakage and goes out the drain  
exit.  
Connecting area  
drain hose  
Leakage  
checking  
Drain pan  
Drain  
hose  
Leakage  
checking  
Drain piping  
The drain hose should point downward for easy drain flow.  
Downward slope  
Avoid these situations.  
Accumulated  
Do not raise  
drain water  
Less than  
50mm gap  
Tip of drain hose  
dipped in water  
Air  
Water  
leakage  
Water  
leakage  
Water  
leakage  
Waving  
Ditch  
Installation Manual 25  
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Installation  
Forming The Piping  
In cases where the Outdoor unit is installed  
above the Indoor unit perform the following.  
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.  
Tape the piping and connecting cable from down to  
up.  
Secure the taped piping along the exterior wall. Form  
a trap to prevent water entering the room.  
Fix the piping onto the wall by saddle or equivalent.  
In cases where the outdoor unit is installed  
below the indoor unit perform the following.  
Tape the piping, drain hose and connecting cable  
from down to up.  
Secure the tapped piping along the exterior wall  
using saddle or equivalent.  
Seal a small opening  
around the pipings  
with gum type sealer.  
Trap  
Seal small openings  
around pipings with a  
gum type sealer.  
Trap  
Taping  
Drain  
hose  
Pipings  
Connecting  
cable  
Trap is required to prevent water  
from entering into electrical parts.  
26 Room Air Conditioner  
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Installation  
Air Purging  
Air and moisture remaining in the refrigerant system have undesirable effects as indicated 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, the indoor unit and tubing between the indoor and outdoor unit must be leak tested and evacuated  
to remove any noncondensables and moisture from the system.  
Air purging With Vacuum Pump  
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.  
Preparation  
Check that each tubing(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 After the system is found to be free of leaks, relieve  
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.  
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.  
Leak test  
Connect the manifold valve(with pressure  
gauges) and dry nitrogen gas cylinder to this  
service port with charge hoses.  
Manifold valve  
Indoor unit  
Pressure  
gauge  
Lo  
Hi  
CAUTION  
Be sure to use a manifold valve for air  
purging. If it is not available, use a stop  
valve for this purpose. The "Hi" knob of  
the manifold valve must always be kept  
close.  
Charge hose  
Outdoor unit  
Nitrogen gas  
cylinder(in vertical  
standing position)  
Pressurize the system to no more than 150 P.S.I.G.  
with dry nitrogen gas and close the cylinder valve  
when the gauge reading reached 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.  
Installation Manual 27  
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Installation  
Soap water method  
(1) Remove the caps from the gas side and  
Suction Line  
liquid side valves.  
(2) Remove the service-port cap from the gas  
side valve.  
(3) To open the gas side valve turn the valve  
stem counterclockwise approximately 90°,  
wait for about 2~3 seconds, and close it.  
(4) 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.  
Evaporator Line  
3-way valve  
(Close)  
3-way valve  
(Open)  
(5) If bubbles come out, the pipes have  
leakage.  
Cap  
Hexagonal wrench  
Evacuation  
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 manifold valve is  
open. Then, run the vacuum pump.  
Indoor unit  
The operation time for evacuation varies with  
tubing length and capacity of the pump. The  
following table shows the time required for  
evacuation.  
Required time for evacuation when 30 gal/h  
vacuum pump is used  
Outdoor unit  
if tubing length is longer  
than 10m (33 ft)  
If tubing length is less  
than 10m (33 ft)  
10 min. or more  
15 min. or more  
When the desired vacuum is reached, close the  
"Lo" knob of the manifold valve and stop the  
vacuum pump.  
Finishing the job  
Manifold valve  
With a service valve wrench, turn the valve  
stem of liquid side valve counter-clockwise to  
fully open the valve.  
Turn the valve stem of gas side valve counter-  
clockwise to fully open the valve.  
Pressure  
gauge  
Lo  
Hi  
Loosen the charge hose connected to the gas  
side service port slightly to release the pressure,  
then remove the hose.  
Open  
Close  
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.  
The air conditioner is now ready to test run.  
Vacuum pump  
28 Room Air Conditioner  
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Installation  
Charging  
I Each outdoor unit is factory charged (nameplate charge) for the evaporator as well as a 7.5m(25ft) line  
set. Any time a line set is used either shorter or longer then the nominal 7.5m(25ft) line set length the  
refrigerant charge has to be adjusted.  
I Whether the line set is made shorter or longer you must adjust the charge based on how many ft of tubing  
are either added or removed based on 30g(0.32oz) of R-410A per meter(foot).  
Pipe Size  
Suction  
Capacity  
(Btu/h)  
Additional Refrigerant  
g/m(oz/ft)  
Standard Length Max. Elevation  
Max. length  
m(ft)  
m(ft)  
m(ft)  
Evap  
12k  
Ø12.7mm(1/2") Ø6.35mm(1/4")  
7.5(25)  
7.5(25)  
15(49)  
20(0.22)  
Example: A 30ft line set is used  
5 additional ft X 0.22 ounce per foot= add 1.1 ounces of R-410A  
Important:  
If you are ever uncertain of the unit charge, reclaim, evacuate and weigh in the correct charge using the unit  
nameplate charge adjusting for line sets longer or shorter than 7.5m(25ft).  
Confirm the refrigerant R-410A. Use manifold gauge and hose for R-410A.  
Installation Manual 29  
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Test Running  
Test Running  
1. Check that all tubing and wiring have been  
properly connected.  
3. Ensure the difference between the intake  
temperature and the discharge is more than  
46.4°F(8°C) (Cooling) or (Heating).  
2. Check that the gas and liquid side service valves  
are fully open.  
Intake temperature  
Prepare remote control  
Discharge air  
1. Remove the battery cover  
by pulling it according to the  
arrow direction.  
2. Insert new batteries making  
sure that the (+) and () of  
battery are installed correctly.  
Discharge  
temperature  
3. Reattach the cover by  
pushing it back into position.  
4. For reference; the gas side pressure of optimum  
condition is as below.(Cooling)  
Outside ambient TEMP.  
The pressure of the gas side service valve  
8.5~9.5kg/cm2 G(120~135 P.S.I.G.)  
NOTE:  
• Use 2 AAA(1.5volt) batteries. Do not use  
rechargeable batteries.  
95°F(35°C)  
NOTE: If the actual pressure are 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 undercharged, and  
charge should be added.  
• Remove the batteries from the remote control if  
the system is not going to be used for a long  
time.  
Settlement of outdoor unit  
The air conditioner is now ready for use.  
I
I
I
Anchor the outdoor unit with a bolt and  
nut(ø10mm(0.39in) tightly and horizontally on a  
concrete 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.  
In the case when the vibration of the unit is  
conveyed to the hose, secure the unit with an anti-  
vibration rubber.  
PUMP DOWN  
This is performed when the unit is to be  
relocated or the refrigerant circuit is  
serviced.  
Pump Down means collecting all refrigerant in  
the outdoor unit without loss of refrigerant.  
CAUTION:  
Be sure to perform Pump Down procedure  
Bolt  
with the unit cooling mode.  
Pump Down Procedure  
1. Connect a low-pressure gauge manifold hose  
to the charge port on the gas side service  
valve.  
2. Open the gas side service valve halfway and  
purge the air from the manifold hose using the  
refrigerant gas.  
Tubing connection  
3. Close the liquid side service valve(all the way  
Evaluation of the performance  
in).  
4. Turn on the unit's operating switch and start  
the cooling operation.  
Operate unit for 15~20 minutes, then check the  
system refrigerant charge:  
1. Measure the pressure of the gas side service  
valve.  
2. Measure the temperature of the intake and  
discharge of air.  
5. When the low-pressure gauge reading  
2
becomes 1 to 0.5kg/cm G(14.2 to 7.1  
P.S.I.G.), fully close the gas side valve stem  
and then quickly turn off the unit. At that time,  
Pump Down has been completed and all  
refrigerant will have been collected in the  
outdoor unit.  
30 Room Air Conditioner  
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Installation guide at the seaside  
Installation guide at the seaside  
1. Air conditioners should not be installed in areas where corrosive gases, such as acid or alkaline gas, are produced.  
2. 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 malfunc-  
tion or inefficient performance.  
3. 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.  
Selecting the location(Outdoor Unit)  
1) 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.  
Sea wind  
Sea wind  
2) In case, to install the outdoor unit on the seaside, set up a windbreak not to be exposed to the sea wind.  
It should be strong enough like concrete to prevent  
the sea wind from the sea.  
Windbreak  
The height and width should be more than 150% of  
the outdoor unit.  
Sea wind  
It should be keep more than 70 cm of space  
between outdoor unit and the windbreak for easy  
air flow.  
3) Select a well-drained place.  
1. If you cant meet above guide line in the seaside installation, please contact LG Electronics for the additional anticorrosion treatment.  
2. Periodic ( more than once/year ) cleaning of the dust or salt particles stuck on the heat exchanger by using water  
Installation Manual 31  
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32 Room Air Conditioner  
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P/No.: 3828A30087S  
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