website http://www.lgservice.com
LG
LG
Room Air Conditioner
SERVICE MANUAL
MODELS: LAN091CNP (ASNC091F2G0)
LAU091CNP (ASUC091FUG0)
LAN121CNP (ASNC121F2G0)
LAU121CNP (ASUC121FUG0)
LAN091HNP (ASNH091F2G0)
LAU091HNP (ASUH091FUG0)
LAN121HNP (ASNH121F2G0)
LAU121HNP (ASUH121FUG0)
LA090CPI (ASNC091F2G0)
LA090CPO (ASUC091FUG0)
LA120CPI (ASNC091F2G0)
LA120CPO (ASUC091FUG0)
LA090HPI (ASNH091F2G0)
LA090HPO (ASUH091FUG0)
LA120HPI (ASNH121F2G0)
LA120HPO (ASUH121FUG0)
CAUTION
•BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
•ONLY FOR AUTHORIZED SERVICE PERSONNEL.
Air Conditioner Service Manual |
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TABLE OF CONTENTS |
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Safety Precautions ........................................................................................................................................................... |
3 |
Dimensions ....................................................................................................................................................................... |
9 |
Symbols Used in this Manual ..................................................................................................................................... |
9 |
Indoor Unit .................................................................................................................................................................. |
9 |
Outdoor Unit ............................................................................................................................................................. |
10 |
Product Specifications .................................................................................................................................................. |
11 |
Installation ...................................................................................................................................................................... |
12 |
Installation Parts ....................................................................................................................................................... |
12 |
Installation Tools....................................................................................................................................................... |
12 |
Installtion Map........................................................................................................................................................... |
13 |
Confirm the Refrigerant ............................................................................................................................................ |
14 |
Select the best Locations.......................................................................................................................................... |
15 |
Piping Length and Elevation ..................................................................................................................................... |
16 |
Preparing Work for Installation ................................................................................................................................. |
17 |
Fixing Indoor Unit...................................................................................................................................................... |
18 |
Flaring work and connection of piping ........................................................................................................................ |
19 |
Flaring work .............................................................................................................................................................. |
19 |
Connection of piping-Indoor...................................................................................................................................... |
20 |
Connection of the drain hose.................................................................................................................................... |
21 |
Connection of piping-Outdoor................................................................................................................................... |
23 |
Connecting the cable between indoor unit and outdoor unit .................................................................................... |
24 |
Connect the cable to the Indoor unit......................................................................................................................... |
24 |
Connection method of the connecting cable(Example) ............................................................................................ |
25 |
Checking the drainage and forming the pipings......................................................................................................... |
26 |
Checking the drainage.............................................................................................................................................. |
27 |
Forming the piping .................................................................................................................................................... |
28 |
AIR PURGING ................................................................................................................................................................. |
29 |
Air purging ................................................................................................................................................................ |
29 |
Charging ................................................................................................................................................................... |
31 |
Panel front assembly ................................................................................................................................................ |
32 |
Test running.............................................................................................................................................................. |
33 |
How to replace picture & photograph .......................................................................................................................... |
35 |
Operation ........................................................................................................................................................................ |
36 |
Functions .................................................................................................................................................................. |
36 |
The function of main control ..................................................................................................................................... |
37 |
Display Function ...................................................................................................................................................... |
43 |
Self-diagnosis Function ............................................................................................................................................ |
43 |
Remote Control Operations ...................................................................................................................................... |
44 |
Disassembly ................................................................................................................................................................... |
45 |
Indoor Unit ................................................................................................................................................................ |
45 |
Schematic Diagram ........................................................................................................................................................ |
47 |
Heat Pump/Cooling Only Series(Indoor Unit) ........................................................................................................... |
47 |
Heat Pump Series (Outdoor Unit)............................................................................................................................. |
48 |
INDOOR UNIT P.W.B. ASSEMBLY ......................................................................................................................... |
49 |
OUTDOOR UNIT P.W.B. ASSEMBLY ..................................................................................................................... |
50 |
DISPLAY P.W.B. ASM.............................................................................................................................................. |
51 |
Wiring Diagram ......................................................................................................................................................... |
52 |
Troubleshooting Guide.................................................................................................................................................. |
54 |
Refrigeration Cycle Diagram..................................................................................................................................... |
54 |
Pipe length and the elevation ................................................................................................................................... |
55 |
3-way Valve .............................................................................................................................................................. |
56 |
Cycle Parts ............................................................................................................................................................... |
62 |
Electronic Parts......................................................................................................................................................... |
63 |
Exploded View ................................................................................................................................................................ |
72 |
Replacement Parts List.................................................................................................................................................. |
74 |
2 Room Air Conditioner
Safety Precautions
Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions must be followed.
■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.
■ Meanings of symbols used in this manual are as shown below.
Be sure not to do.
Be sure to follow the instruction.
■ 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.
• There is risk of fire or electric |
• There is risk of fire or electric |
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shock. |
Install the panel and the cover of |
Do not modify or extend the |
control box securely. |
power cord. |
• There is risk of fire or electric |
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shock. |
• There is risk of fire or electric |
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shock. |
Always use the power plug and socket with the ground terminal.
• There is risk of electric shock.
Do not install, remove, or reinstall the unit by yourself (customer).
•There is risk of fire, electric shock, explosion, or injury.
Service Manual 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.
•Sharp edges could cause injury. Be especially careful of the case
•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.
•If the base collapses, the air conditioner could fall with it, causing
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.
•Moisture may condense and wet or damage furnishings.
Take care to ensure that power cords could not be pulled out or damaged during operation.
•There is risk of fire or electrical shock.
Do not place anything on the power cord.
•There is risk of fire or electric shock.
Do not turn the air-conditioner ON or OFF by plugging or unplugging the power plug.
•There is risk of fire or electrical shock.
4 Room Air Conditioner
Safety Precautions
Use a dedicated outlet for this appliance.
•There is risk of fire or electrical shock.
Do not allow water to run into electric parts.
• It may cause There is risk of fire,
Grasp the plug to remove the |
Do not place a heater or other |
cord from the outlet. Do not |
appliances near the power cable. |
touch it with wet hands. |
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• There is risk of fire or electrical |
• There is risk of fire and electric |
shock. |
shock. |
Do not store or use flammable |
Do not use the product in a tight- |
gas or combustibles near the air |
ly closed space for a long time. |
conditioner. |
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• There is risk of fire or failure of |
• Oxygen deficiency could occur. |
product. |
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Wax
Thinner
When flammable gas leaks, turn |
Unplug the unit if strange |
off the gas and open a window |
sounds, odors, or smoke comes |
for ventilation before turn the |
from it. |
product on. DO NOT use the tele- |
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phone or turn switches on or off. |
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• There is risk of explosion or fire. |
• There is risk of electrical shock or |
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fire |
Stop operation and close the window in storm or hurricane. If possible, remove the air conditioner from the window before the hurricane arrives.
•There is risk of property damage, failure of product, or electric shock.
Service Manual 5
Safety Precautions
Do not open the inlet grill of the product during operation. (Do not touch the electrostatic filter, if the unit is so equipped.)
•There is risk of physical injury, electric shock, or product failure.
Unplug the appliance before performing cleaning or maintenance.
When the product is soaked (flooded or submerged), contact an Authorized Service Center.
•There is risk of fire or eletric shock.
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 electrical shock. |
• There is risk of product damage or |
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failure, or unintended operation. |
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Ventilate the product from time to time when operating it together with a stove, etc.
•There is risk of fire or electrical shock.
Take care to ensure that nobody could step on or fall onto the outdoor unit.
•This could result in personal injury and product damage.
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 |
Keep level even when installing |
that water is drained away prop- |
the product. |
erly. |
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• A bad connection may cause water |
• To avoid vibration or water leakage. |
leakage. |
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90˚ |
6 Room Air Conditioner
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 |
• Avoid personal injury. |
• It may cause corrosion on the prod- |
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neighbors. |
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uct. Corrosion, particularly on the |
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condenser and evaporator fins, |
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could cause product malfunction or |
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inefficient operation. |
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Do not direct airflow at room occupants. (Don't sit in the draft.)
• This could damage your health.
Use a soft cloth to clean. Do not use harsh detergents, solvents, etc.
•There is risk of fire, electric shock, or damage to the plastic parts of the product.
Do not use the product for spe- |
Do not block the inlet or outlet of |
cial purposes, such as preserv- |
air flow. |
ing foods, works of art, etc. It is a |
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consumer air conditioner, not a |
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precision refrigeration system. |
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• There is risk of damage or loss of |
• It may cause product failure. |
property. |
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Do not touch the metal parts of |
Do not step on or put anyting on |
the product when removing the |
the product. (outdoor units) |
air filter. They are very sharp! |
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• There is risk of personal injury. |
• There is risk of personal injury and |
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failure of product. |
Service Manual 7
Safety Precautions
Always insert the filter securely. Clean the filter every two weeks or more often if necessary.
•A dirty filter reduces the efficiency of the air conditioner and could cause product malfunction or damage.
Do not insert hands or other |
Do not drink the water drained |
objects through the air inlet or |
from the unit. |
outlet while the air conditioner is |
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plugged in. |
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• There are sharp and moving parts |
• It is not sanitary and could cause |
that could cause personal injury. |
serious health issues. |
Use a firm stool or ladder when cleaning or maintaining the air conditioner.
• Be careful and avoid personal injury.
Replace the all batteries in the remote control with new ones of the same type. Do not mix old and new batteries or different types of batteries.
• There is risk of fire or explosion
■ Disuse
Do not recharge or disassemble the batteries. Do not dispose of batteries in a fire.
• They may burn or explode.
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.
•The chemicals in batteries could cause burns or other health hazards.
Dimensions
Dimensions
Symbols Used in this Manual
This symbol alerts you to the risk of electric shock.
This symbol alerts you to hazards that could cause harm to the air conditioner.
NOTICE This symbol indicates special notes.
Indoor Unit
Hanger Hole
W D
H
Pipe Hole |
Fix Hole |
Model
Dimension |
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INDOOR UNIT |
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W |
mm(inch) |
600(23.6) |
H |
mm(inch) |
600(23.6) |
D |
mm(inch) |
146(5.7) |
Service Manual 9
Dimensions
Outdoor Unit
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W |
L2 |
L1 |
D |
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L3 |
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H
L4
Gas side (3-way valve)
L5
Liquid side (2-way valve)
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MODEL |
9k, 12k Models |
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DIM |
unit |
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W |
mm |
770(30.3) |
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H |
mm |
540(21.3) |
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D |
mm |
245(9.6) |
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L1 |
mm |
285(11.2) |
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L2 |
mm |
64(2.5) |
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L3 |
mm |
518(20.4) |
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L4 |
mm |
10(0.4) |
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L5 |
mm |
100(3.9) |
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10 Room Air Conditioner
Product Specifications
Product Specifications
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Models |
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AS-C091F2G0(LA091CNP) |
AS-C121F2G0(LA121CNP) |
AS-H091F2G0(LA091HNP) |
AS-H121F2G0(LA121HNP) |
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AS-C091F2G0(LA090CP) |
AS-C121F2G0(LA120CP) |
AS-H091F2G0(LA090HP) |
AS-H121F2G0(LA120HP) |
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Cooling Capacity |
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kW |
2.87 |
3.37 |
2.87 |
3.37 |
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(Min~Rating~Max) |
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Btu/h |
9,800 |
11,500 |
9,800 |
11,500 |
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Heating Capacity |
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kW |
- |
- |
2.87 |
3.37 |
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(Min~Rating~Max) |
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Btu/h |
- |
- |
9,800 |
11,500 |
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Power Input |
Cooling/Heating |
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W |
980 |
1,100 |
980/980 |
1,100/1,100 |
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Running Current |
Cooling/Heating |
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A |
9.4 |
10 |
9.4/9.4 |
10/10 |
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Starting Current |
Cooling/Heating |
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A |
57.0 |
57.0 |
57.0/57.0 |
57.0/57.0 |
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EER |
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W/W |
2.93 |
3.06 |
2.93 |
3.06 |
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Btu/h.W |
10.0 |
10.5 |
10.0 |
10.5 |
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COP |
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W/W |
- |
- |
2.93 |
3.06 |
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Power Supply |
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Ø / V / Hz |
1/115/60 |
1/115/60 |
1/115/60 |
1/115/60 |
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Power Factor |
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% |
90.7 |
95.7 |
90.7 |
95.7 |
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Air Flow Rate |
Indoor,Max |
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m3/min(cfm) |
9.3(330) |
9.3(330) |
9.3(330) |
9.3(330) |
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Outdoor,Max |
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m3/min(cfm) |
25(883) |
25(883) |
25(883) |
25(883) |
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Moisture Removal |
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l/h |
1.4 |
1.4 |
1.4 |
1.4 |
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Sound Level |
Indoor,H/M/L |
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dB(A)+3 |
41/35/29 |
41/35/29 |
41/35/29 |
41/35/29 |
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Outdoor,Max |
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dB(A)+3 |
48 |
48 |
48 |
48 |
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Refrigerant & Charge(at |
7.5m) |
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g(oz) |
R410A, 900(31.8) |
R410A, 900(31.8) |
R410A, 900(31.8) |
R410A, 900(31.8) |
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Type |
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Rotary |
Rotary |
Rotary |
Rotary |
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Compressor |
Model |
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GK113CAA |
GK113CAA |
GK113CAA |
GK113CAA |
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Motor Type |
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PSC |
PSC |
PSC |
PSC |
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Oil Type |
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FVC68D(PVE) |
FVC68D(PVE) |
FVC68D(PVE) |
FVC68D(PVE) |
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Oil Charge |
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cc |
330 |
330 |
330 |
330 |
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O.L.P Name |
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MRA12053-12027 |
MRA12053-12027 |
MRA12053-12027 |
MRA12053-12027 |
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Fan(Indoor) |
Type |
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Turbo Fan |
Turbo Fan |
Turbo Fan |
Turbo Fan |
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Motor Output |
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W |
24 |
24 |
24 |
24 |
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Fan(outdoor) |
Type |
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Propeller |
Propeller |
Propeller |
Propeller |
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Motor Type |
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AC Induction |
AC Induction |
AC Induction |
AC Induction |
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Motor Output |
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W |
27 |
27 |
27 |
27 |
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Circuit Breaker* |
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A |
20 |
20 |
20 |
20 |
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Power Supply Cable |
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No.*mm2 |
3*2.5 |
3*2.5 |
3*2.5 |
3*2.5 |
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Power and Transmission Cable |
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No.*mm2+No.mm2 |
4*0.75 |
4*0.75 |
4*0.75 |
4*0.75 |
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Piping |
Liquid Side |
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mm(in) |
6.35(1/4) |
6.35(1/4) |
6.35(1/4) |
6.35(1/4) |
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Connections |
Gas Side |
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mm(in) |
12.7(1/2) |
12.7(1/2) |
12.7(1/2) |
12.7(1/2) |
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Drain Hose |
O.D , I.D |
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mm(in) |
21.5,16(0.85,0.63) |
21.5,16(0.85,0.63) |
21.5,16(0.85,0.63) |
21.5,16(0.85,0.63) |
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Indoor(W*H*D) |
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mm |
600*600*146 |
600*600*146 |
600*600*146 |
600*600*146 |
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Dimension |
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inch |
23.62*23.62*5.75 |
23.62*23.62*5.75 |
23.62*23.62*5.75 |
23.62*23.62*5.75 |
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Outdoor(W*H*D) |
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mm |
770*540*245 |
770*540*245 |
770*540*245 |
770*540*245 |
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inch |
30.31*21.26*9.65 |
30.31*21.26*9.65 |
30.31*21.26*9.65 |
30.31*21.26*9.65 |
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Net Weight |
Indoor |
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kg(lbs) |
15(33.1) |
15(33.1) |
15(33.1) |
15(33.1) |
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Outdoor |
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kg(lbs) |
32(70.5) |
32(70.5) |
32(70.5) |
32(70.5) |
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Tool Code(Chassis) |
Indoor + Outdoor |
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SF + UL |
SF + UL |
SF + UL |
SF + UL |
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Functions |
Temperature Control |
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Thermistor |
Thermistor |
Thermistor |
Thermistor |
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Plasma Filter |
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O |
O |
O |
O |
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Prefilter(washable/anti-fungus) |
O |
O |
O |
O |
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Auto Clean |
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O |
O |
O |
O |
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CHAOS Wind(Auto Wind) |
O |
O |
O |
O |
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Steps, Fan/Cool/Heat |
3/4 |
3/4 |
3/4/3 |
3/4/3 |
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Airflow Direction Control(up&down) |
Auto |
Auto |
Auto |
Auto |
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Airflow Direction Control(left&right) |
Auto |
Auto |
Auto |
Auto |
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Remocon Type |
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Wireless LCD |
Wireless LCD |
Wireless LCD |
Wireless LCD |
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Setting Temperature |
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Cooling |
18 ~ 30 |
18 ~ 30 |
18 ~ 30 |
18 ~ 30 |
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Range |
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Heating |
- |
- |
16 ~ 30 |
16 ~ 30 |
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Auto Operation (Micom Control) |
O |
O |
O |
O |
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Auto Changeover (Micom Control) |
O |
O |
O |
O |
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Self Diagnosis |
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O |
O |
O |
O |
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Timer |
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24h, On/Off |
24h, On/Off |
24h, On/Off |
24h, On/Off |
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Sleep Operation |
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O |
O |
O |
O |
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Soft Dry Operation |
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O |
O |
O |
O |
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Restart Delay(minute) |
3 |
3 |
3 |
3 |
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Deice Control(Defrost) |
- |
- |
O |
O |
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Hot Start |
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- |
- |
O |
O |
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Jet Cool |
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O |
O |
O |
O |
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Low Ambient Operation |
- |
- |
- |
- |
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Special Function |
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- |
- |
- |
- |
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Network Functions |
Dry Contact |
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- |
- |
- |
- |
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Network Solution(LGAP) |
- |
- |
- |
- |
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PI485 |
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- |
- |
- |
- |
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Note:
O : Applied, - : No relation
* For circuit breaker rating, please conform to local standards wherever necessary.
Some of functions are slightly different depending upon models.
The specification may be subject to change without notic for purpose of improvement.
Service Manual 11
Installation
Installation
Read carefully, and then follow step by step.
Installation
Parts
Installation guide map |
Type "A" screw and plastic anchor |
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Type "B" screw |
Remote control holder |
Installation
Tools
Figure |
Name |
Figure |
Name |
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Screw driver |
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Ohmmeter |
Electric drill |
Hexagonal wrench |
Measuring tape, Knife |
Ammeter |
Hole core drill |
Leak detector |
Spanner |
Thermometer, |
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Horizontal meter |
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Torque wrench |
Flaring tool set |
12 Room Air Conditioner
Installation
Installation
Map
NOTICE Installation parts you should purchase.
More than 73.9"(20cm)1
More than |
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19.6"(50cm) |
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(Left and right |
Sleeve |
are identical) |
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Bushing-Sleeve |
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Putty(Gum Type Sealer) |
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Bend the pipe as close as possible |
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on the wall but be careful so that it |
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may not break. |
More than 11.8"(30cm)
More than 28"(70cm)
Saddle
More than 
23.6"(60cm) 
More than
11.8"(30cm )
Vinyl tape (Wide) 
•To carry out the drainage test, remove the air filter
and pour water into the heat exchanger.
•Apply after carrying out a drainage test.
Gas side piping 
(Optional part)
Liquid side piping 
(Optional part)
Additional drain pipe
Vinyl tape (Narrow) 
Connecting cable
(Optional part)
Service Manual 13
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
-Compressor’s 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 |
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Capacity 120 |
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[%] |
100 |
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100 |
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93 |
89 |
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84 |
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80 |
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76 |
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60 |
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40 |
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20 |
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0 |
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R-410A |
100% |
70% |
50% |
30% |
0% |
R-22 |
0% |
30% |
50% |
70% |
100% |
4)High pressure.
-1.6 times higher than R-22.
-High Pressure refrigerant may cause personal injury.
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Boiling Pt.(°C) |
Vapor pressure(25°C)(kg f/cnf) |
Vapor density(25°C)(kg/m2) |
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R-410A |
-51.4 |
15.9 |
64 |
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R-22 |
-40.8 |
9.6 |
44.4 |
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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.
14 Room Air Conditioner
Installation
Select
the best
Location
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.
3.Make sure that condensation drainage can be conveniently routed away.
4.Do not install near a doorway.
5.Ensure that the interval between a wall and the left (or right) of the unit is more than 19.6"(50cm). The unit should be installed as high as possible on the wall, allowing a minimum of 7.9"(20cm) from ceiling.
6.Use a stud finder to locate studs to prevent unnecessary damage to the wall.
More than More than 
.9"(20cm) 19.6"(50cm) 
More than More than 
19.6"(50cm) 4.9ft(1.5m)
CAUTION: Install the indoor unit on the wall where the height from the floor is more than 4.9 feets(1.5 meters).
Outdoor unit
1.If an awning is built over the unit to prevent direct sunlight or rain exposure, make sure that heat radiation from the condenser is not restricted.
2.Ensure that the space around the back and sides is more than 11.8"(30cm). The front of the unit should have more than 28"(70cm) of space.
3.Do not place animals and plants in the path of the warm air.
4.Take the weight of the air conditioner into account and select a place where noise and vibration are minimum.
5.Select a place where the warm air and noise from the air conditioner do not disturb neighbors.
Rooftop Installations
More than 23.6"(60cm)
More than More than 11.8"(30cm) 11.8"(30cm)
More than |
More than |
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28"(70cm) |
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23.6"(60cm) |
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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.
Service Manual 15
Installation
Piping
Length
and
Elevation
Capacity |
Pipe Size |
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Standard |
Max. |
Max. |
Additional |
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Length |
Elevation |
length |
Refrigerant |
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(Btu/h) |
Suction |
Evap |
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m(ft) |
B m(ft) |
A m(ft) |
g/m(oz/ft) |
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9k, 12k |
Ø12.7mm(1/2") |
Ø6.35mm(1/4") |
7.5(25) |
7.5(25) |
15(49) |
20(0.22) |
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Indoor unit |
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Outdoor unit |
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Outdoor unit |
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A |
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Oil trap |
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Outdoor unit |
Indoor unit |
B |
Indoor |
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If piping length is more than 16.4ft(5m)
CAUTION: Capacity is based on standard length and maximum allowance length is on the basis of reliability.
Oil trap should be installed every 16.4~23feets (5~7 meters).
16 Room Air Conditioner
Installation
Preparing
Work for
Installation
Open panel front
1.Pull the upper part of the front panel.
2.Lift up the panel.
3.To detach the front panel, remove the two screws at the lower part.
4.Detach the front panel from the body.
5.To detach the panel, disconnect the connector at the upper part.
Panel Front |
Connector |
Cover pipe and cover side remove
1.Please remove the screw of the center tuning cover.
2.Pull up the side cover of desired connecting direction, then cover side is separated.
3.Pick the pipe hole of the side cover.
CAUTION: After removing the pipe hole, cut the burr for safety.
NOTICE When making pipe path through rear wall, you don’t need to pick the pipe hole.
Pipe hole |
Side cover |
Drain hose junction |
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1. Remove the rubber stopple in the desired drain direc- |
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tion. |
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2. Insert drain hose into the handle of drain pan, and |
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join drain hose and connecting hose according to the |
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figure by. |
Adhesive |
Only the |
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desired direction |
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Connecting |
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part |
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Drain |
rubber cap |
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hose |
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Service Manual |
17 |
Installation
Fixing
Indoor
Unit
1.Attach an Installation guide map on the desired surface.
INSTALLATION GUIDE MAP
2.Look at suited horizon by horizontal meter on the horizontal setting line, and fix lightly the map by adhesive tape.
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N G |
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ID |
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E M |
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3.Make a hole with a diameter of 6mm and depth of 30-35mm by piercing a screw
point.
GUIDE M
AP
4.Drill the pierted part as a diameter of 50mm for connecting piping. (In case of piercing rear surface)
5. Drive the fore plastic anchors into drilled
points. |
INSTALLATION |
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GUIDE |
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MAP |
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Plastic anchors
7.Hang the hole of product at the upper screws, and remove the map. (Falling
attention) INSTALLATION
GUIDE MAP
Hanger hole 
(Rear side of 
the product)
6.First, Drive the two points of the upper parts by screws. (Leave 10mm for hanging the product)
10mm |
INSTALLATION |
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8.Drive the lower parts after facing the hole of product with plastic anchors, and fix completely the upper screws.
Plastic anchors
9. Check the fixed product with light power. |
10. In case of nothing wrong, connect the |
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pipe and the wire. (Refer to installation |
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manual) |
Drill
a
Hole
in the
Wall
•Drill the piping hole with a ø 50mm hole core drill. Drill the piping hole at either the right or the left with the hole slightly slanted to the outdoor side.
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WALL |
Indoor |
Outdoor |
5-7mm |
(0.2~0.3") |
18 Room Air Conditioner
Flaring work and connection of piping
Flaring work and connection of piping
Flaring Work
Main cause for gas leakage is due to defect in flaring work. Carry out correct flaring work in the following procedure.
Cutting the pipes and the cable.
1.Use the piping kit accessory or the pipes purchased locally.
2.Measure the distance between the indoor and the outdoor unit.
3.Cut the pipes a little longer than measured distance.
4.Cut the cable 4.9ft(1.5m) longer than the pipe length.
Removing burrs
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.
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 flaring work)
Copper |
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Slanted Uneven Rough |
pipe |
90° |
Pipe
Reamer
Point down
Flare nut
Copper tube
Flaring work
1.Firmly hold copper pipe in a die in the dimension shown in the table below.
2.Carry out flaring work with the flaring tool.
Outside diameter |
A |
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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 |
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"A" |
Handle |
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Bar |
Bar |
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Yoke |
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Cone |
Copper pipe
Clamp handle
Red arrow mark
Service Manual 19
Flaring work and connection of piping
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.
Smooth all round
Inside is shiny without scratches
= Improper flaring =
Inclined Surface Cracked Uneven
damaged thickness
Even length all round
Connecting
the
Piping
Indoor
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
Drain hose
2. 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.
Loop
Gas side piping
Connecting cable
Liquid side piping
Drain hose
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.
20 Room Air Conditioner
Flaring work and connection of piping
Connecting the piping with the indoor unit and drain hose with drain pipe
1.Align the center of the pipings and sufficiently tighten the flare nut by hand.
2.Tighten the flare nut with a wrench.
Outside diameter |
Torque |
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mm |
inch |
kgf.cm |
Ø6.35 |
1/4 |
180~250 |
Ø9.52 |
3/8 |
340~420 |
Ø12.7 |
1/2 |
550~660 |
3.When extending the drain hose at the indoor unit, install the drain pipe.
Wrap the insulation material around the connecting portion.
1.Overlap the connection pipe insulation material and the indoor unit pipe insulation material. Bind them together with vinyl tape so that there may be no gap.
2.Wrap the area which accommodates the rear piping housing section with vinyl tape.
3.Bundle the piping and drain hose together by wrapping them with vinyl tape over the range within which they fit into the rear piping housing section.
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Indoor unit tubing |
Flare nut Pipings |
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Spanner (fixed)
Flare nut
Torque wrench |
Connection pipe |
Indoor unit tubing
Drain pipe
Indoor unit drain hose
Adhesive Vinyl tape(narrow)
Plastic bands Insulation material
Indoor
unit pipe
Wrap with vinyl tape
Connecting cable
Pipe
Vinyl tape(narrow)
Wrap with vinyl tape
Pipe
Vinyl tape(wide)
Drain hose
Service Manual 21
Flaring work and connection of piping
CAUTION: Installation Information
For right piping. Follow the instruction below.
Good case
• Press on the upper side of clamp and unfold the tubing to downward slowly.
Bad case
• Following bending type from left to right may cause damage to the turbing.
22 Room Air Conditioner
Flaring work and connection of piping
Connection
of
Piping -Outdoor
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.
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.
Outside diameter |
Torque |
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mm |
inch |
kgf.cm |
Ø6.35 |
1/4 |
180~250 |
Ø9.52 |
3/8 |
340~420 |
Ø12.7 |
1/2 |
550~660 |
Ø15.88 |
5/8 |
630~820 |
Ø19.05 |
3/4 |
980~1210 |
Outdoor unit
Liquid side piping (Smaller diameter)
Gas side 
piping (Bigger diameter)
Torque wrench
Service Manual 23
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