LG LMN120CE Schematic
website http://www.lgservice.com
LG
Multi Type Air Conditioner
SERVICE MANUAL
MODEL
• Indoor Unit:
Room Type
AMNH093D4A0(LMN090HE)
AMNH123DEA0 (LMN120HE)
AMNC093D4A0(LMN090CE)
AMNC123DEA0 (LMN120CE)
Art Cool Type
AMNH093APM0(LMAN090HNS)
AMNH123APM0(LMAN120HNS)
AMNC093APM0(LMAN090CNS)
AMNC123APM0(LMAN120CNS)
LG
• Outdoor Unit:
A2UH243FA0(LMU240HE)
A2UC243FA0 (LMU240CE)
CAUTION
• BEFORE SERVICING THE UNIT, READ THE SAFETY
PRECAUTIONS IN THIS MANUAL.
• ONLY FOR AUTHORIZED SERVICE PERSONNEL.
Multi type Air Conditioner Service Manual
TABLE OF CONTENTS
Model Number Nomenclature ....................................................................................................................3
Symbols Used in this Manual ...................................................................................................................4
Safety Precautions...............................................................................................................................
Dimensions...............................................................................................................................
Indoor Unit.....................................................................................................................
Outdoor Unit ....................................................................................................................
Product Specifications .............................................................................................................................13
Installation ...............................................................................................................................
Installation Parts..............................................................................................................
Installation Tools..............................................................................................................
Select the best location .........................................................................................................................16
Piping length and elevation ....................................................................................................................17
Fixing Installation Plate(Standart Type)..................................................................................................18
Preparing work for Installation (Artcool Type Only) ................................................................................19
Flaring Work and Connection of Piping..................................................................................................21
Flaring work............................................................................................................................................21
Connecting the Piping ............................................................................................................................22
Connecting the Cable between Indoor Unit and Outdoor Unit.............................................................30
Connect the cable to the Indoor unit. .....................................................................................................30
Connect the cable to the Outdoor unit....................................................................................................31
Connection method of the connecting cable(Example)..........................................................................32
Connect the cable to the indoor unit.......................................................................................................33
Checking the Drainage, Forming the Pipings and Long Pipe Setting .................................................34
Checking the drainage............................................................................................................................34
Forming the piping..................................................................................................................................35
Air Purging and Evacuation.....................................................................................................................36
Checking method ...................................................................................................................................36
Evacuation..............................................................................................................................................37
Charging ....................................................................................................................................................38
Test Running .............................................................................................................................................39
Operation ...................................................................................................................................................40
Function of control..................................................................................................................................40
Function of Indoor Unit ...........................................................................................................................45
Function of Outdoor Unit ........................................................................................................................47
Remote Control Operation .....................................................................................................................48
Disassembly ..............................................................................................................................................49
Indoor Unit..............................................................................................................................................49
Schematic Diagram...................................................................................................................................54
Electronic Control Device .......................................................................................................................54
Wiring Diagram.......................................................................................................................................58
Components Locations...........................................................................................................................59
Troubleshooting Guide .............................................................................................................................64
Refrigeration Cycle Diagram ..................................................................................................................64
Self-diagnosis Function ..........................................................................................................................65
Cycle Troubleshooting Guide..................................................................................................................66
Electronic Parts Troubleshooting Guide .................................................................................................67
General Information................................................................................................................................72
2-way, 3-way Valve ....................................................................................................................................78
Exploded View & Replacement Parts List ..............................................................................................82
Indoor Unit .............................................................................................................................................82
Outdoor Unit ..........................................................................................................................................86
.................
........................11
.......................12
..................
.......................15
.......................15
.......
11
15
5
2 Multi type Air Conditioner
Model Number Nomenclature
AMN H 3
09
4DA0
Serial Number
A2U H 324 F A 0
Electrical Ratings
MPS Variable Multi System Indoor Unit
Model Type
H: Heat Pump C: Cooling Only
Ex) 9,000 Btu/h '09', 12,000 Btu/h '12'
Nominal Cooling Capacity in Btu/h
Electrical Rating
3: 1Ø, 208~230V, 60Hz
Chassis Name
Indoor Unit Type
Wall mounted split
D : D- look type L : L- look type G : G- look type
M : M- look type N : N- look type
Artcool type
A : standard/wide type D : Deluxe type
B : Ceiling Concealed Duct
V : Ceiling & Floor(Convertible)
Function
A : Basic, L : Nano Plasma + Auto Clean(Wall Mounted)
C: Plasma(Ceiling Cassette), G: Low Static Motor
ART COOL(DELUXE) Type Front Panel Color
B : Blue, D : Wood, M : Metal, R : Mirror, W : White
R-410A MPS Variable Multi System Outdoor Unit
And No. of Connectable Indoor Units
Ex) A2U : Connectable max. 2 Indoor Units
Model Type
H: Heat Pump C: Cooling Only
Ex) 24,000 Btu/h '24', 36,000 Btu/h '36'
Nominal Cooling Capacity in Btu/h
3: 1Ø, 208~230V, 60Hz
Multi Type
Function
A : Basic
F : Free Joint Multi Type
Serial Number
Indoor Unit
Model Number Nomenclature
Outdoor Unit
Service Manual 3
Model Number Nomenclature
Operation
1 Unit
2 Unit
Combination of Indoor Unit(kBtu/h)
Cooling
Each Capacity
Unit-A Unit-B
UNIT-A(Btu/h) UNIT-B(Btu/h)
Total Btu/h kW
UNIT-A(Btu/h) UNIT-B(Btu/h)
Btu/h kW
Total Capacity Each Capacity Total Capacity
Heating
9
12
9
9
12
9
12
12
9
12
18
21
24
9000
12000
9000
9000
12000
-
-
9000
12000
12000
9000
12000
18000
21000
24000
2637
3516
5275
6154
7033
9000
12000
9000
9000
12000
-
-
9000
12000
12000
9000
12000
18000
21000
24000
2637
3516
5275
6154
7033
NOTICE
Combination table
Notes :
1.Cooling Capacity is based on : indoor temp. 26.7°C(80.1°F)DB, 19.4°C(66.9°F)WB; outdoor temp. 35°C(95°F)DB, 23.9°C(75°F)WB
2.Heating Capacity is based on : indoor temp. 21.1°C(70°F)DB, 15.6°C(60.1°F)WB; outdoor temp. 8.3°C(46.9°F)DB, 6.1°C(43°F)WB
3.The total ability of connected a indoor unit is up to 24k Btu/h
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.
This symbol indicates special notes.
4 Multi type Air Conditioner
Safety Precautions
WARNING
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.
WARNING
CAUTION
■ Meanings of symbols used in this manual are as shown below.
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to properties only.
Be sure not to do.
Be sure to follow the instruction.
■ Installation
Do not use a defective or underrated circuit breaker. Use this
appliance on a dedicated circuit.
• There is risk of fire or electric
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.
Service Manual 5
Safety Precautions
Do not modify or extend the
power cable.
• There is risk of fire or electric
shock.
For installation, always contact the dealer or an
Authorized Service Center.
• There is risk of fire, electric shock,
explosion, or injury.
Do not install, remove, or reinstall the unit by yourself
(customer).
• There is risk of fire, electric shock,
explosion, or injury.
Do not install the product on a
defective installation stand.
• It may cause injury, accident, or
damage to the product.
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 condenser and evaporator.
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.
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 furniture.
6 Multi type Air Conditioner
Take care to ensure that
power cable could not be
pulled out or damaged during
operation.
• There is risk of fire or electric
shock.
Do not place anything on the
power cable.
• There is risk of fire or electric
shock.
Safety Precautions
Do not plug or unplug the
power supply plug during
operation.
• There is risk of fire or electric
shock.
Do not allow water to run into
electric parts.
• It may cause There is risk of fire,
failure of the product, or electric
shock.
Do not touch(operate) the
product with wet hands.
• There is risk of fire or electrical
shock.
Do not store or use flammable
gas or combustibles near the
product.
• There is risk of fire or failure of
product.
Do not place a heater or other
appliances near the power
cable.
• There is risk of fire and electric
shock.
Do not use the product in a
tightly closed space for a long
time.
• Oxygen deficiency could occur.
When flammable gas leaks,
turn off the gas and open a
window for ventilation before
turn the product on.
• Do not use the telephone or turn
switches on or off. There is risk of
explosion or fire
Gasolin
If strange sounds, or small or
smoke comes from product.
Turn the breaker off or disconnect the power supply cable.
• There is risk of electric shock or
fire.
Stop operation and close the
window in storm or hurricane.
If possible, remove the product from the window before
the hurricane arrives.
• There is risk of property damage,
failure of product, or electric shock.
Service Manual 7
Safety Precautions
CAUTION
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.
When the product is soaked
(flooded or submerged), contact
an Authorized Service Center.
• There is risk of fire or electric
shock.
Ventilate the product from time to time when
operating it together with a stove, etc.
• There is risk of fire or electric shock.
Be cautious that water could
not enter the product.
• There is risk of fire, electric shock,
or product damage.
Turn the main power off when cleaning or
maintaining the product.
• There is risk of electric 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 product damage or failure, or unintended operation.
■ 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.
Take care to ensure that nobody could step on
or fall onto the outdoor unit.
• This could result in personal injury and product damage.
Keep level even when
installing the product.
• To avoid vibration or water leakage.
8 Multi type Air Conditioner
90°
Safety Precautions
Do not install the product
where the noise or hot air
Use two or more people to lift
and transport the product.
from the outdoor unit could
damage the neighborhoods.
• It may cause a problem for your
neighbors.
• Avoid personal injury.
■ Operational
Do not expose the skin directly to cool air for
long periods of time.
(Don't sit in the draft.)
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.
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.
• This could harm to your health.
Do not block the inlet or outlet
of air flow.
• It may cause product failure.
• There is risk of damage or loss of property.
Useasoftclothtoclean.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 touch the metal parts of
the product when removing the
air filter. They are very sharp!
• There is risk of personal injury.
Wax
Thinner
Service Manual 9
Safety Precautions
Donotsteponorputanyting
on the product. (outdoor
units)
• There is risk of personal injury and
failure of product.
Do not drink the water drained
from the product.
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.
Use a firm stool or ladder
when cleaning or maintaining
the product.
Do not insert hands or other
objects through the air inlet or
outlet while the product is
operated.
• There are sharp and moving parts
that could cause 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.
• It is not sanitary and could cause
serious health issues.
• Be careful and avoid personal
injury.
Do not recharge or disassemble the batteries.
Do not dispose of batteries in a fire.
• They may burn or explode.
• There is risk of fire or explosion
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.
10 Multi type Air Conditioner
Dimensions
Pipe Hole
Fix Hole
Hanger Hole
H
W
D
Installation plate
D
H
W
Indoor Unit
1. Split Type Indoor 2. Art Cool Type Indoor Unit
Dimensions
S pl it Ty p e A RT C OO L Ty pe
Model
Dimension
S4 SE
9 kBtu/h 12 kBtu/h 9 kBtu/h 12 kBtu/h
SP3
W mm 840 895 570
H mm 270 282 568
D mm 153 165 129
Service Manual 11
W
D
L1
L2
L4
L3
H
L7L5L6
Dimensions
Outdoor Unit
MODEL
DIM
W mm 870
H mm 800
D mm 320
L1 mm 370
L2 mm 25
L3 mm 775
L4 mm 25
L5 mm 546
L6 mm 160
L7 mm 160
UE1
24kBtu/h
12 Multi type Air Conditioner
Product Specifications
Indoor Unit
Product Specifications
Indoor Unit Type
Model
Nominal Cooling Capacity kcal/h(W)
Nominal Heating Capacity kcal/h(W)
Air Circulation H/M/L CMM(CFM)
Setting temperature range(cool/heat) °C
Fan motor Output W
Fan Type
Noise Level (Sound Press,1m)
Temperature controller
Coil Tube Size (OD) inch(mm)
Dehumidification Rate l/h
Dimensions (W*H*D) inch(mm)
Net Weight kg(lbs)
Piping Connection Liquid inch(mm)
Packing Dimension (W*H*D) inch(mm)
Stuffing Quantity With(Without) S/Parts 20/40ft(hi-c)
Nominal Cooling Capacity kcal/h(W)
Nominal Heating Capacity kcal/h(W)
Air Circulation H/M/L CMM(CFM)
Setting temperature range(cool/heat) °C
Fan motor Output W
Fan Type
Noise Level (Sound Press,1m)
Temperature controller
Coil Tube Size (OD) inch(mm)
Dehumidification Rate l/h
Dimensions (W*H*D) inch(mm)
Net Weight kg(lbs)
Piping Connection Liquid inch(mm)
Packing Dimension (W*H*D) inch(mm)
Stuffing Quantity With(Without) S/Parts 20/40ft(hi-c)
★
Btu/h
★
Btu/h
Model
Input V
Running Current A
No. Used / Diameter EA/inch(mm)
H/M/L dBA
Fins per inch
No.ofRows&Column
Gas inch(mm)
Drain hose (ID Ø)mm
Indoor Unit Type
Model
★
Btu/h
★
Btu/h
Model
No.ofPoles
Input V
Running Current A
No. Used / Diameter EA/inch(mm)
H/M/L dBA
Fins per inch
No.ofRows&Column
Gas inch(mm)
Drain hose (ID Ø)mm
Wall Mounted
AMNC093D4A0(LMN090CE) AMNH093D4A0(LMN090HE) AMNC123DEA0 (LMN120CE) AMNH123DEA0 (LMN120HE)
2,267(2,637) 2,267(2,637) 3,023(3,516) 3,023(3,516)
9,000 9,000 12,000 12,000
- 2,267(2,637) - 3,023(3,516)
- 9,000 - 12,000
8.2(289) 8.2(289) 9.4(332) 9.4(332)
18~30 16~30 18~30 16~30
15 15 15 15
DL-88430LGIF DL-88430LGIF DL-88430LGIF DL-88430LGIF
DC36 DC36 DC36 DC36
0.15 0.15 0.15 0.15
Cross Flow Fan Cross Flow Fan Cross Flow Fan Cross Flow Fan
1/3.74(95) 1/3.74(95) 1/3.74(95) 1/3.74(95)
31 / 29 / 22 31 / 29 / 22 36 / 32 / 29 36 / 32 / 29
Thermistor Thermistor Thermistor Thermistor
0.197(5.0) 0.197(5.0) 0.197(5.0) 0.197(5.0)
20 20 18 18
2R,15C 2R,15C 2R,15C 2R,15C
- 1.1 - 1.2
33.0*10.6*6.0(840*270*153) 33.0*10.6*6.0(840*270*153) 35.2*11.1*6.5(895*282*165) 35.2*11.1*6.5(895*282*165)
7(15.4) 7(15.4) 9.5(20.9) 9.5(20.9)
1/4 (6.35) 1/4 (6.35) 1/4 (6.35) 1/4 (6.35)
3/8 (9.52) 3/8 (9.52) 3/8 (9.52) 3/8 (9.52)
20 20 20 20
35.7*13.1*8.8(906*332*223) 35.7*13.1*8.8(906*332*223) 38.3*9.1*14.6(973*231*372) 38.3*9.1*14.6(973*231*372)
440/910 (1091) 440/910 (1091) 353/719 (792) 353/719 (792)
Artcool
AMNC093APM0(LMAN090CNS) AMNH093APM0(LMAN090HNS) AMNC123APM0(LMAN120CNS) AMNH123APM0(LMAN120HNS)
2,267(2,637) 2,267(2,637) 3,023(3,516) 3,023(3,516)
9,000 9,000 12,000 12,000
- 2,267(2,637) - 3,023(3,516)
- 9,000 - 12,000
7.5(264) 7.5(264) 8.5(300) 8.5(300)
18~30 16~30 18~30 16~30
24 24 24 24
DL-89812LGIB DL-89812LGIB DL-89812LGIB DL-89812LGIB
DC36 DC36 DC36 DC36
1.5 1.5 1.5 1.5
Turbo Fan Turbo Fan Turbo Fan Turbo Fan
1/24.32(617.7) 1/24.32(617.7) 1/24.32(617.7) 1/24.32(617.7)
37 / 31 / 27 37 / 31 / 27 43 / 39 / 31 43 / 39 / 31
Thermistor Thermistor Thermistor Thermistor
0.197(5.0) 0.197(5.0) 0.197(5.0) 0.197(5.0)
20 20 20 20
2R,20C 2R,20C 2R,20C 2R,20C
- 1.1 - 1.4
22.4*22.4*5.1(570*568*129) 22.4*22.4*5.1(570*568*129) 22.4*22.4*5.1(570*568*129) 22.4*22.4*5.1(570*568*129)
9(19.84) 9(19.84) 9(19.84) 9(19.84)
1/4 (6.35) 1/4 (6.35) 1/4 (6.35) 1/4 (6.35)
3/8 (9.52) 3/8 (9.52) 3/8 (9.52) 3/8 (9.52)
20 20 20 20
26.2*25.7*9.1(665*653*231) 26.2*25.7*9.1(665*653*231) 26.2*25.7*9.1(665*653*231) 26.2*25.7*9.1(665*653*231)
237/534(239/539) 237/534(239/539) 237/534(239/539) 237/534(239/539)
Note : 1.★See the page "Combination Table"
2. Due to our policy of innovation some specifications may be changed without notification.
Service Manual 13
Product Specifications
Outdoor Unit - Multiple piping models
Model
Cooling Capacity★ Btu/hr
Heating Capacity★ Btu/hr
Input★ Cooling W
Running Current★(208/230V)
Power Supply Ø,V,Hz
Max. Number of Connectable Indoor Units
Compressor Type
(Constant) Model
Compressor Type
(Constant) Model
Refrigerant charge Charge g(oz)
Coil Tube Size (OD) inch(mm)
Fan motor Model
Fan Type
Air Circulation Outdoor CMM(CFM)
Noise Level(H/L) at 230V
Defrosting
SVC Valve Liquid inch(mm)
Dimensions W*H*D inch(mm)
Net Weight Outdoor kg(lbs)
Max. Interunit Piping Length
Max. Installation Indoor Unit~Outdoor Unit m
Height Difference Indoor Unit~Indoor Unit m
Packing Dimension W*H*D inch(mm)
Testing Combinations
Stuffing Quantity 20/40ft
Notes: 1. Capacities are based on the following conditions:
2. Capacities are Net Capacities.
3.
★
: See the page "Combination Table"
4. Due to our policy of innovation some specifications may be changed without notification.
Heating W
Cooling A
Heating A
Motor Type
Quantity Ea
Motor Input W
Oil Charge cc
Oil Type
Capacitor µF/Vac
O.L.P Type(model name)
Motor Type
Quantity Ea
Motor Input W
Oil Charge cc
Oil Type
Capacitor µF/Vac
O.L.P Type(model name)
Type
Control
Fins per inch
No.ofRows&Column/No.
Output W
Capacitor µF/Vac
No. Used / Diameter EA/inch(mm)
Discharge Side / Top
Sound Press,1m dB(A) 1
Gas
Total of Each Room m
For One Room m
Cooling: -Indoor Temperature 26.7°C(80.1°F)DB/19.4°C66.9°F)WB
-Outdoor Temperature 35°C(95°F)DB/23.9°C(75°F)WB
-Interconnecting Piping Length 7.5m
-Level Difference of Zero.
Heating: -Indoor Temperature 21.1°C(70°F)DB/15.6°C(60.1°F)WB
-Outdoor Temperature 8.3°C(46.94°F)DB/6.1°C(42.98°F)WB
-Interconnecting Piping Length 7.5m
-Level Difference of Zero.
W
kcal/hr
W
kcal/hr
A2UC243FA0(LMU240CE) A2UH243FA0(LMU240HE)
External Type(MRA98996-12026) External Type(MRA98996-12026)
External Type(MRA12105-12026) External Type(MRA12105-12026)
34.3*31.5*12.6 (870*800*320) 34.3*31.5*12.6 (870*800*320)
40.2*34.3*17.3 (1020*870*440) 40.2*34.3*17.3 (1020*870*440)
9,000~24,000 9,000~24,000
2637~7033 2637~7033
2267~6037 2267~6037
- 9,000~24,000
- 2637~7033
- 2267~6037
1170~2390 1170~2390
- 1220~2440
7.7~10.1 7.7~10.1
- 7.4~9.8
1,208/230,60 1,208/230,60
22
Rotary Rotary
GK094K GK094K
Hermetic Hermetic
11
955 955
330±10 330±10
FVC68D FVC68D
30 / 370 30 / 370
Rotary Rotary
GK141K GK141K
Hermetic Hermetic
11
1430 1,430
350±10 350±10
FVE FVE
35 / 370 35 / 370
1600 1600
R410A R410A
L.E.V L.E.V
0.276(7.0) 0.276(7.0)
18 18
2R,36C 2R,36C
IC-1640LG GE IC-1640LG GE
90 90
6/370 6/370
Propeller Propeller
1 / 460 1 / 460
Side Side
53(1872) 53(1872)
54 54
- Invertion Cycle
1/4 (6.35) * 2EA 1/4 (6.35) * 2EA
3/8 (9.52) * 2EA 3/8 (9.52) * 2EA
69(152) 69(152)
30 30
15 15
7.5 7.5
7.5 7.5
SE12K+SE12K SE12K+SE12K
54/114 54/114
14 Multi type Air Conditioner
Installation
Type "A" screw and plastic anchor
Type "B" screw
Remote Control Holder
Installation plate
Figure FigureName
Screw driver
Electric Drill
Measuring Tape, Knife
Hole Core Drill
Spanner
Torque wrench
Ohmmeter
Hexagonal wrench
Ammeter
Gas Leak Detector
Thermometer,
Level
Flaring Tool Set
Name
Read carefully, and then follow step by step.
Installation Parts
Installation
Installation Tools
Service Manual 15
Installation
More than 5cm
(2.0 inch)
More than 5cm
(2.0 inch)
More than 2.3m
(90.6 inch)
More than 5cm
(2.0 inch)
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 the spaces indicated by arrows from the wall,
ceiling, fence or other obstacles.
6. Use a stud finder to locate studs to prevent unnecessary damage to the wall.
More than 10cm
CAUTION: Install the indoor unit
on the wall where the height from
the floors more than 2.3m(7.5ft).
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 spaces indicated by arrows around
front, back and side of the unit.
3. Do not place animals and plants in the path of the
warm air.
4. Take the air conditioner weight into account and
select a place where noise and vibration are minimum.
Select a place so that the warm air and sound from
5.
the air conditioner do not disturb neighbors.
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.
More than 50cm
More than 50cm
More than 2m
more than 20cm
(7.9 inch)
more than 20cm
(7.9 inch)
more than 70cm
(27.6 inch)
16 Multi type Air Conditioner
Piping length and elevation
B
h2
h1
A
B
h1
Multi Piping Type
Installation
Capacity(Btu/h)
Max total length of
all pipes (A+B)
Max length of each
pipe (A/B)
Minlengthofeach
pipe (A/B)
Max Elevation
between each
indoor unit and out-
Max elevation
between indoor
door unit (h1)
24k 30m(100ft) 15m(50ft) 3m(10ft) 7.5m(25ft) 7.5m(25ft)
Pipe Size
Indoor Capacity
(Btu/h)
Gas Liquid Standard Length Additional Refrigerant
9K 3/8" 1/4" 7.5m(25ft) 20g/m(0.32oz/ft)
12K 3/8" 1/4" 7.5m(25ft) 20g/m(0.32oz/ft)
24k
units (h2)
CAUTION: Capacity is based on standard length and maximum allowance length is on the
basis of reliability. Oil trap should be installed every 5~7 meters (16.4~23.0ft).
Service Manual 17
Installation
Installation Plate
Type "A" screw
Chassis
Hook
Fixing Installation Plate(Standard Type)
The wall you select should be strong and solid enough to
prevent vibration
1. Mount the installation plate on the wall with
type "A" screws. If mounting the unit on a concrete wall,
use anchor bolts.
• Mount the installation plate horizontally by aligning the
centerline using a level.
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.
CHASSIS
(Grade)
S4 50 105 59 105
SE 65 110 85 110
ABCD
Distance (mm)
D
C
Ø70mm
Left rear piping Right rear piping
Installation plate
B
A
Ø70mm
18 Multi type Air Conditioner
Installation
NOTICE
Panel Front
Connector
Preparing work for Installation (Artcool Type Only)
Open panel front
1. First, push the front panel backward and lift it up to remove the two screws.
2. The moment of lifting the both lower parts of panel front, you can hear sound this panel came out, In this time panel front is
separated
3. After pull down this panel a bit, and separate connecting wire with product.
Remove cover pipe and cover side
1. Remove two screws(for fixing cover pipe)
2. Pull up the cover side of desired connecting direction, then cover
side is separated.
3. In case of connecting direction is left or right, path through the
hole of cover side.
CAUTION: After removing the pipe hole, cut the
burr for safety.
When connecting pipe path through rear
wall, don’t remove the hole.
Drain hose junction
1. Remove the rubber stopple of desired direction of
drainage.
2. As the following picture, Insert drain hose in the
handle of drain pan, and join drain hose and connecting hose.
Pipe hole
Adhesive
Only one
desiring direction
Connecting
Drain
hose
part
rubber cap
Service Manual 19
Installation
Plastic anchors
INSTALLATION GUIDE MAP
10mm
INSTALLATION GU
INSTAIIATION GUIDE MAP
INSTALLATION GUIDE MAP
1. Put an Installation Guide Map on the desired
surface.
2. Make a hole with diameter of 6mm and depth of
30-35mm when piercing a screw point.
3. Drive the fore plastic anchors into drilled points.
4. Hang the hole of product at the upper screws.
(In this time, Remove the map)
(Falling attention)
5. Check the fixed product with light power.
6. Look at suited horizon by horizontal meter on
the horizontal setting line, and Fix lightly the
map by adhesive tape.
7. Drill the piercing part for connecting pipe as
diameter 50mm. (In case of piercing rear surface)
Refer to No. 5 on this page when making a hole in the wall.
8. First, Drive the two points of the upper parts by
screws. (Leave 10mm for hanging product)
9. Drive the lower parts after facing the hole of
product with plastic anchors, and fix completely
the upper screws.
In case of nothing wrong in the matter,
connect the pipe and the wire.
(Installation manual reference)
Horizontality
INSTALLATION GUIDE MAP
Plastic anchors
INSTALLATION GUIDE MAP
Hanger hole
(Rear side of
product)
5-7mm
(0.2~0.3")
Indoor
WALL
Outdoor
■ Sticking the installation guide map and
fixing Indoor unit
20 Multi type Air Conditioner
■ Drill a hole in the wall
• Drill the piping hole with a ø50mm 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 and Connection of Piping
Copper
pipe
90°
Slanted Uneven Rough
Bar
Copper pipe
Clamp handle
Red arrow mark
Cone
Yoke
Handle
Bar
"A"
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.
Cut the pipes and the cable.
1. Use the piping kit accessory or the pipes purchased locally.
2. Measure the distance between the indoor and the outdoor unit.
3. Cut the pipes a little longer than measured distance.
4. Cut the cable 1.5m (5.0ft) longer than the pipe length.
Burrs removal
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.
Pipe
Reamer
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)
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.
Outside diameter A
mm inch mm
Ø6.35 1/4 0~0.5
Ø9.52 3/8 0~0.5
Point down
Flare nut
Copper tube
Service Manual 21
Flaring Work and Connection of Piping
Inclined
Inside is shiny without scratches
Smooth all round
Even length
all round
Surface
damaged
Cracked Uneven
thickness
= Improper flaring =
Check
1. Compare the flared work with the figure by.
2. If a flared section is defective, cut it off and do flaring work
again.
Connecting the Piping
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 right rear piping
1. Route the indoor tubing and the drain hose in the direction
of rear right.
2.
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.
•
3. 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 uper side can cause drain pan to
overflow inside the unit.
If the drain hose is routed inside the room, insulate the hose
with an insulation material* so that dripping from "sweating"(condensation) will not damage furniture or floors.
*Foamed polyethylene or equivalent is recommended.
Make a small loop with the cable for easy connection later.
Drain hose
Tape
Connecting
pipe
Drain hose
Connecting cable
Drain hose
Connecting
cable
Drain hose
Loop
Gas side piping
Liquid side piping
22 Multi type Air Conditioner
4. Indoor unit installation
Drain hose
Connecting
cable
Hook the indoor unit onto the upper portion of the installation plate.(Engage the two hooks of the rear 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.
Press the lower left and right sides of the unit against the
installation plate until the hooks engage into their
slots(clicking sound).
Connecting the piping to the indoor unit and drain hose
to drain pipe.
1. Align the center of the pipes and sufficiently tighten the
flare nut by hand.
2. Tighten the flare nut with a wrench.
Outside diameter Torque
mm inch kg.m
Ø6.35 1/4 1.8
Ø9.52 3/8 4.2
3. When extending the drain hose at the indoor unit, install
the drain pipe.
Flaring Work and Connection of Piping
Indoor unit tubing Flare nut Pipes
Open-end wrench (fixed)
Flare nut
Wrench
Indoor unit tubing
Connection 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 for enough to cover where they fit into
the rear piping housing section.
Drain pipe
Connection pipe
Vinyl tape (wide)
Connecting cable
Pipe
Indoor unit drain hose
Vinyl tape(narrow)
Adhesive
Plastic bands
Insulation material
Wrap with vinyl tape
Vinyl tape(narrow)
Wrap with vinyl tape
Indoor unit pipe
Pipe
Drain hose
Vinyl tape(wide)
Service Manual 23
Flaring Work and Connection of Piping
For left rear piping
1. Route the indoor tubing and the drain hose to the required
piping hole position.
2. Insert the piping, drain hose, and the connecting cable into
the piping hole.
3.
Insert the connecting cable into the indoor unit.
• Don't connect the cable to the indoor unit.
• Make a small loop with the cable for easy connection
later.
4. Tape the drain hose and the connecting cables.
5. Indoor unit installation
• Hang the indoor unit from the hooks at the top of the
installation plate.
• Insert the spacer etc. between the indoor unit and the
installation plate and separate the bottom of the indoor
unit from the wall.
Connecting the piping to the indoor unit and the drain
hose to drain pipe.
1. Align the center of the pipes and sufficiently tighten the
flare nut by hand.
1 2
Connecting
cable
Drain pipe
Indoor unit
Spacer
Installation plate
8cm
2. Tighten the flare nut with a wrench.
Outside diameter Torque
mm inch kg.m
Ø6.35 1/4 1.8
Ø9.52 3/8 4.2
3. When extending the drain hose at the indoor unit, install
the drain pipe.
24 Multi type Air Conditioner
Indoor unit tubing Flare nut Pipes
Open-end wrench (fixed)
Flare nut
Wrench
Indoor unit tubing
Drain hose
Indoor unit drain hose
Adhesive
Vinyl tape
Connection pipe
(narrow)
Wrap the insulation material around the connecting por-
Plastic bands
Insulation material
tion.
1. Overlap the connection pipe heat insulation and the indoor
unit pipe heat 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 cloth tape over the range within which they fit
into the rear piping housing section.
Reroute the pipings and the drain hose across the back
of the chassis.
Flaring Work and Connection of Piping
Connection
pipe
Vinyl tape
(wide)
Connecting cable
Drain hose
Wrap with vinyl tape
Pipe
Vinyl tape(narrow)
Pipe
Vinyl tape(narrow)
Wrap with
vinyl tape(wide)
Indoor
unit piping
Indoor unit installation
1. Remove the spacer.
2. Ensure that the hooks are properly seated on the installation plate by moving it left and right.
3. Press the lower left and right sides of the unit against the
installation plate until the hooks engage into their
slots(clicking sound).
Piping for
passage through
piping hole
Connecting
cable
Drain hose
Service Manual 25
Flaring Work and Connection of Piping
Panel Front
Connector
■ Panel Assembly(Art Cool Type only)
1. First, Check the side cover assembly exactly, Fix
power cord in the bottom groove of cover side
left.
2. Assemble connecting lead wire with controller
and first fix the upper part of panel front, then
match the lower part of panel front
3. Drive two screws.
26 Multi type Air Conditioner
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