LG AS-H306DGM0 User Manual

Room Air Conditioner

SVC MANUAL(Exploded View)

MODEL :

AS-H306DGM0(S30AHP-ND6/UD6) LS-C306DGB0(S326GC SD0) LS-C306DGB0(S306GC SD0) LS-C306DGM1(S306GP SD1) LSNC306DGB0.AMBAIDA LS-H306DGB0(S306GH SD0) LS-H306DGM1(S326GQ SD1) LS-H306DGM1(S306GQ SD1) LS-H306DGM1(S30LHP) LS-C302DGB1(S302CG SD1) LS-C302DGM1(S302CP SD1) LS-C362DGB1(S362CG SD1)

CAUTION

Before Servicing the unit, read the safety precautions in General SVC manual. Only for authorized service personnel.

Internal Use Only

http://biz.lgservice.com

LS-C362DGM1(S362CP SD1) LS-H366DGM1(S366GQ SD1) LS-H366DGB0(S366GH SD0) LS-C366DGM1(S366GP SD1) LS-C366DGB0(S366GC SD0) LS-C366DGB0(S386GC SD0) LS-H366DGM1(S386GQ SD1) LS-H362DGB1(S362HG SD1) AS-W246DGH0(S25AWN-ND6/UD6) AS-H366DGM1(S36AHP-ND6/UD6) AS-H366DGM2(S36AHP-ND7/UD7)

- 2 -

LGE Internal Use Only

Air Conditioner Service Manual

TABLE OF CONTENTS

LG Model Name ...............................................................................................................................................3

Safety Precautions..........................................................................................................................................5

Dimensions....................................................................................................................................................10

Symbols Used in this Manual...................................................................................................................10

Indoor Unit................................................................................................................................................10

Product Specifications ................................................................................................................................13

Installation .....................................................................................................................................................16

Selection of the Best Location..................................................................................................................16

Piping Length and Elevation.....................................................................................................................16

How to Fix Installation Plate.....................................................................................................................17

Drill a Hole in the Wall..............................................................................................................................17

Drain hose junction...................................................................................................................................17

Flaring work and connection of piping .......................................................................................................18

Flaring work..............................................................................................................................................18

Connection of piping -- Indoor..................................................................................................................18

Connection of the pipes-Outdoor .............................................................................................................22

Connecting the cable between indoor unit and outdoor unit ...................................................................23

Connect the cable to the Indoor unit. .......................................................................................................23

Connect the cable to the outdoor unit ......................................................................................................24

Checking the drainage and forming the pipings........................................................................................25

Checking the drainage .............................................................................................................................25

Form the piping ........................................................................................................................................25

AIR PURGING ................................................................................................................................................26

Air purging................................................................................................................................................26

Air purging with vacuum pump.................................................................................................................26

TEST RUNNING .............................................................................................................................................28

Operation .......................................................................................................................................................29

Function of Controls .................................................................................................................................29

Portection from overheating of power module..........................................................................................33

Portection from overheating of compressor .............................................................................................33

Display Function ......................................................................................................................................34

Self-diagnosis Function............................................................................................................................34

Remote Control Operations......................................................................................................................35

Disassembly ..................................................................................................................................................36

Indoor Unit................................................................................................................................................36

Schematic Diagram.......................................................................................................................................39

Electric Control Device.............................................................................................................................39

Wiring Diagram.........................................................................................................................................41

Components Location ..............................................................................................................................50

Troubleshooting Guide.................................................................................................................................54

Refrigeration Cycle Diagram ....................................................................................................................54

2-way, 3-way Valve .................................................................................................................................56

Cycle Parts...............................................................................................................................................62

Electronic Parts ........................................................................................................................................63

Exploded View...............................................................................................................................................70

- 3 -

LGE Internal Use Only

LG Model Name

2003

12 - 345678910

Code Type Code of Model Meaning

1 Producing Center, A~Z L: Chang-won R22 N: India

Refrigerant A: Chang-won R410A Z: Brazil

C: Chang-won R407C D: Indonesia T: China M: Mexico K: Turkey R22 V: Vietnam E: Turkey R410A S: Out Sourcing H: Thailand

2 Product Type A~Z S: Split Type Air Conditioner

3 Cooling/Heating/Inverter A~Z C: Cooling only

H: Heat pump X: C/O + E/Heater Z: H/P + E/Heater

V: AC Inverter C/O N: AC Inverter H/P Q: DC Inverter C/O W: DC Inverter H/P

4, 5 Capacity 0~9 Cooling/Heating Capacity

Ex. "09" → 9,000 Btu/h

6 Electric Range 1~9 1: 115V/60Hz, A: 220V, 50Hz, 3Phase

A~Z 2: 220V/60Hz B: 208~230V, 60Hz, 3Phase

3: 208-230V/60Hz C: 575V, 50Hz, 3Phase 5: 200-220V/50Hz D: 440~460, 60Hz, 3Phase 6: 220-240V/50Hz E: 265V, 60Hz 7: 110V, 50/60Hz F: 200V, 50/60Hz 8: 380-415V/50Hz 9: 380-415V/60Hz

7 Chassis A~Z Name of Chassis of Unit

Ex. LSP → SP Chassis

8 Look A~Z Look,

Color (Artcool Model)

9 Function A~Z

10 Serial No. 1~9 LG Model De

* ARTCOOL COLOR

velopment Serial No.

Basic A Basic+4Way B Plasma Filter C Plasma Filter+4 Way D Tele+LCD E Tele+LCD+Nano plasma+4Way F Nano Plasma F+(A/changeove)+A/clean+Low A G Nano Plasma F+(A/changeove)+A/clean+4way+Low A H Tele+LED+4way I Internet J Plasma F+4Way+Oxy generator K Nano Plasma F+(A/changeove)+A/clean L Nano Plasma F+(A/changeove)+A/clean+4way M Nano Plasma F+(A/changeove)+A/clean+PTC N Nano Plasma F+(A/changeove)+Autoclean+4way+PTC P Nano Plasma F+(A/changeove)+A/clean+4way+Low A+PTC Q Negative ION+A/Clean R (Nano)Plasma+Negative ION+A/Clean S 4way+(Nano)Plasma F+Negative ION+Healthy dehumidification+A/Clean

T

Nano Plasma F+4Way+(A/changeove)+A/clean+ U

R Mirror W White B Blue D Wood M Metal C Cherry

- 4 -

LGE Internal Use Only

LG Model Name

2004~

12 - 345678910

Code Type Code of Model Meaning

1 Producing Center, A~Z

L Chang_won R22 A Chang_won R410A C Chang_won R407C T China K Turkey R22 E Turkey R410A H Thailand

N India Z Brazil D Indonesia X Mexico V Vietnam S Out sourcing

Refrigerant

2 Product Type A~Z S: Split Type Air Conditioner

3 Cooling/Heating/Inverter A~Z C: Cooling only

H: Heat pump X: C/O + E/Heater Z: H/P + E/Heater

V: AC Inverter C/O N: AC Inverter H/P Q: DC Inverter C/O W: DC Inverter H/P

4, 5 Capacity 0~9 Cooling/Heating Capacity

Ex. "09" → 9,000 Btu/h

6 Electric Range 1~9 1: 115V/60Hz, A: 220V, 50Hz, 3Phase

A~Z 2: 220V/60Hz B: 208~230V, 60Hz, 3Phase

3: 208-230V/60Hz C: 575V, 50Hz, 3Phase 5: 200-220V/50Hz D: 440~460, 60Hz, 3Phase 6: 220-240V/50Hz E: 265V, 60Hz 7: 110V, 50/60Hz F: 200V

CHASSIS Look

D K

L G M N D P

Division Panel Type(Deluxe) Fighting 'Look'

(LG1) (LG2)-SEMI PANEL OEM1 OEM2 Panel Type(Deluxe) LG3

, 50/60Hz 8: 380-415V/50Hz 9: 380-415V/60Hz

7 Chassis A~Z Name of Chassis of Unit

Ex. LSP → SP Chassis

8 Look A~Z Look,

Color (Artcool Model)

9 Function A~Z

10 Serial No. 1~9 LG Model De

* ARTCOOL COLOR

velopment Serial No.

R Mirror W White B Blue D Wood M Metal C Cherry

S4/S5

S6 SQ SR

ST

Basic A Basic+4Way B Plasma Filter C Plasma Filter+4 Way D Tele+LCD E Tele+LCD+Nano plasma+4Way F NBF F+(A/changeove)+A/clean+Low A G NBF F+(A/changeove)+A/clean+4way+Low A H Tele+LED+4way I Internet J Plasma F+4Way+Oxy generator K NBF F+(A/changeove)+A/clean L NBF F+(A/changeove)+A/clean+4way M NBF F+(A/changeove)+A/clean+PTC N NBF F+(A/changeove)+Autoclean+4way+PTC P NBF F+(A/changeove)+A/clean+4way+Low A+PTC Q (Nano)Plasma+ION+A/Clean S 4way+(Nano)Plasma F+

Negative ION+Healthy dehumidification

+A/Clean T Nano Plasma F+4Way+(A/changeove)+A/clean+Oxy generator U 4way+(Nano)Plasma F+Negative ION+Healthy dehumidification+A/Clean+Oxy generator

V Dry contact W Wire remocon 8

- 5 -

LGE Internal Use Only

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.

■ 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.

Do not use damaged power cords, plugs, or a loose socket.

Always use the power plug and socket with the ground terminal.

• There is risk of fire of electric shock. • There is risk of electric shock.

Install the panel and the cover of control box securely.

.Do not modify or extend the power cord.

• There is risk of fire of electric shock. • No grounding may cause electric shock.

■ Installation

- 6 -

LGE Internal Use Only

Safety Precautions

Do not install the product on a defective installation stand.

Be sure the installation area does not deteriorate with age.

• It may cause injury, accident, or damage to the product.

• If the base collapses, the air conditioner could fall with it, causing property damage, product failure, and personal injury.

• Sharp edges could cause injury. Be especially careful of the case edges and the fins on the condenser and evaporator.

•

There is risk of fire, electric shock, explosion, or injury.

Be cautious when unpacking and installing the product.

For installation, always contact the dealer or an Authorized service center

For re-installation of the installed product, always contact a dealer or an authorized service center.

Do not install, remove, or re-install the unit by yourself.

• There is risk of fire, electric shock, explosion, or injury.

- 7 -

LGE Internal Use Only

Safety Precautions

■ Operation

Do not turn the air-conditioner ON or OFF by plugging or unplugging the power plug.

Use a dedicated outlet for this appliance.

• There is risk of fire or electrical shock. • There is risk of fire or electrical shock.

Grasp the plug to remove the cord from the outlet. Do not touch it with wet hands.

Do not place a heater or other appliances near the power cable.

• There is risk of fire or electrical shock. • There is risk of fire and electric shock.

Do not allow water to run into electrical parts. Do not store or use flammable gas or com-

bustibles near the air conditioner.

• There is risk of fire, failure of the product, or electric shock.

• There is risk of fire or failure of product.

Wax

Thinner

- 8 -

LGE Internal Use Only

Always check for gas (refrigerant) leakage after installation or repair of product.

Install the drain hose to ensure that water is drained away properly.

• Low refrigerant levels may cause failure of product. • A bad connection may cause water leakage.

Keep level even when installing the product. Use two or more people to lift and transport

the air conditioner.

• To avoid vibration or water leakage. • Avoid personal injury.

■ Installation

90˚

Unplug the unit if strange sounds, odors, or smoke comes from it.

Be cautious that water could not enter the product.

• There is risk of electric shock or fire. • There is risk of fire, electric shock, or product damage.

Safety Precautions

- 9 -

LGE Internal Use Only

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!

• There is risk of fire, electric shock, or damage to the plastic parts of the product.

• There is risk of personal injury.

Do not step on or put anyting on the product. (outdoor units)

Do not insert hands or other objects through the air inlet or outlet while the air conditioner is plugged in.

• There is risk of personal injury and failure of product. • There are sharp and moving parts that could cause

personal injury.

■ Operation

Wax

Safety Precautions

- 10 -

LGE Internal Use Only

Dimensions

Installation plate

D

H

W

W mm 1209

H mm 346

D mm 205

Model

Dimension

24k~38k Btu Series

Indoor Unit

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.

NOTICE

Symbols Used in this Manual

Dimensions

- 11 -

LGE Internal Use Only

MODEL

DIM

W

L7 L6 L8 L9

D

L1

L2

L3

L10L11

L4L5

H

Gas side 3-way valve

Liquid side 2-way valve

W mm 870

H mm 800

D mm 320 L1 mm 370 L2 mm 340 L3 mm 25 L4 mm 775 L5 mm 25 L6 mm 546 L7 mm 162 L8 mm 162 L9 mm 54

L10 mm 79 L11 mm 76.4

24k, 30k, 32k Btu Series

• 24k, 30k, 32k Series

- 12 -

LGE Internal Use Only

L6L7 L8

L9

L4

H

L5

W

D

L1

L3

L2

L10 L11

Gas side 3-way valve

Liquid side 3-way valve

36k, 38k Btu Series

MODEL

DIM

W mm 870

H mm 1038

D mm 320

L1 mm 360

L2 mm 340

L3 mm 25

L4 mm 1035

L5 mm 25

L6 mm 546

L7 mm 160

L8 mm 160

L9 mm 44

L10 mm 75

L11 mm 80

• 36k, 38K Series

Dimensions

Model Name

Item Unit

Cooling Capacity

kW

Heating Capacity

Moisture Removal l/h

Power Source Ø, V, Hz

Air Circulation

Indoor

m3/min

Outdoor

Noise Level

Indoor

dB (A)±3

Outdoor

Input

Cooling

W

Heating

Running

Cooling

A

Current

Heating

E.E.R. Cooling

W/W

C.O.P Heating

Motor Output

Indoor

W

Outdoor

Dimensions

Indoor

mm

(W x H x D)

Outdoor

Net. Weight

Indoor

kg

Outdoor

Refrigerant

(R410A)

g

(R22)

Airflow Direction Control (Up & Down)

Airflow Direction Control (Left & Right)

Chaos Wind

Timer

Self Diagnosis

Remocon Type

Service Valve

Liquid

inch(mm)

Gas

Sleeping Operation

Drain Hose

Connecting Cable

Power Cord

Product Specifications

Table-1

8.5 8.21 8.21 8.21 6.8

9.08 - 8.8 - 7.5

3.8 3.8 3.8 3.8 3.8

1Ø, 220V-240V, 50Hz 1Ø, 220V-240V, 50Hz 1Ø, 220V-240V, 50Hz 1Ø, 220V, 60Hz 1Ø, 220V-240V, 50Hz

20/21.5 20 20/21.5 20 20/21.5

58 58 58 58 58

48 48 48 48 46

58 58 58 58 58

3250 3150 3150 3200 1980

3450 - 3440 - 2350

14.7 14.5 14.5 14.5 9

14.9 - 15.5 - 11

2.62 2.6 2.6 2.57 3.43

2.63 - 2.56 - 3.19

55 55 55 55.8 55

88 88 88 82 88

1209*346*205 1209*346*205 1209*346*205 1209*346*205 1209*346*205

870*800*320 870*800*320 870*800*320 870*800*320 870*800*320

18 18 18 18 18

75 75 75 75 75

2450 - - - 1700

- 2400 2400 2500 -

OOOOO

24Hr On/OFF 24Hr On/OFF 24Hr On/OFF 24Hr On/OFF 24Hr On/OFF

OOOOO

L.C.D wireless L.C.D wireless L.C.D wireless L.C.D wireless L.C.D wireless

1/4"(6.35) 1/4"(6.35) 1/4"(6.35) 1/4"(6.35) 1/4"(6.35)

5/8"(15.88) 5/8"(15.88) 5/8"(15.88) 5/8"(15.88) 5/8"(15.88)

OOOOO

0.75mm2*3, 0.75mm

2

*3 0.75mm2*3, 0.75mm

2

*2 0.75mm2*3, 0.75mm

2

*3 0.75mm2*3, 0.75mm

2

*2 0.75mm2*3, 0.75mm

2

*2

2.5mm2*3 2.5mm2*3 2.5mm2*3 2.5mm2*3 2.5mm2*3

AS-H306D

SERIES

LS-C306D

SERIES

LSNC306DGB0.

AMBAIDA

LS-H306D

SERIES

LS-C302D

SERIES

AS-W246DGH0

- 13 -

LGE Internal Use Only

- 14 -

LGE Internal Use Only

Model Name

Item Unit

Cooling Capacity

kW

Heating Capacity

Moisture Removal l/h

Power Source Ø, V, Hz

Air Circulation

Indoor

m3/min

Outdoor

Noise Level

Indoor

dB (A)±3

Outdoor

Input

Cooling

W

Heating

Running

Cooling

A

Current

Heating

E.E.R. Cooling

W/W

C.O.P Heating

Motor Output

Indoor

W

Outdoor

Dimensions

Indoor

mm

(W x H x D)

Outdoor

Net. Weight

Indoor

kg

Outdoor

Refrigerant

(R410A)

g

(R22)

Airflow Direction Control (Up & Down)

Airflow Direction Control (Left & Right)

Chaos Wind

Timer

Self Diagnosis

Remocon Type

Service Valve

Liquid

inch(mm)

Gas

Sleeping Operation

Drain Hose

Connecting Cable

Power Cord

Table-2

9.97 10.55 10.55 10.55 10.00

- 10.55 - 10.55 10.25

4.2 4.2 4.2 4.2 4.2

1Ø, 220V, 60Hz 1Ø, 220V-240V, 50Hz 1Ø, 220V-240V, 50Hz 1Ø,220V,60Hz 1Ø,220V-240V,50Hz

22 22 22 22 25

64 64 64 64 58

51 51 51 51 51

60 60 60 60 60

3750 4200 4200 3700 3650

- 3900 - 3900 3600

17.5 19 19 17 16

- 18 - 18 16

2.66 2.51 2.51 2.85 2.73

- 2.69 - 2.71 2.85

77.2 76.1 76.1 77.2 76.1

41 41 41 41 41

1209*346*205 1209*346*205 1209*346*205 1209*346*205 1209*346*205

870*1038*320 870*1038*320 870*1038*320 870*1038*320 870*1038*320

19 19 19 19 19

80 80 80 80 80

- - - - 2600

2650 2660 2660 2600 -

OOO OO

24Hr On/OFF 24Hr On/OFF 24Hr On/OFF 24Hr On/Off 24Hr On/OFF

OOO OO

L.C.D wireless L.C.D wireless L.C.D wireless L.C.D wireless L.C.D Wireless

3/8"(9.52) 3/8"(9.52) 3/8"(9.52) 3/8"(9.52) 3/8"(9.52)

5/8"(15.88) 5/8"(15.88) 5/8(15.88) 3/4"(19.05) 3/4"(19.05)

OOO OO

0.75mm2*3, 0.75mm

2

*2 0.75mm2*3, 0.75mm

2

*2 0.75mm2*3, 0.75mm

2

*2 0.75mm2*3, 0.75mm

2

*2 0.75mm*3,0.75mm*3

3.5mm2*3 3.5mm2*3 3.5mm2*3 3.5mm2*3 3.5mm*3

LS-C362D

SERIES

LS-H366D

SERIES

LS-C366D

SERIES

LS-H362D

SERIES

AS-H366DGM1

Product Specifications

- 15 -

LGE Internal Use Only

Model Name

Item Unit

Cooling Capacity

kW

Heating Capacity

Moisture Removal l/h

Power Source Ø, V, Hz

Air Circulation

Indoor

m3/min

Outdoor

Noise Level

Indoor

dB (A)±3

Outdoor

Input

Cooling

W

Heating

Running

Cooling

A

Current

Heating

E.E.R. Cooling

W/W

C.O.P Heating

Motor Output

Indoor

W

Outdoor

Dimensions

Indoor

mm

(W x H x D)

Outdoor

Net. Weight

Indoor

kg

Outdoor

Refrigerant

(R410A)

g

(R22)

Airflow Direction Control (Up & Down)

Airflow Direction Control (Left & Right)

Chaos Wind

Timer

Self Diagnosis

Remocon Type

Service Valve

Liquid

inch(mm)

Gas

Sleeping Operation

Drain Hose

Connecting Cable

Power Cord

Table-3

9.3

10.15

4.2

1_,220V-240V,50Hz

25

58

51

60

3680

3700

16

2.53

2.74

76.1

41

1209*346*205

870*1038*320

19

80

2600

-

O

24Hr On/OFF

O

L.C.D Wireless

3/8"(9.52)

3/4"(19.05)

O

0.75mm*3, 0.75mm*3

3.5mm*3

AS-H366DGM2

Product Specifications

- 16 -

LGE Internal Use Only

Installation

Indoor unit

• Do not have any heat or steam near the unit.

• Select a place where there are no obstacles in front of the

unit.

• Make sure that condensation drainage can be conveniently routed away. Do not install near a doorway.

• Ensure that the space around the left and right of the unit is more than "A". The unit should be installed as high on the wall as possible, allowing a minimum of "B" from ceiling.

• Use a stud finder to locate studs to prevent unnecessary damage to the wall.

Outdoor unit

• If an awning is built over the unit to prevent direct sunlight or rain exposure, make sure that heat radiation from the condenser is not restricted.

• Ensure that the space around the back and sides is more than 10cm. The front of the unit should have more than 70cm of space.

• Do not place animals and plants in the path of the warm air.

• 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 noise from 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 "B"

More than

"A"

More than 2.3m

More than

"A"

• 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.

Grade

Clearance(cm)

AB

24K, 30~38K 30 12

Pipe Size

Capacity

(Btu/h)

GAS LIQUID

Max.

Length

A (m)

Additional

Refrigerant

(g/m)

Max.

Elevation

B (m)

Standard

Length

(m)

30k~32k 5/8"(Ø15.88) 1/4"(Ø6.35) 7.5 15 30 40

36k~38k

5/8"(Ø15.88) 3/8"(Ø9.52) 7.5 15 30 40

3/4"(Ø19.05) 3/8"(Ø9.52) 7.5 15 30 40

If case more than 5m

Outdoor unit

Indoor unit

A

B

Outdoor unit

Indoor unit

A

B

A

Oil trap

Outdoor unit

Indoor unit

B

I

Selection of the Best Location

Piping Length and Elevation

Install the indoor unit on the wall where the height from the floors more than 2.3 meters.

More than 10cm More than 10cm

More than 60cm

More than 70cm

- 17 -

LGE Internal Use Only

Installation

The wall you select should be strong and solid enough to prevent vibration

1. Mount the installation plate on the wall with four 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.

• Drill the piping hole with a ø70mm hole core drill. Drill the piping hole at either the right or the left with the hole slightly slanted to the outdoor side.

• Open the Front Grille.

• Pass Telephone Control Cord Wire through the hole

which the power cord goes through.

• Connect Telephone Control Cord Wire to the phone jack of telephone PCB of Control Box.

• Fix Telephone Control Cord Wire inside Control box so as not to disconnect.

• Close the Front Grille.

How to Fix Installation Plate Drill a Hole in the Wall

Drain hose junction

• Remove the rubber stopple in the desired drain direction.

• Insert drain hose into the handle of drain pan, and join drain hose and connecting hose according to the figure by.

5-7mm

(3/16"~5/16")

Indoor

WALL

Outdoor

Connecting

part

Adhesive

Drain hose

Only the desired direction

Type "A" screw

Installation Plate

Installation plate

Left rear piping Right rear piping

C

D

B

A

Chassis

Hook

ABCD

SD(24k, 30~38k) 120 110 43 43

CHASSIS

(Grade)

Distance (mm)

- 18 -

LGE Internal Use Only

Flaring work and connection of piping

Flaring work

Main cause for refrigerant leakage is due to defect in the flaring work. Carry out correct flaring work using the following procedure.

Cut the pipes and the cable.

• Use the piping kit accessory or pipes purchased locally.

• Measure the distance between the indoor and the outdoor unit.

• Cut the pipes a little longer than the measured distance.

• Cut the cable 1.5m longer than the pipe length.

Check

• Compare the flared work with figure below.

• If flare is noted to be defective, cut off the flared sec-

tion and re-flare it.

• Preparing the indoor unit's piping and drain hose for installation through the wall.

• Remove the plastic tubing retainer(see illustration below) and pull the tubing and drain hose away from chassis.

• Replace the plastic tubing holder in the original position.(Optional)

• Carry out flaring work using flaring tool as shown below.

Burr removal

• Completely remove all burrs from the cut cross section of pipe/tube.

• 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)

Flaring work

• Firmly hold copper pipe in a die in the dimension shown in the table above.

Copper

pipe

90°

Slanted Uneven Rough

Bar

Copper pipe

Clamp handle

Red arrow mark

Cone

Yoke

Handle

Bar

"A"

Inclined

Inside is shiny without scratches

Smooth all round

Even length

all round

Surface

damaged

Cracked Uneven

thickness

= Improper flaring =

Pipe

Reamer

Point down

Flare nut

Copper tube

Drain hose

mm inch mm

Ø6.35 1/4 0~0.5

Ø9.52 3/8 0~0.5

Ø12.7 1/2 0~0.5

Ø15.88 5/8 0~1.0

Ø19.05 3/4 1.0~1.3

Outside diameter A

Connection of piping -- Indoor

When install, make sure that the remaining parts must be removed clearly so as not to damage the piping and drain hose, especially power cord and connecting cable.

- 19 -

LGE Internal Use Only

mm inch kg.m

Ø6.35 1/4 1.8 Ø9.52 3/8 4.2

Ø12.7 1/2 5.5 Ø15.88 5/8 6.6 Ø19.05 3/4 6.6

Outside diameter Torque

Flaring work and connection of piping

Route the indoor tubing and the drain hose in the direction of rear right.

Drain hose

Connecting

cable

Vinyl tape(narrow)

Connection pipe

Connecting cable

Vinyl tape (wide)

Wrap with vinyl tape

Indoor unit pipe

Pipe

Plastic bands

Insulation material

Vinyl tape(narrow)

Adhesive

Drain pipe

Indoor unit drain hose

Wrench

Indoor unit tubing

Open-end wrench (fixed)

Connection pipe

Flare nut

Indoor unit tubing Flare nut Pipes

Connecting pipe

Connecting cable

Tape

Drain hose

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.

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 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 pipings to the indoor unit and drain hose to drain pipe.

• Align the center of the pipes and sufficiently tighten the flare nut by hand.

• Tighten the flare nut with a wrench.

• When extending the drain hose at the indoor unit, install the

drain pipe.

Wrap the insulation material around the connecting portion.

•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.

• Wrap the area which accommodates the rear piping housing section with vinyl tape.

For right rear piping

- 20 -

LGE Internal Use Only

Flaring work and connection of piping

• 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.

Connecting the pipings to the indoor unit and the drain hose to drain pipe.

• Align the center of the pipes and sufficiently tighten the flare nut by hand.

• Tighten the flare nut with a wrench.

• When extending the drain hose at the indoor unit, install the

drain pipe.

Wrap the insulation material around the connecting portion.

• 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.

Route the indoor tubing and the drain hose to the required piping hole position.

Insert the piping, drain hose, and the connecting cable into the piping hole.

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.

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.

Tape the drain hose and the connecting cable.

• Connecting cable

Drain pipe

Connecting cable

Wrap with vinyl tape

Drain hose

Pipe

Vinyl tape(wide)

Indoor unit tubing Flare nut Pipes

Installation plate

Spacer

Indoor unit

8cm

Plastic bands

Insulation material

Vinyl tape

Adhesive

Drain hose

Indoor unit drain hose

(narrow)

Wrench

Indoor unit tubing

Connection pipe

Flare nut

Open-end wrench (fixed)

For left rear piping

mm inch kg.m

Ø6.35 1/4 1.8 Ø9.52 3/8 4.2

Ø12.7 1/2 5.5 Ø15.88 5/8 6.6 Ø19.05 3/4 6.6

Outside diameter Torque

- 21 -

LGE Internal Use Only

Installation Information (For left piping)

• Good case For left piping. Follow the instruction below.

• Press on the upper side of clamp. ( )

Flaring work and connection of piping

• Wrap the area which accommodates the rear piping housing section with vinyl tape.

Indoor unit installation

• Remove the spacer.

• Ensure that the hooks are properly seated on the installa-

tion 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).

• 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.

Set the pipings and the drain hose to the back of the chassis with the tubing holder.

• Hook the edge of tubing holder to tap on chassis and push the bottom of tubing holder to be engaged at the bottom of chassis.

Vinyl tape(narrow)

Connection pipe

Connecting cable

Indoor unit piping

Pipe

Vinyl tape (wide)

Wrap with vinyl tape

Drain hose

Vinyl tape(narrow)

Pipe

Wrap with vinyl tape(wide)

Piping for passage through piping hole

Tubing holder

Drain hose

Connecting

cable

• Unfold the tubing to downward slowly. ( )

• Bend the tubing to the left side of chassis.

- 22 -

LGE Internal Use Only

Flaring work and connection of piping

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.

• Bad case

• Following bending type from right to left could cause

problem of pipe damage.

Connection of the pipes-Outdoor

mm inch kg.m

Ø6.35 1/4 1.8 Ø9.52 3/8 4.2

Ø12.7 1/2 5.5 Ø15.88 5/8 6.6 Ø19.05 3/4 6.6

Outside diameter Torque

Outdoor unit

Gas side piping (Bigger diameter)

Liquid side piping (Smaller diameter)

Torque wrench

- 23 -

LGE Internal Use Only

Connect the cable to the Indoor unit.

Connecting the cable between indoor unit and outdoor unit

Connect the cable to the indoor unit by connecting the wires to the terminals on the control board individually according to the outdoor unit connection.

(Ensure that the color of the wires of the outdoor unit and the terminal No. are the same as those of the indoor unit.)

Air

Conditioner

Main power source

Circuit Breaker

Use a circuit breaker or time delay fuse.

• If a power plug is not to be used, provide a circuit breaker between power source and the unit as shown below.

Connecting the cable between indoor unit and outdoor unit

CAUTION

NORMAL CROSS-SECTIONAL AREA 0.75mm

2

The power cord connected to the outdoor unit should be complied with the following specifications (Rubber insulation, type H05RN-F approved by HAR or SAA).

The connecting cable connected to the indoor and outdoor unit should be complied with the following specifications (Rubber insulation, type H07RN-F approved by HAR or SAA).

20mm

7.5mm

NORMAL CROSS-SECTIONAL AREA 0.75mm

2

20mm

7.5mm

8.5mm

20mm

GN/YL

NORMAL CROSS-SECTIONAL AREA 2.5mm

2

8.5mm

20mm

GN/YL

NORMAL CROSS-SECTIONAL AREA 3.5mm

2

30k, 32k 36k, 38k

4(N)

Terminals on the indoor unit

3(L)

5 67

6

7

4(N)

Terminals on the outdoor unit

Color of Wires

POWER INPUT

Color of Wires

• Cooling & Heating Models

3(L)2(N)1(L)

5

G/Y

BROWN

BLUE

REDWHITE BLACK

G/Y

BROWN

BLUE

2(N)

Terminals on the indoor unit

1(L)

34

6

4(N)

Terminals on the outdoor unit

Color of Wires

POWER INPUT

Color of Wires

• Cooling Only Models

3(L)2(N)1(L)

5

G/Y

BROWN

BLUE

WHITE

RED

WHITE

RED

G/Y

BROWN

BLUE

- 24 -

LGE Internal Use Only

Connecting the cable between indoor unit and outdoor unit

Remove the control cover from the unit by loosening the screw.

Connect the wires to the terminals on the control board individually.

Secure the cable onto the control board with the cord clamp.

Refix the control cover to the original position with the screw.

Use a recognized circuit breaker "A" between the power source and the unit. A disconnecting device to adequately disconnect all supply lines must be fitted.

Over 5mm

Cover control

Connecting cable

The power connecting cable

Terminal block

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) See to 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. (Refer to page 21)

7) Always install an earth leakage circuit breaker in a wet or moist area.

8) The following would be caused by voltage drop.

• Vibration of a magnetic switch, which will damage the contact point, fuse breaking, disturbance of the normal function of the overload.

9) The means for disconnection from a power supply shall be incorporated in the fixed wiring and have an air gap contact separation of at least 3mm in each active(phase) conductors.

Outdoor Unit

Connect the cable to the outdoor unit

24k, 30k, 32k 36k, 38k

30 35

Circuit Breaker

(A)

Grade

- 25 -

LGE Internal Use Only

Checking the drainage and forming the pipings

Checking the drainage Form the piping

To remove the front panel from the indoor unit.

• Set the air direction louvers up-and-down to the position(horizontally) by hand.

• Remove the securing screws that retain the front panel. Pull the lower left and right sides of the grille toward you and lift it off.

Form the piping by wrapping the connecting portion of the indoor unit with insulation material and secure it with two kinds of vinyl tapes.

• If you want to connect an additional drain hose, the end of the drain outlet should be routed above the ground. Secure the drain hose appropriately.

In cases where the outdoor unit is installed below the indoor unit perform the following.

• Tape the piping, drain hose and connecting cable from down to up.

• Secure the tapped piping along the exterior wall using saddle or equivalent.

To check the drainage.

• Pour a glass of water on the evaporator.

• Ensure the water flows through the drain hose of the indoor

unit without any leakage and goes out the drain exit.

In cases where the Outdoor unit is installed above the Indoor unit perform the following.

• 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.

Drain piping

• The drain hose should point downward for easy drain flow.

• Do not make drain piping.

Pull the right and the left side.

Downward slope

Do not raise

Accumulated drain water

Tip of drain hose dipped in water

Air

Waving

Water leakage

Ditch

Less than 50mm gap

Water leakage

Taping

Drain hose

Pipings

Connecting cable

Trap is required to prevent water from entering into electrical parts.

Seal small openings around pipings with a gum type sealer.

Seal a small opening around the pipings with gum type sealer.

Trap

LG AS-H306DGM0 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual