LG LSU240HE, LSU120HE, LSN180HE User Manual

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LG

LG

Room Air Conditioner

SERVICE MANUAL

MODELS: LSN090CE LSU090CE

LSN120CE LSU120CE

LSN180CE LSU180CE

LSN240CE LSU240CE

LSN090HE LSU090HE

LSN120HE LSU120HE

LSN180HE LSU180HE

LSN240HE LSU240HE

CAUTION

BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

ONLY FOR AUTHORIZED SERVICE PERSONNEL.

Air Conditioner Service Manual

 

TABLE OF CONTENTS

 

Safety Precautions..........................................................................................................................................

3

Dimensions......................................................................................................................................................

9

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

9

Indoor Unit..................................................................................................................................................

9

Outdoor Unit.............................................................................................................................................

11

Installation .....................................................................................................................................................

14

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

17

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

18

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

19

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

19

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

19

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

20

Flaring work..............................................................................................................................................

20

Connection of Piping Indoor.....................................................................................................................

21

Connection of the Pipes-Outdoor.............................................................................................................

26

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

27

Connect the Cable....................................................................................................................................

27

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

29

Checking the Drainage.............................................................................................................................

29

Form the Piping........................................................................................................................................

30

AIR PURGING ................................................................................................................................................

31

Air purging................................................................................................................................................

31

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

31

Test Running .................................................................................................................................................

34

Operation .......................................................................................................................................................

35

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

35

Display Function ......................................................................................................................................

39

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

39

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

40

Disassembly ..................................................................................................................................................

41

Indoor Unit................................................................................................................................................

41

Troubleshooting Guide .................................................................................................................................

44

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

44

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

45

Cycle Parts...............................................................................................................................................

51

Electronic Parts ........................................................................................................................................

52

Schematic Diagram.......................................................................................................................................

62

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

62

Wiring Diagram.........................................................................................................................................

65

Components Location ..............................................................................................................................

67

Product Specifications .................................................................................................................................

72

Exploded View...............................................................................................................................................

74

Replacement Parts List ................................................................................................................................

78

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.

There is risk of fire or electric shock.

Install the panel and the cover of control box securely.

For electrical work, contact the dealer, seller, a qualified electrician, or an Authorized Service Center.

There is risk of fire or electric shock.

Do not modify or extend the power cord.

• There is risk of fire or electric

• There is risk of fire or electric

shock.

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

For installation, always contact

and installing the product.

the dealer or an Authorized

 

Service Center.

Do not install the product on a defective installation stand.

Shape edges could cause injury. Be especially careful of the sharp edges.

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

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

Be sure the installation area does not deteriorate with age.

Install the indoor unit on the wall where the height from the floors more then 8ft(2.4m)

Do not handle the pipe by yourself(customer)

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

• There are sharp moving parts

• High-Pressure refrigent may

that could cause personal injury.

cause personal injury.

8ft(2.4m)

Operation

Use a dedicated outlet for this appliance.

There is risk of fire or electric shock.

Grasp the plug to remove the

Do not allow water to run into

cord from the outlet. Do not

electric part.

touch it with wet hands.

 

• There is risk of fire or electric

• There is risk of fire, failure of the

shock.

product, and/or electric shock.

4 Room Air Conditioner

LG LSU240HE, LSU120HE, LSN180HE User Manual

Safety Precautions

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

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

Do not let the air conditioner run for a long time when the humidity is very high and a door or a window is left open.

Moisture may condense and wet or damage furnishings.

Do not store of use flammable gas or combustibles near the air conditioner.

There is risk of fire or product failure.

Do not use the product in a tightly closed space for a long time.

Oxygen deficiency could occur.

Some ventilation by opeing window is necessary for the fresh air.

Stop operation and close any window in storm or hurricane. before the hurricane arrives.

There is risk of property damage, failure of product, or electric shock.

When flammable gas leaks, turn off the gas and open a window for ventilation before turning the product on. Do not use the telephone or turn switches on or off.

• There is risk of explosion or fire.

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.

Wax

Thinner

 

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

There is risk of fireproduct failure and/or electric shock.

When the product is soaked (flooded or submerged), contact an Authorized Service Center.

• There is risk of electrical shock.

Service Manual 5

Safety Precautions

Ventilate the product from time to time when operating it together with a stove, etc.

Unplug the appliance before performing cleaning or maintenance.

When the product is not be used for a long time disconnect the power supply plug or turn off the breaker.

There is risk of fire or electrical shock.

• There is risk of electric shock.

There is risk of product damage or failure, or unintended operation.

Take care to ensure that nobody could step on or fall onto the outdoor unit.

There could result in personal injury and product damage.

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

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

There are sharp and moving parts that could cause personal injury.

Keep level even when installing the product.

• A bad connection may cause

• To avoid vibration or water leak-

water leakage.

age.

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

Low refrigerant levels may cause product failure.

Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods.

It may cause a problem for your neighbors.

90˚

6 Room Air Conditioner

Safety Precautions

Use two or more people to lift and transport the air conditioner

• Avoid personal injury.

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.

There is risk of damage or loss of property.

Do not touch the metal parts of the product when removing the air filter. They are very sharp!

• There is risk of personal injury.

Do not install the product where it will be exposed to sea wind (salt spray) directly.

It may cause corrosion in the product. Corrosion, particularly on the condenser and evaporator fins, could cause product malfunction or inefficient operation.

Do not block the inlet or outlet of air flow.

• It may cause product failure.

Do not step on or put anything on the product. (outdoor unit)

There is risk of personal injury and failure of product.

Do not direct airflow at room occupants.

• 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.

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

Service Manual 7

Dimensions

Do not drink the water drained from the unit.

Use a firm stool or ladder when cleaning or maintaining the air conditioner.

Replace all the batteries in the remote.

It is not sanitary and could cause serious health issues.

Be careful and avoid personal injury.

• 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.

8 Room Air Conditioner

Dimensions

Dimensions

SymbolsUsedin 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.

IndoorUnit

H

D

W

Installation plate

 

Model

9

Btu Series

9 Btu Series

12 Btu Series

 

 

 

 

Dimension

 

 

(C/O)

(H/P)

 

 

 

 

 

 

 

 

 

 

 

W

mm(inch)

 

840(33.1)

894(35.2)

894(35.2)

 

H

mm(inch)

 

270(10.6)

295(11.6)

295(11.6)

 

D

mm(inch)

 

153(6.0)

165(6.5)

165(6.5)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Service Manual 9

Dimensions

H

D

W

Installation plate

 

Model

18 Btu Series

24 Btu Series

Dimension

 

 

 

 

W

mm(inch)

1090(42.9)

1090(42.9)

H

mm(inch)

300(11.8)

300(11.8)

D

mm(inch)

178(7.0)

178(7.0)

 

 

 

 

10 Room Air Conditioner

Dimensions

OutdoorUnit

1. 9k, 12k

 

W

L2

L1

D

 

 

L3

 

H

L4

Gas side (3-way valve)

L5

Liquid side (2-way valve)

 

MODEL

9k, 12k

DIM

unit

 

W

mm(inch)

770(30.3)

H

mm(inch)

540(21.3)

D

mm(inch)

245(9.6)

L1

mm(inch)

287(11.3)

L2

mm(inch)

64(2.5)

L3

mm(inch)

518(20.4)

L4

mm(inch)

10(0.4)

L5

mm(inch)

100(3.9)

 

 

 

Service Manual 11

Dimensions

2. 18k, 24k

W

D

L1

L2

L3

H

 

 

 

 

 

 

 

 

L9

 

 

 

 

L10

L4

L6

L5

L7

L8

 

 

 

MODEL

18k, 24k

 

 

DIM

 

 

 

 

 

 

 

 

 

 

 

 

W

mm(inch)

870(34.3)

 

 

 

 

 

 

 

H

mm(inch)

655(25.8)

 

 

 

 

 

 

 

D

mm(inch)

320(12.6)

 

 

 

 

 

 

 

L1

mm(inch)

370(14.6)

 

 

 

 

 

 

 

L2

mm(inch)

25(1.0)

 

 

 

 

 

 

 

L3

mm(inch)

630(24.8)

 

 

 

 

 

 

 

L4

mm(inch)

25(1.0)

 

 

 

 

 

 

 

L5

mm(inch)

546(21.5)

 

 

 

 

 

 

 

L6

mm(inch)

162(6.4)

 

 

 

 

 

 

 

L7

mm(inch)

162(6.4)

 

 

 

 

 

 

 

L8

mm(inch)

54(2.1)

 

 

 

 

 

 

 

L9

mm(inch)

74.5(2.9)

 

 

 

 

 

 

 

L10

mm(inch)

79(3.1)

 

 

 

 

 

 

 

 

 

 

 

12 Room Air Conditioner

Introduction

Introduction

SymbolsUsedIn ThisManual

This symbol alerts you to the risk of electric shock.

This symbol alerts you to hazards that may cause harm to the air conditioner.

NOTICE This symbol indicates special notes.

Features

Air Inlet

Air Filter

Front Panel

Signal Receptor

 

Air Intake Vents

 

 

 

Connecting

Connecting

 

Wires

Wires

 

 

Air Intake

 

 

Vents

 

 

Piping

 

Piping

 

 

Air Outlet

 

Drain Hose

Vents

 

 

 

Drain Hose

 

 

 

Air Outlet Vents

Base Plate

 

 

Base Plate

 

 

Service Manual 13

Installation

Installation

Read carefully, and then follow step by step.

Installation Parts

Installation plate

Type "A" screw and plastic anchor

Type "B" screw

Remote Control Holder

InstallationTools

Figure

Name

Figure

Name

 

Screw driver

 

Ohmmeter

Electric Drill

Hexagonal wrench

Measuring Tape, Knife

Ammeter

Hole Core Drill

Gas Leak Detector

Spanner

Thermometer,

Level

 

Torque wrench

Flaring Tool Set

14 Room Air Conditioner

Installation

InstallationMap

NOTICE

Installation parts you should purchase.

 

Installation Plate

 

Sleeve

 

Bushing-Sleeve

 

Putty(Gum Type Sealer)

 

Bend the pipe as closely

 

on the wall as possible,

 

but be careful that it

Air Discarge

doesn't break.

Vertical Air deflector

 

Operation Indication Lamps/

Vinyl tape(Wide)

Signal Receptor

 

• Apply after carrying out a

Forced Operation Button

drainage test.

 

• To carry out the drainage

Saddle

test, remove the air filters

and pour water into the heat

 

exchanger.

Air Inlet Vents

Gas side piping

Liquid side piping

 

Air Outlet Vents

Additional drain pipe

 

Drain Hose

 

Connecting cable

 

Base Plate

NOTE: refrigerant line wall thickness must be at least 0.8 mm (0.031 inch)

Service Manual 15

ConfirmTheRefrigerant

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

120

 

 

 

 

 

 

100

 

 

 

 

100

 

93

89

 

 

 

 

 

84

 

 

 

 

 

 

80

 

 

 

 

76

 

 

 

 

 

60

 

 

 

 

 

40

 

 

 

 

 

20

 

 

 

 

 

0

 

 

 

 

 

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.

 

Boiling Pt.(°C)

Vapor pressure(25°C)(kg f/cnf)

Vapor density(25°C)(kg/m2)

 

 

 

 

 

 

 

 

R-410A

-51.4

15.9

64

 

 

 

 

R-22

-40.8

9.6

44.4

 

 

 

 

Do not handle the pipe by yourself (customer) High-pressure refrigerant may cause personal injury. - manifold gauge ,charging and any piping tools must be dedicated to R-410A systems.

16 Room Air Conditioner

SelectTheBest 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 space around the left and right of the unit is more than 30cm(11.8in). The unit should be installed as high on the wall as possible, allowing a minimum of 12cm(4.7in) from ceiling.

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

More than 30cm(11.8in)

More than 30cm(11.8in)

More than

Install the indoor unit on the wall where the height from the floors more than 2.3meters(7.6ft). A minimum pipe run of 7.5meters(24.6ft) is required to minimize vibration and excessive noise.

Outdoor unit

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

2.Ensure that the space around the back and sides is more than 10cm(3.9in). The front of the unit should have more than 70cm(27.6in) of space.

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.

5.Select a place so that the warm air and noise from the air conditioner do not disturb neighbors.

More than 60cm(23.6in)

More than

More than

10cm(3.9in)

10cm(3.9in)

More than

More than

70cm(27.6in)

60cm(23.6in)

 

Rooftop Installations

If the outdoor unit is installed on a roof structure, be sure to level the unit. Ensure the roof structure and anchoring method are adequate for the unit location. Consult local codes regarding rooftop mounting.

If the outdoor unit is installed on roof structures or walls, this may result in excessive noise and vibration, and may be also classed as non serviceable installation.

Service Manual 17

PipingLengthAndElevation

Capacity

Pipe Size

Standard

Max.

Max.

Additional Refrigerant

 

 

Length

Elevation

length

(Btu/h)

Suction

Evap

g/m(oz/ft)

m(ft)

B m(ft)

A m(ft)

 

 

 

 

 

 

 

 

9k(C/O)

3/8"

1/4"

7.5(25)

7.5(25)

15(49)

20(0.22)

9k(H/P), 12k

1/2"

1/4"

7.5(25)

7.5(25)

15(49)

20(0.22)

 

 

 

 

 

 

 

18k(C/O)

1/2"

1/4"

7.5(25)

15(49)

30(98)

20(0.22)

 

 

 

 

 

 

 

18k(H/P), 24k

5/8"

1/4"

7.5(25)

15(49)

30(98)

30(0.32)

 

 

 

 

 

 

 

Outdoor unit

 

A

Indoor unit

B

 

Outdoor unit

Oil trap

Indoor

B

In case more than 5m(16.4ft)

Capacity is based on standard length and maximum allowance length is on the basis of reliability.

Oil trap should be installed every 5~7meters (16.4~23.0ft).

18 Room Air Conditioner

How To Mount Installation Plate

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.

Chassis

Hook

Type “A”

2.Measure the wall and mark the centerline. It is also important to use caution concerning the location of the installation plate-routing of the wiring to power outlets is through the walls typically. Drilling the hole through the wall for piping connections must be done safely.

CHASSIS

 

Distance (mm)

 

 

 

 

(Grade)

A

B

C

D

 

 

 

 

 

 

 

S4

50

105

59

105

 

 

 

SE

65

110

85

110

 

Installation plate

 

S5

95

122

235

122

D

B

 

 

 

 

 

 

Ø70mm C

 

A Ø70mm

 

 

 

 

 

Left rear piping

 

Right rear piping

DrillaHoleIn The Wall

Drill the piping hole with a ø 70mm(2.76in) hole core drill. Drill the piping hole at either the right or the left with the hole slightly slanted to the outdoor side.

 

WALL

Indoor

Outdoor

5-7mm

(0.2~0.3")

Service Manual 19

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(59.1in) longer than the pipe length.

Copper

 

Slanted Uneven Rough

pipe

90°

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.

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.

Outside diameter

 

A

 

 

 

 

 

mm

inch

mm

 

inch

Ø6.35

1/4

0~0.5

 

0~0.020

Ø9.52

3/8

0~0.5

 

0~0.020

Ø12.7

1/2

0~0.5

 

0~0.020

Ø15.88

5/8

0~1.0

 

0~0.039

Pipe

Reamer

Point down

Flare nut

Copper tube

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

 

"A"

Handle

Bar

Bar

 

 

 

Yoke

 

 

Cone

Copper pipe

Clamp handle

Red arrow mark

20 Room Air Conditioner

ConnectingThePiping

Indoor

1.Prepare the indoor unit's piping and drain hose for installation through the wall.

2.Remove the plastic tubing retainer(see the illus-

tration by) and pull the tubing and drain hose away from chassis.

3.Replace only the plastic tubing holder 1, not the holder 2 in the original position.

For left rear piping

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

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.

1

2

 

Connecting

 

cable

 

Drain pipe

NOTICE

If the drain hose is routed inside the room, insulate the hose with an insulation material* so that dripping from "sweating"(condensation) will not damage furniture or floors.

*Foamed polyethylene or equivalent is recommended.

Indoor unit installation

Hook the indoor unit onto the upper portion of the installation plate.(Engage the three hooks of the rear top and rear lower of the indoor unit with the upper edge and lower edge of the installation plate.) Ensure that the hooks are properly seated on the installation plate by moving it left and right.

Indoor unit

Spacer

Installation plate 8cm

Service Manual 21

Plastic bands

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

Put a couple drops of refrigerant oil on the face of the flare before assembling taking care not to add any contaminants.

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

Indoor unit tubing

Flare nut Pipings

• Tighten the flare nut with a wrench.

Indoor unit tubing

Connection pipe

 

Torque wrench

 

 

Flare nut

 

 

Spanner (fixed)

 

 

Outside diameter

Torque

mm

inch

 

Ø6.35

1/4

1.8

Ø9.52

3/8

4.2

Ø12.7

1/2

5.5

Ø15.88

5/8

6.6

Mount the clamp on the boss with a type "B" screw.(SE-H/P: 9k, 12k C/O: 12k)

Type "B" screw

Drain hose

Clamp

 

Boss

 

When extending the drain hose at the indoor unit, install the drain pipe.

Drain pipe

Indoor unit drain hose

Adhesive Vinyl tape(narrow)

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.

Insulation material

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

Connection

Indoor

unit pipe

pipe

 

Vinyl tape

Wrap with vinyl tape

(wide)

 

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.

Wrap with vinyl tape

Pipe

Vinyl tape(wide)

Drain hose

For right rear piping

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

Drain hose

22 Room Air Conditioner

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.

Tape the drain hose and the connecting cable.

• Connecting

Tape

Connecting pipe

Drain hose

Connecting cable

Indoor unit installation

Hook the indoor unit onto the upper portion of the installation plate.(Engage the three hooks of the rear top and rear lower of the indoor unit with the upper edge and lower edge of the installation plate.) Ensure that the hooks are properly seated on the installation plate by moving it left and right.

Connecting

cable

Drain hose

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

Put a couple drops of refrigerant oil on the face of the flare before assembling taking care not to add any contaminants

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

 

 

Spanner (fixed)

 

 

Flare nut

Torque wrench

 

Connection pipe

 

 

Indoor unit tubing

 

 

Outside diameter

Torque

Ø6.35

1/4

1.8

Ø9.52

3/8

4.2

Ø12.7

1/2

5.5

Ø15.88

5/8

6.6

Mount the clamp on the boss with a type "B" screw.(SE-H/P: 9k, 12k C/O: 12k)

Type "B" screw

Drain hose

Clamp

 

Boss

 

When extending the drain hose at the indoor unit, install the drain pipe.

Drain hose

Indoor unit drain hose

Adhesive Vinyl tape (narrow)

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.

Plastic bands Insulation material

Indoor unit tubing

Flare nut Pipings

• Tighten the flare nut with a wrench.

Service Manual 23

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

Connection

Indoor

unit piping

pipe

 

Vinyl tape

Wrap with vinyl tape

(wide)

 

Pipe

Vinyl tape(narrow)

Connecting cable

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.

Pipe

Drain hose

Vinyl tape(narrow)

Wrap with

vinyl tape(wide)

Reroute the pipings and the drain hose across the back of the chassis.

Piping passage piping hole

Reroute the pipings and the drain hose across the back of the chassis.

Connecting

cable

Drain hose

24 Room Air Conditioner

Installation Information. For left piping. Follow the instruction below.

Correct case

• Press on the upper side of clamp and unfold the tubing to downward slowly.

Incorrect case

• Following bending type from right to left may cause damage to the tubing.

Service Manual 25

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