Samsung AJ068TXJ3KH/EA FJM NASA Outdoor Unit, 3 Ports, 6.8kW User Manual

Air conditioner

Installation manual

AJ***TXJ*KH

• Thank you for purchasing this Samsung air conditioner.

• Before operating this unit, please read this manual carefully and retain it for future

reference.

DB68-09117A-07

English

Contents

Safety Information 3

General information 4

Installing the unit 5

Power supply line, fuse or circuit breaker 5

Installation Procedure 6

Step 1 Choosing the installation location 6

Step 2 Checking and preparing accessories and tools 8

Step 3 Fixing the outdoor unit in place 8

Step 4 Connecting the power cables, communication cable, and controllers 9

Step 5 Optional: Extending the power cable 14

Step 6 Connecting the refrigerant pipe 16

Step 7 Optional: Cutting and flaring the pipes 18

Step 8 Connecting refrigerant pipes and vacuuming 18

Step 9 Performing the gas leak test 20

Step 10 Adding refrigerant (R-410A) 20

Step 11 Connecting the drain hose to the outdoor unit 22

Step 12 Checking the earthing 22

Step 13 Setting an indoor unit address and installation option 23

Step 14 Cool and Heat modes operation test 31

Step 15 Optional: Setting to Cool or Heat only mode 31

Step 16 Optional: Power improvement mode 32

Extra procedures 33

Pumping down refrigerant 33

Relocating the indoor and outdoor units 33

Using the stop valve 34

Appendix 35

Troubleshooting 35

Correct Disposal of This Product

(Waste Electrical & Electronic Equipment)

(Applicable in countries with separate collection systems)

This marking on the product, accessories or literature indicates that the product and its electronic accessories

(e.g. charger, headset, USB cable) should not be disposed of with other household waste at the end of their

working life. To prevent possible harm to the environment or human health from uncontrolled waste disposal,

please separate these items from other types of waste and recycle them responsibly to promote the sustainable

reuse of material resources.

Household users should contact either the retailer where they purchased this product, or their local

government office, for details of where and how they can take these items for environmentally safe recycling.

Business users should contact their supplier and check the terms and conditions of the purchase contract. This

product and its electronic accessories should not be mixed with other commercial wastes for disposal.

English

Safety Information

WARNING: Read This Manual

• Read and follow all safety information and instructions before installation, use, or maintenance of this appliance.

Incorrect installation, use, or maintenance of this appliance can result in death, serious injury, or property damage.

Keep these instructions with this appliance. This manual is subject to change. For the latest version,

visit www.samsung.com.

Notices and notes

To make you aware of safety messages and highlighted information, we use the following notices and notes throughout

this manual:

WARNING

Hazards or unsafe practices that may result in severe personal injury or death.

CAUTION

Hazards or unsafe practices that may result in minor personal injury or property damage.

IMPORTANT

Information of special interest

NOTE

Supplementary information that may be useful

WARNING

The installation and testing of this appliance must be performed by a qualified technician.

• The instructions in this manual are not intended as a substitute for proper training or adequate experience in the

safe installation of the appliance.

Always install the air conditioner in compliance with current local, state, and federal safety standards.

Safety Information

English

Safety Information

General information

WARNING

• Carefully read the content of this manual before

installing the air conditioner and store the manual in

a safe place in order to be able to use it as reference

after installation.

• For maximum safety, installers should always carefully

read the following warnings.

• Store the operation and installation manual in a safe

location and remember to hand it over to the new

owner if the air conditioner is sold or transferred.

• This manual explains how to install an indoor unit with

a split system with two SAMSUNG units. The use of

other types of units with different control systems may

damage the units and invalidate the warranty. The

manufacturer shall not be responsible for damages

arising from the use of non compliant units.

• The manufacturer shall not be responsible for damage

originating from unauthorized changes or the

improper connection of electric and requirements set

forth in the “Operating limits” table, included in the

manual, shall immediately invalidate the warranty.

• The air conditioner should be used only for the

applications for which it has been designed: the indoor

unit is not suitable to be installed in areas used for

laundry.

• Do not use the units if damaged. If problems occur,

switch the unit off and disconnect it from the power

supply.

• In order to prevent electric shocks, fires or injuries,

always stop the unit, disable the protection switch

and contact SAMSUNG’s technical support if the unit

produces smoke, if the power cable is hot or damaged

or if the unit is very noisy.

• Always remember to inspect the unit, electric

connections, refrigerant tubes and protections

regularly. These operations should be performed by

qualified personnel only.

• The unit contains moving parts, which should always

be kept out of the reach of children.

• Do not attempt to repair, move, alter or reinstall the

unit. If performed by unauthorized personnel, these

operations may cause electric shocks or fires.

• Do not place containers with liquids or other objects

on the unit.

• All the materials used for the manufacture and

packaging of the air conditioner are recyclable.

• The packing material and exhaust batteries of the

remote controller(optional) must be disposed of in

accordance with current laws.

• The air conditioner contains a refrigerant that has

to be disposed of as special waste. At the end of its

life cycle, the air conditioner must be disposed of in

authorized centres or returned to the retailer so that it

can be disposed of correctly and safely.

• Wear protective equipment (such as safety gloves,

goggles, and headgear) during installation and

maintenance works. Installation/repair technicians

may be injured if protective equipment is not properly

equipped.

• This appliance is not intended for use by persons

(including children) with reduced physical, sensory

or mental capabilities, or lack of experience and

knowledge, unless they have been given supervision

or instruction concerning use of the appliance by a

person responsible for their safety. Children should be

supervised to ensure that they do not play with the

appliance.

Safety Information

English

Safety Information

Installing the unit

WARNING

IMPORTANT: When installing the unit, always remember

to connect first the refrigerant tubes, then the electrical

lines.

• Upon receipt, inspect the product to verify that

it has not been damaged during transport. If the

product appears damaged, DO NOT INSTALL it and

immediately report the damage to the carrier or

retailer (if the installer or the authorized technician has

collected the material from the retailer.)

• After completing the installation, always carry out a

functional test and provide the instructions on how to

operate the air conditioner to the user.

• Do not use the air conditioner in environments with

hazardous substances or close to equipment that

release free flames to avoid the occurrence of fires,

explosions or injuries.

• Our units should be installed in compliance with the

spaces shown in the installation manual, to ensure

accessibility from both sides and allow repairs or

maintenance operations to be carried out. The

unit’s components should be accessible and easy to

disassemble without endangering people and objects.

• For this reason, when provisions of the installation

manual are not complied with, the cost required to

access and repair the units (in SAFETY CONDITIONS,

as set out in prevailing regulations) with harnesses,

ladders, scaffolding or any other elevation system will

NOT be considered part of the warranty and will be

charged to the end customer.

Power supply line, fuse or circuit breaker

WARNING

• Always make sure that the power supply is compliant

with current safety standards. Always install the air

conditioner in compliance with current local safety

standards.

• Always verify that a suitable earthing connection is

available.

• Verify that the voltage and frequency of the power

supply comply with the specifications and that the

installed power is sufficient to ensure the operation of

any other domestic appliance connected to the same

electric lines.

• Always verify that the cut-off and protection switches

are suitably dimensioned.

• Verify that the air conditioner is connected to the

power supply in accordance with the instructions

provided in the wiring diagram included in the manual.

• Always verify that electric connections (cable entry,

section of leads, protections…) are compliant with

the electric specifications and with the instructions

provided in the wiring scheme. Always verify that all

connections comply with the standards applicable to

the installation of air conditioners.

• Devices disconnected from the power supply should

be completely disconnected in the condition of

overvoltage category.

• Be sure not to perform power cable modification,

extension wiring, and multiple wire connection.

‐ It may cause electric shock or fire due to poor

connection, poor insulation, or current limit

override.

‐ When extension wiring is required due to power

line damage, refer to "Step 5 Optional: Extending

the power cable" in the installation manual.

English

Installation Procedure

Step 1 Choosing the installation location

Installation location requirements

• Do not place the outdoor unit on its side or upside

down. Failing to do so may cause the compressor

lubrication oil to run into the cooling circuit and lead

to serious damage to the unit..

• Install the unit in a well-ventilated location away from

direct sunlight or strong winds.

• Install the unit in a location that would not obstruct

any passageways or thoroughfares.

• Install the unit in a location that would not inconvenience

or disturb your neighbors, as they could be affected by

the noise or the airflow coming from the unit.

• Install the unit in a location where the pipes and the

cables can be easily connected to the indoor unit.

• Install the unit on a flat, stable surface that can

withstand the weight of the unit. Otherwise, the unit

can generate noise and vibration during operation.

• Install the unit so that the air flow is directed towards

the open area.

• Maintain sufficient clearance around the outdoor unit,

especially from a radio, computer, stereo system, etc.

Fuse

Control

1 m or more

1.5 m or more

300 mm

Stereo

Computer

etc

Outdoor Unit

200 mm

Air Guide Duct (This product is not provided by Samsung)

Indoor Unit

• Install the unit at a height where its base can be firmly

fixed in place.

• Make sure that the water dripping from the drain hose

runs away correctly and safely.

CAUTION

• You have just purchased a system air conditioner and it

has been installed by your installation specialist.

• This device must be installed according to the national

electrical rules.

• If your outdoor unit exceeds a net weight of 60 kg, do

not install it on a suspended wall, but stand it on a

floor.

• When installing the outdoor unit at the seaside, make

sure that it is not directly exposed to sea breeze. If

you cannot find an adequate place free from direct

sea breeze, construct a protection wall or a protective

fence.

‐ Install the outdoor unit in a place (such as near

buildings etc.) where it can be prevented from sea

breeze. Failure to do so may cause a damage to the

outdoor unit.

Sea breeze Sea breeze

Sea

Outdoor Unit Outdoor Unit

• If you cannot avoid installing the outdoor unit at the

seaside, construct a protection wall around to block

the sea breeze.

• Construct a protection wall with a solid material such

as concrete to block the sea breeze. Make sure that the

height and the width of the wall are 1.5 times larger

than the size of the outdoor unit. Also, secure a space

larger than 700 mm between the protection wall and

the outdoor unit for exhausted air to ventilate.

Protection wall

Outdoor Unit

Sea breeze

Sea

CAUTION

• Depending on the condition of the power supply,

unstable power or voltage may cause malfunction of

parts or control system (example: on a boat or places

using power supplied from electric generator, etc.).

• Install the unit in a place where water can drain

smoothly.

English

Installation Procedure

• If you have any difficulty finding installation location

as prescribed above, contact your manufacturer for

details.

• Consider that the salinity particles clinging to the

external panels should be sufficiently washed out. Be

sure to clean sea water and dust from the outdoor unit

heat exchanger and apply a corrosion inhibitor on it at

least once a year.

• Because the residual water at the bottom of the

outdoor unit significantly promotes corrosion, make

sure that the slope does not disturb drainage.

‐ Keep the floor level so that rain does not accumulate.

‐ Be careful not to block the drain hole due to foreign

substance.

• Check the condition of the product periodically.

– Check the installation site every 3 months and

perform anti-corrosion treatment such as R-Pro

supplied by SAMSUNG (Code : MOK-220SA) or

commercial water repellent grease and wax, etc.,

based on the product condition.

– When the product is to be shut down for a long

period of time, such as off-peak hours, take

appropriate measures like covering the product.

• If the product installed within 500 m of seashore,

special anti-corrosion treatment is required.

※ Please contact your local SAMSUNG representative

for further details.

Minimum clearances for the outdoor unit

When installing 1 outdoor unit

(Unit: mm)

300 or more

1500 or more

300 or

600 or

300 or

2000 or

1500 or

600 or

300

or more

1500

or more

300 or

When installing more than 1 outdoor unit

(Unit: mm)

1500

or more

600

or more

3000

or more

3000

or more

300

or more

600

or more

600

or more

1500 or

300

or more

1500 or more

600

or more

600

or more

300

or more

600

or more

600

or more

600

or more

300

or more

300 or more

500 or more 500 or more

CAUTION

• The outdoor unit must be installed according to the

specified distances in order to permit accessibility

from each side, to guarantee correct operation,

maintenance, and repair of the unit.

The components of the outdoor unit must be

reachable and removable under safe conditions for

people and the unit.

Installation Procedure

English

Installation Procedure

Step 2 Checking and preparing

accessories and tools

3-wire

Power Cable (option)

2-wire

Assembly Cable (option)

Drain Plug Energy Label

Rubber Leg Installation Manual

Flare Bolt

(Nut 12.70mm;Bolt 9.52mm)

Flare Nuts, 9.52mm

outer pipe diameter

Drain Cap

(**068/080******)

Flare Nuts, 15.88mm

outer pipe diameter

(**080******)

Flare Bolt

(Nut 12.70mm; Bolt

15.88mm)

(**080******)

NOTE

• Attach Energy Label to the outdoor unit properly when

installing.

• Wire assembly cables are optional. If they are not

supplied, use standard cables.

• The drain plug and the rubber legs are included only

when the air conditioner is supplied without assembly

pipes.

• If these accessories are supplied, they are in the

accessory package or outdoor unit package.

Step 3 Fixing the outdoor unit in place

Install the outdoor unit on a rigid and stable base to

prevent disturbance from any noise caused by vibration.

When installing the unit on tall stands or in a location

exposed to strong winds, fix the unit securely to the

ground or structure.

1 Position the outdoor unit so that the air flow is directed

towards the outside, as indicated by the arrows on the

top of the unit.

2 Attach the outdoor unit to the appropriate support

using anchor bolts.

• The ground wire for the telephone line cannot be

used to ground the air conditioner.

3 If the outdoor unit is exposed to strong winds, install

shield plates around the outdoor unit, so that the fan

can operate correctly.

NOTE

• Certainly fix up its rubber leg in order to prevent its

vibration and noise.

(Unit : mm)

Model X Y

AJ040/050TXJ2KH 602 310

AJ068TXJ3KH

AJ080TXJ4KH

660 340

CAUTION

• Install a drain outlet at the lowest end around the base

for outdoor unit drainage

• When installing the outdoor unit on the roof,

waterproof the unit and check the ceiling strength.

Rubber leg

English

Installation Procedure

Optional: Fixing the outdoor unit to a wall with

a rack

Soft rubber designed to cut off vibration from

rack to wall. (not supplied with product)

Designed to cut off residual vibration from

outdoor unit to rack. (not supplied with product)

Anchor bolt

Base surface

20 mm

• Install a proper grommet in order to reduce noise

and residual vibration transferred by the outdoor unit

towards the wall.

CAUTION

• When installing an air guide duct, be sure to check the

following:

‐ The screws do not damage the copper pipe.

‐ The air guide duct is fixed firmly on the guard fan.

Step 4 Connecting the power cables,

communication cable, and controllers

You must connect the following three electrical cables to

the outdoor unit:

• The main power cable between the auxiliary circuit

breaker and the outdoor unit.

• The outdoor-to-indoor power cable between the

outdoor unit and the indoor unit.

• The communication cable between the outdoor unit

and the indoor unit.

CAUTION

• During installation, make first the refrigerant

connections and then the electrical connections. If the

unit is being removed,, first disconnect the electrical

cables and then the refrigerant connections.

• Connect the air conditioner to the earthing system

before making the electrical connections.

NOTE

• Especially, if your outdoor unit is the one designed for

Russian and European markets, consult the supply

authority, if necessary, to estimate and reduce the

supply system impedance before installation.

Installation Procedure

English

Installation Procedure

Conncting the cables to the outdoor unit

AJ068TXJ3KH

L N

1(L) 2(N) F1 F21(L) 2(N) F1 F2

1(L) 2(N) F1 F2

F1 F2

1 2

B CB C

1 2

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

F1 F2 F1 F2

A-unit

B-unit C-unit

Indoor unit

Assembly cable

Earth

terminal

Outdoor unit

Main Power

Supply cable

Power cable to indoor units

Communication cable

to indoor units

Cable Type : A

Cable Type : B

Cable Type : C

Earth

terminal

Earth

terminal

Earth

terminal

Earth

terminal

Earth

terminal

Earth

terminal

AJ040/050TXJ2KH

1(L) 2(N) F1 F2 1(L) 2(N) F1 F2

L N

F1 F2

1 2

B CB C

L N

F1 F2

Indoor unit

Assembly cable

Earth

terminal

Outdoor unit

Main Power

Supply cable

Power cable to indoor units

Communication cable

to indoor units

Cable Type : A

Cable Type : B

Cable Type : C

Earth

terminal

Earth

terminal

Earth

terminal

Earth

terminal

A-unit B-unit

English

Installation Procedure

AJ080TXJ4KH

F1 F2 F1 F2

L N

1(L) 2(N) F1 F2 1(L) 2(N) F1 1(L) 2(N) F1 1(L) 2(N) F1F2

1 2

F1 F2 F1 F2

F1 F2

1 2

C B CB C B C

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

F1 F2 F1 F2

A-unit B-unit C-unit

D-unit

Indoor unit

Assembly cable

Earth

terminal

Earth

terminal

Outdoor unit

Main Power

Supply cable

Power cable to indoor units

Communication cable

to indoor units

Cable Type : A

Cable Type : B

Cable Type : C

Earth

terminal

Earth

terminal

Earth

terminal

Earth

terminal

Earth

terminal

Earth

terminal

Earth

terminal

Specification for circuit breaker and power supply cord

• Power supply cord is not supplied with air conditioner.

• Select the power supply cord in accordance with relevant local and national regulations.

• Wire size must comply with the applicable local and national code.

• Specifications for local wiring power supply cord and branch wiring are in compliance with local cord.

NOTE

1. Power Supply cords of parts of appliances for outdoor use shall not be lighter than polychloroprene sheathed

flexible cord. (Code designation IEC:60245 IEC 57 / CENELEC: H05RN-F , IEC:60245 IEC 66 / CENELEC: H07RN-F )

2. Select power supply cord based on MCA.

3. MFA is used to select the circuit breaker and the ground fault circuit interrupter (earth leakage circuit breaker).

4. MCA represents maximum input current.

5. MFA represents capacity which may accept MCA.

Abbreviations

- MCA : Min. Circuit Amps. (A)

- MFA : Max. Fuse Amps. (A

)

Screw Tighten Torque(kgf.cm) Position

M4 12.0~18.0 1(L),2(L),L,N,F1,F2

Model

Outdoor Units Maximum Input Current[A] Power Supply

Rated

Outdoor Indoor(Max.) Total MCA MFA

Outdoor Unit Indoor Unit Hz Volts

AJ040TXJ2KH 2 Room 50/60 1phase,220-240 8.5 0.8 9.3 9.30 10.63

AJ050TXJ2KH 2 Room 50/60 1phase,220-240 11.0 0.9 11.9 11.90 13.75

AJ068TXJ3KH 3 Room 50/60 1phase,220-240 14.0 1.2 15.2 15.20 17.50

AJ080TXJ4KH 4 Room 50/60 1phase,220-240 16.6 1.6 18.2 18.20 20.75

Installation Procedure

English

• Connect the cables to the terminal board using the compressed ring terminal.

• Use rated cables only.

• Connect the cables with driver and wrench that can apply the rated torque to the screws.

• Make sure that appropriate tightening torque is applied for cable connection. If the terminal is loose, arc heat may

occur and cause fire and if the terminal is connected too firmly, terminal may get damaged.

Central control connection (optional)

Turn the power off and take off the cover of the outdoor units.

2. Connect R1/R2 lines which are upper controller communication cables

referring to upper figure .

(Upper controller power should be off.)

3. Assemble a cover of the outdoor unit and turn the power on.

4. Check the communication status.

5. If you install a upper controller to the outdoor unit, every indoor unit which is connected to the outdoor unit can be controlled

simultaneously.

Tightening power terminal

PCB MAIN - OUT

Do not connect the power and communication

wires to these terminal blocks

Terminal blocks(R1,R2) for connection with the Upper Controller

(DMS, Touch, On/Off Controller, etc.)

Installation Procedure

English

Installation Procedure

Outdoor-to-indoor power terminal

specifications

• Connect the cables to the terminal board using the

compressed ring terminal.

• Cover a solderless ring terminal and a connector part

of the power cable and then connect it.

Silver solder

Norminal

dimensions

for cable

(mm²)

Norminal

dimensions

for screw

(mm)

B D d1 E F L d2 t

Standard

dimension

(mm)

Allowance

(mm)

Standard

dimension

(mm)

Allowance

(mm)

Standard

dimension

(mm)

Allowance

(mm)

Min.

(mm)

Min.

(mm)

Max.

(mm)

Standard

dimension

(mm)

Allowance

(mm)

Min.

(mm)

1.5

4 6.6

±0.2 3.4

+0.3

-0.2

1.7 ±0.2 4.1 6 16 4.3

+0.2

0.7

4 8

2.5

4 6.6

±0.2 4.2

+0.3

-0.2

2.3 ±0.2 6 6 17. 5 4.3

+0.2

0.8

4 8.5

4 4 9.5 ±0.2 5.6

+0.3

-0.2

3.4 ±0.2 6 5 20 4.3

+ 0.2

0.9

• Connect the rated cables only.

• Connect using a driver which is able to apply the rated

torque to the screws.

• If the terminal is loose, fire may occur caused by arc. If

the terminal is connected too firmly, the terminal may

be damaged.

Tightening torque (kgf • cm)

M4 12.0 to 18.0

20.0 to 30.0

• 1N · m = 10 kgf · cm

CAUTION

• When connecting cables, you can connect the cables to

the electrical part or connect them through the holes

below depending on the spot.

• Connect the communication cable between the indoor

and outdoor units through a conduit to protect against

external forces, and feed the conduit through the wall

together with refrigerant piping.

• Remove all burrs at the edge of the knock-out hole

and secure the cable to the outdoor knock-out using

lining and bushing with an electrical insulation such as

rubber and so on.

• Must keep the cable in a protection tube.

• Keep distances of 50mm or more between power cable

and communication cable.

• When the cables are connected through the hole,

remove the Plate bottom.

Installation Procedure

English

Installation Procedure

Outdoor-to-indoor power and communication

cables specifications

Indoor power supply

Power supply Max/Min (V) Indoor power cable

1Φ, 220-240V, 50/60 Hz ±10% 1.5 mm²

↑

, 3 wires

Communication cable

0.75 to 1.5 mm², 2 wires

• Power supply cords of parts of appliances for outdoor

use shall not be lighter than polychloroprene sheathed

flexible cord. (Code designation IEC:60245 IEC 57 /

CENELEC: H05RN-F or IEC:60245 IEC 66 / CENELEC:

H07RN-F)

• When installing the indoor unit in a computer room or

net work room, server room or in the presence of risk

of disturbance to the communication cable, use the

double shielded (tape aluminium / polyester braid +

copper ) cable of FROHH2R type.

Step 5 Optional: Extending the power

cable

1 Prepare the following tools.

Tools Spec Shape

Crimping pliers MH-14

Connection sleeve

(mm)

20xØ6.5

(HxOD)

Insulation tape

Width 19

Contraction tube

(mm)

70xØ8.0

(LxOD)

2 As shown in the figure, peel off the shields from the

rubber and wire of the power cable.

• Peel off 20 mm of cable shields from the pre-

installed tube.

20 20 20

120

180

Power cable

202020

120

180

Pre-installed

tube for the

power cable

(Unit: mm)

CAUTION

• For information about the power cable specifications

for indoor and outdoor units, refer to the installation

manual.

• After peeling off cable wires from the pre-installed

tube, insert a contraction tube.

3 Insert both sides of core wire of the power cable into the

connection sleeve.

• Method 1: Push the core wire into the sleeve from

both sides.

• Method 2: Twist the wire cores together and push

it into the sleeve.

English

Installation Procedure

Method 1 Method 2

Connection sleeve

CAUTION

• If cable wires are connected without using connecting

sleeves, their contact area becomes reduced, or

corrosion develops on the outer surfaces of the wires

(copper wires) over a long time. This may cause an

increase of resistance (reduction of passing current)

and consequently may result in a fire.

4 Using a crimping tool, compress the two points and flip

it over and compress another two points in the same

location.

• The compression dimension should be 8.0.

Compression

dimension

• After compressing it, pull both sides of the wire to

make sure it is firmly pressed.

Compress it 4 times

5 mm

Method 1 Method 2

Compress it 4 times

5 mm

5 Apply heat to the contraction tube to contract it.

Contraction tube

Method 1

Contraction tube

Method 2

6 Wrap it with the insulation tape twice or more and

position your contraction tube in the middle of the

insulation tape.

40 mm

Insulation tape

Method 1

35 mm

Insulation tape

Method 2

7 After tube contraction work is completed, wrap it with

the insulation tape to finish.

Three or more layers of insulation are required.

Insulation tape

Method 1

Insulation tape

Method 2

CAUTION

• Make sure that the connection parts are not exposed

to outside.

• Be sure to use insulation tape and a contraction tube

made of approved reinforced insulating materials

that have the same level of withstand voltage with

the power cable. (Comply with the local regulations

on extensions.)

WARNING

• In case of extending the electric wire, please DO NOT

use a round-shaped Pressing socket.

‐ Incomplete wire connections can cause electric

shock or a fire.

Installation Procedure

English

Installation Procedure

Step 6 Connecting the refrigerant pipe

◆ AJ040/050TXJ2KH

1 Piping outside diameter

Indoor unit Out unit

Power supply Ø,

V, Hz

Outside

diameter

Liquid Gas

**020/025/026/035** AJ040TXJ2KH 1,220-240, 50/60 1/4" 3/8"

**020/025/026/035**

AJ050TXJ2KH 1,220-240, 50/60 1/4"

3/8"

**050/052** 1/2"

NOTE

• AJ040TXJ2KH Outdoor unit cannot be connected to

the following indoor unit combination.

-AJ0**TNNDKH/AJ0**TNLDKH

Make at least one round:

It will reduce noise and vibration

2 Piping length and the height

1 Room

max

length

2 Room

total max

length

Max height

between

indoor unit

& outdoor

unit

Max height

between

indoor units

Dimension 25m 30m 15m 7. 5m

Composition A,B A+B (H) (h)

◆ AJ068TXJ3KH

1 Piping outside diameter

Indoor unit Out unit

Power supply Ø,

V, Hz

Outside

diameter

Liquid Gas

**020/025/026/035**

AJ068TXJ3KH 1,220-240, 50/60 1/4"

3/8"

**050/052**

1/2”

2 Piping length and the height

1 Room

max

length

3 Room

total max

length

Max height

between

indoor unit

& outdoor

unit

Max height

between

indoor units

Dimension 25m 50m 15m 7. 5m

Composition A,B,C A+B+C (H) (h)

Main power switch

(h) (H)

Make at least one round:

It will reduce noise and vibration

A B

(h)

(H)

Main power switch

English

Installation Procedure

◆ AJ080TXJ4KH

1 Piping outside diameter

Indoor unit Out unit

Power

supply Ø,

V, Hz

Outside

diameter

Liquid Gas

**020/025/026/035**

AJ080TXJ4KH

1,220-240,

50/60

1/4"

3/8"

**050/052**

1/2”

**068/071**

5/8”

2 Piping length and the height

1 Room

max

length

4 Room

total max

length

Max height

between

indoor

unit &

outdoor

unit

Max height

between

indoor

units

Dimension 25m 70m 15m 7. 5 m

Composition A,B,C,D A+B+C+D (H) (h)

CAUTION

• Minimum pipe length is 3m to reduce noise and

vibration.

• Tighten the nuts to the specified torques.

If overtightened, the nuts could be broken so

refrigerant may leak.

• Protect or enclose refrigerant tubing to avoid

mechanical damage.

NOTE

• The appearance of the unit may be different from the

diagram depending on the model.

• You can use the Cool and Heat modes in the following

conditions :

Model Cool Heat

Outdoor

temperature

-10 °C to 46 °C -15 °C to 24 °C

- It could take maximum 60 minutes to operate for the

protection of the compressor,if the outdoor temperature

is below -5°C.

(h)

(H)

C D

Main power switch

Make at least one round:

It will reduce noise and vibration

Installation Procedure

English

Installation Procedure

Step 7 Optional: Cutting and aring

the pipes

1 Make sure that you have the required tools available.

(pipe cutter, reamer, flaring tool, and pipe holder)

2 If you wish to shorten the pipes, cut it with a pipe

cutter, taking care to ensure that the cut edge remains

at a 90° angle with the side of the pipe. Refer to the

illustrations below for examples of edges cut correctly

and incorrectly.

90°

Oblique

Rough Burr

3 To prevent any gas from leaking out, remove all burrs

at the cut edge of the pipe, using a reamer.

4 Slide a flare nut on to the pipe and flare the pipe.

45° ±2°

90° ±2°

Pipe

Flare

R 0.4 to 0.8 mm

Outer diameter (D) Depth (A) Flare dimension (L)

ø6.35 mm 14 to 18 8.7 to 9.1 mm

ø9.52 mm 34 to 42 12.8 to 13.2 mm

ø12.70 mm 49 to 61 16.2 to 16.6 mm

ø15.88 mm 68 to 82 19.3 to 19.7 mm

5 Check that the flaring is correct, referring to the

illustrations below for examples of incorrect flaring.

Correct Inclined

Damaged

Surface

Cracked

Uneven

Thickness

• If the pipes require brazing ensure that OFN(Oxygen

Free Nitrogen) is flowing through the system.

• Nitrogen blowing pressure range is 0.02 to 0.05 MPa.

Step 8 Connecting refrigerant pipes

and vacuuning

WARNING

• When installing, make sure there is no leakage. When

recovering the refrigerant, ground the compressor first

before removing the connection pipe. If the refrigerant

pipe is not properly connected and the compressor

works with the service valve open, the pipe inhales the

air and it makes the pressure inside of the refrigerant

cycle abnormally high. It may cause explosion and injury.

The outdoor unit is loaded with sufficient R-410A

refrigerant.Do not vent R-410A into atmosphere: it is a

fluorinated greenhouse gas, covered by Kyoto Protocol,

with a Global Warming Potential (GWP) = 2088.

You should purge the air in the indoor unit and in the

pipe. If air remains in the refrigerant pipes, it affects the

compressor. It may cause reduction of cooling capacity

and malfunction. Refrigerant for air purging is not

charged in the outdoor unit. Use Vacuum Pump as seen

in the picture. Check the piping connections.

English

Installation Procedure

1 Check the piping connections.

2 Connect the charging hose of low pressure side of

manifold gauge to the packed valve having a service

port .

Model Name

Valve

3/8'' 1/2''

AJ040TXJ2KH

AJ050TXJ2KH

1 1

AJ068TXJ3KH 1 2

AJ080TXJ4KH 2 2

CAUTION

• Make the electrical connection and leave the system

into “stand by mode”. Do not turn on the system! This

is necessary for better vacuum operation (full OPEN

position of Electronic Expansion Valve - EEV -).

Vacuum

Pump

INDOOR A UNIT

INDOOR B UNIT

3 Open the valve of the low pressure side of manifold

gauge counter clockwise.

4 Purge the air from the system using vacuum pump for

about 30 minutes.

• Close the valve of the low pressure side of manifold

gauge clockwise.

• Make sure that pressure gauge show -0.1MPa(-

76cmHg) after about 1 hour. This procedure is very

important in order to avoid gas leak.

• Turn off the vacuum pump.

• Remove the hose of the low pressure side of

manifold gauge.

5 Set spindle of both liquid side and gas side of stop

valve to the open position.

6 Mount the valve stem nuts and the service port cap to

the valve, and tighten them with a torque wrench.

Outer diameter

(mm)

Tightening torque

Body cap (N•m)

Charging port

cap (N•m)

ø 6.35 20 to 25

10 to 12

ø 9.52 20 to 25

ø 12.70 25 to 30

ø 15.88 30 to 35

Tightening torque for body cap

(Refer to the table)

Spindle

Charging

core

R-410A: Thread of the screw -1/2-2OUNF

Tightening torque for charging port cap (Refer to the table)

Installation Procedure

English

Installation Procedure

Outdoor unit

A(Liquid)

Indoor unit

B(Gas)

Step 9 Performing the gas leak test

Before completing the installation (insulation of the

cables, hose and piping and fixing of the indoor unit to the

installation plate), you must check that there are no gas

leaks.

To check for

gas leaks on

the...

Then, using a leak detector,check the ...

Outdoor unit Valves on sections A and B.

Indoor unit

Flare nuts at the end of sections C and

C D

• The designs and shape are subject to change according

to the model.

LEAK TEST WITH NITROGEN (before opening valves)

Pressure check the refrigerant system using high pressure

nitrogen in order to detect basic refrigerant leaks. Before

performing the vacuum process and releasing the

factory R-410A charge into the refrigerant pipes, it is

the responsibility of the installer to pressurize the whole

system with nitrogen (using a cylinder with pressure

reducer) at a pressure above 4Mpa (gauge).

LEAK TEST WITH R-410A (after opening valves)

Before opening valves, discharge all the nitrogen into the

system and create vacuum. After opening valves check

leaks using a leak detector for refrigerant R-410A.

Once you have completed all the connections, check for

possible leaks using leak detector specifically designed for

HFC refrigerants.

Step 10 Adding refrigerant (R-410A)

Important information regulation regarding the

refrigerant used

This product contains fluorinated greenhouse gases. Do

not vent gases into the atmosphere.

CAUTION

• Inform user if system contains 5 tCO

e or more of

fluorinated greenhouse gases. In this case, it has to

be checked for leakage at least once every 12 months,

according to regulation n°517/2014. This activity has to

be covered by qualified personnel only.

• In case situation above (5 tCO

e or more of R-410A),

installer (or recognized person which has responsibility

for final check) has to provide a maintenance book,

with all the information recorded according to

REGULATION (EU) No 517/2014 OF THE EUROPEAN

PARLIAMENT AND OF THE COUNCIL of 16 April 2014

on fluorinated greenhouse gases.

Please fill in the following with indelible ink on the

refrigerant charge label supplied with this product and

on this manual.

•

: The factory refrigerant charge of the product.

•

: The additional refrigerant amount charged in the

field.

•

+ : The total refrigerant charge.

Indoor Unit

Outdoor Unit

English

Installation Procedure

Unit kg tCO

, a

, b

+ , c

Refrigerant type GWP value

R-410A 2088

• GWP: Global Warming Potential

• Calculating tCO

e : kg x GWP / 1000

NOTE

a Factory refrigerant charge of the product: see unit

name plate

Additional refrigerant amount charged in the

field(Refer to the above information for the

quantity of refrigerant replenishment.)

Total refrigerant charge

Refrigerant cylinder and manifold for charging

Calculating the quantity of refrigerant to add

The quantity of additional refrigerant is variable

according to the installation situation. Thus, make sure

the outdoor unit situation before adding refrigerant.

If you install the excessive length of pipe, add additional

refrigerant as 10g or 20g per unit meter ; refer to the

table below.

Refer to the Service Manual for more details on this

operation.

Model

Total connecting

pipe length (LT)

Adding refrigerant

AJ040TXJ2KH

AJ050TXJ2KH

LT≤30m Chargeless

AJ068TXJ3KH

LT≤30m Chargeless

LT>30m (LT-30m)x10g

AJ080TXJ4KH

LT≤40m Chargeless

LT>40m (LT-40m)x10g

Charging the system with liquid refrigerant

R-410A is a mixed type of refrigerant. It is necessary for

recharging under conditions of liquid. When recharging

refrigerant from the refrigerant cylinder to the

equipment, follow the instructions below.

• Before recharging, check whether the cylinder has

a siphon or not. There are two ways to recharge the

refrigerant.

Cylinder with siphon Cylinder without siphon

siphon

Charge the refrigerant standing

the cylinder upright.

Charge the refrigerant turning

the cylinder upside down.

NOTE

• If R-410A refrigerant is charged with gas, the

composition of the charged refrigerant changes and

the characteristics of the equipment vary.

• While adding refrigerant use an electronic scale to

measure the volume added. If the refrigerant cylinder

doesn’t have a siphon, turn it upside-down.

Installation Procedure

English

Installation Procedure

Step 11 Connecting the drain hose to

the outdoor unit

When heating, ice may accumulate. During the process of

defrosting, check if condensation draining is adequate.

For adequate draining, do the following :

1 Insert the drain plug into the drain hole on the

underside of the outdoor unit.

2 Connect the drain hose to the drain plug.

3 Ensure that condensation draining is adequate.

4 Be sure to plug the rest of drain holes not connected

with drain plugs using drain caps.

• When installing the product, make sure that the

rack is not placed under the drain hole.

• If the product is installed in a region of heavy snow,

allow enough separation distance between the

product and the ground.

Step 12 Checking the earthing

If the power distribution circuit does not have a earthing

or the earthing does not comply with specifications, an

earthing electrode must be installed. The corresponding

accessories are not supplied with the air conditioner.

1 Select an earthing electrode that complies with the

specifications given in the illustration.

2 Connect the flexible hose to the flexible hose port.

• In damp hard soil rather than loose sandy or gravel

soil that has a higher earthing resistance.

• Away from underground structures or facilities,

such as gas pipes, water pipes, telephone lines and

underground cables.

• At least two meters away from a lightening

conductor earthing electrode and its cable.

NOTE

• The earthing wire for the telephone line cannot be

used to ground the air conditioner.

50 cm

30 cm

Carbon plastic

To grounding screw

Steel core

Terminal M4

PVC-insulated

green/yellow

wire

3 Finish wrapping insulating tape around the rest of the

pipes leading to the outdoor unit.

4 Install a green/yellow coloured earthing wire:

• If the earthing wire is too short, connect an

extension lead in a mechanic al way and wrap it

with insulating tape (do not bury the connection).

• Secure the earthing wire in position with staples.

NOTE

• If the earthing electrode is installed in an area with

heavy traffic, its wire must be connected securely.

5 Carefully check the installation by measuring the

earthing resistance with a earth resistance tester. If

the resistance is above the required level, drive the

electrode deeper into the ground or increase the

number of earthing electrodes.

6 Connect the earthing wire to the electrical component

box inside of the outdoor unit.

Drain cap (3EA)

Drain plug (1EA)

English

Installation Procedure

DISPLAY 1

DISPLAY 2

PCB MAIN - OUT

K1 K2

K3 K4

Step 13 Setting an indoor unit address and installation option

Setting the indoor unit addresses manually

1 Review all the following elements in the installation:

• Installation site strength

• Piping connection tightness to detect any gas leakage

• Connection wiring

• Heat-resistant insulation of the piping

• Drainage

• Earthing wire connection

2 Manually set options in each room's the indoor unit by referring to page 26~31.

3 Press the K3 button once or reset the outdoor unit.

NOTE

• The Display 1/2 indications are the same as in the automatic address setting mode.

Setting Key and Display of the outdoor unit

• Key option of the outdoor unit

- K1: Fuction button - K3: Reset button

Key

Push

K1 K3

1 Pipe Checking Operation

Reset

2 Cool Mode Try run

3 Heat Mode Try run

Pump Down

5 Finish Key Operation

 For more information of the Cool or Heat Try run test, refer to page 31.

• K4 View mode Display changes

Push Display Explanation Push Display Explanation

Present Compressor

Frequency

9 Discharge temperature

Target Compressor

Frequency

10 OLP temperature

3 EEV0 current step 11 Condenser temperature

4 EEV1 current step 12 Outdoor temperature

5 EEV2 current step 13 Running current

6 EEV3 current step 14 Target Discharge temperature

7 EEV4 current step 15 Total capacity of the indoor units

Fan RPM (H: high, L:

low, Blank: off )

Safety Control

(just For Service Technician)

Installation Procedure

English

Installation Procedure

Setting the outdoor option

• Press and hold K2 to enter the option setting.

(Only available when the operation is stopped)

– If you enter the option setting, display will show the following.

– Seg 1 and Seg 2 will display the number for selected option.

– Seg 3 and Seg 4 will display the number for set value of the selected option.

• If you have selected desired option, you can shortly press the K1 switch to adjust the value of the Seg 1, Seg 2 and

change the function for the selected option.

Example)

• If you have selected desired option, you can shortly press the K2 switch to adjust the value of the Seg 3, Seg 4 and

change the function for the selected option.

Example)

• After selecting the function for options, press and hold the K2 switch for 2 seconds. Edited value of the option will be

saved when entire segments blinks and tracking mode begins.

Option item Input unit SEG1 SEG2 SEG3 SEG4 Function

Setting to Cool or Heat only mode Main 0 0

0 0

Cooling andHeating (Factory default)

0 1

Only Cooling

0 2

Only Heating

Power improvement mode Main 0 1

0 0

Disabled (Factory default)

0 1

Enabled

Mixed mode indoor input Main 0 2

0 0

Disabled (Factory default)

0 1

Enabled

Auto Change Over Main 0 3

0 0

Disabled

0 1

Enabled (Factory default)

Channel address Main 0 4

A U

Automatic setting(Factory default)

00 ~ 15

Manual setting

CAUTION

• Edited option will not be saved if you do not end the option setting as explained in above instruction.

※ While you are setting the option, you may press and hold the K1 button to reset the value to previous setting.

※ If you want to restore the setting to factory default,press and hold the K4 button while you are in the option setting

mode.

– If you press and hold the K4 button, setting will be restored to factory default but it doesn't mean that restored

setting is saved. Press and hold the K2 button. When the segments shows that tracking mode is in progress,

setting will be saved.

English

Installation Procedure

Setting Option

Low Temp button

High Temp button

Mode button

WindFree button

Fast button

Option setting modeEntering mode for setting option

<AJ***TNAPKH>











<AJ***TNTDKH>

Mode button

Fast button

Eco button

High Temp button

Low Temp button











<AJ***TN*DKH>

Mode button

High Fan button

Low Fan button

High Temp button

Low Temp button











Installation Procedure

English

Installation Procedure

Setting Option

1 Remove batteries from the remote controller

2 Insert batteries and enter the option setting mode while pressing  button and  button.

3 Each time you press  button, 7-seg on left side is increased by “1” and each time you press  button, 7-seg on right

side is increased by “1”

4 You press  button to move to the next setting page.

5 After setting option, press  button to check whether the option code you input is correct or not.

→ → → →

6 Press operation button with the direction of remote control for set.

CAUTION

• SEG1, SEG7, SEG13, SEG19 are not set as page option.

• Set the SEG1, SEG7 as ON status and SEG13, SEG19 as OFF status.

‐ Set the each option separately since you cannot set the ADDRESS setting and indoor unit installation setting

option at the same time.

The procedure of setting option

Operation Indication

Step 1

1 Remove the batteries from the remote controller.

2 Insert batteries while pressing  Button and  Button.

Step 2

1 Press  button to enter SEG2 value.

2 Press  button to enter SEG3 value.

Step 3

Press  button to be change to Cool mode in the ON status.

1 Press  button to enter SEG4 value.

2 Press  button to enter SEG5 value.

English

Installation Procedure

Operation Indication

Step 4

Press  button to be changed to DRY mode in the ON status.

1 Press  button to enter SEG6.

2 Press  button to enter SEG8.

Step 5

Press  button to be changed to FAN mode in the ON status.

1 Press  button to enter SEG9 value.

2 Press  button to enter SEG10 value.

Step 6

Press  button to be changed to HEAT mode in the ON status.

1 Press  button to enter SEG11 value.

2 Press  button to enter SEG12value

Step 7

Press  button to be changed to AUTO mode in the OFF status.

1 Press  button to enter SEG14 value.

2 Press  button to enter SEG15 value.

Step 8

Press  button to be changed to Cool mode in the OFF status.

1 Press  button to enter SEG16 value.

2 Press  button to enter SEG17 value.

Step 9

Press  button to be changed to DRY mode in the OFF status.

1 Press  button to enter SEG18 value.

2 Press  button to enter SEG20 value.

Step 10

Press  button to be changed to FAN mode in OFF status

1 Press  button to enter SEG21 value.

2 Press  button to enter SEG22 value.

Step 11

Press  button to be changed to HEAT mode in the OFF status

1 Press  button to enter SEG23 value.

2 Press  button to enter SEG24 value.

Step 12

Press  button to check whether the option code you entered is correct or not.

Press operation button

to enter option.

Installation Procedure

English

Installation Procedure

Setting the indoor unit addresses automatically

NOTE

• For the best results, make sure that electrical wiring is

done properly.

• For the best results, the outdoor temperature should

be between 5 to 40 ℃ (*) and the indoor temperature

16 ℃ or higher (*).

※ (*) Auto addressing may fail when the temperature

is out of the range above. In this case, set the address

manually.

CAUTION

• Connecting one indoor unit to this product is

prohibited. Don't use pipe checking operation and

auto addressing mode when only one indoor unit is

installed.

1 Turn on the outdoor unit, and then check whether the

display 1/2 indications are displayed "E199" code.

※ During the initial , display 1 shows "

" and display 2

shows the connected indoor number.

• If different display code is shown, see

Troubleshooting on page 35 and take corrective

actions.

2 Push once the K1 button.

3 After the operations described above have been

performed, the system starts in Cooling or Heating

mode, depending on the external ambient

temperature. After a few minutes (from a minimum of

3 to 5 minutes for the internal unit), the system stops

automatically, completing the self-test and addressing

procedure."

" appears on the display of the

outdoor unit.

4 20 seconds after the display of "

" (that confirms

the correct execution of the procedure), the following

codes (if four internal units are connected) display in

sequence on the display of the outdoor unit:

Display1 Display2 Description

The outdoor unit is communicating