AC100TXAPNG - Air-conditioner SAMSUNG - Free user manual and instructions

USER MANUAL AC100TXAPNG SAMSUNG

• Thank you for purchasing this Samsung air conditioner.
• Before operating this unit, please read this manual carefully and retain it for future reference.

Safety Information 4

General information 4

Installing the unit 5

Power supply line, fuse or circuit breaker 6

Installation Procedure 7

Step 1 Choosing the installation location 7

Step 2 Fixing the outdoor unit in place 10

Step 3 Connecting the power cables, communication cable, and controllers 11

Step 4 Optional: Extending the power cable 17

Step 5 Connecting the refrigerant pipe 19

Step 6 Optional: Cutting and flaring the pipes 20

Step 7 Installing oil traps 21

Step 8 Connecting up and removing air in the circuit 22

Step 9 Adding refrigerant (R-32) 23

Step 10 Performing the gas leak test 25

Step 11 Connecting the drain hose to the outdoor unit 26

Step 12 Insulating the refrigerant pipes 26

Step 13 Checking the earthing 27

Step 14 Performing final check and trial operation 28

Extra procedures 31

Pumping down refrigerant 31

Relocating the indoor and outdoor units 31

Using the stop valve 32

Maintenance Procedures 33

Performing the gas leak tests for repair 33

Decommissioning 33

Appendix 34

Troubleshooting 34

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.

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.

Carefully follow the precautions listed below because they are essential to guarantee the safety of the equipment.

WARNING

• Always disconnect the air conditioner from the power supply before servicing it or accessing its internal components.
• Verify that installation and testing operations are performed by qualified personnel.
• Verify that the air conditioner is not installed in an easily accessible area.

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.
• Do not use means to accelerate the defrost operation or to clean, other than those recommended by Samsung.
• Do not pierce or burn.
• Be aware that refrigerants may not contain an odour.
• 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.

- For use in Europe: This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understand the hazards involved. Children shall not play with the appliance. Cleaning and user maintenance shall not be made by children without supervision.

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.
• Do not install the product in a place where thermohygrostat is needed (such as server room, machinery room, computer room, etc.) Those places do not provide guaranteed operation condition of the product therefore performance can be poor in these places.
• Do not install the product in a ship or a vehicle (such as a campervan). Salt, vibration or other environmental factor may cause the product malfunction, electric shock or fire.

• 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.

• The outdoor unit shall be installed in an open space that is always ventilated.
• The local gas regulations shall be observed.
• To handle, purge, and dispose the refrigerant, or break into the refrigerant circuit, the worker should have a certificate from an industry-accredited authority.
• While in installation or relocation of the product, do not mix the refrigerant with other gases including air or unspecified refrigerant. Failure to do so may cause pressure increase to result in rupture or injury.
• Do not cut or burn the refrigerant container or pipings.
• Use clean parts such as manifold gauge, vacuum pump, and charging hose for the refrigerant.
• Installation must be carried out by qualified personnel for handling the refrigerant. Additionally, reference the regulations and laws.
• Be careful not to let foreign substances (lubricating oil, refrigerant, water, etc.) enter the pipings.
• When mechanical ventilation is required, ventilation openings shall be kept clear of obstruction.
• For disposal of the product, follow the local laws and regulations.
• Do not work in a confined place.
  • The work area shall be blocked.
• The refrigerant pipings shall be installed in the position where there are no substances that may result in corrosion.
• The following checks shall be performed for installation:
• The charging amount depends on the room size.
• The ventilation devices and outlets are operating normally and are not obstructed.
• Markings and signs on the equipment shall be visible and legible.

• Upon leakage of the refrigerant, ventilate the room. When the leaked refrigerant is exposed to flame, it may cause generation of toxic gases.

• Make sure that the work area is safe from flammable substances.

• To purge air in the refrigerant, be sure to use a vacuum pump.
  • Note that the refrigerant has no odour.
• The units are not explosion proof so they must be installed with no risk of explosion.
• This product contains fluorinated gases that contribute to global greenhouse effect. Accordingly, do not vent gases into the atmosphere.
• For installation with handling the refrigerant(R-32), use dedicated tools and piping materials. Working pressure of R-32 is higher than R410A, So failure to use the dedicated tools and piping materials may cause rupture or injury. Furthermore, it may cause serious accidents such as water leakage, electric shock or fire.
• Servicing shall be performed as recommended by the manufacturer. In case other skilled persons are joined for servicing, it shall be carried out under supervision of the person who is competent in handling flammable refrigerants.
• For servicing the units containing flammable refrigerants, safety checks are required to minimise the risk of ignition.
• Servicing shall be performed following the controlled procedure to minimize the risk of flammable refrigerant or gases.
• Do not install where there is a risk of combustible gas leakage.
• Do not place heat sources.
• Be cautious not to generate a spark as follows:
• Do not remove the fuses with power on.
• Do not disconnect the power plug from the wall outlet with power on.
• It is recommended to locate the outlet in a high position. Place the cords so that they are not tangled.
• If the indoor unit is not R-32 compatible, an error signal appears and the unit will not operate.
• After installation, check for leakage. Toxic gas may be generated and if it comes into contact with an ignition source such as fan heater, stove, and cooker, cylinders, make sure that only the refrigerant recovery cylinders are used.

- Never directly touch any accidental leaking refrigerant. It could result in severe wounds caused by frostbite.

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 4 Optional: Extending the power cable in the installation manual.

Step 1 Choosing the installation location

WARNING

- Because your air conditioner contains R-32 refrigerant, make sure that it is installed, operated, and stored it in a room whose floor area is larger than the minimum required floor area specified in the following table:

Minimum required room area (A, m^2 )
m (kg)	Ceiling-mounted type	Wall-mounted type	Floor-standing type
≤ 1.842 No requirement
1.843 3.64 4.45 28.9
1.9 3.75 4.58 30.7
2.0 3.95 4.83 34.0
2.2 4.34 5.31 41.2
2.4 4.74 5.79 49.0
2.6 5.13 6.39 57.5
2.8 5.58 7.41 66.7
3.0 5.92 8.51 76.6
3.2 6.48 9.68 87.2
3.4 7.32 10.9 98.4
3.6 8.20 12.3 110
3.8 9.14 13.7 123
4.0 10.1 15.1 136
4.2 11.2 16.7 150
4.4 12.3 18.3 165
4.6 13.4 20.0 180
4.8 14.6 21.8 196
5.0 15.8 23.6 213
5.2 17.1 25.6 230

• m : Total refrigerant charge in the system

• A : Minimum required room area

• IMPORTANT: it's mandatory to consider either the table 1 or taking into consideration the local law regarding the minimum living space of the premises.

• Minimum installation height of indoor unit is 0.6 m for floor mounted, 1.8 m for wall, 2.2 m for ceiling.

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 a 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.

Indoor Unit Control 1 m or more 1 m or more Stereo Computer etc Air Guide Duct (This product is not provided by Samsung) 1.5 m or more 1.5 m or more 300 mm Fuse Outdoor Unit 200 mm

• 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 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.

Sea breeze Sea Outdoor Unit Protection wall

CAUTION

- Depending on the condition of power supply, unstable power or voltage may cause malfunction of the parts or control system. (At the ship or places using power supply from electric generator...etc)

• Install the unit in a place where water can drain smoothly.
- If you have any difficulty finding installation location as prescribed above, contact your manufacturer for details.
- Be sure to clean the sea water and the dust on the heat exchanger of the outdoor unit and apply a corrosion inhibitor on it. (At least once in a year.)
- 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 500m of seashore, special anti-corrosion treatment is required.
  ※ Please contact your local SAMSUNG representative for further details.

Outdoor unit dimensions

(Unit:

A Type
AC090TXAPKG

B Type
AC100TXAPKG / AC100TXAPNG / AC120TXAPKG / AC120TXAPNG / AC140TXAPKG / AC140TXAPNG / AC160TXAPKG / AC160TXAPNG

940 1395 1420

Minimum clearances for the outdoor unit

When installing 1 outdoor unit

(Unit: 150 or more 500 or more 150 or more 150 or more 1000 or more 1000 or more 500 or more 150 or more 150 or more 1000 or more

When installing more than 1 outdoor unit

(Unit: 1000 or more 200 or more 2000 or more 3000 or more 150 or more 300 or more 150 or more 1500 or more 1000 or more

300 or more 150 or more 150 or more mm) 300 or more 300 or more 500 or more 500 or more 300 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. mm)

WARNING

- Should adopt bar type louver. Don't use a type of rain resistance louver.

[Bar type louver] [Rain resistance louver]

- Louver specifications.

• Angle criteria : less than 20°
• Opening ratio criteria : greater than 80%

Moving the outdoor unit with wire rope

1 Before carrying the outdoor unit, fasten two wire ropes of 8 m or longer, as shown in the figure.
2 To prevent damages or scratches effectively, insert a piece of cloth between the outdoor unit and the ropes.
3 Move the outdoor unit.

Wire rope Plate protection cloth

Step 2 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 at a height or in a location exposed to strong winds, fix the unit securely to a support (i.e., a wall or a ground).

Fix the outdoor unit with anchor bolts. Make sure that the anchor bolts are 20 mm or higher from the base surface.

Anchor bolt hole (Unit : mm) 330 360 384 620 940

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.

Two technical diagrams showing 3D block arrangements with cross symbols, no text or labels present

• Make sure that the wall can support the weights of the rack and the outdoor unit.
• Install the rack close to the column as much as possible.

Optional: Fixing the outdoor unit to a wall with a rack

Designed to cut off residual vibration from outdoor unit to rack. (not supplied with product) Anchor bolt 20 mm Base surface Soft rubber designed to cut off vibration from rack to wall. (not supplied with product)

• 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 3 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 uninstalled, 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.

Air conditioning system examples

When using earth leakage circuit breaker (ELCB) for a single phase

graph LR
    A["Main power cable"] --> B["Outdoor Unit"]
    B --> C["Indoor Unit"]
    D["MCCB 1#"] --> E["ELB"]
    F["ELCB 1#"] --> E
    G["Earthing"] --> B
    H["Communication cable"] -.-> B
    I["Outdoor-to-indoor power cable"] -.-> B

When using earth leakage circuit breaker (ELCB) for a 3-phase, 4-wire system (3P4W)

graph LR
    A["Main power cable"] --> B["Outdoor Unit"]
    C["Indoor Unit"] --> D["Outdoor Unit"]
    E["Communication cable"] -.-> F["Earthing"]
    G["Outdoor-to-indoor power cable"] -.-> H["ELB"]
    I["MCCB 3¢"] --> J["ELB"]
    K["ELCB 3¢"] --> L["OR"]

CAUTION

• If the outdoor unit is installed in a location vulnerable to an electric leak or submergence, make sure to install an ELCB.

• For the product that uses the R-32 refrigerant, be cautious not to generate a spark by keeping the following requirements:

• Do not remove the fuses with power on.

• Do not disconnect the power plug from the wall outlet with power on.
• It is recommended to locate the outlet in a high position. Place the cords so that they are not tangled.

Connecting the main power cable

When using ELB for 1 phase and 3 phase

Power supply MCCB ELB Electrical component box The appearance of the unit may be different from the picture depending on the model. Indoor Unit 1-phase 1(L) 2(N) L N F1 F2 Cable tie Outdoor-to-indoor power cable Main power cable Communication cable 3-phase 1(L) 2(N) L1(R) L2(S) L3(T) N F1 F2 Outdoor-to-indoor power cable 3-phase 4-wire main power cable (AC 380V) Cable tie Communication cable

CAUTION

• You should connect the power cable into the power cable terminal and fasten it with a clamp.
• The unbalanced power must be maintained within 2% of supply rating.

If the power is unbalanced greatly, it may shorten the life of the condenser. If the unbalanced power is exceeded over 4% of supply rating, the indoor unit is protected, stopped and the error mode indicates.

• To protect the product from water and possible shock, you should keep the power cable and the connection cord of the indoor and outdoor units within ducts. (with appropriate IP rating and material selection for your application)
• Ensure that main supply connection is made through a switch that disconnects all poles, with contact gap of a least 3 mm.
  • Devices disconnected from the power supply should be completely disconnected in the condition of overvoltage category.
• Keep distances of 50 mm or more between power cable and communication cable.

Main power terminal block specifications

• 1-phase terminal block specifications

(Unit:

AC090/100/120/140/160/TXAPKG 1(L) 2(N) L N F1 F2 16.3 12 11.4 10.1

• 3-phase terminal block specifications

mm) (Unit: AC100/120/140/160/TXAPNG 1(L) 2(N) L1(R) L2(S) L3(T) N 9.8 14.2 11.4 F1 F2 10.1

Main power cable specifications

The power cable is not supplied with air conditioner.

• Select the power supply cable in accordance with relevant local and national regulations.
• Wire size must comply with the applicable local and national code.
• Specifications for local wiring power cord and branch wiring are in compliance with local cord.

Single phase

Model Outdoor unit		Input current (A)				Power supply
Indoor unit	Outdoor unit	Hz	Voltage range (V)			Outdoor unit		Indoor unit	Total MCA (A) MFA (A)
			Rated	Min.	Max.	Cooling	Heating
AC090TNHDKG	AC090TXAPKG	50 220 to 240	198	264	24	24	2.3	26.3	26.3	30.0
AC100TN4DKG	AC100TXAPKG						1.5	25.5	25.5	30.0
AC100TN4PKG							1.5	25.5	25.5	30.0
AC100TNHDKG							2.7	26.7	26.7	30.0
AC100TNHPKG							2.7	26.7	26.7	30.0
AC120TN4DKG	AC120TXAPKG				32	32	1.5	33.5	33.5	40.0
AC120TN4PKG							1.5	33.5	33.5	40.0
AC120TNHDKG							2.9	34.9	34.9	40.0
AC120TNHPKG							3.1	35.1	35.1	40.0
AC140TN4DKG	AC140TXAPKG						1.5	33.5	33.5	40.0
AC140TN4PKG							1.5	33.5	33.5	40.0
AC140TNHDKG							3.5	35.5	35.5	40.0
AC140TNHPKG							3.9	35.9	35.9	40.0
AC160TNHFKG	AC160TXAPKG						3.1	35.1	35.1	40.0
AC160TNHPKG							4.2	36.2	36.2	40.0

3-phase

Model Outdoor unit Input current (A) Power supply
Indoor unit Outdoor unit Hz			Voltage range (V) Outdoor unit					Indoor unit Heating	Total MCA	(A) MFA (A)
			Rated	Min.	Max.	Cooling
AC100TNHDKG	AC100TXAPNG	50 38	to 415 342	456.5 16.1	16.1			2.7 18.8	18.8 18.8
AC100TNHPKG								2.7 18.8	18.8 18.8
AC120TNHDKG	AC120TXAPNG							2.9 19.0	19.0 19.0
AC120TNHPKG								3.1 19.2	19.2 19.2
AC140TNHDKG	AC140TXAPNG							3.5 19.6	19.6 19.6
AC140TNHPKG								3.9 20.0	20.0 20.0
AC160TNHFKG	AC160TXAPNG							3.1 19.2	19.2 19.2
AC160TNHPKG								4.2 20.3	20.3 20.3

NOTE

1 Voltage range

- Units are suitable for use on electrical systems where voltage supplied to unit terminal is not below or above listed range limits.

2 Maximum allowable voltage variation between phases is 2%.

3 Wire size & type must comply with the applicable local and national code.

• Wire size: Based on the value of MCA.
- Wire type: 60245 IEC57(IEC) or H05RN-F(CENELEC) grade or more.

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

5 MCA represents maximum input current.

• MFA represents capacity which may accept MCA
- Abbreviations

MCA: Min. Circuit Amps. (A)

MFA: Max. Fuse Amps. (A)

6 This equipment complies with IEC 61000-3-12 provided that the short-circuit power Ssc is greater than or equal to Ssc (\*2) at the interface point between the user's supply and the public system. It is the responsibility of the installer or user of the equipment to ensure, by consultation with the distribution network operator if necessary, that the equipment is connected only to a supply with a short-circuit power Ssc greater than or equal to Ssc(\*2).

Model	Ssc[MVA]
AC090TXAPKG	0.9
AC100TXAPNG	1.8
AC120TXAPNG	1.8
AC140TXAPNG	1.8
AC160TXAPNG	1.8

Silence mode controller wiring diagram

Outdoor unit ASSY Control out 88 88 Non-voltage contact

Connecting the outdoor-to-indoor power cable and the communication cable

- The designs and shape are subject to change according to the model.

1-phase

For connecting the power and communication cables Indoor Unit Outdoor Unit 153.20kΩ LN Cable tie Outdoor-to-indoor power cable Main power cable Communication cable

3-phase

Indoor Unit Outdoor Unit 3-phase 4-wire main power cable (AC 380V) Cable tie Communication cable Outdoor-to-indoor power cable

NOTE

• Lay the electrical wiring so that the front cover does not rise up when doing wiring work and attach the front cover securely.
• Ground wire for the indoor unit and outdoor unit connection cable must be clamped to a soft copper tin-plated eyelet terminal with M4 screw hole(NOT SUPPLIED WITH UNIT ACCESSORIES).

Installation Procedure

DRED wiring diagram

graph TD
    A["Outdoor unit"] --> B["ASSY Control out"]
    B --> C["COMMON"]
    C --> D["DRM1"]
    C --> E["DRM2"]
    C --> F["DRM3"]
    C --> G["DRED Controller"]
    G --> H["Output"]

Cable specification

Model Power cable Interconnection cable
AC***TXAP*G ±10%	4 Wires, 0.75mm ^2 H07RN-F (60245 IEC66)(Only for reference)

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.

Rd d2 Silver solder B F E L D1 t

4/6	49.5		±0.2 5.6		+0.3-0.2	3.4 ±0.2	2 6		5 20	4.3		+0.20	0.9
	8 15 9	28.5 8.4										+0.40
10 8 15	±0.2 7.1				+0.3-0.2	4.5 ±0.2	7.9 9 30	8.4				+0.40	1.15
16 8 16	±0.2 9				+0.3-0.2	5.8	±0.2	9.5	13	33	8.4	+0.40	1.45
25	8	12	±0.3	11.5	+0.5-0.2	7.7 ±0.2	2 11		15	34	8.4	+0.40	1.7
	8	16.5							13		8.4
35	8	16	±0.3	13.3	+0.5-0.2	9.4 ±0.2	12.5	13	13	38 8	4	+0.40	1.8
	8 22								43 8.4
50 8 22	±0.3	13.5			+0.5-0.2	11.4	±0.3	17.5	14	50	8.4	+0.40	1.8
70 8 24	±0.4	17.5			+0.5-0.4	13.3	±0.4	18.5	20	51	8.4	+0.40	2.0

• 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 (N·m)
M4 0.8 to 1.2
M5 2.0 to 3.0

- 1 N·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.

Outdoor-to-indoor power and communication cables specifications

Indoor power supply
Power supply Max/Min (V) Indoor power cable
1ø, 220-240V,50 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, use the double shielded (tape aluminium / polyester braid + copper) cable of FROHH2R type.

Cross-sectional diagram of a cable with internal mesh structure (no text or symbols)

Step 4 Optional: Extending the power cable

1 Prepare the following tools.

Tools Spec Shape
Crimping pliers MH-14
Connection sleeve (mm)	20x∅6.5 (HxOD)
Insulation tape	Width 19 mm
Contraction tube (mm)	70x∅8.0 (LxOD)

Installation Procedure

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.

Power cable (Unit: mm) 20 20 20 60 120 180 120 60 202020 Pre-installed tube for the power cable

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.

Method 1 Method 2

Two schematic diagrams of electrical components with arrows indicating direction (no text or symbols)

Connection sleeve Connection sleeve

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 8

• After compressing it, pull both sides of the wire to make sure it is firmly pressed.

Method 1 Method 2

Compress it 4 times. 5 mm

5 Wrap it with the insulation tape twice or more and position your contraction tube in the middle of the insulation tape.

Method 1 Method 2

Insulation tapeInsulation 35 mm40 mm

6 Apply heat to the contraction tube to contract it.

Method 1 Method 2

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.

7 After tube contraction work is completed, wrap it with the insulation tape to finish.

Three or more layers of insulation are required.

Method 1 Method 2 Insulation tape Insulation tape

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.

Pure electrical circuit symbol for a logic gate without any text or labels

Step 5 Connecting the refrigerant pipe

Items	Maximum allowable length
	Single Installation
Applicable outdoor unit models	AC090TXAPKG	AC100TXAP*GAC120TXAP*GAC140TXAP*GAC160TXAP*G
Main pipe (L1) 50	m 85 m
Max. height difference between outdoor and indoor units (h1)	30 m 30 m

- "n" means the number of indoor unit connection of DPM.

graph TD
    A[" outdoor "] --> B["L1"]
    B --> C[" indoor "]
    C --> D["h1"]
    style A fill:#f9f,stroke:#333
    style D fill:#bbf,stroke:#333

• Temper grade and minimum thickness of the refrigerant pipe

Outer diameter [mm]	Minimum thickness [mm]	Temper grade
ø6.35 0.7		C1220T-O
ø9.52 0.7
ø12.70 0.8
ø15.88 1.0
ø15.88 0.8		C1220T-1/2H OR C1220T-H
ø19.05 0.9
ø22.23 0.9

CAUTION

- Be sure to use C1220T-1/2H (Semi-hard) pipe for more than ∅19.05 mm. If you use C1220T-O (Soft) pipe for ∅19.05 mm, the pipe may be broken, which can result in an injury.

Make at least one round: rit will reduce noise and vibration

- The appearance of the unit may be different from the diagram depending on the model.

CAUTION

• After connecting the pipes with knock-out treatment, plug the space around the pipes.
• After connecting the pipes, proceed exactly as directed in the guide to prevent interference with the internal parts.
- 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.

Step 6 Optional: Cutting and flaring 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.

Pipe cutter 90° Pipe 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 modify the flare.

D A Pipe Flare 90° ±2° 45° ±2° R 0.4 to 0.8 mm D Flare

Outer diameter (D) Depth (A) Flare dimension (L)
ø6.35 mm 1.3mm	8.7 to 9.1 mm
ø9.52 mm 1.8mm	12.8 to 13.2 mm
ø12.70 mm 2.0mm	16.2 to 16.6 mm
ø15.88 mm 2.2mm	19.3 to 19.7 mm
ø19.05 mm 2.2mm	23.6 to 24.0 mm

5 Check that the flaring is correct, referring to the illustrations below for examples of incorrect flaring.

1 2 3 Correct Inclined Damaged Surface Cracked Uneven Thickness

CAUTION

• Keep the piping length at a minimum to minimize the additional refrigerant charge due to piping extension.
• When connecting the pipes, make sure that surrounding objects do not interfere with or contact them to prevent refrigerant leakage due to physical damage.
• Make sure that the spaces where the refrigerant pipes are installed comply with national gas regulations.
• Be sure to perform works such as additional refrigerant charging and pipe welding under the conditions of good ventilation.
• Be sure to perform welding and piping works for mechanical connections under the conditions that the refrigerant does not circulate.
• When reconnecting the pipes, make sure to perform flared-jointing newly to prevent refrigerant leakage.
• When working on the refrigerant pipes and the flexible refrigerant connectors, be careful that they are not damaged physically by surrounding objects.
• For installation with handling the R-32 refrigerant, use the special tools for the R32 refrigerant (manifold gauge, vacuum pump, charging hose, etc.).
• During tests never pressurize the appliances with a pressure higher than the maximum allowable pressure(as indicated on the nameplate of the unit).

• Never directly touch any accidental leaking refrigerant. This could result in severe wounds caused by frostbite.

• Never install a dryer to this unit in order to guarantee its lifetime.

• 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.
• If you need a pipe longer than specified in piping codes and standards, you must add refrigerant to the pipe. Otherwise, the indoor unit may freeze.
• While removing burrs, put the pipe face down to make sure that the burrs do not get in to the pipe.

Step 7 Installing oil traps

Check the following list and install an oil trap.

• Based on cooling operation, install it on the gas side pipe only.
  • Install the oil trap only in between the outdoor unit and the first branch joint and it should be installed at every 10 m.
• Radius of curvature (R) on the oil trap are as follows;

Pipe diameter (D, mm)	12.70	15.88	19.05	22.23	25.40	28.60	31.75
Radius of curvature (R, mm)	25 and over	32 and over	38 and over	41 and over	51 and over	57 and over	60 and over

• Height of the oil trap (H): 4R ≤ H ≤ 6R
• When the indoor unit is installed at a higher place than the outdoor unit

Outdoor Unit Indoor Unit Oil trap (Install it at every 10 m)

Step 8 Connecting up and removing air in the circuit

CAUTION

- 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 air in the indoor unit and in the pipe must be evacuated. If air remains in the refrigerant pipes, it will affect the compressor either reduce cooling/heating capacity or lead to a malfunction. Refrigerant for air purging is not charged in the outdoor unit. Use Vacuum Pump as shown at the right figure.

1 Connect each assembly pipe to the appropriate valve on the outdoor unit and tighten the flare nut.
2 Referring to the illustration below, tighten the flare nut on section D first manually and then with a torque wrench, applying the following torque.

Outdoor Unit A (Gas) B (Liquid) C D

Outer Diameter (mm)	Torque (N·m)
ø6.35 14 to 18
ø9.52 34 to 42
ø12.70 49 to 61
ø15.88 68 to 82
ø19.05 100 to 120

3 Connect the charging hose of low pressure side of manifold gauge to the packed valve having a service port as shown at the figure.

CAUTION

• The designs and shape are subject to change according to the model.
  4 Open the valve of the low pressure side(A) of manifold gauge anticlockwise.

Outdoor Unit Vacuum Pump A(Gas) B(liquid)

5 Purge the air from the system using vacuum pump for about 10 minutes.

• Close the valve of the low pressure side of manifold gauge clockwise.
• Make sure that pressure gauge shows -0.1 MPa (-76 cmHg) after about 10 minutes. This procedure is very important to avoid a gas leak.
• Turn off the vacuum pump.
• Remove the hose of the low pressure side of manifold gauge.

6 Open the stop valve of both liquid and gas sides.
7 Mount the valve stem nuts and the service port cap to the valve, and tighten them at the torque of 18 N·m with a torque wrench.

8 Check for gas leakage.

- At this time, especially check for gas leakage from the 3-way valve's stem nuts(A port), and from the service port cap.

CAUTION

• Connect the indoor and outdoor units using pipes with flared connections (not supplied). For the lines, use insulated, unwelded, degreased and deoxidized copper pipe, (Cu DHP type to ISO 1337 or UNI EN 12735-1), suitable for operating pressures of at least 4200 kPa and for a burst pressure of at least 20700 kPa. Copper pipe for hydro-sanitary applications is completely unsuitable.
• For sizing and limits (height difference, line length, max. bends, refrigerant charge, etc.) see "Connecting refrigerant pipe section".

Step 9 Adding refrigerant (R-32)

Precautions on adding the R-32 refrigerant

In addition to the conventional charging procedure, the following requirements shall be kept.

• Make sure that contamination by other refrigerants does not occur for charging.
• To minimize the amount of refrigerant, keep the hoses and lines as short as possible.
  • The cylinders shall be kept upright.
• Make sure that the refrigeration system is earthed before charging.
• Label the system after charging, if necessary.
• Extreme care is required not to overcharge the system.
• Before recharging, the pressure shall be checked with nitrogen blowing.
  • After charging, check for leakage before commissioning.
• Be sure to check for leakage before leaving the work area.
• The outdoor unit is loaded with sufficient refrigerant for the standard piping. Thus, refrigerant must be added if the piping is lengthened. This operation can only be performed by a qualified refrigeration specialist. To determine the quantity of refrigerant charge, see Calculating the quantity of refrigerant to add on page 25.

1 Check if the stop valve is closed completely.
2 Charge the refrigerant through the service port of the liquid stop valve.

NOTE

• Do not charge the refrigerant through the service port of the gas stop valve.
  3 If you have any difficulty charging the refrigerant as described in the steps above, take the following steps:

a Open the liquid stop valve and gas stop valve.

b Operate the air conditioner by pressing the K2 key on the outdoor unit PCB.

c After about 30 minutes, charge the refrigerant through the service port of the gas stop valve.

Indoor Unit Liquid side stop valve(service port) Gas side stop valve(service port) Outdoor Unit Balance Ref Vacuum pump

Important information: regulation regarding the refrigerant used

This product contains fluorinated greenhouse gases. Do not vent gases into the atmosphere.

CAUTION

• Inform user if the system contains 5 tCO _2 or more of fluorinated greenhouse gases. In this case, it must be checked for leakage at least once every 12 months, according to regulation No. 517/2014. This activity must be covered by qualified personnel only.
• In the case of the situation above, the installer (or authorized person with responsibility for final check) must 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.

Installation Procedure

Please fill in the following with indelible ink on the refrigerant charge label supplied with this product and on this manual.

• ①: The factory refrigerant charge of the product.
• ②: The additional refrigerant amount charged in the field.
• +1 The total refrigerant charge.

graph TD
    A["Indoor Unit"] --> B["Valve ②"]
    B --> C["Outdoor Unit ①"]
    B --> D["Down arrow"]

Unit kg tCO2e
1, a
2, b
1 + 2c

Refrigerant type GWP value
R-32 675

• GWP: Global Warming Potential
• Calculating tCO _2 e : kg x GWP / 1000

NOTE

a Factory refrigerant charge of the product: see unit name plate
b Additional refrigerant amount charged in the field(Refer to the above information for the quantity of refrigerant replenishment.)
c Total refrigerant charge
d Refrigerant cylinder and manifold for charging

CAUTION

- The filled-out label must be adhered in the proximity of the product charging port (e.g. onto the inside of the stop valve cover).

- Make sure that the total refrigerant charge does not exceed (A), the maximum refrigerant charge, which is calculated in the following formula: Maximum refrigerant charge (A) = factory refrigerant charge (B) + maximum additional refrigerant charge due to piping extension (C).

- The filled-out label must be adhered in the proximity of the product charging port (e.g. onto the inside of the stop valve cover). - Make sure that the total refrigerant charge does not exceed (A), the maximum refrigerant charge, which is calculated in the following formula: Maximum refrigerant charge (A) = factory refrigerant charge (B) + maximum additional refrigerant charge due to piping extension (C).

(Unit: g)

Model A B C
AC090TXAPKG 3600 2700		900
AC100TXAP*G	5575 3100 2475
AC120TXAP*G	5975 3500 2475
AC140TXAP*G	5975 3500 2475
AC160TXAP*G	5975 3500 2475

Charging the refrigerant under conditions of liquid by using a liquid pipe

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

Charge the refrigerant standing the cylinder upright.

Cylinder without siphon

Charge the refrigerant turning the cylinder upside down.

NOTE

- During the measuring operation of refrigerant quantity added use an electronic balance. If cylinder doesn't have syphon, upset it.

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. This operation can only be performed by a qualified refrigeration specialist.

Single installation outdoor unit

Model	Interconnection pipe length (m)
	0~30	30~40	40~50	50~60	60~70	70~85
AC090TXAPKG	0	+45 g/m over 30 m		-	-	-
AC100TXAP*G AC120TXAP*G AC140TXAP*G AC160TXAP*G	0 +45 g/m over 30 m

Step 10 Performing the gas leak test

LEAK TEST WITH NITROGEN (before opening valves)

In order to detect basic refrigerant leaks, before recreating the vacuum and recirculating the R-32, it is the responsibility of the installer to pressurize the whole system with nitrogen (using a cylinder with pressure reducer) at a pressure Above 0.2MPa, less than 4MPa (gauge).

LEAK TEST WITH R-32 (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-32.

Once you have completed all the connections, check for possible leaks using leak detector specifically designed for HFC refrigerants.

A(Cas) B(liquid)

• The designs and shape are subject to change according to the model.

Step 11 Connecting the drain hose to the outdoor unit

When using the air conditioner in the heating mode, ice may accumulate. During de-icing (defrost operation), the condensed water must be drained off safely. Consequently, you must install a drain hose on the outdoor unit, following the instructions below.

1 Make space more than 80 mm between the bottom of the outdoor unit and the ground for installation of the drain hose, as shown in figure.
2 Insert the drain plug into the hole on the underside of the outdoor unit.
3 Connect the drain hose to the drain plug.
4 Ensure that the drained water runs off correctly and safely.

80 mm 13 mm

5 Be sure to plug the rest of drain holes not connected with drain plugs using drain caps.

Drain cap (3EA) Drain plug (1EA)

• 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 Insulating the refrigerant pipes

Once you have checked that there are no leaks in the system, you can insulate the piping and hose.

1 To avoid condensation problems, place an insulator around each refrigerant pipe.

No gap NBR

NOTE

• When insulate the pipe, be sure to overlap the insulation.
• The insulation has to be produced in full compliance of European regulation reg. EEC / EU 2037/ 2000 that requires the use of sheaths insulation form without using CFC and HCFC gases for health and the environment.

CAUTION

• When insulating the pipe, use non-slit insulator.
  2 Select the insulation of the refrigerant pipe.

- Insulate the gas side and liquid side pipe referring to the thickness according to the pipe size.

- Less than Indoor temperature of 30^ C and humidity of 85% is the standard condition. If installing in a high humidity condition, use one grade thicker insulator by referring to the table below. If installing in an unfavourable conditions, use thicker one.

- Insulator's heat-resistance temperature should be more than 120°C.

Pipe	Pipe size (mm)	Insulation Type (Heating/Cooling)		Remarks
		Standard [Less than 30°C, 85%]	High humidity [over 30°C, 85%]
		EPDM, NBR
Liquid pipe	∅6.35~∅9.52	9 t 9 t		Internal temperature is higher than 120°C
	∅12.7~∅19.05	13 t 13 t
Gas pipe	∅6.35 13 t	19 t
	∅9.52~∅19.05	19 t 25 t

- When installing insulation in places and conditions below, use the same insulation that is used for high humidity conditions.

- High humidity places such as shoreline, hot spring, near lake or river, and ridge (when the part of the building is covered by earth and sand.)

• Restaurant ceiling, sauna, swimming pool etc.
• The ceiling frequently exposed to moisture and cooling is not covered.
• e.g. The pipe installed at a corridor of a dormitory and studio or near an exit that opens and closes frequently.
• The place where the pipe is installed is highly humid due to the lack of ventilation system.

Step 13 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 metres 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.

Carbon plastic Steel core Terminal M4 To grounding screw PVC-insulated green/yellow wire 50 cm 30 cm

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 mechanical 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.

Step 14 Performing final check and trial operation

1 Check the power supply between the outdoor unit and the auxiliary circuit breaker.

• 1 phase power supply : L, N
• 3 phase power supply : R, S, T, N

2 Check the indoor unit.

a Check that you have connected the power and communication cables correctly. (If the power cable and communication cables one mixed up or connected incorrectly, the PCB will be damaged.)
b Check that the thermistor sensor, drain pump/hose, and display are connected correctly.

3 Press K1 or K2 on the outdoor unit PCB to run the test mode and stop.

Key	Push type Mode		Display
			SEG 1	SEG 2	SEG 3	SEG 4
K1 Short	1st	Heating test mode	F	I	B	B
	2nd	Defrost test mode^x	F	3	B	B
	3rd Stop		B	B	B	B
K2 Short	1st	Cooling test	F	2	B	B
	2nd	Inverter check	F	4	B	B
	3rd	Pump down	F	6	B	B
	4th Stop		B	B	B	B
K3 Short 1st		ResetRelease Eco mode	B	B	B	B

※ Defrost test mode

Condition 1: The outdoor temperature is below 10^ C.

Condition 2: All the temperature conditions should meet the defrost conditions.

8.8 8.8 R1 R2 R3 R4

4 After 12 minutes operation check discharged air temperature of indoor unit

• Cooling mode (indoor unit check) → Inlet air temp.
• Outlet air temp.: From 10°C to 12°C
• Heating mode (indoor unit check) → Outlet air temp. - Inlet air temp.: From 11°C to 14°C
• In heating mode, the indoor fan motor can remain off to avoid cold air blown into air-conditioned space.

5 How to reset the power supply of the outdoor unit and deactivate the eco mode (standby mode):

• Outdoor unit types A, B : Refer to Outdoor unit dimensions on page 8.
• Press K3 button over 1 sec to reset the power supply of the outdoor unit and deactivate the eco mode (standby mode).

※ Eco mode : Standby for minimizing power consumption

6 View mode: When the K4 switch is pressed, you can see information about our system state as below.

K4 short push	Display contents SEG1	SEG2 SEG3	SEG4 Unit
1 Order frequency 1 Hundreds digit Tens digit Units digit Hz
2 Current frequency 2 Hundreds digit Tens digit Units digit Hz
3	The number of preset indoor units	3 Hundreds digit Tens digit Units digit EA
4	Ambient temperature sensor	4 + / - Tens digit Units digit °C
5	Compressor discharge sensor	5 Hundreds digit Tens digit Units digit			°C
6	Eva Sensor	6	+ / -	Tens digit	Units digit	°C
7	Condensor sensor	7	+ / -	Tens digit	Units digit	°C
8	Current	8	Tens digit Units digit	The first place of decimals	A
9	Outdoor fan RPM	9	Thousands digit	Hundreds digit	Tens digit	rpm
10	Target discharge temperature	A Hundreds digit Tens digit Units digit			°C
11	EEV	B	Hundreds digit	Tens digit	Units digit	step
12	The capacity sum of indoor units	C	Tens digit	Unit digit	The first place of decimals	kW
13	Protective control D		0: Cooling1: Heating	Protective control0: No Protective control1: Freezing2: Non-stop defrosting3: Over-load4: Discharge5: Total electric current	Frequency status0: Normal1: Hold2: Down3: Up_limit4: Down_limit	-
14 IPM temperature E Hundreds digit Tens digit Units digit
15	The number of connected indoor units	F	0	Tens digit Units digit EA

		Display contents	SEG1 SEG2	SEG3	SEG4
K4 long push	-	Main micom version	Year (Dec)	Month (Hex)	Date (Tens digit)
	After short push 1	Inverter micom version	Year (Dec)	Month (Hex)	Date (Tens digit)
	After short push 1	E2P version	Year (Dec)	Month (Hex)	Date (Tens digit)
	After short push 1	Page 1 - AUTOPage 2 - (SEG1,2 - Indoor : "A","0") (SEG3,4 - Address : ex)00 )
	After short push 1	Page 1 - MANUPage 2 - (SEG1,2 - Indoor : "A","0") (SEG3,4 - Address : ex)00 )

- Long push K4 (Main micom ver.) short push 1 more (Inv. micom ver.) short push 1 more (E2P. ver.)

Installation Procedure

7 Setting outdoor unit option switch and address manually

a Setting the 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 K2 switch to adjust the value of the Seg 3, Seg 4 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
Channel address	Main 0	0		A	U	Automatic setting (Factory default)
				00~15		Manual setting
Snow accumulation prevention control	Main 0	1		0	0	Disabled (Factory default)
				0 1	Enabled
Step for Silence mode	Main 0	2		0	0	Disabled (Factory default)
				0 1	Step1
				0 2	Step2
				0 3	Step3
Type of Silence mode	Main 0	3		0	0	Automatic Silence mode (Factory default)
				0	1	Manual Silence mode

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.

Pumping down refrigerant

WARNING

- After installing the product, be sure to perform leak tests on the piping connections. After pumping down refrigerant to inspect or relocate the outdoor unit, be sure to stop the compressor and then remove the connected pipes.

- Do not operate the compressor while a valve is open due to refrigerant leakage from a pipe or an unconnected or incorrectly connected pipe. Failure to do so may cause air to flow into the compressor and too a high pressure to develop inside the refrigerant circuit, leading to an explosion or product malfunction.

Pump-down is an operation intended to collect all the system refrigerant in the outdoor unit. This operation must be carried out before disconnecting the refrigerant pipe in order to avoid refrigerant loss to the atmosphere.

1 Turn the system on in cooling with fan operating at high velocity and then let the compressor run for more than 5 minutes. (Compressor will immediately start, provided 3 minutes have elapsed since the last stop.)
2 Release the valve caps on High and Low pressure side.
3 Use L-wrench to close the valve on the high pressure side.
4 After approximately 2 minute, close the valve on the low pressure side.
5 Stop operation of the air conditioner by pressing the (Power) button on the indoor unit or remote control.
6 Disconnect the pipes.

B(liquid) A(Gas)

Relocating the indoor and outdoor units

1 Pump down refrigerant. See Pumping down refrigerant on page 31.
2 Remove the power cord.
3 Disconnect the assembly cable from the indoor and outdoor units.
4 Remove the flare nuts connecting the indoor units and the pipes. At this time, cover the pipes of the indoor unit and the other pipes using a cap or vinyl plug to avoid foreign material entering.
5 Disconnect the pipes connected to the outdoor units. At this time, cover the valve of the outdoor units and the other pipes using a cap or vinyl plug to avoid foreign material entering.
Note: Make sure you do not bend the connection pipes in the middle and store together with the cables.
6 Move the indoor and outdoor units to a new location.
7 Remove the mounting plate for the indoor unit and move it to a new location.

Using the stop valve

Opening the stop valve

1 Open the cap and turn the stop valve anticlockwise by using a hexagonal wrench.
2 Turn it until the axis is stopped.

Tightening torque for charging port cap (Refer to the table) Charging Core R-22 : Thread of the screw - 7/16-20UNF R-410A/R-32 : Thread of the screw - 1/2-20UNF Spindle Tightening torque for body cap (Refer to the table)

3 Tighten the cap securely.

Outer Diameter (mm)	Tightening torque
	Body cap (N·m)	Charging port cap (N·m)
∅6.35	20 to 25	10 to 12
∅9.52	20 to 25
∅12.70	25 to 30
∅15.88	30 to 35
Over ∅19.05	35 to 40

(1 N·m=10 kgf·cm)

NOTE

• Do not apply excessive force to the stop valve and always use special instruments. Otherwise, the stopping box can be damaged and the back sheet can leaks.
• If the watertight sheet leaks, turn the axis back by half, tighten the stopping box, then check the leakage again. If there is no leakage any more, tighten the axis entirely.

Closing the stop valve

1 Remove the cap.
2 Turn the stop valve clockwise by using a hexagonal wrench.
3 Tighten the axis until the valve reached the sealing point.
4 Tighten the cap securely.

CAUTION

• When you use the service port, always use a charging hose, too.
• Check the leakage of refrigerant gas after tightening the cap.
• Must use a spanner and wrench when you open/tighten the stop valve.

Performing the gas leak tests for repair

In case of repair of the refrigerant circuit, the following procedure must be kept to consider flammability.

1 Remove the refrigerant.
2 Purge the refrigerant circuit with inert gas.
3 Perform evacuation.
4 Purge the circuit again with inert gas.
5 Open the circuit.
6 Perform repair work.
7 Charge the system with refrigerant.
8 Flush the system with nitrogen blowing for safety.
9 Repeat the previous steps several times until no refrigerant is within the system.

CAUTION

• Compressed air or oxygen shall not be used.
• Flush the system with nitrogen blowing, fill the refrigerant until the working pressure is reached, ventilate to atmosphere, and then pull down to a vacuum state.
• For the final nitrogen blowing charge, the system shall be ventilated down to atmospheric pressure.
• The procedure is absolutely vital in case of brazing on the pipings.
• Make sure that the outlet of the vacuum pump is not closed to any ignition sources and there is ventilation available.
• Do not apply any permanent inductive or capacitance loads to the circuit without ensuring that this will not exceed the permissible voltage and current permitted for the air conditioner.

Decommissioning

The following requirements must be fulfilled before and while taking the decommissioning procedure:

• Before decommissioning, the worker shall be familiar with the product details.
  • The entire refrigerant shall be recovered safely.
• Before starting the process, oil and refrigerant samples shall be taken just in case analysis is required for reuse.
• Before starting the process, power supply must be available.

1 Be familiar with the equipment details.
2 Isolate the system electrically.
3 Before starting the process, make sure that:
- Any mechanical equipment is available for handling refrigerant cylinders.
- All PPE (personal protective equipment) is available for servicing.
- The recovery process shall be supervised by a competent person.

- The recovery equipment and cylinders comply with the standards.

4 Lower the refrigeration system, if possible.

5 If vacuuming is not possible, make a manifold so that refrigerant can be easily removed from the parts of the system.

6 Make sure that the cylinders are placed on the scales before recovery.

7 Run the recovery system in accordance with the manufacturer's instructions.

8 Do not overcharge the cylinders. (No more than 80%)

9 Be sure to keep the cylinder within the maximum working pressure, even temporarily.

10 After charging, make sure that the cylinders and the equipment are promptly removed from the site and all isolation valves are closed.

11 Recovered refrigerant shall not be charged into other refrigeration system unless it is cleaned and checked.

Troubleshooting

The table below list the self-diagnostic routines. For some of error codes, you must contact an authorized service centre.

If an error occurs during the operation, it is displayed on the outdoor unit PCB LED, both MAIN PCB and INVERTER PCB.

No.	Error Code	Meaning Remarks
1 E	108	Error due to duplicated communication address Check on repeated indoor unit main address
2 E	121	Error on room temperature sensor of indoor unit (Short or Open) Indoor unit EVA_IN Thermistor Open/Short
3 E	122	Error on EVA IN sensor of indoor unit (Short or Open) Indoor unit EVA_IN Thermistor Open/Short
4 E	123	Error on EVA OUT sensor of indoor unit (Short or Open) Indoor unit EVA_IN Thermistor Open/Short
5 E	153	Error on float switch (2nd detection) Indoor unit Float Switch Open/Short Drain Pump operation Check
6 E	154	Fan error Check on indoor unit indoor Fan operation
7 E	198	thermal fuse of indoor unit (Open) Thermal Fuse Open Check of indoor unit Terminal Block
8 E	201	Communication error between the indoor unit and outdoor unit (Pre-tracking failure or when the actual number of indoor units are different from the indoor unit quantity setting on the outdoor unit)Error due to communication tracking failure after initial power is supplied (The error occurs regardless of the number of units.)	Check indoor quantity setting in outdoor
9 E	202	Communication error between indoor unit and outdoor unit (When there is no response from indoor units after tracking is completed)	Check electrical connection and setting between indoor unit and outdoor unit
10 E	203	Communication error between the outdoor unit and main micom (For PF #4 to #6 controllers, error will be determined from the time when the compressor is turned on.)	Check electrical connection and setting between outdoor unit MAIN PBA - INVERTER PBA
11 E	221	Error on outdoor temperature sensor (Short or Open) Check Outdoor sensor Open / Short
12 E	231	Error on outdoor COND OUT sensor (Short or Open) Check Cond-Out sensor Open / Short
13 E	251	Error on discharge temperature sensor of compressor 1 (Short or Open)	Check Discharge sensor Open / Short
14 E	320	Error on OLP sensor (Short or Open) Check OLP sensor Open / Short
15 E	403	Compressor down due to freeze protection control Check Outdoor Cond.
16 E	404	stop due to overload protection control Check Comp. when t starts
17 E	416	stop due to discharge temperature
18 E	422	detected on high pressure pipe	1. Check if the service valve is open2. Check for refrigerant leakage (pipe connections, heat exchanger) and charge refrigerant if necessary3. Check if there's any blockage on the refrigerant cycle (indoor unit/outdoor unit)4. Check if additional refrigerant has been added after pipe extension
19 E	425	phase or open phase Check whether 3 phase is reversed or opened.
20 E	440	Heating operation restricted at outdoor temperature over Theat_high value (default:30°C)	1. Check the range of temperature limited for heating operation2. Check the outdoor temperature sensor
21 E	441	Cooling operation restricted at outdoor temperature below Tcool_low value (default:0°C)	1. Check the range of temperature limited for cooling operation2. Check the outdoor temperature sensor
22	E458	Fan speed error FAN1 ERROR
23	E461	Error due to operation failure of inverter compressor -
24	E462	System stop due to full current control -
25	E463	Over current trip / PFC over current error Check OLP sensor
26	E464	IPM Over Current(O.C)	1. Check if the service valve is open2. Check the state of refrigerant3. Check if connecting wire and the pipe are OK4. Check the compressor
27	E465	Comp. Over load error -
28	E466	DC-Link voltage under/over error Check AC Power and DC Link Voltage
29	E467	Error due to abnormal rotation of the compressor or unconnected wire of compressor	Check Comp wire
30	E468	Error on current sensor (Short or Open) Check Outdoor Inverter PBA.
31	E469	Error on DC-Link voltage sensor (Short or Open) -
32	E470	Outdoor unit EEPROM Read/Write error (Option) Check Outdoor EEPROM Data
33	E471	Outdoor unit EEPROM Read/Write error (H/W) Check Outdoor EEPROM PBA
34	E474	Error on IPM Heat Sink sensor of inverter 1 (Short or Open)	Check Outdoor Inverter PBA.
35	E475	Error on inverter fan 2 FAN2 ERROR
36	E483	Overvoltage of H/W detect DC link Check AC Power
37	E484	PFC Overload (Over current) Error Check Outdoor Inverter PBA.
38	E485	Error on input current sensor of inverter 1 (Short or Open) Check Outdoor EEPROM PBA
39	E488	Inverter input voltage sensor error Check Outdoor Inverter PBA
40	E500	IPM over heat error on inverter 1 Check Outdoor Inverter PBA.
41	E508	Smart install is not installed -
42	E554	Gas leak detected Check the refrigerant
43	E556	Error due to mismatching capacity of indoor and outdoor unit	Check the indoor and outdoor unit capacity
44	E557	DPM remote controller option error Check the indoor option code
45	E563	Error due to mismatching indoor and outdoor unit	Check the outdoor EEPROM data and indoor option code
46	E590	Inverter EEPROM Checksum error -