Samsung Air Conditioner Installation Manual

Introduction

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

Document ID: DB68-00000A-00

Version: IM_CAC R32 Outdoor_AZ_EN_

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

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: Low burning velocity material (This appliance is filled with R-32.)

The user and installer guides should be read carefully.

The service guide should be read carefully.

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.
• Samsung 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.
• The work area should be checked to ensure that there are no flammable hazards or ignition risks. The "No Smoking" sign shall be attached.
• Under no circumstances shall potential sources of ignition be used while in detection of leakage.
• Make sure that the seals or sealing materials have not degraded.
• Safe parts are the ones with which the worker can work in a flammable atmosphere. Other parts may result in ignition due to leakage.
• Replace components only with parts specified by Samsung. Other parts may result in the ignition of refrigerant in the atmosphere from a leak.

Area ventilation

• Make sure that the work area is well ventilated before performing a hot work.
• Ventilation shall be made even during the work.
• The ventilation should safely disperse any released gases and preferably expel them into the atmosphere.
• Ventilation shall be made even during the work.

Leakage detection methods

• The leakage detector shall be calibrated in a refrigerant-free area.
• Make sure that the detector is not a potential source of ignition.
• The leakage detector shall be set to the LFL (lower flammability limit).
• The use of detergents containing chlorine shall be avoided for cleaning because the chlorine may react with the refrigerant and corrode the pipings.
• If leakage is suspected, naked flames shall be removed.
• If a leakage is found while in brazing, the entire refrigerant shall be recovered from the product or isolated (e.g. using shut-off valves). It shall not be directly released to the environment. Oxygen free nitrogen (OFN) shall be used for purging the system before and during the brazing process.
• The work area shall be checked with an appropriate refrigerant detector before and during work.
• Ensure that the leakage detector is appropriate for use with flammable refrigerants.

Preparation of fire extinguisher

• If a hot work is to be done, an appropriate fire extinguishing equipment should have been available.
• A dry powder or CO2 fire extinguisher shall be equipped near the charging area.

Ignition sources free

• Make sure to store the units in a place without continuously operating ignition sources (for example, open flames, an operating gas appliance or an operating electric heater).
• The service engineers shall not use any ignition sources with the risk of fire or explosion.
• Potential ignition sources shall be kept away from the work area where the flammable refrigerant can possibly be released to the surrounding.

Labelling

• The parts shall be labelled to ensure that they have been decommissioned and emptied of refrigerant.
• The labels shall be dated.
• Make sure that the labels are affixed on the system to notify it contains flammable refrigerant.

Recovery

• When removing refrigerant from the system for servicing or decommissioning, it is recommended to remove the entire refrigerant.
• When transferring refrigerant into cylinders, make sure that only the refrigerant recovery cylinders are used.
• All cylinders used for the recovered refrigerant shall be labelled.
• Cylinders shall be equipped with pressure relief valves and shut-off valves in a proper order.
• Empty recovery cylinders shall be evacuated and cooled before recovery.
• The recovery system shall operate normally according to the specified instructions and shall be suitable for refrigerant recovery.
• In addition, the calibration scales shall operate normally.
• Hoses shall be equipped with leak-free disconnect couplings.
• Before starting the recovery, check for the status of the recovery system and sealing state. Consult with the manufacturer if suspected.
• The recovered refrigerant shall be returned to the supplier in the correct recovery cylinders with the Waste Transfer Note attached.
• Do not mix refrigerants in the recovery units or cylinders.
• If compressors or compressor oils are to be removed, make sure that they have been evacuated to the acceptable level to ensure that flammable refrigerant does not remain in the lubricant.
• The evacuation process shall be performed before sending the compressor to the suppliers.
• Only the electrical heating to the compressor body is allowed to accelerate the process.
• Oil shall be drained safely from the system.

WARNING:

• For installation with handling the refrigerant (R-32), use dedicated tools and piping materials. Because the pressure of the refrigerant, R-32 is approximately 1.6 times higher than that of R-22, 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.
• Never install a motor-driven equipment to prevent ignition.

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.

Installation Procedure

Step 1: Choosing the installation location

WARNING:

• If appliances contain R-32 refrigerant, then the floor area of the room in which the appliances are installed, operated and stored must be larger than the minimum floor area defined in table below A (m²).

Minimum required room area (A, m²)

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.

When installing the indoor unit, the minimum installation height from the floor is 2.5 m.

Installation location requirements

• The outdoor unit shall be installed in an open space that is always ventilated.
• The local gas regulations shall be observed.
• For installation inside a building (this applies either to indoor or outdoor units installed inside) a minimum room floor area of space conditioned is mandatory according to EN378-1:2017 (see the reference table into the indoor unit installation manual).
• To handle, purge, and dispose the refrigerant, or break into the refrigerant circuit, the worker should have a certificate from an industry-accredited authority.
• Do not install the air conditioner in following areas:
  • The place where there is mineral oil or arsenic acid. Resin parts flame and the accessories may drop or water may leak. The capacity of the heat exchanger may reduce or the air conditioner may be out of order.
  • The place where corrosive gas such as sulfurous acid gas generates from the vent pipe or air outlet. The copper pipe or connection pipe may corrode and refrigerant may leak.
  • The place where there is a machine that generates electromagnetic waves. The air conditioner may not operate normally due to control system.
  • The place where there is a danger of existing combustible gas, carbon fiber or flammable dust.
  • The place where animals may urinate on the product. Ammonia may be generated.
  • The place where thinner or gasoline is handled. Gas may leak and it may cause fire.
  • The place where is close to heat sources.
• Do not use the indoor unit for preservation of food items, plants, equipment, and art works. This may cause deterioration of their quality.
• Do not install the indoor unit if it has any drainage problem.
• 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.

Diagram Description: Shows a sea with an outdoor unit. If installing at the seaside, construct a protection wall around the unit to block sea breeze. The wall should be 1.5 times larger than the unit, with at least 700 mm space for exhausted air ventilation.

Diagram Description: Shows clearances around the outdoor unit: 1m or more on sides, 1.5m or more in front/back. Also shows a protection wall with 700mm clearance. An air guide duct is mentioned as not provided by Samsung.

• 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:

• 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, an additional protective coating (third party) may be required; 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.

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 heat exchanger and base plate of the outdoor unit regularly from any collected sand and salt.
• Touch up the additional protective coating (third party) if needed, at least once in a year or according the third party's product requirements.
• 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

Diagram Description: Shows dimensions for outdoor units Type A (AC018DXADKG), Type B (AC024DXADKG), Type C (AC036DXADKG), Type D (AC048DXADKG), Type E (AC060DXADKG). Includes overall width, depth, and height, with specific measurements for different parts.

Minimum clearances for the outdoor unit

Diagram Description: Shows minimum clearance requirements for installing one or more outdoor units. For a single unit, minimum clearances are 300mm on sides, 600mm in front, and 1500mm in rear. For multiple units, larger clearances are specified.

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.

Diagram Description: Shows the outdoor unit base with anchor bolt holes and dimensions. Indicates anchor bolts should be 20mm or higher from the base surface.

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.

Diagram Description: Illustrates how to attach wire ropes to the outdoor unit for lifting, with a cloth for protection.

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.

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

[Bar type louver] [Rain resistance louver]

Diagram Description: Compares a bar type louver (recommended) with a rain resistance louver (not recommended).

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

Diagram Description: Shows dimensions for fixing the outdoor unit, including anchor bolt hole positions and clearances.

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.

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.
• 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)

Diagram Description: Shows a wall-mounted rack for the outdoor unit, with details on anchor bolts, vibration-damping rubber, and grommets for noise reduction.

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

Diagram Description: Shows wiring examples for a single-phase system using an Earth Leakage Circuit Breaker (ELCB) and a Miniature Circuit Breaker (MCB).

CAUTION:

• Make sure to install an ELCB (RCD or RCCB) or ELB and MCB combination, according local regulations.
• For the product that uses the R-32 refrigerant, be cautious not to generate any sparks near the product.

Connecting the main power cable

Diagram Description: Shows a wiring diagram for connecting the main power cable using an MCB and ELB.

Diagram Description: Shows how to connect the main power cable, outdoor-to-indoor power cable, and communication cable to the outdoor unit, including cable clamps and ties.

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 cables and the communication cable 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. If the distance of 50mm or more cannot be kept, a double shielded cable (FROHH2R or LiYCY type) must be used, connected to earth on a single side.

Main power terminal block specifications

Diagram Description: Shows terminal block specifications with pin assignments (L, N, F1, F2) and dimensions.

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.

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.
6. MFA represents capacity which may accept MCA.
7. Abbreviations: MCA: Min. Circuit Amps. (A), MFA: Max. Fuse Amps. (A)

Silence mode controller wiring diagram with External controller

Diagram Description: Wiring diagrams for AC018/024DXADKG and AC036/048/060DXADKG models showing connections for external controllers and non-voltage contacts.

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

Diagram Description: Wiring diagrams for AC018DXADKG, AC024DXADKG, and AC036/048/060DXADKG models showing connections for main power, outdoor-to-indoor power, and communication cables, including cable clamps and ties.

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). The appearance of the unit may be different from the picture depending on the model.

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.

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)

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 knock-out piece.

Outdoor-to-indoor power and communication cables specifications

• Indoor unit : 1WAY CST Type (AC***DN1***) 360 CST Type (AC***DN6***) 4WAY CST Type (AC***DN4***)
  • Indoor power supply: 1, 220V, 60Hz ±10%
  • Indoor power cable: 0.75 mm², 3 wires
  • Communication cable: 0.75 mm², 2 wires
• Indoor unit : CEILING Type (AC***DNC***)
  • Indoor power supply: 1, 220V, 60Hz ±10%
  • Indoor power cable: 1.5 mm², 3 wires
  • Communication cable: 0.75 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 or LiYCY type.

Step 4: Optional: Extending the power cable

1 Prepare the following tools.

Diagram Description: Lists required tools: Crimping pliers, Connection sleeve (20 x Ø6.5), Insulation tape (Width 19 mm), Contraction tube (70 x Ø8.0).

2 As shown in the figure, peel off the shields from the rubber and wire of the power cable.

Diagram Description: Shows a power cable with pre-installed tube, indicating where to peel off shields (20mm) and the total length (180mm).

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.

Diagram Description: Illustrates Method 1 and Method 2 for inserting core wires into a 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.

Diagram Description: Shows the crimping process, indicating 4 compression points and a compression dimension of 8.0 mm.

Diagram Description: Shows the result of Method 1 and Method 2 after compression, with a 5mm margin.

5 Apply heat to the contraction tube to contract it.

Diagram Description: Shows Method 1 and Method 2 after applying heat to the contraction tube.

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.

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

Diagram Description: Shows Method 1 and Method 2 after wrapping with insulation tape, indicating 40mm and 35mm lengths respectively.

7 After tube contraction work is completed, wrap it with the insulation tape to finish. Three or more layers of insulation are required.

Diagram Description: Shows the final insulated connection for Method 1 and Method 2.

Step 5: Connecting the refrigerant pipe

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

Diagram Description: Shows a diagram illustrating L1 (main pipe length), h1 (height difference), and 'n' (number of indoor units).

Temper grade and minimum thickness of the refrigerant pipe

The material specification (thickness) of the refrigerant pipes must be in accordance with EU and/or local legislation and standards.

CAUTION: Be sure to use C1220T-1/2H (Semi-hard) pipe for more than Ø19.05 mm. If you use C1220T-O (Soft) pipe for Ø19.05 mm, the pipe may burst open, which can result in an injury.

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

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.

Diagram Description: Shows correct and incorrect pipe cuts. Correct cut is at 90°. Incorrect cuts include inclined, damaged surface, cracked, oblique, rough, and burr.

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.

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.

Diagram Description: Shows the flaring process with dimensions for outer diameter (D), depth (A), and flare length (L) for various pipe sizes.

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.

Diagram Description: Shows examples of correct and incorrect flaring.

Step 7: 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. Use Vacuum Pump as shown on the next page 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.

Torque (N m) for flare nuts

1 Nm = 10 kgfcm

Diagram Description: Shows outdoor unit with A (Gas) and B (Liquid) valves, and connection points C and D. Also shows a vacuum pump connected to the service port.

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.

Diagram Description: Shows outdoor units for AC018/024DXADKG and AC036/048/060DXADKG models with A (Gas) and B (Liquid) valves, and a vacuum pump connection.

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 1 hour. 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 183kgfcm 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 8: 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 26.

1. Check if the stop valve is closed completely.
2. Charge the refrigerant through the service port of the liquid stop valve.
3. If you have any difficulty charging the refrigerant as described in the steps above, take the following steps:
   1. Open the liquid stop valve and gas stop valve.
   2. Operate the air conditioner by pressing the K2 key on the outdoor unit PCB.
   3. After about 30 minutes, charge the refrigerant through the service port of the gas stop valve.

Diagram Description: Shows charging ports for AC018/024DXADKG and AC036/048/060DXADKG models, with connections for vacuum pump and refrigerant cylinder.

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 tCO2e 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.

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

Factory refrigerant charge of the product: [a]

Additional refrigerant amount charged in the field: [b]

Total refrigerant charge: [a + b = c]

GWP: Global Warming Potential

Calculating tCO2e : 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).

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.

Diagram Description: Shows cylinder with siphon (stand upright) and cylinder without siphon (turn upside down) for charging refrigerant.

(Unit: g)

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

Step 9: 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 from the system and create vacuum. After opening valves check for 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.

Diagram Description: Shows leak test setup for AC018/024DXADKG and AC036/048/060DXADKG models, indicating gas and liquid sides.

Step 10: 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 defrosting 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 "A" 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. If needed apply a heating cable to prevent freezing of the drain hose/ pipe.

Diagram Description: Shows drain hose connection for AC024DXADKG, AC036DXADKG, AC048DXADKG, AC018DXADKG, and AC060DXADKG models, including drain plug, drain caps, and dimensions.

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

Diagram Description: Shows drain cap (3EA) and drain plug (1EA).

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.

Diagram Description: Shows drain plug and drain cap for AC036DXADKG, AC048DXADKG, AC018DXADKG, AC060DXADKG models.

• 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 11: 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

Diagram Description: Shows an insulated pipe with NBR material, emphasizing no gap.

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.

Insulation Type (Heating/Cooling)

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

• <Geological condition>
  • 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.)
• <Operation purpose condition>
  • Restaurant ceiling, sauna, swimming pool etc.
• <Building construction condition>
  • 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 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.

Diagram Description: Shows an earthing electrode with dimensions and materials (carbon plastic, steel core, terminal M4, PVC-insulated green/yellow wire).

• 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.

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.

NOTE: If the earthing electrode is installed in an area with heavy traffic, its wire must be connected securely.

Step 13: Performing final check and trial operation

Diagram Description: Shows the Main PCB for AC018DXADKG, AC024DXADKG, AC036DXADKG, AC048DXADKG, AC060DXADKG models.

1. Check the power supply between the outdoor unit and the auxiliary circuit breaker.
   • 1 phase power supply: L, N
2. Check the indoor unit.
   1. 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.)
   2. 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.

Test Mode Operation (K1/K2 Buttons)

Defrost test mode

• Condition 1: The outdoor temperature is below 10°C.
• Condition 2: All the temperature conditions should meet the defrost conditions.

Indication on the display and action to take when an inverter fault is detected.

Auto check is not applied in this model.

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

• 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.

• For a function that is not supported, "-" is shown for SEG2, SEG3 or SEG4.

Sub-zero temperatures are expressed as a minus, instead of hundreds digit.

The temperature unit can be switched between Celsius and Fahrenheit through Setting outdoor unit option switches. (Default value is Celsius.)

If the temperature unit is set to Fahrenheit through Setting outdoor unit option switches, the value is expressed in the unit of kBtu/h.

Display contents

Long push K4 (Main micom ver.) -> short push 1 more (Inv. micom ver.) -> short push 1 more (E2P. ver.) -> short push 1 more (Automatic address) -> short push 1 more (Manual address) -> short push 1 more (Main micom ver.) ....... Long push K4 (View mode end)

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

Current restriction rate: When restriction option is set, cooling and heating performance may decrease.

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.

Extra Procedures

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 for pump down when the refrigerant circuit is open due to a refrigerant leakage or a disconnected (or incorrectly connected) pipe. Failure to do so may cause air to flow into the compressor and a too high pressure can 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.

Relocating the indoor and outdoor units

1. Pump down refrigerant. See Pumping down refrigerant on page 34.
2. Disconnect the power supply only after rendering the system powerless from the mains power.
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)

Spindle

Tightening torque for body cap (Refer to the table)

(1 Nm=10 kgfcm)

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 leak. 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.

Maintenance Procedures

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.
• Be familiar with the equipment details.
• Isolate the system electrically.
• 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.
• Lower the refrigeration system, if possible.
• If vacuuming is not possible, make a manifold so that refrigerant can be easily removed from the parts of the system.
• Make sure that the cylinders are placed on the scales before recovery.
• Run the recovery system in accordance with the manufacturer's instructions.
• Do not overcharge the cylinders. (No more than 80 %)
• Be sure to keep the cylinder within the maximum working pressure, even temporarily.
• After charging, make sure that the cylinders and the equipment are promptly removed from the site and all isolation valves are closed.
• Recovered refrigerant shall not be charged into other refrigeration system unless it is cleaned and checked.

Appendix

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.