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Air conditioner
Installation manual
AJ***NCJ2EG
• Thank you for purchasing this Samsung air conditioner.
• Before operating this unit, please read this manual carefully and retain it for future
reference.
DB68-07383A-00

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Summary of Contents for Samsung AJ NCJ2EG Series

  • Page 1 Air conditioner Installation manual AJ***NCJ2EG • Thank you for purchasing this Samsung air conditioner. • Before operating this unit, please read this manual carefully and retain it for future reference. DB68-07383A-00...
  • Page 2: Table Of Contents

    Step 15 Optional: Setting to Cool or Heat only mode Step 16 Optional: Power improvement mode Extra procedures Pumping down refrigerant Relocating the indoor and outdoor units Using the stop valve Appendix Troubleshooting For information on Samsung’s environmental commitments and product specific regulatory obligations e.g. REACH visit: samsung.com/uk/aboutsamsung/samsungelectronics/corporatecitizenship/data_corner.html English...
  • Page 3: Safety Information

    • This manual explains how to install an indoor unit with or mental capabilities, or lack of experience and a split system with two SAMSUNG units. The use of knowledge, unless they have been given supervision other types of units with different control systems may or instruction concerning use of the appliance by a damage the units and invalidate the warranty.
  • Page 4: Installing The Unit

    Safety Information • For use in Europe: This appliance can be used by pressure increase to result in rupture or injury. children aged from 8 years and above and persons • Do not cut or burn the refrigerant container or pipings. with reduced physical, sensory or mental capabilities •...
  • Page 5: Preparation Of Fire Extinguisher

    ‐ Do not remove the fuses with power on. • Replace components only with parts specified by Samsung. Other parts may result in the ignition of ‐ Do not disconnect the power plug from the wall refrigerant in the atmosphere from a leak.
  • Page 6: Labelling

    Safety Information refrigerant shall be recovered from the product or • The recovered refrigerant shall be returned to the isolated (e.g. using shut-off valves). It shall not be supplier in the correct recovery cylinders with the directly released to the environment. Oxygen free Waste Transfer Note attached.
  • Page 7: Power Supply Line, Fuse Or Circuit Breaker

    Installation Procedure Power supply line, fuse or circuit breaker Step 1 Choosing the installation location WARNING Installation location requirements • Always make sure that the power supply is compliant • The outdoor unit shall be installed in an open space with current safety standards.
  • Page 8 Stereo Computer etc Outdoor Unit the outdoor unit for exhausted air to ventilate. 200 mm Air Guide Duct (This product is not provided by Samsung) Outdoor Unit • Install the unit at a height where its base can be firmly Protection wall Sea breeze fixed in place.
  • Page 9 Minimum clearances for the outdoor unit When installing more than 1 outdoor unit (Unit: mm) When installing 1 outdoor unit 1500 3000 3000 (Unit: mm) or more or more or more or more or more or more or more 2000 or 300 or 600 or more...
  • Page 10: Step 2 Checking And Preparing Accessories And Tools

    Installation Procedure Step 2 Checking and preparing Step 3 Fixing the outdoor unit in place accessories and tools Install the outdoor unit on a rigid and stable base to prevent disturbance from any noise caused by vibration. 3-wire 2-wire Power Cable (option) Assembly Cable (option) When installing the unit at a height or in a location exposed to strong winds, fix the unit securely to a support...
  • Page 11: Step 4 Connecting The Power Cables, Communication Cable, And Controllers

    Step 4 Connecting the power cables, Optional: Fixing the outdoor unit to a wall with a rack communication cable, and controllers You must connect the following three electrical cables to Designed to cut off residual vibration from the outdoor unit: outdoor unit to rack.
  • Page 12 Installation Procedure Conncting the cables to the outdoor unit AJ040/050NCJ2EG A-unit B-unit Indoor unit 1(L) 2(N) 1(L) 2(N) F1 F2 F1 F2 Assembly cable Earth Earth terminal terminal F1 F2 F1 F2 Earth Earth terminal terminal Main Power F1 F2 Supply cable Earth Power cable to indoor units...
  • Page 13 Tightening power terminal • Connect the cables to the terminal board using the compressed ring terminal. • Use rated cables only. • Connect the cables with driver and wrench that can apply the rated torque to the screws. • Make sure that appropriate tightening torque is applied for cable connection. If the terminal is loose, arc heat may occur and cause fire and if the terminal is connected too firmly, terminal may get damaged.
  • Page 14 Installation Procedure DC 12V supply DC 12V (Blue) R1 R2 Outdoor unit HUB PCB Transmitter MAIN PCB F1 F2 Terminal Block in the outdoor unit AJ040NCJ2EG AJ050NCJ2EG 1(L) 2(N) 1(L) 2(N) English...
  • Page 15 Outdoor-to-indoor power terminal specifications • Connect the cables to the terminal board using the compressed ring terminal. • Cover a solderless ring terminal and a connector part of the power cable and then connect it. Silver solder Nominal Nominal dimensions dimensions Standard Standard...
  • Page 16: Step 5 Optional: Extending The Power Cable

    Installation Procedure Step 5 Optional: Extending the power Outdoor-to-indoor power and communication cables specifications cable 1 Prepare the following tools. Indoor power supply Power supply Max/Min (V) Indoor power cable Tools Spec Shape 1.5 mm² ↑ , 3 wires 1Φ, 220-240V, 50 Hz ±10% Communication cable Crimping pliers...
  • Page 17 Method 2 Method 1 7 After tube contraction work is completed, wrap it with the insulation tape to finish. Connection sleeve Connection sleeve Insulation tape 4 Using a crimping tool, compress the two points and flip CAUTION it over and compress another two points in the same location.
  • Page 18: Step 6 Connecting The Refrigerant Pipe

    Installation Procedure Step 6 Connecting the refrigerant pipe • 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. ◆ AJ040/050NCJ2EG • Minimum installation height of indoor unit is 0.6 m for 1 Piping outside diameter floor mounted, 1.8 m for wall, 2.2 m for ceiling.
  • Page 19: Step 7 Optional: Cutting And Flaring The Pipes

    Step 7 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°...
  • Page 20: Step 8 Connecting Up And Removing Air In The Circuit

    Installation Procedure • If the pipes require brazing ensure that OFN(Oxygen CAUTION Free Nitrogen) is flowing through the system. • Make the electrical connection and leave the system • Nitrogen blowing pressure range is 0.02 to 0.05 MPa. into “stand by mode”. Do not turn on the system! This •...
  • Page 21: Step 9 Performing The Gas Leak Test

    Step 9 Performing the gas leak test 4 Open the valve of the low pressure side of manifold gauge counter clockwise. Before completing the installation (insulation of the 5 Purge the air from the system using vacuum pump for cables, hose and piping and fixing of the indoor unit to the about 30 minutes.
  • Page 22: Step 10 Adding Refrigent (R-32)

    Installation Procedure Step 10 Adding refrigent (R-32) Please fill in the following with indelible ink on the refrigerant charge label supplied with this product and on this manual. Precautions on adding the R-32 refrigerant • : The factory refrigerant charge of the product. •...
  • Page 23: Step 11 Connecting The Drain Hose To The Outdoor Unit

    Calculating the quantity of refrigerant to add Charging the refrigerant under conditions of liquid by using a liquid pipe Do not add refrigerant regardless of installation conditions. R-32 is a mixed type of refrigerant. It is necessary for recharging under conditions of liquid. When recharging In both cases, when you use a pipe longer or shorter than refrigerant from the refrigerant cylinder to the the length specified in the piping codes and standard, do...
  • Page 24: Step 12 Checking The Earthing

    Installation Procedure 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.
  • Page 25 1 Turn on the outdoor unit, and then check whether Troubleshooting on page 33 and take corrective the LED indications are displayed as shown in the actions, and then take all steps again starting from 1. following table: Display Error Specification (Refer to the Troubleshooting •...
  • Page 26 Installation Procedure Setting the indoor unit addresses manually Setting Option (AR**********) 1 Turn off the switch 1 of the DIP switches on the outdoor unit HUB PCB, and then turn on the outdoor <AR****WSA***> <AR**NXF*****> unit. Entering mode Option for setting setting mode option Mode button...
  • Page 27 Setting Option 1 Remove batteries from the remote controller 2 Insert batteries and enter the option setting mode while pressing  button and  button. 3 Each time you press  button, 7-seg on left side is increased by “1” and each time you press  button, 7-seg on right side is increased by “1”...
  • Page 28 Installation Procedure Operation Indication Step 4 Press  button to be changed to DRY mode in the ON status. 1 Press  button to enter SEG6. 2 Press  button to enter SEG8. Step 5 Press  button to be changed to FAN mode in the ON status. 1 Press ...
  • Page 29 Operation Indication Step 9 Press  button to be changed to DRY mode in the OFF status. 1 Press  button to enter SEG18 value. 2 Press  button to enter SEG20 value. Step 10 Press  button to be changed to FAN mode in OFF status 1 Press ...
  • Page 30 Installation Procedure Setting an indoor unit address (MAIN/RMC) 1 Check whether power is supplied or not. Indoor Unit ‐ When the indoor unit is not plugged in, there 1(L) should be additional power supply in the 2(N) indoor unit. 2 The panel(display ) should be connected to an indoor unit to receive option. 3 Before installing the indoor unit, assign an address to the indoor unit according to the air conditioning system plan.
  • Page 31 Setting an indoor unit installation option (suitable for the condition of each installation location) 1 Check whether power is supplied or not. Indoor Unit ‐ When the indoor unit is not plugged in, there 1(L) should be additional power supply in the 2(N) indoor unit.
  • Page 32: Step 14 Cool And Heat Modes Operation Test

    Installation Procedure Step 14 Cool and Heat modes Step 15 Optional: Setting to Cool or operation test Heat only mode After installing the outdoor and indoor units, test the Cool This function enables the indoor units connected to the and Heat modes. outdoor unit to operate in a specific mode.
  • Page 33 Step 16 Optional: Power improvement mode The power improvement mode has the following power reduction effects. • Reduced power at Thermo off ‐ When the air conditioner operates in Cool, Dry and Auto mode, if Thermo off is reached during cooling, the fan and display of the indoor unit are turned off after 5 minutes.
  • Page 34: Extra Procedures

    Extra Procedures Pumping down refrigerant Relocating the indoor and outdoor units WARNING 1 Pump down refrigerant. See Pumping down refrigerant on page 34. • After installing the product, be sure to perform leak 2 Remove the power cord. tests on the piping connections. After pumping down 3 Disconnect the assembly cable from the indoor and refrigerant to inspect or relocate the outdoor unit, outdoor units.
  • Page 35: Using The Stop Valve

    Using the stop valve Closing the stop valve 1 Remove the cap. Opening the stop valve 2 Turn the stop valve clockwise by using a hexagonal wrench. 1 Open the cap and turn the stop valve anticlockwise by 3 Tighten the axis until the valve reached the sealing using a hexagonal wrench.
  • Page 36: Appendix

    Appendix Troubleshooting The table below list the self-diagnostic routines. For some of error, you must contact an authorized service center. If an error occurs during the operation, it is displayed on the outdoor unit HUB PCB. ‐ The error codes in the list are for reference only. They are not displayed on the outdoor unit HUB PCB.
  • Page 37 Display (B part) Error Explanation Remark Code Green Yellow Outdoor unit freezing - Safety control Check pipe lenght, indoor unit filter, refrigerant leakage/ E401 (Compressor stop) charge and service port Outdoor unit overload - Safety control E404 Check pipe lenght, refrigerant leakage/charge (Compressor stop) High temperature(over 30°C) or low E440...

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