Table of contents Table of contents 1 About the documentation About this document ..............................2 General safety precautions About the documentation .............................. 2.1.1 Meaning of warnings and symbols ........................ For the installer ................................2.2.1 General ................................2.2.2 Installation site ............................... 2.2.3 Refrigerant..............................
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Table of contents 14.1 Identification ................................... 40 14.1.1 Identification label: Indoor unit ........................40 14.2 About the indoor unit ..............................40 14.3 System layout.................................. 40 14.4 Combining units and options............................41 14.4.1 Possible options for the indoor unit....................... 41 15 Unit installation 15.1 Preparing the installation site............................
The original documentation is written in English. All other languages are translations. Technical engineering data ▪ A subset of the latest technical data is available on the regional Daikin website (publicly accessible). ▪ The full set of latest technical data is available on the Daikin Business Portal (authentication required).
General safety precautions 2 General safety precautions 2.1 About the documentation ▪ The original documentation is written in English. All other languages are translations. ▪ The precautions described in this document cover very important topics, follow them carefully. ▪ The installation of the system, and all activities described in the installation manual and in the installer reference guide MUST be performed by an authorised installer.
Improper installation or attachment of equipment or accessories could result in electrical shock, short-circuit, leaks, fire or other damage to the equipment. Only use accessories, optional equipment and spare parts made or approved by Daikin. WARNING Make sure installation, testing and applied materials comply with applicable legislation (on top of the instructions described in the Daikin documentation).
General safety precautions WARNING Provide adequate measures to prevent that the unit can be used as a shelter by small animals. Small animals that make contact with electrical parts can cause malfunctions, smoke or fire. CAUTION Do NOT touch the air inlet or aluminium fins of the unit. CAUTION ▪...
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General safety precautions NOTICE Make sure refrigerant piping installation complies with applicable legislation. In Europe, EN378 is the applicable standard. NOTICE Make sure the field piping and connections are NOT subjected to stress. WARNING During tests, NEVER pressurize the product with a pressure higher than the maximum allowable pressure (as indicated on the nameplate of the unit).
General safety precautions ▪ In case recharge is required, see the nameplate of the unit. It states the type of refrigerant and necessary amount. ▪ The unit is factory charged with refrigerant and depending on pipe sizes and pipe lengths some systems require additional charging of refrigerant. ▪...
General safety precautions 2.2.5 Water If applicable. See the installation manual or installer reference guide of your application for more information. NOTICE Make sure water quality complies with EU directive 98/83 EC. 2.2.6 Electrical DANGER: RISK OF ELECTROCUTION ▪ Turn OFF all power supply before removing the switch box cover, connecting electrical wiring or touching electrical parts.
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General safety precautions CAUTION ▪ When connecting the power supply: connect the earth cable first, before making the current-carrying connections. ▪ When disconnecting the power supply: disconnect the current-carrying cables first, before separating the earth connection. ▪ The length of the conductors between the power supply stress relief and the terminal block itself must be as such that the current-carrying wires are tautened before the earth wire is in case the power supply is pulled loose from the stress relief.
WARNING Make sure installation, servicing, maintenance, repair and applied materials follow the instructions from Daikin and, in addition, comply with applicable legislation and are performed by qualified persons only. In Europe and areas where IEC standards apply, EN/IEC 60335-2-40 is the applicable standard.
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Specific installer safety instructions Installing the ducting (see "15.2.2 Guidelines when installing the ducting" [ 52]) CAUTION ▪ Make sure the installation of the duct does NOT exceed the setting range of the external static pressure for the unit. Refer to the technical datasheet of your model for the setting range.
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Specific installer safety instructions WARNING ▪ All wiring MUST be performed by an authorised electrician and MUST comply with the applicable legislation. ▪ Make electrical connections to the fixed wiring. ▪ All components procured on-site and all electrical construction MUST comply with the applicable legislation.
User safety instructions 4 User safety instructions Always observe the following safety instructions and regulations. 4.1 General WARNING If you are NOT sure how to operate the unit, contact your installer. WARNING 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...
User safety instructions ▪ Units are marked with the following symbol: This means that electrical and electronic products may NOT be mixed with unsorted household waste. Do NOT try to dismantle the system yourself: the dismantling of the system, treatment of the refrigerant, of oil and of other parts must be done by an authorized installer and must comply with applicable legislation.
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User safety instructions CAUTION ▪ NEVER touch the internal parts of the controller. ▪ Do NOT remove the front panel. Some parts inside are dangerous to touch and appliance problems may happen. For checking and adjusting the internal parts, contact your dealer. WARNING This unit contains electrical and hot parts.
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User safety instructions WARNING Do NOT place a flammable spray bottle near the air conditioner and do NOT use sprays near the unit. Doing so may result in a fire. Maintenance and service (see "10 Maintenance and service" [ 28]) WARNING: System contains refrigerant under very high pressure.
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User safety instructions "10.5 About the refrigerant" [ 30]) About the refrigerant (see WARNING ▪ Do NOT pierce or burn refrigerant cycle parts. ▪ Do NOT use cleaning materials other than those recommended by the manufacturer. ▪ Be aware that the refrigerant inside the system is odourless.
About the system 5 About the system NOTICE The appliance shall be stored so as to prevent mechanical damage. The indoor units can be used for heating/cooling applications. WARNING Do NOT modify, disassemble, remove, reinstall or repair the unit yourself as incorrect dismantling or installation may cause an electric shock or fire.
User interface 6 User interface CAUTION ▪ NEVER touch the internal parts of the controller. ▪ Do NOT remove the front panel. Some parts inside are dangerous to touch and appliance problems may happen. For checking and adjusting the internal parts, contact your dealer.
Before operation 7 Before operation WARNING This unit contains electrical parts. WARNING Before operating the unit, be sure the installation has been carried out correctly by an installer. CAUTION It is not good for your health to expose your body to the air flow for a long time. CAUTION To avoid oxygen deficiency, ventilate the room sufficiently if equipment with burner is used together with the system.
Operation 8 Operation 8.1 Operation range Use the system in the following temperature and humidity ranges for safe and effective operation. Cooling and drying Heating Outdoor unit –5~43°C DB –20~16°C WB Indoor unit 14~24°C WB 15~27°C DB Indoor humidity ≤80% — To avoid condensation and water dripping out of the unit. If the temperature or the humidity is beyond these conditions, safety devices may be put in action and the air conditioner may not operate.
Operation Icon Operation mode Auto. In Auto mode, the indoor unit automatically switches between heating and cooling mode, as required by the setpoint. 8.2.2 Special heating operation modes Operation Description Defrost To prevent a loss of heating capacity due to frost accumulation in the outdoor unit, the system will automatically switch to defrost operation.
Energy saving and optimum operation 9 Energy saving and optimum operation CAUTION NEVER expose little children, plants or animals directly to the airflow. WARNING Do NOT place objects below the indoor and/or outdoor unit that may get wet. Otherwise condensation on the unit or refrigerant pipes, air filter dirt or drain blockage may cause dripping, and objects under the unit may get dirty or damaged.
Maintenance and service 10 Maintenance and service 10.1 Precautions for maintenance and service WARNING: System contains refrigerant under very high pressure. The system MUST be serviced by qualified persons only. NOTICE Maintenance MUST be done by an authorized installer or service agent. We recommend performing maintenance at least once a year.
Maintenance and service 10.2 Cleaning the air filter and air outlet 10.2.1 To clean the air outlet WARNING Do NOT let the indoor unit get wet. Possible consequence: Electric shock or fire. NOTICE ▪ Do NOT use gasoline, benzene, thinner polishing powder or liquid insecticide. Possible consequence: Discoloration and deformation.
Maintenance and service rear suction bottom suction 5 Confirm that 4 hangers are fixed. 6 In case of bottom suction, close the air inlet grille. 7 Turn ON the power. 8 To remove warning screens, see the reference guide of the user interface. 10.3 Maintenance before a long stop period E.g., at the end of the season.
Maintenance and service Refrigerant type: R744 (CO WARNING ▪ Do NOT pierce or burn refrigerant cycle parts. ▪ Do NOT use cleaning materials other than those recommended by the manufacturer. ▪ Be aware that the refrigerant inside the system is odourless. WARNING The refrigerant R744 (CO ) inside the unit is odourless, non-flammable and, in...
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Maintenance and service NOTICE After the refrigerant leakage is detected, the unit will send a signal at regular intervals to confirm if the CO concentration is at a safe level. Even when the CO concentration is at a safe level, do NOT resume operation before the fault is fixed and the refrigerant is refilled.
Troubleshooting 11 Troubleshooting If one of the following malfunctions occur, take the measures shown below and contact your dealer. WARNING Stop operation and shut off the power if anything unusual occurs (burning smells etc.). Leaving the unit running under such circumstances may cause breakage, electric shock or fire.
Troubleshooting Malfunction Measure The system operates but ▪ Check if air inlet or outlet of outdoor or indoor cooling or heating is unit is not blocked by obstacles. Remove any insufficient. obstacles and make sure the air can flow freely. ▪...
Troubleshooting ▪ The air conditioner does not restart immediately when the temperature setting button is returned to its former position after pushing. It does not restart immediately because one of its safety devices actuates to prevent the air conditioner from being overloaded. The air conditioner will turn on again automatically after 3 minutes.
Disposal 12 Disposal NOTICE Do NOT try to dismantle the system yourself: dismantling of the system, treatment of the refrigerant, oil and other parts MUST comply with applicable legislation. Units MUST be treated at a specialised treatment facility for reuse, recycling and recovery. FXSN50~112A2VEB Installer and user reference guide CO₂...
About the box 13 About the box 13.1 Overview: About the box This chapter describes what you have to do after the box with the indoor unit is delivered on-site. Keep the following in mind: ▪ At delivery, the unit MUST be checked for damage. Any damage MUST be reported immediately to the claims agent of the carrier.
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About the box Washers for hanger bracket Screws for duct flanges Metal clamp Sealing pads: Large (drain pipe), medium 1 (gas pipe), medium 2 (liquid pipe) Drain hose Long sealing Insulation piece: Small (liquid pipe) Insulation piece: Large (gas pipe) Tie wraps FXSN50~112A2VEB Installer and user reference guide...
About the units and options 14 About the units and options In this chapter 14.1 Identification................................... 14.1.1 Identification label: Indoor unit ..........................14.2 About the indoor unit................................14.3 System layout..................................14.4 Combining units and options..............................14.4.1 Possible options for the indoor unit ........................14.1 Identification NOTICE When installing or servicing several units at the same time, make sure NOT to switch...
About the units and options Outdoor unit Indoor unit User interface CAUTION Do NOT insert fingers, rods or other objects into the air inlet or outlet. When the fan is rotating at high speed, it will cause injury. 14.4 Combining units and options INFORMATION Certain options might not be available in your country.
Unit installation 15 Unit installation WARNING Installation shall be done by an installer, the choice of materials and installation shall comply with the applicable legislation. In Europe, EN378 is the applicable standard. WARNING ▪ Make sure to install all necessary countermeasures in case of refrigerant leakage according to standard EN378 (see "15.1.2 ...
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Unit installation ▪ In places where a mineral oil mist, spray or vapour may be present in the atmosphere. Plastic parts may deteriorate and fall off or cause water leakage. It is NOT recommended to install the unit in the following places because it may shorten the life of the unit: ▪...
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Unit installation ≥500 (mm) Minimum distance to the floor 2.7 m to avoid accidental touching 2.5 m in case the fan is covered (e.g. false ceiling, grille, …) Ceiling Floor surface Maintenance space Service space and ceiling opening size Make sure ceiling opening is big enough to ensure a sufficient clearance for maintenance and service.
Unit installation ≥460 (mm) Standard rear suction Installation with rear canvas duct and duct service opening Installation with bottom canvas duct and air inlet grill Ceiling surface Ceiling opening Air filter removal route for air filter maintenance Air inlet filter Duct service opening Interchangeable plate Canvas connection for air inlet panel (field supply)
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Unit installation Access category Location classification General Toxicity limit × Room volume No charge The charge shall restriction be assessed according to "Appropriate measures" [ 47] location I, II or III, depending on the Supervised Upper floors Toxicity limit × Room No charge location of the without...
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Unit installation Location classification Description Class II Compressors in machinery If all compressors and pressure vessels are either located in a room or open air machinery room or in the open air, the requirements for a class II location shall apply, unless the system complies with the requirements of class III.
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Unit installation Outdoor unit Stop valve on the outdoor unit Liquid piping between outdoor unit and the shut off valve Liquid piping between indoor unit and the shut off valve Gas piping between outdoor unit and the shut off valve Gas piping between indoor unit and the shut off valve Bypassing piping Safety shut off valve...
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Unit installation Example: Total refrigerant change in the system is 45 kg and room volume is 300 m . 45/300 = 0.15, which is >RCL(0.072) and <QLAV(0.18), therefore install at least 2 appropriate measures in the room. QLAV QLMV 200 250 300 350 100 150 600 650 700 750 800 850 900 950 1000 B (m³)
Unit installation ▪ Include the space above a false ceiling or partition in the volume calculation unless the false ceiling is airtight. ▪ Where an indoor unit, or any related refrigerant-containing pipework, is located in a space where the total charge exceeds the allowable charge, make special provisions to ensure at least an equivalent level of safety.
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Unit installation ▪ Suspension bolts. Use M10 suspension bolts for installation. Attach the hanger bracket to the suspension bolt. Fix it securely using a nut and washer from the upper and lower sides of the hanger bracket. 4× (mm) Nut (field supply) Washer (accessories) Hanger bracket Double nut (field supply)
Unit installation 15.2.2 Guidelines when installing the ducting CAUTION ▪ Make sure the installation of the duct does NOT exceed the setting range of the external static pressure for the unit. Refer to the technical datasheet of your model for the setting range. ▪...
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Unit installation ▪ General guidelines ▪ Connecting the drain piping to the indoor unit ▪ Checking for water leaks General guidelines ▪ Pipe length. Keep drain piping as short as possible. ▪ Pipe size. Keep the pipe size equal to or greater than that of the connecting pipe (vinyl pipe of 25 mm nominal diameter and 32 mm outer diameter).
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Unit installation To connect the drain piping to the indoor unit NOTICE Incorrect connection of the drain hose might cause leaks, and damage the installation space and surroundings. Drain outlet for maintenance Refrigerant pipes Drain pipe connection 1 Push the drain hose as far as possible over the drain pipe connection. 2 Tighten the metal clamp until the screw head is less than 4 ...
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Unit installation Drain plug Phillips screwdriver To check for water leaks The procedure differs depending on whether installation of the system is already completed. When installation of the system is not yet completed, temporarily connect the user interface and power supply to the unit. When installation of the system is not yet completed 1 Temporarily connect electrical wiring.
Unit installation Portable pump Water inlet cover Bucket (adding water through water inlet) Drain outlet for maintenance Refrigerant pipes 6 Turn OFF the power. 7 Disconnect the electrical wiring. ▪ Remove the service cover. ▪ Disconnect the power supply and user interface. ▪...
Piping installation Depending on the applicable legislation and the maximum working pressure of the unit (see "PS High" on the unit name plate), larger piping thickness might be required. 16.1.2 Refrigerant piping insulation ▪ Use polyethylene foam as insulation material: with a heat transfer rate between 0.041 and 0.052 ...
Piping installation DANGER: RISK OF BURNING/SCALDING CAUTION Do NOT reuse piping from previous installations. NOTICE Take the following precautions on refrigerant piping into account: ▪ Avoid anything but the designated refrigerant to get mixed into the refrigerant cycle (e.g. air). ▪...
Piping installation Taping Manual valve Pressure-reducing valve Nitrogen ▪ Do NOT use anti-oxidants when brazing pipe joints. Residue can clog pipes and break equipment. ▪ Do NOT use flux when brazing copper-to-copper refrigerant piping. Use phosphor copper brazing filler alloy (CuP279, CuP281, or CuP284:DIN EN ISO 17672), which does not require flux.
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Piping installation Insulation attached on the unit Piping on the indoor unit side Brazed connection Field piping 3 Insulate the refrigerant piping on the indoor unit as follows: Gas piping Liquid piping Insulation material (field supply) Tie wraps (accessory) Insulation pieces: Large (gas pipe), small (liquid pipe) (accessory) Brazed connection Refrigerant pipe connection (attached to the unit) Unit...
Electrical installation 17 Electrical installation In this chapter 17.1 About connecting the electrical wiring ..........................17.1.1 Precautions when connecting the electrical wiring ....................17.1.2 Guidelines when connecting the electrical wiring ....................17.1.3 Specifications of standard wiring components ..................... 17.2 To connect the electrical wiring to the indoor unit ....................... 17.3 To connect appropriate measures for appliances filled with CO₂..................
Electrical installation WARNING ALWAYS use multicore cable for power supply cables. WARNING Use an all-pole disconnection type breaker with at least 3 mm between the contact point gaps that provide full disconnection under overvoltage category III. WARNING If the supply cord is damaged, it MUST be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.
Electrical installation Tightening torques Wiring Screw size Tightening torque (N•m) Power supply cable 1.2~1.4 Transmission cable (F1, F2) M3.5 0.8~0.9 User interface cable ▪ The earth wire between the wire retainer and the terminal must be longer than the other wires. 17.1.3 Specifications of standard wiring components Component Class...
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Electrical installation NOTICE Be sure to keep the power line and transmission line apart from each other. Transmission wiring and power supply wiring may cross, but may NOT run parallel. 1 Remove the service cover. 2 User interface cable: Route the cable through the frame, connect the cable to the terminal block (symbols P1, P2) and fix the cable with a tie wrap.
Electrical installation Control box IN/D OUT/D Outdoor unit Indoor unit User interface Most downstream indoor unit ▪ Example: Group control or use with 2 user interfaces. Control box IN/D OUT/D Outdoor unit Indoor unit User interface (controls 3 indoor units) Most downstream indoor unit For use with 2 user interfaces ▪...
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Electrical installation 3 If the CO refrigerant leak detector is installed, enable the function for refrigerant leak detection as described in "19.1 Field setting" [ 70]. P1 P2 F1 F2 T1 T2 P1 P2 P1 P2 F1 F2 T1 T2 P1 P2 P1 P2 F1 F2 T1 T2 P1 P2...
Commissioning 18 Commissioning In this chapter 18.1 Precautions when commissioning............................18.2 Checklist before commissioning............................. 18.3 To perform a test run ................................18.4 Error codes when performing a test run..........................18.1 Precautions when commissioning INFORMATION During the first running period of the unit, the required power may be higher than stated on the nameplate of the unit.
Commissioning 18.3 To perform a test run INFORMATION Test run is carried out on the outdoor unit side. For the test run procedure, see the reference guide of the outdoor unit. If necessary, also see the reference guide of the user interface.
Configuration 19 Configuration 19.1 Field setting Make the following field settings so that they correspond with the actual installation setup and with the needs of the user: ▪ Bottom suction or rear suction installation setting ▪ External static pressure setting using: Automatic airflow adjustment setting User interface ▪...
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Configuration INFORMATION ▪ The fan speed of the indoor unit is preset to ensure the standard external static pressure. ▪ To set a higher or lower external static pressure, reset the initial setting with the user interface. User interface Check the indoor unit setting:—/C2 of mode 11(21) must be set to 01. Change—/C2 according to the external static pressure of the duct to be connected as in the table below.
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Configuration Function for refrigerant leak detection If the CO refrigerant leak detector (field supply) is connected to the indoor unit (symbols T1, T2), setting —/C2 of mode 12(22) must be changed to 08. See "10.5.1 About refrigerant leak detection" [ 31]. If the CO refrigerant leak Then detector (field supply) is…...
Hand-over to the user 20 Hand-over to the user Once the test run is finished and the unit operates properly, please make sure the following is clear for the user: ▪ Make sure that the user has the printed documentation and ask him/her to keep it for future reference.
Disposal 21 Disposal NOTICE Do NOT try to dismantle the system yourself: dismantling of the system, treatment of the refrigerant, oil and other parts MUST comply with applicable legislation. Units MUST be treated at a specialised treatment facility for reuse, recycling and recovery. FXSN50~112A2VEB Installer and user reference guide CO₂...
Technical data 22 Technical data ▪ A subset of the latest technical data is available on the regional Daikin website (publicly accessible). ▪ The full set of latest technical data is available on the Daikin Business Portal (authentication required). 22.1 Wiring diagram 22.1.1 Unified wiring diagram legend...
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Technical data Symbol Meaning AC*, CN*, E*, HA*, HE*, HL*, HN*, HR*, Connection, connector MR*_A, MR*_B, S*, U, V, W, X*A, K*R_*, NE D*, V*D Diode Diode bridge DIP switch Heater FU*, F*U, (for characteristics, refer to Fuse PCB inside your unit) Connector (frame ground) Harness H*P, LED*, V*L...
Optional equipment Equipment made or approved by Daikin that can be combined with the product according to the instructions in the accompanying documentation. Field supply Equipment NOT made by Daikin that can be combined with the product according to the instructions in the accompanying documentation.
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4P602817-1A 2020.05 Verantwortung für Energie und Umwelt...