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Installer and user reference guide VRV system air conditioner FXAA15AUV1B FXAA20AUV1B FXAA25AUV1B FXAA32AUV1B FXAA40AUV1B FXAA50AUV1B FXAA63AUV1B...
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 For the installer 14 About the box 14.1 Overview: About the box ..............................44 14.2 Indoor unit ..................................44 14.2.1 To unpack the indoor unit..........................44 14.2.2 To remove the accessories from the indoor unit ..................45 15 About the units and options 15.1 Identification ...................................
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Table of contents 25 Technical data 25.1 Wiring diagram................................82 25.1.1 Unified wiring diagram legend ........................82 26 Glossary Installer and user reference guide FXAA15~63AUV1B VRV system air conditioner 4P622295-1A – 2020.10...
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 ▪ The unit is factory charged with refrigerant and depending on pipe sizes and pipe lengths some systems require additional charging of refrigerant. ▪ Only use tools exclusively for the refrigerant type used in the system, this to ensure pressure resistance and prevent foreign materials from entering into the system.
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General safety precautions WARNING ▪ ONLY use copper wires. ▪ Make sure the field wiring complies with the applicable legislation. ▪ All field wiring MUST be performed in accordance with the wiring diagram supplied with the product. ▪ NEVER squeeze bundled cables and make sure they do NOT come in contact with the piping and sharp edges.
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General safety precautions WARNING ▪ After finishing the electrical work, confirm that each electrical component and terminal inside the electrical components box is connected securely. ▪ Make sure all covers are closed before starting up the unit. NOTICE Only applicable if the power supply is three‑phase, and the compressor has an ON/ OFF starting method.
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 CAUTION Install the refrigerant piping or components in a position where they are unlikely to be exposed to any substance which may corrode components containing refrigerant, unless the components are constructed of materials that are inherently resistant to corrosion or are suitably protected against corrosion.
WARNING Make sure installation, servicing, maintenance and repair comply with instructions from Daikin and with applicable legislation (for example national gas regulation) and are executed only by authorised persons. WARNING If one or more rooms are connected to the unit using a duct system, make sure: ▪...
Specific installer safety instructions NOTICE ▪ Do NOT re-use joints and copper gaskets which have been used already. ▪ Joints made in installation between parts of refrigerant system shall be accessible for maintenance purposes. 3.1.1 Installation space requirements CAUTION The total refrigerant charge in the system cannot exceed the requirements for minimum floor area of the smallest room that is served.
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 Children aged from 8 years and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge can only use this appliance if 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 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.
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User safety instructions WARNING Be careful with ladders when working in high places. CAUTION Turn off the unit before cleaning the air outlet, exterior, front panel and air filter. WARNING Do NOT let the indoor unit get wet. Possible consequence: Electric shock or fire.
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User safety instructions WARNING It is necessary to replace the sensor after every detection or at the end of the lifetime. Authorized person only MUST replace the sensor. "11 Troubleshooting" [ 38]) Troubleshooting (see WARNING Stop operation and shut off the power if anything unusual occurs (burning smells etc.).
About the system 5 About the system WARNING ▪ Do NOT modify, disassemble, remove, reinstall or repair the unit yourself as incorrect dismantling or installation may cause an electric shock or fire. Contact your dealer. ▪ In case of accidental refrigerant leaks, make sure there are no naked flames. The refrigerant itself is entirely safe, non-toxic and mildly flammable, but it will generate toxic gas when it accidentally leaks into a room where combustible air from fan heaters, gas cookers, etc.
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 and hot parts. WARNING Before operating the unit, be sure the installation has been carried out correctly by an installer. CAUTION It is unhealthy 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 INFORMATION For the operation limits see the technical data of the connected outdoor unit. 8.2 About operation modes INFORMATION Depending on the installed system, some operation modes will not be available. ▪ The air flow rate may adjust itself depending on the room temperature or the fan may stop immediately.
Operation 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. During defrost operation, the indoor unit fan will stop operation, and the following icon will appear on the home screen: The system will resume normal...
Operation a Cooling operation b Heating operation INFORMATION For setting procedure of the vertical airflow direction, see the reference guide or the manual of the used user interface. 2 Horizontal airflow ▪ Horizontal airflow: by manually adjusting position of the vertical blades (louvers). To adjust the louvers (vertical blades) 1 Adjust horizontal blades using the user interface so you can easily access the knobs on the vertical blades.
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 NOTICE Maintenance MUST be done by an authorized installer or service agent. We recommend performing maintenance at least once a year. However, applicable legislation might require shorter maintenance intervals. CAUTION: Pay attention to the fan! It is dangerous to inspect the unit while the fan is running.
Maintenance and service 10.2 Cleaning the unit CAUTION Turn off the unit before cleaning the air outlet, exterior, front panel and air filter. 10.2.1 To clean the air outlet and exterior WARNING Do NOT let the indoor unit get wet. Possible consequence: Electric shock or fire. NOTICE ▪...
Maintenance and service 3 Clean the front panel. Wipe it with a soft cloth soaked in water by using only neutral detergent. 4 Wipe panel with a dry soft cloth and let it dry up in the shade. 5 Attach the front panel. Align the hooks of the front panel with the slots and push them all the way in.
Maintenance and service 3 Clean the air filter. Use a vacuum cleaner or wash with water. If the air filter is very dirty, use a soft brush and neutral detergent. 4 Dry the air filter in the shadow. 5 Reattach the air filter. Replace the air filter as it was. 6 Close the front panel.
Maintenance and service NOTICE Applicable legislation on fluorinated greenhouse gases requires that the refrigerant charge of the unit is indicated both in weight and CO equivalent. Formula to calculate the quantity in CO equivalent tonnes: GWP value of the refrigerant × total refrigerant charge [in kg] / 1000 Please contact your installer for more information.
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Maintenance and service INFORMATION Lifetime of the sensor is 10 years. The user interface displays error "CH-05" 6 months before the end of the sensor lifetime and error "CH-02" after the end of the sensor lifetime. For more information refer to the reference guide of the user interface and contact you dealer.
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 11.1.4 Symptom: White mist comes out of a unit (Indoor unit) ▪ When humidity is high during cooling operation. If the interior of an indoor unit is extremely contaminated, the temperature distribution inside a room becomes uneven. It is necessary to clean the interior of the indoor unit. Ask your dealer for details on cleaning the unit.
Relocation 12 Relocation Contact your dealer for removing and reinstalling the total unit. Moving units requires technical expertise. FXAA15~63AUV1B Installer and user reference guide VRV system air conditioner 4P622295-1A – 2020.10...
Disposal 13 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. FXAA15~63AUV1B Installer and user reference guide VRV system air conditioner...
About the box 14 About the box 14.1 Overview: About the box This chapter describes what you have to do after the box with the indoor unit is delivered on-site. It contains information about: ▪ Unpacking and handling the unit ▪...
About the box 14.2.2 To remove the accessories from the indoor unit 1× 1× 8/9×, 2× 4× 1× 1× a Installation and operation manual b General safety precautions c Screw pack: M4×25L (8× for FXAA15~32, 9× for FXAA40~63), 2× M4×12L d Tie wraps (1 large, 3 small) e Insulation tape f Paper pattern for installation...
About the units and options 15 About the units and options In this chapter 15.1 Identification................................... 15.1.1 Identification label: Indoor unit ..........................15.2 About the indoor unit................................15.3 System layout..................................15.4 Combining units and options..............................15.4.1 Possible options for the indoor unit ........................15.1 Identification NOTICE When installing or servicing several units at the same time, make sure NOT to switch...
About the units and options a Outdoor unit b Indoor unit c User interface a Air filter b Front panel c Service cover d Front grille e Refrigerant pipes f Drain Hose g Electrical wiring 15.4 Combining units and options INFORMATION Certain options might not be available in your country.
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About the units and options CAUTION ▪ Each indoor unit has to be connected to a separate user interface. Only a safety system compatible remote controller can be used as the user interface. See technical data sheet for remote controller compatibility (e.g. BRC1H52/82*). ▪...
Unit installation 16 Unit installation In this chapter 16.1 Preparing the installation site ..............................16.1.1 Installation site requirements of the indoor unit ....................16.2 Opening and closing the unit ..............................16.2.1 To remove the front panel............................. 16.2.2 To re-install the front panel ........................... 16.2.3 To remove the front grille............................
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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: ▪...
Unit installation NOTICE NEVER mount the indoor unit directly on the wall. Use the attached mounting plate for installation. Minimum floor area requirements CAUTION The total refrigerant charge in the system cannot exceed the requirements for minimum floor area of the smallest room that is served. For minimum floor area requirements for indoor units, see the installation and operation manual of the outdoor unit.
Unit installation 16.2.3 To remove the front grille CAUTION Wear adequate personal protective equipment (protective gloves, safety glasses,…) when installing, maintaining or servicing the system. 1 Remove the front panel("16.2.1 To remove the front panel" [ 51]). 2 Remove the screws. ▪ 2 for FXAA15~32 2×...
Unit installation a Service cover screw b Service cover c Handle 16.2.6 To close the service cover 1 Place the service cover to its original place on the unit. 2 Install 1 screw back on the service cover. 16.3 Mounting the indoor unit In this chapter 16.3.1 To install the mounting plate..........................
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Unit installation 2 Use the paper pattern for installation (accessory). 3 Choose position for piping (for bottom or side piping see "16.3.3 To remove the pipe port cover" [ 56]): a Right piping b Bottom-right piping c Back-right piping d Bottom-left piping e Back-left piping f Left piping 4 Attach the mounting plate on the wall and install it temporarily.
Unit installation 37.9 464.9 427.1 (mm) 1050 A Paper pattern for installation with mounting plate for FXAA15~32 B Paper pattern for installation with mounting plate for FXAA40~63 a1 Recommended fixation location a2 Recommended fixing spots b Pocket for the pipe port cover c Tabs for placing a spirit level d Through-the-wall hole Ø80 mm e Drain hose position...
Unit installation 16.3.3 To remove the pipe port cover INFORMATION To connect the piping on right-side, right-bottom, left-side or left-bottom, the pipe port cover MUST be removed. a Cut off for side piping b Cut off for bottom piping 1 Remove the front grille ("16.2.3 To remove the front grille" [ 52]).
Unit installation a Front grille b Refrigerant piping c Tab 2× d Mounting plate (accessory) e Piece of packing material 16.3.5 To pass the pipes through the wall hole 1 Connect the drain piping "16.3.6 To provide drainage" [ 58], the refrigerant piping "17 ...
Unit installation 4 Pass the drain hose and refrigerant pipes through the wall hole. 5 When the complete installation is finished (drain piping "16.3.6 To provide drainage" [ 58], the refrigerant piping "17 Piping installation" [ 61] and the electrical wiring "18 ...
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Unit installation a Drain hose supplied with the indoor unit b Heat insulation tube (field supply) c Extension drain hose (field supply) ▪ Rigid polyvinyl chloride pipe. When connecting a rigid polyvinyl chloride pipe (nominal Ø13 mm) directly to the drain hose as with embedded piping work, use a field supplied drain socket (nominal Ø13 mm).
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Unit installation 1 Remove the insulation fixing screw on the right side and remove the drain hose. 2 Remove the drain plug on the left side and attach it to the right side. NOTICE Do NOT apply lubricating oil (refrigerant oil) to the drain plug when inserting it. The drain plug may deteriorate and cause drain leakage from the plug.
Piping installation 17 Piping installation In this chapter 17.1 Preparing refrigerant piping ..............................17.1.1 Refrigerant piping requirements ........................... 17.1.2 Refrigerant piping insulation..........................17.2 Connecting the refrigerant piping............................17.2.1 About connecting the refrigerant piping....................... 17.2.2 Precautions when connecting the refrigerant piping.................... 17.2.3 Guidelines when connecting the refrigerant piping....................
Piping installation Outer diameter (Ø) Temper grade Thickness (t) Ø 6.4 mm (1/4") Annealed (O) ≥0.8 mm 9.5 mm (3/8") 12.7 mm (1/2") 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. 17.1.2 Refrigerant piping insulation ▪...
Piping installation 17.2.2 Precautions when connecting the refrigerant piping INFORMATION Also read the precautions and requirements in the following chapters: ▪ "2 General safety precautions" [ 6] ▪ "17.1 Preparing refrigerant piping" [ 61] DANGER: RISK OF BURNING/SCALDING CAUTION ▪ Do NOT use mineral oil on flared part. ▪...
Piping installation ▪ Coat the flare inner surface with ether oil or ester oil when connecting a flare nut. Tighten 3 or 4 turns by hand, before tightening firmly. ▪ ALWAYS use 2 wrenches together when loosening a flare nut. ▪...
Piping installation Flare tool for R32 Conventional flare tool (clutch type) Clutch type Wing nut type (Ridgid-type) (Imperial-type) 0~0.5 mm 1.0~1.5 mm 1.5~2.0 mm 5 Check that the flaring is properly made. a Flare’s inner surface MUST be flawless. b The pipe end MUST be evenly flared in a perfect circle. c Make sure the flare nut is fitted.
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Piping installation NOTICE Make sure to insulate all refrigerant piping. Any exposed piping might cause condensation. FXAA15~63AUV1B Installer and user reference guide VRV system air conditioner 4P622295-1A – 2020.10...
Electrical installation 18 Electrical installation In this chapter 18.1 About connecting the electrical wiring ..........................18.1.1 Precautions when connecting the electrical wiring ....................18.1.2 Guidelines when connecting the electrical wiring ....................18.1.3 Specifications of standard wiring components ..................... 18.2 To connect the electrical wiring to the indoor unit ....................... 18.1 About connecting the electrical wiring Typical workflow Connecting the electrical wiring typically consists of the following stages:...
Electrical installation WARNING ▪ If the power supply has a missing or wrong N-phase, equipment might break down. ▪ Establish proper earthing. Do NOT earth the unit to a utility pipe, surge absorber, or telephone earth. Incomplete earthing may cause electrical shock. ▪...
Electrical installation 18.2 To connect the electrical wiring to the indoor unit NOTICE ▪ Follow the wiring diagram (delivered with the unit, located at the inside of the service cover). ▪ For instructions on how to connect the optional equipment, see the installation manual delivered with the optional equipment.
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Electrical installation a Electrical wiring Complete system example 1 user interface controls 1 indoor unit. Control box IN/D OUT/D a Outdoor unit b Indoor unit c User interface d Most downstream indoor unit NOTICE Group control connection is NOT allowed. CAUTION ▪...
Finishing the indoor unit installation 19 Finishing the indoor unit installation 19.1 To fix the unit on the mounting plate 1 Remove the piece of packing material. 2 Press the bottom frame of the unit with both hands to set it on the bottom hooks of the mounting plate.
Commissioning 20 Commissioning In this chapter 20.1 Overview: Commissioning ..............................20.2 Precautions when commissioning............................20.3 Checklist before commissioning............................. 20.4 To perform a test run ................................20.1 Overview: Commissioning This chapter describes what you have to do and know to commission the system after it is installed.
Commissioning The indoor unit is properly mounted. The outdoor unit is properly mounted. Make sure drain piping is properly installed, insulated and drainage flows smoothly. Check for water leaks. Possible consequence: Condensate water might drip. The refrigerant pipes (gas and liquid) are installed correctly and thermally insulated. There are NO refrigerant leaks.
Configuration 21 Configuration 21.1 Field setting Make the following field settings so that they correspond with the actual installation setup and with the needs of the user: ▪ Airflow rate increase mode ▪ Air volume when thermostat control is OFF ▪...
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Configuration If you want… Then — During thermostat 12 (22) OFF at cooling Setup volume operation Monitoring 1 Monitoring 2 During thermostat 12 (22) OFF at heating Setup volume operation Monitoring 1 Monitoring 2 Only use in combination with optional remote sensor or when setting M 10 (20), SW 2, — 3 is used.
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Configuration Setting: Thermostat differential changeover (if remote sensor is used) If the system contains a remote sensor, set the increase/decrease increments. If you want to change increments to… Then — 1°C 12 (22) 0.5°C Setting: Differential for automatic changeover Set temperature difference between cooling setpoint and heating setpoint in automatic mode (availability depends on the system type).
Hand-over to the user 22 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.
Troubleshooting 23 Troubleshooting 23.1 Solving problems based on error codes If the unit runs into a problem, the user interface displays an error code. It is important to understand the problem and to take measures before resetting an error code. This should be done by a licensed installer or by your local dealer. This chapter gives you an overview of most possible error codes and their descriptions as they appear on the user interface.
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Troubleshooting Code Description Room temperature thermistor in remote controller abnormality FXAA15~63AUV1B Installer and user reference guide VRV system air conditioner 4P622295-1A – 2020.10...
Disposal 24 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. FXAA15~63AUV1B Installer and user reference guide VRV system air conditioner...
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Technical data 25 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). 25.1 Wiring diagram 25.1.1 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...
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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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4P622295-1A 2020.10 Verantwortung für Energie und Umwelt...