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Summary of Contents for Daikin FXSN40B2VEB
- Page 1 Installer and user reference guide CO₂ VRV system air conditioner FXSN40B2VEB FXSN50B2VEB FXSN63B2VEB FXSN80B2VEB...
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Page 2: Table Of Contents
Table of contents Table of contents 1 About the documentation About this document..............................1.1.1 Meaning of warnings and symbols........................ 2 General safety precautions For the installer ................................2.1.1 General................................2.1.2 Installation site............................... 2.1.3 Refrigerant — in case of R744........................2.1.4 Electrical................................. - Page 3 Table of contents 15.3 System layout ................................. 15.4 Combining units and options ............................15.4.1 Possible options for the indoor unit......................16 Unit installation 16.1 Preparing the installation site ............................16.1.1 Installation site requirements of the indoor unit..................16.2 Mounting the indoor unit............................... 16.2.1 Guidelines when installing the indoor unit ....................
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Page 4: About The Documentation
A subset of the latest technical data is available on the regional Daikin website (publicly accessible). ▪ The full set of the latest technical data is available on the Daikin Business Portal (authentication required). FXSN-B Installer and user reference guide CO₂... -
Page 5: Meaning Of Warnings And Symbols
About the documentation 1.1.1 Meaning of warnings and symbols DANGER Indicates a situation that results in death or serious injury. DANGER: RISK OF ELECTROCUTION Indicates a situation that could result in electrocution. DANGER: RISK OF BURNING/SCALDING Indicates a situation that could result in burning/scalding because of extreme hot or cold temperatures. - Page 6 About the documentation Symbol Explanation Indicates a table title or a reference to it. Example: " 1–3 Table title" means "Table 3 in chapter 1". FXSN-B Installer and user reference guide CO₂ VRV system air conditioner 4P794781-2 – 2024.11...
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Page 7: General Safety Precautions
WARNING 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 unless otherwise specified. WARNING Make sure installation, testing and applied materials comply with applicable legislation (on top of the instructions described in the Daikin documentation). -
Page 8: Installation Site
General safety precautions ▪ Name and address of fire department, police and hospital ▪ Name, address and day and night telephone numbers for obtaining service In Europe, EN378 provides the necessary guidance for this logbook. 2.1.2 Installation site ▪ Provide sufficient space around the unit for servicing and air circulation. ▪... -
Page 9: Electrical
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. NOTICE After all the piping has been connected, make sure there is no gas leak. Use nitrogen to perform a gas leak detection. - Page 10 General safety precautions WARNING ▪ ONLY use copper wires. ▪ Make sure the field wiring complies with the national wiring regulations. ▪ 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.
- Page 11 General safety precautions NOTICE ONLY applicable if the power supply is three‑phase, and the compressor has an ON/ OFF starting method. If there exists the possibility of reversed phase after a momentary black out and the power goes ON and OFF while the product is operating, attach a reversed phase protection circuit locally.
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Page 12: Specific Installer Safety Instructions
WARNING Make sure installation, servicing, maintenance, repair and applied materials follow the instructions from Daikin (including all documents listed in “Documentation set”) 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. - Page 13 Specific installer safety instructions Refrigerant piping installation (see "17 Piping installation" [ 52]) 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.
- Page 14 Specific installer safety instructions 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 shocks. ▪...
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Page 15: For The User
For the user FXSN-B Installer and user reference guide CO₂ VRV system air conditioner 4P794781-2 – 2024.11... -
Page 16: User Safety Instructions
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 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... -
Page 17: Instructions For Safe Operation
User safety instructions ▪ Batteries are marked with the following symbol: This means that the batteries may NOT be mixed with unsorted household waste. If a chemical symbol is printed beneath the symbol, this chemical symbol means that the battery contains a heavy metal above a certain concentration. Possible chemical symbols are: Pb: lead (>0.004%). - Page 18 User safety instructions CAUTION To avoid oxygen deficiency, ventilate the room sufficiently if equipment with burner is used together with the system. CAUTION Do NOT operate the system when using a room fumigation-type insecticide. Chemicals could collect in the unit, and endanger the health of people who are hypersensitive to chemicals.
- Page 19 User safety instructions CAUTION Before accessing terminal devices, make sure to interrupt all power supply. DANGER: RISK OF ELECTROCUTION To clean the air conditioner or air filter, be sure to stop operation and turn all power supplies OFF. Otherwise, an electrical shock and injury may result.
- Page 20 User safety instructions "11 Troubleshooting" [ 32]) Troubleshooting (see 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, electrical shock or fire. Contact your dealer. FXSN-B Installer and user reference guide CO₂...
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Page 21: About The System
About the system 5 About the system 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 electrical shock or fire. Contact your dealer. NOTICE The appliance shall be stored so as to prevent mechanical damage. -
Page 22: Information Requirements For Fan Coil Units
Total electric power input elec Sound power level (cooling) dB(A) Sound power level (heating) dB(A) Contact details: DAIKIN INDUSTRIES CZECH REPUBLIC s.r.o. U Nové Hospody 1155/1, 301 00 Plzeň Skvrňany, Czech Republic FXSN40B2VEB 0.128 FXSN50B2VEB 0.179 FXSN63B2VEB 0.160 FXSN80B2VEB 0.313... -
Page 23: User Interface
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. -
Page 24: Before Operation
Before operation 7 Before operation CAUTION "4 User safety instructions" [ 16] to acknowledge all related safety instructions. This operation manual is for the following systems with standard control. Before initiating operation, contact your dealer for the operation that corresponds to your system type and mark. -
Page 25: Operation
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. -
Page 26: Special Heating Operation Modes
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 after approximately 6... -
Page 27: Energy Saving And Optimum Operation
Energy saving and optimum operation 9 Energy saving and optimum operation CAUTION NEVER expose little children, plants or animals directly to the airflow. NOTICE Do NOT place objects that should NOT get wet below the unit. Condensation on the unit or refrigerant pipes, or drain blockage may cause dripping. Possible consequence: Objects under the unit can get dirty or damaged. -
Page 28: Maintenance And Service
Maintenance and service 10 Maintenance and service 10.1 Precautions for maintenance and service CAUTION "4 User safety instructions" [ 16] to acknowledge all related safety instructions. NOTICE NEVER inspect or service the unit by yourself. Ask a qualified service person to perform this work. However, as end user, you may clean the air filter, suction grille, air outlet and outside panels. -
Page 29: Cleaning The Air Filter And Air Outlet
Maintenance and service 10.2 Cleaning the air filter and air outlet CAUTION Turn off the unit before cleaning the air filter and air outlet. NOTICE ▪ Do NOT use gasoline, benzene, thinner polishing powder or liquid insecticide. Possible consequence: Discoloration and deformation. ▪... -
Page 30: Maintenance Before A Long Stop Period
Maintenance and service 3 Dry the air filter in the shadow. 4 Re-attach the air filter. Align the 2 hanger brackets and push the 2 clips in their place and pull the cloth if necessary. rear suction bottom suction 5 Confirm that all hangers are fixed. 6 In case of bottom suction, close the air inlet grille. -
Page 31: About The Refrigerant
Maintenance and service 10.5 About the refrigerant This product contains refrigerant gases. Refrigerant type: R744 (CO WARNING The R744 refrigerant (CO ) inside the unit is odourless, non-flammable and normally does NOT leak. If the refrigerant leaks in high concentrations in the room, it may have negative effects on its occupants such as asphyxiation and carbon dioxide poisoning. -
Page 32: Troubleshooting
Troubleshooting 11 Troubleshooting If one of the following malfunctions occurs, 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, electrical shock or fire. -
Page 33: Symptoms That Are Not System Malfunctions
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. ▪... -
Page 34: Symptom: Dust Comes Out Of The Unit
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. -
Page 35: Relocation
Relocation 12 Relocation Contact your dealer to remove and reinstall the entire unit. Moving units requires technical expertise. FXSN-B Installer and user reference guide CO₂ VRV system air conditioner 4P794781-2 – 2024.11... -
Page 36: Disposal
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. FXSN-B Installer and user reference guide CO₂... -
Page 37: For The Installer
For the installer FXSN-B Installer and user reference guide CO₂ VRV system air conditioner 4P794781-2 – 2024.11... -
Page 38: About The Box
About the box 14 About the box Keep the following in mind: ▪ At delivery, the unit MUST be checked for damage and completeness. Any damage or missing parts MUST be reported immediately to the claims agent of the carrier. ▪... - Page 39 About the box d Screws for duct flanges e Metal clamp f Sealing pads: Large (drain pipe), medium 1 (gas pipe), medium 2 (liquid pipe) g Drain hose h Small sealing pad i Insulation piece: Small (liquid pipe) j Insulation piece: Large (gas pipe) k Tie wraps FXSN-B Installer and user reference guide...
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Page 40: About The Units And Options
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... -
Page 41: Combining Units And Options
About the units and options b Indoor unit for air conditioning 15.4 Combining units and options INFORMATION Certain options may NOT be available in your country. 15.4.1 Possible options for the indoor unit Make sure you have the following mandatory options: ▪... -
Page 42: Unit Installation
Unit installation 16 Unit installation NOTICE Make sure to install all necessary countermeasures in case of refrigerant leakage according to standard EN378. In this chapter 16.1 Preparing the installation site ..............................16.1.1 Installation site requirements of the indoor unit....................16.2 Mounting the indoor unit............................... - Page 43 Unit installation NOTICE The equipment described in this manual may cause electronic noise generated from radio-frequency energy. The equipment complies to specifications that are designed to provide reasonable protection against such interference. However, there is no guarantee that interference will NOT occur in a particular installation. It is therefore recommended to install the equipment and electric wires in such a way that they keep a proper distance from stereo equipment, personal computers, etc.
- Page 44 Unit installation ▪ Protective guards. Install protective guards such as the inlet/outlet grille (field supply) on the suction and discharge side to prevent somebody from touching the fan blades or heat exchanger. INFORMATION Mind the following dimensions of the space necessary for the correct appliance installation, including the minimum permissible distances to adjacent structures.
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Page 45: Mounting The Indoor Unit
Unit installation Installation options ≥1100 (mm) ≥1100 (mm) (mm) A Standard rear suction B Installation with rear canvas duct and duct service opening C Installation with bottom canvas duct and air inlet grill a Ceiling surface b Ceiling opening c Air filter removal route for air filter maintenance d Air inlet filter e Duct service opening f Interchangeable plate... - Page 46 Unit installation a Air filter holding plate with air filter(s) b Interchangeable plate ▪ Ceiling strength. Check whether the ceiling is strong enough to support the weight of the unit. If there is a risk, reinforce the ceiling before installing the unit. For existing ceilings, use anchors.
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Page 47: Guidelines When Installing The Ducting
Unit installation 16‒1 Suspension bolt spacing (A) Class A (mm) 40, 50 1038 63, 80 1438 ▪ Level. Make sure the unit is level at all four corners using a level or a water-filled vinyl tube. a Water level b Vinyl tube NOTICE Do NOT install the unit tilted. -
Page 48: Guidelines When Installing The Drain Piping
Unit installation ▪ Fixing screws. When installing an air inlet duct, select fixing screws that stick out 5 mm on the inside of the flange to protect the air filter from damage during maintenance of the filter. 5 mm a Air inlet duct b Inside of the flange c Fixing screw 3 Wind aluminium tape around the flange and duct connection. - Page 49 Unit installation ≤300 1000~1500 (mm) A In case of rear suction installation 231 mm In case of installation with canvas duct (field supply) 350~530 mm a Metal clamp (accessory) b Drain hose (accessory) c Rising drain piping (vinyl pipe of 25 mm nominal diameter and 32 mm outer diameter) (field supply) d Hanging bars (field supply) ▪...
- Page 50 Unit installation ≤4 mm A-A' a Drain pipe connection (attached to the unit) b Drain hose (accessory) c Metal clamp (accessory) d Large sealing pad (accessory) e Drain piping (field supply) NOTICE ▪ Do NOT remove the drain pipe plug. Water might leak out. ▪...
- Page 51 Unit installation a Power supply terminal block b User interface terminal block c Service cover with wiring diagram 2 Turn ON the power supply. 3 Start fan only operation (see the reference guide or the service manual of the user interface). 4 Remove the water inlet cover (1 screw).
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Page 52: Piping Installation
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 ..................... -
Page 53: Refrigerant Piping Insulation
Piping installation Piping temper grade and thickness Outer diameter (Ø) Temper grade Thickness (t) Ø 9.5 mm (3/8") R420 ≥0.65 mm (drawn) 12.7 mm (1/2") ≥0.85 mm 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 ▪... -
Page 54: Precautions When Connecting The Refrigerant Piping
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" [ 7] ▪ "17.1 Preparing refrigerant piping" [ 52] DANGER: RISK OF BURNING/SCALDING CAUTION NEVER bend high pressure piping! Bending can reduce the pipe thickness and thus weaken the piping. -
Page 55: Guidelines When Connecting The Refrigerant Piping
Piping installation 17.2.3 Guidelines when connecting the refrigerant piping ▪ When brazing, blow through with nitrogen to prevent creation of large quantities of oxidized film on the inside of the piping. This film adversely affects valves and compressors in the refrigerating system and prevents proper operation. ▪... - Page 56 Piping installation a Insulation attached on the unit b Piping on the indoor unit side c Brazed connection d Field piping 3 Insulate the refrigerant piping on the indoor unit as follows: A Liquid piping B Gas piping a Insulation material (field supply) b Tie wraps (accessory) c Insulation pieces: Large (gas pipe), small (liquid pipe) (accessory) d Brazed connection...
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Page 57: Electrical Installation
Electrical installation 18 Electrical installation NOTICE This is a class A product. In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures. In this chapter 18.1 About connecting the electrical wiring ..........................18.1.1 Precautions when connecting the electrical wiring .................... -
Page 58: Guidelines When Connecting The Electrical Wiring
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 shocks. ▪... -
Page 59: Specifications Of Standard Wiring Components
Electrical installation Use the following methods for installing wires: Wire type Installation method Single-core wire AA´ A´ Stranded conductor wire twisted to "solid-like" connection a Curled wire (single-core or twisted stranded conductor wire) b Screw c Flat washer Stranded conductor wire with round crimp-style terminal a Terminal... -
Page 60: To Connect The Electrical Wiring To The Indoor Unit
Electrical installation Power supply of the product FXSN40: 1.5 A FXSN50: 1.8 A FXSN63: 2.1 A FXSN80: 2.6 A MCA=Minimum circuit ampacity. Stated values are maximum values (see electrical data of indoor unit for exact values). Wiring / circuit breaker (field supplied) Power supply cable MUST comply with national wiring regulation. - Page 61 Electrical installation 3 Interconnection cable: Route the cable through the frame, connect the cable to the terminal block (make sure the symbols F1, F2 match with the symbols on the outdoor unit), and fix the cable with a tie wrap. 4 Power supply cable: Route the cable through the frame and connect the cable to the terminal block (L, N, earth).
- Page 62 Electrical installation Control box IN/D OUT/D a Outdoor unit b Indoor unit c User interface (controls 3 indoor units) d Most downstream indoor unit e For use with 2 user interfaces ▪ Setting master unit (Cooling/Heating masterhood). In case of group control, connect the user interface wiring directly to the master unit.
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Page 63: Commissioning
19 Commissioning NOTICE General commissioning checklist. Next to the commissioning instructions in this chapter, a general commissioning checklist is also available on the Daikin Business Portal (authentication required). The general commissioning checklist is complementary to the instructions in this chapter and can be used as a guideline and reporting template during commissioning and hand-over to the user. -
Page 64: To Perform A Test Run
Commissioning Field wiring Check that the field wiring has been carried out according to the instructions described in the chapter "18 Electrical installation" [ 57], according to the wiring diagrams and according to the applicable national wiring regulation. Power supply voltage Check the power supply voltage on the local supply panel. -
Page 65: Configuration
Configuration 20 Configuration 20.1 Field setting Make the following field settings so that they correspond with the actual installation setup and with the needs of the user: ▪ Ceiling height ▪ Bottom suction or rear suction installation ▪ External static pressure setting using: Airflow automatic adjustment setting User interface ▪... - Page 66 Configuration Settings for external static pressure can be achieved in 2 ways: ▪ Using the airflow automatic adjustment function ▪ Using the user interface To set external static pressure by airflow automatic adjustment function NOTICE ▪ Do NOT adjust the dampers during the fan only operation for airflow automatic adjustment.
- Page 67 Configuration External static pressure (Pa) — Class 40, 50, 63 13(23) — — — — — — — — — Setting: Air volume when thermostat control is OFF This setting must correspond with the needs of the user. It determines the fan speed of the indoor unit during thermostat OFF condition.
- Page 68 Configuration If you want… Then — 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, — 03 is used. Setting: Time to clean air filter This setting must correspond with the air contamination in the room.
- Page 69 Configuration Setting: Differential for automatic changeover Set temperature difference between cooling setpoint and heating setpoint in automatic mode (availability depends on the system type). Differential is cooling setpoint minus heating setpoint. If you want to set… Then Example — 0°C 12 (22) cooling 24°C/heating 24°C 1°C...
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Page 70: Hand-Over To The User
Hand-over to the user 21 Hand-over to the user Once the test run is finished and the unit operates properly, 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. -
Page 71: Troubleshooting
Troubleshooting 22 Troubleshooting 22.1 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. -
Page 72: Disposal
Disposal 23 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. FXSN-B Installer and user reference guide CO₂... -
Page 73: Technical Data
A subset of the latest technical data is available on the regional Daikin website (publicly accessible). ▪ The full set of the latest technical data is available on the Daikin Business Portal (authentication required). 24.1 Wiring diagram 24.1.1 Unified wiring diagram legend For applied parts and numbering, refer to the wiring diagram on the unit. - Page 74 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...
- Page 75 Technical data Symbol Meaning Thermo switch Residual current device Resistor Thermistor Receiver Limit switch Float switch S*NG Refrigerant leak detector S*NPH Pressure sensor (high) S*NPL Pressure sensor (low) S*PH, HPS* Pressure switch (high) S*PL Pressure switch (low) Thermostat S*RH Humidity sensor S*W, SW* Operation switch SA*, F1S...
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Page 76: Glossary
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. - Page 80 4P794781-2 2024.11...
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