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Summary of Contents for Daikin EKHWET-BV3
- Page 1 Installer reference guide R32 Split series – Domestic hot water tank https://daikintechnicaldatahub.eu EKHWET90B▲V3▼ EKHWET120B▲V3▼ ▲= 1, 2, 3, …, 9, A, B, C, …, Z ▼= , , 1, 2, 3, …, 9...
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Page 2: Table Of Contents
Table of contents Table of contents 1 About this document Meaning of warnings and symbols..........................Installer reference guide at a glance ..........................2 General safety precautions For the installer ................................2.1.1 General ................................2.1.2 Installation site ............................... 10 2.1.3 Refrigerant — in case of R410A or R32......................10 2.1.4 Water ................................ - Page 3 Table of contents 9.1.3 About electrical compliance........................... 47 Connections to the indoor unit ............................48 9.2.1 To connect the main power supply........................ 48 9.2.2 To connect the booster heater power supply ....................49 9.2.3 To connect the WLAN cartridge (delivered as accessory)................50 10 Configuration 10.1 Overview: Configuration..............................
- Page 4 Table of contents 16 Glossary 17 Field settings table Installer reference guide EKHWET90+120B R32 Split series – Domestic hot water tank 4P680077-1A – 2022.11...
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Page 5: About This Document
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). -
Page 6: Meaning Of Warnings And Symbols
▪ Daikin e-Care Mobile app for installers and service technicians that allows you to register, configure and troubleshoot heating systems. The mobile app can be downloaded for iOS and Android devices using the QR codes below. Registration to the Stand By Me platform is required to access the app. -
Page 7: Installer Reference Guide At A Glance
About this document INFORMATION Indicates useful tips or additional information. Symbols used on the unit: Symbol Explanation Before installation, read the installation and operation manual, and the wiring instruction sheet. Before performing maintenance and service tasks, read the service manual. For more information, see the installer and user reference guide. - Page 8 About this document Chapter Description Finishing the outdoor unit What to do after unit installation, piping installation installation and electrical installation Configuration What to do and know to configure the system after it is installed Commissioning What to do and know to commission the system after it is configured Hand‑over to the user What to give and explain to the user...
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Page 9: General Safety Precautions
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). -
Page 10: Installation Site
General safety precautions CAUTION ▪ Do NOT place any objects or equipment on top of the unit. ▪ Do NOT sit, climb or stand on the unit. In accordance with the applicable legislation, it might be necessary to provide a logbook with the product containing at least: information on maintenance, repair work, results of tests, stand-by periods,…... - Page 11 General safety precautions WARNING Take sufficient precautions in case of refrigerant leakage. If refrigerant gas leaks, ventilate the area immediately. Possible risks: ▪ Excessive refrigerant concentrations in a closed room can lead to oxygen deficiency. ▪ Toxic gas might be produced if refrigerant gas comes into contact with fire. WARNING ALWAYS recover the refrigerant.
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Page 12: Water
General safety precautions Then A siphon tube is NOT present Charge with the cylinder upside down. ▪ Open refrigerant cylinders slowly. ▪ Charge the refrigerant in liquid form. Adding it in gas form may prevent normal operation. CAUTION When the refrigerant charging procedure is done or when pausing, close the valve of the refrigerant tank immediately. - Page 13 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.
- Page 14 General safety precautions Install power cables at least 1 meter away from televisions or radios to prevent interference. Depending on the radio waves, a distance of 1 meter may NOT be sufficient. NOTICE ONLY applicable if the power supply is three‑phase, and the compressor has an ON/ OFF starting method.
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Page 15: Specific Installer Safety Instructions
WARNING Make sure installation, servicing, maintenance and repair comply with instructions from Daikin and with applicable legislation and are executed ONLY by authorised persons. Opening and closing the units (see "7.2 Opening and closing the... - Page 16 Specific installer safety instructions DANGER: RISK OF ELECTROCUTION DANGER: RISK OF BURNING/SCALDING Mounting the indoor unit (see "7.3 Mounting the indoor unit" [ 37]) WARNING Fixing method of the indoor unit MUST be in accordance with the instructions from this manual. See "7.3 Mounting the indoor unit" [ 37].
- Page 17 Specific installer safety instructions WARNING Electrical wiring connection method MUST be in accordance with the instructions from: ▪ This manual. See "9 Electrical installation" [ 45]. ▪ The wiring diagram of the indoor unit, which is delivered with the unit, located on the inside of the indoor unit switch box cover.
- Page 18 Specific installer safety instructions CAUTION To guarantee the unit is completely earthed, ALWAYS connect the booster heater power supply and the earth cable. INFORMATION Details of type and rating of fuses, or rating of circuit breakers are described in "9 Electrical installation" [ 45].
- Page 19 Specific installer safety instructions DANGER: RISK OF BURNING/SCALDING The water in the tank can be very hot. Troubleshooting (see "14 Troubleshooting" [ 101]) DANGER: RISK OF ELECTROCUTION DANGER: RISK OF BURNING/SCALDING WARNING ▪ When carrying out an inspection on the switch box of the unit, ALWAYS make sure that the unit is disconnected from the mains.
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Page 20: About The Box
About the box 4 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 21: Indoor Unit
About the box 4.2 Indoor unit 4.2.1 To unpack the indoor unit 4.2.2 To remove the accessories from the indoor unit Some accessories are located inside the unit. For more information on opening the unit, see "7.2.2 To open the indoor unit" [ 36]. -
Page 22: About The Units And Options
5.1 Identification 5.1.1 Identification label: Indoor unit Location Model identification Example: EK HW E T 120 BA V3 Code Description European Kit – Daikin Branded Hot water for LT Enamel Wall mounted Volume in liter Model series 1~ / 230 V / 50 Hz 5.2 Possible options for the indoor unit... -
Page 23: Application Guidelines
Application guidelines 6 Application guidelines In this chapter Overview: Application guidelines ............................Setting up the domestic hot water tank ..........................6.2.1 System layout – Standalone DHW tank ......................... 6.2.2 Selecting the volume and desired temperature for the DHW tank..............6.2.3 Setup and configuration –... -
Page 24: Selecting The Volume And Desired Temperature For The Dhw Tank
Application guidelines 6.2.2 Selecting the volume and desired temperature for the DHW tank People experience water as hot when its temperature is 40°C. Therefore, the DHW consumption is always expressed as equivalent hot water volume at 40°C. However, you can set the DHW tank temperature at a higher temperature (example: 53°C), which is then mixed with cold water (example: 15°C). -
Page 25: Setup And Configuration - Dhw Tank
Application guidelines Possible DHW tank volumes Type Possible volumes Standalone DHW tank ▪ 90 l ▪ 120 l Energy saving tips ▪ If the DHW consumption differs from day to day, you can program a weekly schedule with different desired DHW tank temperatures for each day. ▪... -
Page 26: Permanent Power Limitation
Application guidelines NOTICE Set a minimum power consumption of 3 kW to guarantee: ▪ Defrost operation. Otherwise, if defrosting is interrupted several times, the heat exchanger will freeze up. ▪ DHW production by allowing booster heater. NOTICE ▪ In case Power Consumption Control is turned ON and activated while outdoor unit is performing Air Conditioning operation, booster heater might be prohibited. - Page 27 Application guidelines Produced heat Consumed energy A Outdoor unit B Booster heater a Limited outdoor unit operation b Full outdoor unit operation c Booster heater turned ON EKHWET90+120B Installer reference guide R32 Split series – Domestic hot water tank 4P680077-1A – 2022.11...
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Page 28: Unit Installation
Unit installation 7 Unit installation In this chapter Preparing the installation site ..............................7.1.1 Installation site requirements of the indoor unit ....................7.1.2 Special requirements for R32 units ........................7.1.3 Installation patterns ............................... Opening and closing the units..............................7.2.1 About opening the units ............................7.2.2 To open the indoor unit ............................ -
Page 29: Special Requirements For R32 Units
Joints made in installation between parts of refrigerant system shall be accessible for maintenance purposes. WARNING Make sure installation, servicing, maintenance and repair comply with instructions from Daikin and with applicable legislation and are executed ONLY by authorised persons. EKHWET90+120B Installer reference guide R32 Split series –... - Page 30 Unit installation NOTICE ▪ Protect pipework from physical damage. ▪ Keep the pipework installation to a minimum. EKHWET90+120B Installer reference guide R32 Split series – Domestic hot water tank 4P680077-1A – 2022.11...
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Page 31: Installation Patterns
Unit installation 7.1.3 Installation patterns Depending on the type of room in which you install the indoor unit, different installation patterns are allowed: Room type Allowed patterns Living room, kitchen, garage, attic, basement, storage 1, 2 room Technical room (i.e. room that is NEVER occupied by 1, 2, 3 persons) PATTERN 1... - Page 32 Unit installation PATTERN 1 START PATTERN 1 You can install the unit in room A. See table 1: Is the floor area of room A ) large enough for the given roomA refrigerant charge and the given release height? Go to PATTERN 2 PATTERN 2 PATTERN 2: Conditions ventilation openings If you want to take advantage of the floor area of the adjacent room, you must provide 2 openings (one at the bottom, one at the top) between the rooms to...
- Page 33 Unit installation Start PATTERN 2 nv-min Calculate the total floor area. See table 4: Look up the minimum bottom opening area for natural ventilation with the adjacent room (A ) for the given refrigerant charge, total roomA roomB nv-min the given floor area of room A (A ) [! NOT room A + room B !] and the roomA given release height (H1).
- Page 34 Unit installation Table 2: Minimum release height Take the following into account: • For intermediate floor areas, use the column with the lower value. Example: If the floor area is 5 m², use the column of 4.00 m². • For intermediate refrigerant charges, use the row with the higher value. Example: If the refrigerant charge is 2.35 kg, use the row of 2.4 kg.
- Page 35 Unit installation (dm²) – In case of Refrigerant charge=2.6 kg nv-min Release height (m) Floor area of room A (m²) [! NOT room A + room B !] 2,00 4,00 6,00 8,00 10,00 12,00 14,00 2.45 2.65 PATTERN 3 PATTERN 3 is only allowed for installations in technical rooms (i.e. room that is NEVER occupied by persons).
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Page 36: Opening And Closing The Units
Unit installation (minimum bottom opening area for natural ventilation) nv-min The minimum bottom opening area for natural ventilation between the unoccupied room and the outside depends on the total refrigerant in the system. For intermediate refrigerant charges, use the row with the higher value. Example: If the refrigerant charge is 2.55 kg, use the row of 2.6 kg. -
Page 37: To Close The Indoor Unit
Unit installation 4× 7.2.3 To close the indoor unit 1 Reinstall the switch box cover. 2 Reinstall the top cover. 3 Reinstall the bottom cover. NOTICE When closing the indoor unit cover, make sure that the tightening torque does NOT exceed 2.94 N•m. - Page 38 Unit installation 2× (mm) 2 Lift the unit. ±45 3 Attach the unit to the wall: ▪ Locate the bracket on the back of the unit above the 2 bolts. ▪ Lower the bracket on the back of the unit over the 2 bolts. ▪...
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Page 39: Piping Installation
Piping installation 8 Piping installation In this chapter Preparing refrigerant piping ..............................8.1.1 Refrigerant piping requirements ........................... Connecting refrigerant piping ..............................8.2.1 To connect the refrigerant piping to the indoor unit.................... Preparing water piping ................................8.3.1 Water circuit requirements ........................... Connecting water piping ................................ -
Page 40: Preparing Water Piping
Piping installation a Refrigerant liquid stop valve b Refrigerant gas stop valve 2 Connect the gas stop valve from the outdoor unit to the refrigerant gas stop valve of the indoor unit. 8.3 Preparing water piping 8.3.1 Water circuit requirements INFORMATION Also read the precautions and requirements in the "2 ... - Page 41 Piping installation ▪ Field supply components – Water. Only use materials that are compatible with water used in the system and with the materials used in the indoor unit. ▪ Field supply components – Water pressure and temperature. Check that all components in the field piping can withstand the water pressure and water temperature.
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Page 42: Connecting Water Piping
Piping installation ▪ Recirculation pump. In accordance with the applicable legislation, it may be required to connect a recirculation pump in between the hot water end point and the cold water connection of the domestic hot water tank. a Cold water connection b Hot water connection c Shower d Recirculation pump... -
Page 43: To Connect The Recirculation Piping
Piping installation a DHW – hot water OUT (screw connection, ½”) b DHW – cold water IN (screw connection, ½”) 2 Install the following components (field supply) on the cold water inlet of the DHW tank: a DHW – hot water OUT (screw connection, ½”) b DHW –... - Page 44 Piping installation 3 Close all water taps after all air is purged. 4 Check for water leaks. 5 Manually operate the field-installed pressure relief valve to ensure a free water flow through the discharge pipe. EKHWET90+120B Installer reference guide R32 Split series – Domestic hot water tank 4P680077-1A –...
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Page 45: Electrical Installation
Electrical installation 9 Electrical installation In this chapter About connecting the electrical wiring ..........................9.1.1 Precautions when connecting the electrical wiring ....................9.1.2 Guidelines when connecting the electrical wiring ....................9.1.3 About electrical compliance ..........................Connections to the indoor unit .............................. 9.2.1 To connect the main power supply ........................ -
Page 46: 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 shock. ▪... -
Page 47: About Electrical Compliance
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 48: Connections To The Indoor Unit
Electrical installation 9.2 Connections to the indoor unit Item Description Power supply (main) "9.2.1 To connect the main power supply" [ 48]. Power supply (booster "9.2.2 To connect the booster heater power heater) supply" [ 49]. WLAN cartridge "9.2.3 To connect the WLAN cartridge (delivered accessory)" [ 50] 9.2.1 To connect the main power supply... -
Page 49: To Connect The Booster Heater Power Supply
Electrical installation 9.2.2 To connect the booster heater power supply Booster heater cable Wires: (2+GND)×1.5 mm² [9.4]Booster heater WARNING The booster heater MUST have a dedicated power supply and MUST be protected by the safety devices required by the applicable legislation. CAUTION To guarantee the unit is completely earthed, ALWAYS connect the booster heater power supply and the earth cable. -
Page 50: To Connect The Wlan Cartridge (Delivered As Accessory)
Electrical installation a Booster heater power supply cable b Field wiring 9.2.3 To connect the WLAN cartridge (delivered as accessory) [D] Wireless gateway 1 Insert the WLAN cartridge into the cartridge slot on the user interface of the indoor unit. WARNING In order to keep IPX3, the rubber part must be correctly fixed after WLAN installation. -
Page 51: Configuration
Configuration 10 Configuration In this chapter 10.1 Overview: Configuration................................. 10.1.1 To access the most used commands ........................10.1.2 To connect the PC cable to the switch box ......................10.2 Configuration wizard ................................10.3 Possible screens..................................10.3.1 Possible screens: Overview............................ 10.3.2 Home screen ................................ -
Page 52: To Access The Most Used Commands
Configuration ▪ Afterwards. If necessary, you can make changes to the configuration in the menu structure or the overview settings. INFORMATION When the configuration wizard is finished, the user interface will show an overview screen and request to confirm. When confirmed, the system will restart and the home screen will be displayed. - Page 53 Configuration Advanced user 1234 User pin code The User pin code is 0000. User 0000 To access the installer settings 1 Set the user permission level to Installer. 2 Go to [9]: Installer settings. To modify an overview setting Example: Modify [2‑02] from 23 to 3. Most settings can be configured via the menu structure.
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Page 54: To Connect The Pc Cable To The Switch Box
Configuration INFORMATION When you change the overview settings and you go back to the home screen, the user interface will show a popup screen and request to restart the system. When confirmed, the system will restart and recent changes will be applied. 10.1.2 To connect the PC cable to the switch box This connection between PC and hydro PCB is needed when updating the hydro software and EEPROM. -
Page 55: Possible Screens
Configuration For the setting… Refer to… Hours — Minutes Year Month System Indoor unit type (read only) "10.6.5 Installer settings" [ 82] Domestic hot water (not adjustable) Emergency [9.5.1] Booster heater capacity [9.4.1] "10.6.5 Installer settings" [ 82] Tank Heat up mode [5.6] "10.6.2 Tank" [ 70] Comfort setpoint [5.2] Eco setpoint [5.3]... -
Page 56: Home Screen
Configuration – a Home screen b Main menu screen c Lower level screens: c1: Setpoint screen c2: Detailed screen with values c3: Screen with weather-dependent curve c4: Screen with schedule 10.3.2 Home screen Press the button to go back to the home screen. You see an overview of the unit configuration and the room and setpoint temperatures. -
Page 57: Main Menu Screen
Configuration Item Description Domestic hot water Domestic hot water Measured tank temperature Disinfection / Powerful Disinfection mode active Powerful operation mode active Emergency Heat pump failure and system operates in Emergency mode. Current date and time Outdoor / quiet mode Measured outdoor temperature Quiet mode active Outdoor unit... -
Page 58: Menu Screen
Configuration Submenu Description Malfunctioning Restriction: Only displayed if a malfunction occurs. "14.4.1 To display the help text in case of malfunction" [ 103] for more information. Set the domestic hot water tank temperature. Tank Gives access to user settings such as holiday User settings mode and quiet mode. -
Page 59: Detailed Screen With Values
Configuration Example [5] Tank temperature screen °C – Tank Explanation – Possible actions on this screen Go through the list of the submenu. Go to the submenu. Adjust and automatically apply the desired temperature. Item Description Minimum temperature limit Fixed by the unit Restricted by the installer Maximum temperature limit Fixed by the unit... -
Page 60: Preset Values And Schedules
Configuration Possible actions on this screen Confirm changes and proceed. 10.4 Preset values and schedules 10.4.1 Using preset values About preset values For some settings in the system, you can define preset values. You only need to set these values one time, then reuse the values in other screens such as the scheduling screen. -
Page 61: Using And Programming Schedules
Configuration 10.4.2 Using and programming schedules About schedules Depending on your system layout and installer configuration, schedules for multiple controls may be available. You can… See… Set if a specific control needs to act according "Activation screen" in "Possible to a schedule. schedules" [ 61] Select which schedule you currently want to use for a specific control. -
Page 62: Schedule Screen: Example
Configuration Schedule/Control Description [5.F] Tank > Priority Predefined schedules: Domestic hot water schedule as priority for each month Schedule for the outdoor unit Activation screen: Not applicable. This schedule to determine priority between is only used when more than one indoor unit domestic hot water tank (e.g. - Page 63 Configuration To clear the content of the week schedule 1 Select the name of the current schedule. User defined 2 Select Delete. Delete 3 Select OK to confirm. To clear the content of a day schedule 1 Select the day of which you want to clear the content. For example Friday User defined 2 Select Delete.
- Page 64 Configuration 3 Use the left dial to select an entry and edit the entry with the right dial. You can program up to 4 actions each day. 6:00 Comfort 22:00 8:30 17:30 Comfort Note: To clear an action, set its time as the time of the previous action.
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Page 65: Weather-Dependent Curve
Configuration 5 Repeat this action for all other weekdays. — User defined To program the schedule for Saturday and copy it to Sunday 1 Select Saturday. 2 Select Edit. 3 Use the left dial to select an entry and edit the entry with the right dial. -
Page 66: 2-Points Curve
Configuration Weather-dependent curve To be able to compensate for differences in temperature, the unit relies on its weather-dependent curve. This curve defines how much the target temperature of the tank must be at different outdoor temperatures. Because the slope of the curve depends on local circumstances such as climate and the insulation of the house, the curve can be adjusted by an installer. -
Page 67: Slope-Offset Curve
Configuration 10.5.3 Slope-offset curve Slope and offset Define the weather-dependent curve by its slope and offset: ▪ Change the slope to differently increase or decrease the target temperature of the tank for different ambient temperatures. For example, if tank water temperature is in general fine but at low ambient temperatures too cold, raise the slope so that the tank temperature is heated increasingly more at decreasingly lower ambient temperatures. -
Page 68: Using Weather-Dependent Curves
Configuration Possible actions on this screen Select slope or offset. Increase or decrease the slope/offset. When slope is selected: set slope and go to offset. When offset is selected: set offset. Confirm changes and return to the submenu. 10.5.4 Using weather-dependent curves Configure weather-dependent curves as following: To define the setpoint mode To use the weather-dependent curve, you need to define the correct setpoint... -
Page 69: Settings Menu
Configuration The domestic hot water temperature is … Fine-tune with slope and offset: At regular outdoor At cold outdoor Slope Offset temperatures … temperatures … Cold ↓ ↑ ↑ ↓ Cold ↑ ↓ — ↓ "10.5.3 Slope-offset curve" [ 67]. To fine-tune the weather-dependent curve: 2-points curve The following table describes how to fine-tune the weather-dependent curve of the tank: The domestic hot water temperature is …... -
Page 70: Tank
Configuration 10.6.2 Tank Overview The following items are listed in the submenu: [5] Tank Operation Malfunctioning Setpoint screen Tank [5.1] Powerful operation User settings Information [5.2] Comfort setpoint [5.3] Eco setpoint [5.4] Reheat setpoint [5.5] Schedule [5.6] Heat up mode [5.7] Disinfection [5.8] Maximum [5.9] Hysteresis... - Page 71 Configuration INFORMATION When the Priority Schedule is set to DHW (refer to Priority schedule) and powerful operation is active, the risk of Air Conditioning (cooling /heating) and capacity shortage comfort problems is significant. In case of frequent domestic hot water operation, frequent and long Air Conditioning (cooling /heating) interruptions will happen.
- Page 72 Configuration Code Description [5.6] [6-0D] Heat up mode: ▪ 0: Reheat only: Only reheat operation is allowed. ▪ 1: Schedule + reheat: The domestic hot water tank is heated according to a schedule and between the scheduled heat up cycles, reheat operation is allowed.
- Page 73 Configuration Code Description [5.7.4] [2‑03] Tank setpoint: 55°C~max(55, [6-0E])°C [5.7.5] [2‑04] Duration: 5~60 minutes [2-03] [2-04] 00.00 01.00 22.00 23.00 24.00 [2-02] Domestic hot water temperature User setpoint temperature High setpoint temperature [2-03] t Time WARNING Be aware that the domestic hot water temperature at the hot water tap will be equal to the value selected in field setting [2-03] after a disinfection operation.
- Page 74 Configuration INFORMATION Disinfection function is restarted in case the domestic hot water temperature drops 5°C below the disinfection target temperature within the duration time. Maximum DHW temperature setpoint The maximum temperature that users can select for the domestic hot water. You can use this setting to limit the temperatures at the hot water taps.
- Page 75 Configuration WD curve When weather-dependent operation is active the desired tank temperature is determined automatically depending on the averaged outdoor temperature: low outdoor temperatures will result in higher desired tank temperatures as the cold water tap is colder and vice versa. In case of Schedule only or Schedule reheat domestic hot water...
- Page 76 Configuration Code Description [5.D] [6-01] The temperature difference determining the heat pump OFF temperature. Range: 0°C~10°C Example: setpoint (T )>maximum heat pump temperature–[6‑01] (T –[6‑01]) HP MAX BSH OFF HP MAX [6-01] HP OFF [6-00]/[6-08] HP ON = 60°C = 50°C HP MAX [6-01] = 2°C...
- Page 77 Configuration ▪ Slope-Offset (see "10.5.3 Slope-offset curve" [ 67]) In [2.E] WD curve type, you can choose which method you want to use. In [5.E] WD curve type, the chosen method is shown read-only (same value as in [2.E]). Code Description [2.E] / [5.E] ▪...
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Page 78: User Settings
Configuration Code Description [5.G] [A-01] Priority schedule: ▪ Efficient: Booster heater prohibited , except when outdoor unit is unable to do DHW (see Priority schedule) ▪ 1: Quick: Booster heater is allowed to assist heat pump during DHW production [5.H] [8-03] When Quick is selected, the booster heater can start after a delay timer to assist the heat... - Page 79 Configuration Typical workflow Using holiday mode typically consists of the following stages: Activating the holiday mode. Setting the starting date and ending date of your holiday. To check if holiday mode is activated and/or running is displayed on the home screen, holiday mode is active. To configure the holiday 1 Activate the holiday mode.
- Page 80 Configuration To check if quiet mode is active is displayed on the home screen, quiet mode is active. To use quiet mode 1 Go to [7.4.1]: User settings > Quiet > Mode. 2 Do one of the following: — If you want to… Then…...
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Page 81: Information
Configuration 3 Define the restrictions (time + level) to be used after midday (PM): ▪ [7.4.4.4] PM Restricted time Example: From 3 p.m. to 7 p.m. ▪ [7.4.4.5] PM Restricted level Example: Most quiet Possible outcomes when quiet mode is set to Automatic If... -
Page 82: Installer Settings
Configuration Reset Reset the configuration settings stored in the MMI (user interface of the indoor unit). Example: Holiday settings. INFORMATION This does not reset the configuration settings and field settings of the indoor unit. Code Description [8.A] Reset the MMI EEPROM to factory default Possible read-out information In menu…... - Page 83 Configuration Configuration wizard After first power ON of the system, the user interface will guide you using the configuration wizard. This way you can set the most important initial settings. This way the unit will be able to run properly. Afterwards, more detailed settings can be done via the menu structure if required.
- Page 84 Configuration Operation Code Description [9.4.4] [4-03] Defines the operation permission of the booster heater depending on ambient, domestic hot water temperature or operation mode of heat pump. [9.4.4] [4-03] ▪ 0 Restricted: Booster heater operation is NOT allowed except for "Disinfection function" and "Powerful domestic water heating".
- Page 85 Configuration To keep energy consumption low, we recommend to set Emergency to Manual if the house is unattended for longer periods. Code Description [9.5.1] [4-06] ▪ 0: Manual ▪ 1: Automatic INFORMATION The auto emergency setting can be set in the menu structure of the user interface only.
- Page 86 Configuration Code Description [9.B.3] [1-0A] Averaging time: ▪ 0: No averaging ▪ 1: 12 hours ▪ 2: 24 hours ▪ 3: 48 hours ▪ 4: 72 hours Auto restart Auto restart When power returns after a power supply failure, the auto restart function reapplies the user interface settings at the time of the power failure. Therefore, it is recommended to always enable the function.
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Page 87: Commissioning
Configuration INFORMATION Protective functions – "Installer-on-site mode". The software is equipped with protective functions, such as tank disinfection. The unit automatically runs these functions when necessary. During installation or service this behaviour is undesired. Therefore, the protective functions can be disabled: ▪... -
Page 88: User Profile
Configuration [A] Commissioning Information Installer settings [A.1] Operation test run Commissioning [A.2] Actuator test run User profile Operation About commissioning See: "11 Commissioning" [ 93] 10.6.7 User profile [B] User profile: See "To change the user permission level" [ 52]. [B] User profile Installer settings Commissioning User profile... - Page 89 Configuration [D] Wireless gateway User profile Operation [D.1] Mode Wireless gateway [D.2] Reboot Malfunctioning Room [D.3] WPS [D.4] Remove from cloud [D.5] Home network connection [D.6] Cloud connection About the WLAN cartridge The WLAN cartridge connects the system to the internet. The user can then control the system via the ONECTA app.
- Page 90 Configuration WPS: Connect the WLAN cartridge to the router. Code Description [D.3] WPS: ▪ ▪ INFORMATION You can only use this function if it is supported by the software version of the WLAN, and the software version of the ONECTA app. Remove from cloud: Remove the WLAN cartridge from the cloud.
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Page 91: Menu Structure: Overview User Settings
Configuration 10.7 Menu structure: Overview user settings Tank [7.2] Time/date Powerful operation Hours Comfort setpoint Minutes Eco setpoint Year Reheat setpoint Month Schedule (**) Heat up mode Daylight savings time (**) Disinfection Format (**) Maximum (**) Hysteresis [7.3] Holiday (**) Setpoint mode Activation (**) -
Page 92: Menu Structure: Overview Installer Settings
Configuration 10.8 Menu structure: Overview installer settings [9] Installer settings [9.4] Booster heater Configuration wizard Capacity Quick mode timer Booster heater Operation Emergency Power consumption control Auto restart [9.5] Emergency Power saving function Emergency Disable protections Overview field settings Export MMI settings [9.9] Power consumption control Power consumption control Type... -
Page 93: Commissioning
11 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 94: Checklist Before Commissioning
Commissioning NOTICE ALWAYS operate the unit with thermistors and/or pressure sensors/switches. If NOT, burning of the compressor might be the result. NOTICE ALWAYS complete the refrigerant piping of the unit before operating. If NOT, the compressor will break. 11.3 Checklist before commissioning 1 After the installation of the unit, check the items listed below. -
Page 95: Operation Test Run
Commissioning To perform an actuator test run. 11.4.1 Operation test run Purpose Perform test runs on the unit and monitor the tank temperature to check if the unit is working correctly. The following test run should be made: ▪ Tank To perform an operation test run Conditions: Make sure all operation is disabled. - Page 96 Commissioning 2 Go to [A.2]: Commissioning > Actuator test run. 3 Select Booster heater. 4 Select OK to confirm. Result: The actuator test run starts. It stops automatically when ready (±30 min). To stop the test run manually: — 1 In the menu, go to Stop test run. 2 Select OK to confirm.
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Page 97: Hand-Over To The User
Hand-over to the user 12 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: ▪ Fill in the installer setting table (in the operation manual) with the actual settings. ▪... -
Page 98: Maintenance And Service
General maintenance/inspection checklist. Next to the maintenance instructions in this chapter, a general maintenance/inspection checklist is also available on the Daikin Business Portal (authentication required). The general maintenance/inspection checklist is complementary to the instructions in this chapter and can be used as a guideline and reporting template during maintenance. -
Page 99: Yearly Maintenance Indoor Unit: Instructions
Maintenance and service ▪ Anode 13.2.2 Yearly maintenance indoor unit: instructions Pressure relief valve of the domestic hot water tank (field supply) Open the valve. CAUTION Water coming out of the valve may be very hot. ▪ Check if nothing blocks the water in the valve or in between piping. The water flow coming from the relief valve must be high enough. -
Page 100: To Drain The Domestic Hot Water Tank
Maintenance and service NOTICE The booster heater sealing must be replaced after every check. Tighten the booster heater screws to 10 N•m of torque. 13.3 To drain the domestic hot water tank DANGER: RISK OF BURNING/SCALDING The water in the tank can be very hot. Prerequisite: Stop the unit operation via the user interface. -
Page 101: Troubleshooting
Troubleshooting 14 Troubleshooting In this chapter 14.1 Overview: Troubleshooting ..............................101 14.2 Precautions when troubleshooting............................101 14.3 Solving problems based on symptoms........................... 102 14.3.1 Symptom: Hot water does NOT reach the desired temperature ................. 102 14.3.2 Symptom: The pressure at the tapping point is temporarily unusually high ............102 14.3.3 Symptom: Tank disinfection function is NOT completed correctly (AH-error) ............ -
Page 102: Solving Problems Based On Symptoms
Troubleshooting 14.3 Solving problems based on symptoms 14.3.1 Symptom: Hot water does NOT reach the desired temperature Possible causes Corrective action One of the tank temperature sensors is See the service manual of the unit for broken. the corresponding corrective action. 14.3.2 Symptom: The pressure at the tapping point is temporarily unusually high Possible causes Corrective action... -
Page 103: To Display The Help Text In Case Of A Malfunction
Troubleshooting INFORMATION See the service manual for: ▪ The complete list of error codes ▪ A more detailed troubleshooting guideline for each error 14.4.1 To display the help text in case of a malfunction In case of a malfunction, the following will appear on the home screen depending on the severity: ▪... - Page 104 Troubleshooting Error code Description E3-24 High pressure sensor abnormality E5-00 OU: Overheat of inverter compressor motor E6-00 OU: Compressor startup defect E7-00 OU: Malfunction of outdoor unit fan motor E8-00 OU: Power input overvoltage EA-00 OU: Cool/heat switchover problem EC-00 Abnormal increase tank temperature F3-00 OU: Malfunction of discharge pipe temperature...
- Page 105 Troubleshooting Error code Description P4-00 OU: Malfunction of radiating fin temperature sensor PJ-00 Capacity setting mismatch U0-00 OU: Shortage of refrigerant U2-00 OU: Defect of power supply voltage U4-00 Indoor/outdoor unit communication problem U5-00 User interface communication problem U6-38 Extension/hydro communication problem U7-00 OU: Transmission malfunction between main CPU- INV CPU...
- Page 106 Troubleshooting INFORMATION If an U8‑04 error occurs, the error can be reset after a successful update of the software. If the software is not successfully updated then you must make sure that your USB device has the FAT32 format. INFORMATION If the booster heater overheats and is disabled by the thermostatic safety, the unit will not give an error directly.
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Page 107: Technical Data
Technical data 15 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). In this chapter 15.1... -
Page 108: Piping Diagram: Indoor Unit
Technical data 15.1 Piping diagram: Indoor unit 3D138207 a1 Domestic hot water – hot water out Thermistors: a2 Domestic hot water – cold water in R3T Thermistor heat exchanger – Liquid pipe b1 Liquid stop valve R5T Tank thermistor b2 Gas stop valve c Booster heater EKHWET90+120B Installer reference guide... -
Page 109: Wiring Diagram: Indoor Unit
Technical data 15.2 Wiring diagram: Indoor unit See the internal wiring diagram supplied with the unit (on the inside of the indoor unit switch box cover). The abbreviations used are listed below. Legend Main PCB # Overcurrent fuse booster heater FU1 (A1P) Fuse (5 A 250 V for PCB) Contactor booster heater... - Page 110 Technical data Terminal strip (3) Notes (3) Notes Field wiring terminal for AC Booster heater power supply terminal strip client Wiring terminal for DC (Indoor) Field wiring terminal for AC (Outdoor) Booster heater power supply terminal strip Earth wiring Field supply Option Not mounted in switch box Wiring depending on model...
- Page 111 Technical data Electrical connection diagram For more details, please check the unit wiring. STANDARD PART Power supply OUTDOOR UNIT Only for normal power supply installation 3 core unit power supply: 230 V + earth X1M: L-N-earth Only for preferential kWh rate power supply installation unit preferential kWh rate power supply: 3 core 230 V + earth...
- Page 112 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 113 Field settings table Applicable indoor units EKHWET90BAV3 EKHWET120BAV3 4P688157-1 - 2021.11...
- Page 114 Installer setting at variance with Field settings table default value Breadcrumb Field code Setting name Range, step Date Value Default value Tank [6-0A] Comfort setpoint 30~[6-0E]°C, step: 1°C 50°C [6-0B] Eco setpoint 30~min(50, [6-0E])°C, step: 1°C 45°C [6-0C] Reheat setpoint 30~min(50, [6-0E])°C, step: 1°C 45°C [6-0D]...
- Page 115 Installer setting at variance with Field settings table default value Breadcrumb Field code Setting name Range, step Date Value Default value 9.5.1 [4-06] Emergency 0: Manual 1: Automatic └─ Power consumption control 9.9.1 [4-08] Power consumption control 0: No limitation 1: Continuous 9.9.2 [4-09]...
- Page 116 Installer setting at variance with Field settings table default value Breadcrumb Field code Setting name Range, step Date Value Default value [7-00] Domestic hot water booster heater overshoot temperature. 0~4°C, step: 1°C 0°C [7-01] Domestic hot water booster heater hysteresis. 2~40°C, step: 1°C 2°C [8-03]...
- Page 120 4P680077-1A 2022.11 Verantwortung für Energie und Umwelt...