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IVAR SFWC Installation And Operating Instructions Manual

Fresh water controller
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Fresh Water Controller SFWC
Installation and operating instructions
Read carefully before installation, commissioning and operation

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Summary of Contents for IVAR SFWC

  • Page 1 Fresh Water Controller SFWC Installation and operating instructions Read carefully before installation, commissioning and operation...

  • Page 2: Table Of Contents

    Contents A. - Safety Instructions 4.4.5. - Circulation period A.1. - EC declaration of conformity 4.4.6. - Tap support A.2. - General instructions 4.4.7. - Min storage temp A.3. - Explanation of symbols 4.4.8. - Tap support calibration A.4. - Changes to the unit 4.10.

  • Page 3: Safety Instructions

    Safety Instructions A.1. - EC declaration of conformity By affi xing the CE mark to the unit the manufacturer declares that the SFWC conforms to the following relevant safety regulations: EC low voltage directive 2006/95/EC EC electromagnetic compatibility directive 2004/108/EC Conformity has been verifi ed and the corresponding documentation and the EC declaration of conformity are kept on fi le by the manufacturer.

  • Page 4: Changes To The Unit

    Safety instructions A.4. - Changes to the unit Changes to the unit can compromise the safety and function of the unit or the entire system. Danger - Changes, additions to or conversion of the unit are not permitted without the written permis- sion from the manufacturer - It is likewise forbidden to install additional components that have not been tested together with the unit...

  • Page 5: Description Of Controller

    Description of controller B.1. - Specifications Electrical specifications: Mains voltage 230VAC +/-10% Mains frequency 50 - 60Hz Power consumption 1,5W - 2,0W Internal fuse 2A slow blow 250V Protection category IP40 Protection class Overvoltage Category Degree of Pollution Category mechanisches Relais 460VA für AC1 / 460W für AC3 0-10V output, tolerance 10%, 10 k Ω...

  • Page 6: About The Controller

    Description of controller B.3. - About the controller The Fresh water controller SFWC facilitates effi cient use and function control through of your fresh water system. Tap water temperature is regulated fast and precise. The device is impressive most of all for its functionality and simple, almost self-explanatory operation. For each step in the input process the individual entry keys are assigned to appropriate func- tions and explained.

  • Page 7: Hydraulic Variants

    Description of controller B.6. - Hydraulic variants The following illustrations should be viewed only as schematic diagrams showing the respective hydraulic systems, and do not claim to be complete. The controller does not replace safety devices under any circumstances. Depending on the specifi c application, additional system components and Caution safety components may be mandatory, such as check valves, non-return valves, safety temperature limiters, scalding protectors, etc., and must there-...

  • Page 8: Installation

    Installation Wall installation Install the controller only in dry areas and under the ambient conditions described under 2.1 “Specifi cations”. Carry out the following steps: Caution 1.Unscrew cover screw completely C.1.1 2.Carefully pull upper part of housing from lower part. 3.Set upper part of housing aside, being sure not to touch the electronics when doing so.

  • Page 9: Electrical Connection

    Installation Electrical connection Before working on the unit, switch off the power supply and secure it against being switched on again! Check for the absence of power! Electrical connections may only be made by a specialist and in Danger compliance with the applicable regulations. Do not use the controller if the housing shows visible damage.
  • Page 10 Installation 5. Connect the female connector block ‘s screw driver C.2.1.c clamp connections as described in the terminal connection plans. When using stranded cables, use a small screw dri- ver and push the orange buttons while inserting (see fi g. C.2.1.c). When using solid cable or end splice, just push the cables in (see fi g.

  • Page 11: Installing The Temperature Sensors

    Installation C.1. - Installing the temperature sensors The controller operates with Pt1000 temperature sensors which are accurate to the degree, thus ensuring optimal control of system functions. Position the sensor precisely in the area to be measured! It is recommended that at least 20 cm of the sensor cable at the sensor are installed inside the pipe insulation.

  • Page 12: Terminal Connection Diagrams

    Installation D. - Terminal connection diagrams Sensor side Mains side max. 12V 230VAC Caution Danger * PELV connection Mains voltages 230VAC 50-60Hz Low voltage max. 12VAC/DC connection in Connection in the right-hand terminal the left-hand terminal compartment! compartment! Terminal: Connection for: Terminal: Connection for: Circulation (opt.)

  • Page 13: Operation

    Operation E.1. - Display and input The display (1), with its extensive text and graphics mode, is almost selfexplanatory, allowing easy opera- tion of the controller. The LED (2) lights up green when a relay is switched The LED (2) lights up red when operating mode “Off” is set.

  • Page 14: Menu Sequence And Menu Structure

    Operation E.2. - Menu sequence and menu structure The graphics or overview mode appears when no key has been press for 2 minutes, or when the main menu is exited by pressing “esc“. Pressing a key in graphics or overview mode takes you directly to the main menu.

  • Page 15: Parametrisation

    Parametrisation F.1. - Commissioning help The fi rst time the controller is turned on and after the language and time are set, a query appears as to wh- ether you want to parametrise the controller using the commissioning help or not. The commissioning help can also be terminated or called up again at any time in the special functions menu.

  • Page 16: Calibration

    Parametrisation F.3. - Calibration When the tap support is activated (during commissioning or in the menu „Circulation“), a calibra- tion process is started after the commissioning. To ensure the correct operation, calibration is also scheduled to start on every Sunday at 3:00 AM. During commissioning, the calibration must not be interrupted.

  • Page 17: Measurements

    Measurement values 1. - Measurement values The menu “1. Measurement values” serves to dis- play the currently measured temperatures. The menu is closed by pressing “esc” or selecting “Exit measurement values”. If “Error” appears on the display instead of the measurement value, then there may be a defective or incorrect temperature sensor.

  • Page 18: Statistics

    Statistics 2. - Statistics The menu “2. Statistics” is used for function control and long-term monitoring of the system. The submenus described under 7.1-7.6 are available. The menu is closed by pressing “esc” or selecting “Exit statistics”. For system data statistics it is essential for the time to be set accurately on the control- ler.

  • Page 19: Operating Mode

    Operating modes 3. - Operating mode In menu “3. Operating modes” the controller can either be placed in automatic mode, switched off, or placed in a manual operating mode. The menu is closed by pressing “esc” or selecting “Exit operating modes”. 3.1.

  • Page 20: Settings

    4.1. - Tset Setpoint at VFS sensor The controller SFWC attempts to reach and maintain a constant temperature in the circulation by controlling the speed of the hot water pump. 4.2. - Tmax Maximum tap water temperature at VFS Maximum allowable temperature at VFS.

  • Page 21: Circulation

    Settings 4.4. - Circulation Circulation settings are only availabe when the circulation function was selected for relay 1 in special functions. Caution 4.4.1. - Circulation Mode of circulation When the mode “Request” is active, the circulation pump is switched on after a corresponding tapping of water has occured and stays on until the circulation target temperature (Circ Tmin + hysteresis) is reached at the circulation sensor.

  • Page 22: Circulation Period

    Settings 4.4.5. - Circulation period Period where the circulation pump is enabled Set the operation times of the circulation pump. 3 different periods can be set for every weekday, which can also be copied to other days. In periods not defi ned circulation is inactive. The set periods are only used in the circulation mode “Periods”.

  • Page 23: Protections / Protective Functions

    “Exit”. 5.1. - Antilegionella With the AL-function activated, the SFWC makes it possible to heat the storage in selectable intervals, (AL interval) for the set residence time (AL resid. time), starting at the set time (AL start time) until the temperature AL Tset is reached. The temperature measured at S5 has a reference of AL Tset +5°.

  • Page 24: Limescale Protection

    Protective functions 5.2. - Limescale Protection To prevent the accumulation of limescale, the circulation pump can continue to rinse the heat exchanger after a tapping for at least 5 seconds or for longest 30 seconds or till the VFS sensor drops below Tset. 5.3.

  • Page 25: Special Functions

    Special functions 6. - Special functions Menu “6. Special functions” is used to set basic items and expanded functions. Other than the time all settings may only be made by a specialist. Caution The menu is closed by pressing “esc” or selecting “Exit special functions”.

  • Page 26: 0-10V On / Pwm On

    Special functions 6.1.5. - 0-10V on / PWM on This voltage / signal is needed to turn the pump on at minimum speed. 6.1.6. - 0-10V Max / PWM Max This determines the the output voltage / signal for the highest speed of the pump, that is used e.g.

  • Page 27: Speed Control

    Special functions 6.2. - Speed control R1 / R2 The settings in this menu are used to limit the speed of connected pumps. 6.2.1. - max. speed The maximum speed of the pump is specifi ed here. During the setting the pump runs at the specifi ed speed and the fl ow rate can be determined.

  • Page 28: Sensor Calibration

    Special functions 6.4. - Sensor calibration Deviations in the temperature values displayed, for example due to cables which are to long or sensors which are not positioned optimally, can be compensated for manually here. The settings can be made for each individual sensor in steps of 0.5°C. Settings are only necessary in special cases at the time of initial commissioning by the specialist.

  • Page 29: Daylight Saving Time

    Special functions 6.8. - Daylight saving time When this function is active, the controller’s clock changes automatically to and from DST (DST, Daylight Savings Time). 6.9. - Sleep mode When active, the displays backlight is switched off after 2 minutes of inactivity. If a message is waiting, the backlight is not switched off.

  • Page 30: Menu Lock

    Menu lock 7. - Menu lock Menu “7. Menu lock” can be used to secure the control- ler against unintentional changing of the set values. The menu is closed by pressing “esc” or selecting “Exit menu lock”. 7.1. - Menu lock The menus listed below remain completely accessible despite the menu lock being activated, and can be used to make adjustments if necessary: 1.

  • Page 31: Service Values

    Service values 8. - Service values The menu “8. Service values” can be used for remote diagnosis by a specialist or the manufacturer in the event of an error, etc. Enter the values at the time when the error occurs e.g. in the table. Caution The menu can be closed at any time by pressing “esc”.

  • Page 32: Language

    Language 9. - Language Menu “9. Language” can be used to select the language for the menu guidance. This is queried automatically during initial commissioning. The choice of languages may differ, however, depend- ing on the device design. Language selection is not available in every device design!

  • Page 33: Malfunctions With Error Messages

    Malfunctions Z.1 Malfunctions with error messages If the controller detects a malfunction, the red light fl ashes and the warning symbol also appears in the display. If the error is no longer present, the warning symbol changes to an (LED fl ashes + info symbol and the red light no longer fl ashes.

  • Page 34: Replacing The Fuse

    Malfunctions Z.2 Replacing the fuse Repairs and maintenance may only be performed by a specialist. Before working on the unit, switch off the power supply and secure it against being Danger switched on again! Check for the absence of power! Only use the supplied spare fuse or a fuse of the same design with the following specifi cations: T2A 250V Danger...

  • Page 35: Maintenance

    Maintenance Z.3. Maintenance In the course of the general annual maintenance of your heating system you should also have the functions of the controller checked by a specialist and have the settings optimised if necessary. Caution Performing maintenance: - Check the date and time - Assess/check plausibility of analyses sell also „2.1.
  • Page 36 Hydraulic variant set: Commissioned on: Commissioned by: Notes: Final declaration: Although these instructions have been created with the greatest possible care, the possibility of incorrect or incomplete information cannot be excluded. Subject as a basic principle to errors and technical changes.

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