Table of Contents
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Table of Contents
Summary of Contents for Schneid MR-12
- Page 2 All rights reserved. This manual has been issued by SCHNEID GesmbH for use. SCHNEID GesmbH reserves the right to revisions and amendments of this manual at any time and with no obgligation to announce or to notify the users about such amendments made..
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Page 3: Table Of Contents
Table of Contents Table of Contents 1 Safety notes ........................5 Danger of scalding:..........................5 Danger of freezing:..........................5 2 Regulator .......................... 6 2.1 Key allocation............................6 2.2 Modes..............................7 2.3 Correction of Day/Night Mode......................8 Day mode – Correction of day mode...................... 8 Lowering Mode –... - Page 4 Table of Contents Heating times/Lowering times....................... 14 3.6 Buffer (heating boiler)........................14 Rotational speed of pump........................14 Upper temperature..........................14 Upper required temperature......................... 14 Lower temperature..........................14 Lower required temperature......................... 14 Buffer loading times..........................15 Rotational speed of pump........................15 Collector temperature...........................
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Page 5: Safety Notes
1 Safty notes Safety notes Danger of scalding: Some parts of this system may reach temperatures exceeding 55°C (for thresholds of burning, see EN 563). Be sure to point out all possibly existing dangers (such as touchable surfaces, high temperatures of used water) to all persons operating this system. -
Page 6: Regulator
2 Regulator Regulator Key allocation Seite 6 © 2016... -
Page 7: Modes
2 Regulator Modes A lamp on the selector switch indicates the current mode. The newly selected mode will be displayed on the regulator screen when changing another mode. Off/Antifreeze The regulator’s operation will be deactivated except of the antifreeze switch function. The antifreeze switch function will be activated when the external temperature falls below the antifreeze temperature. -
Page 8: Correction Of Day/Night Mode
2 Regulator Correction of Day/Night Mode Day mode – Correction of day mode The day mode must be set with the rotary button on the top right. The value can be set from -4°C to +4°C and causes a permanent increase in the heating circuits’ temperature of the initial operation during day mode. -
Page 9: Regulator Menu
3 Regulator Menu Regulator Menu Main Menu The main menu shows all the functions of the regulator. Apart from that, the regulator indicates the current modes as well as the current temperatures of the individually controlled components. CAUTION: Menu items which do n ot open are not accessible for your level of authorization. For changes and questions, consult your district heating operator. -
Page 10: Operation Modes Of Heating Circuits
3 Regulator Menu Operation modes of heating circuits The heating circuit is not activated The heating circuit is in normal operation mode Residual power → electric water heater is preferred; the heating circuit is reset The heating circuit is in lowering mode Secondary warm-water setting →... -
Page 11: District Heating
3 Regulator Menu District Heating The transfer station is called as district heating; it transfers the heat energy via a heat exchanger. Primary Valve Indicates as to how far the district heating valve is opened. Max. return temperature The set highest return temperature into the district heating network. -
Page 12: Minimum Boiler Temperature (Default 45°C)
3 Regulator Menu Minimum boiler temperature (default 45°C) The minimum temperature shows the lower limit for the charging status of the boiler (measured on the upper boiler) and causes a subsequent charging, if the temperature has fallen below. Lower temperature This indicates the current lower boiler temperature. -
Page 13: Adjustment Mode Heating Circuit
3 Regulator Menu NACHR Warmwassernachrang → heating during boiler charging OFF FROSTS Frost protection is active SPERRE Lock → e.g. within restricted hours (= OFF) MANUELL manual AUSHEIZ Screed heating → floor drying is active EXTSOLL external setpoint (= ON) KÜHLEN when there is a district cooling station and the circuit is in operation. -
Page 14: Heating Times/Lowering Times
3 Regulator Menu Switch-off temperature of day mode (default: 18°C) If the mean value of the external temperature exceeds this value during day mode, the respective heating circuit will be switched off (heating circuit pump off, mixing valve CLOSED). Switch-off temperature of lowering mode (default: 10°C) If the mean value of the external temperature exceeds this value during lowering mode, the respective heating circuit will be switched off (heating circuit pump off, mixing valve CLOSED). -
Page 15: Buffer Loading Times
3 Regulator Menu This hysteresis is used for calculating the lower required buffer temperature. The lower required temperature of the buffer is calculated with the maximum return temperature of district heating minus this hysteresis. Buffer loading times The loading times of the buffer can be set here. Solar The solar pump switches on as soon as the collector temperature is higher than the buffer temperature in addition to the hysteresis. -
Page 16: Release
3 Regulator Menu Release This indicates whether the external heat generator has been switched on. External energy This indicates the available temperature of external energy generators. Secondary required initial operation This indicates the current secondary required initial operation. If the item “Switching of generator” has been set here, the “hysteresis for switching on“... -
Page 17: Intermediate Circuit Pump
3 Regulator Menu Intermediate circuit pump The intermediate circuit pump will switch on during the operation of a circuit. It is the pump of the main system. Mode This indicates whether the intermediate circuit pump is activated or deactivated. Secondary required initial operation This indicates the required secondary initial operation of the transfer station. -
Page 18: Room Remote Control
A room sensor is integrated in the remote control, which can be used for applying various regulating programs for heating as well as for optimizing the SCHNEID regulator. CAUTION: The selector switch of the regulator will have priority over the remote control if the selector switch of the regulator is set to OFF/Antifreeze, boiler charging or maintenance. -
Page 19: Remote Control Fbr7
It is possible for each heating circuit to connect a separate remote control. The following functions can be selected via the remote control: The remote control SCHNEID-FBR7 is compatible with the SCHNEID-Controllers of MODUL-Series MR08/MR12 with Communication-Base-Board CM08. The touch screen control panel always shows the time, the actual room temperature and the operating status. -
Page 20: Internal Level
5 Internal Level Internal Level 5.1 Entrance into the level Hold both arrow keys pressed in this main menu until the window Service Level appears on the regulator. 5.2 Service code The service code is necessary for internal work on the regulator. -
Page 21: Troubleshooting
6 Troubleshooting Troubleshooting Menu items cannot be opened Individual menu items which do not open are not accessible in your current level of authorization. For changes and questions, please consult your district heating operator. No temperature display Please note that temperature will only be indicated if a temperature sensor is connected, and in full working condition, respectively. - Page 22 7 Index Index Automatic Mode........................7 Boiler............................11 Boiler Mode..........................7 Buffer (heating boiler)......................14 Buffer loading times......................15 Circulation..........................12 Collector temperature......................15 Correction of Day/Night Mode....................8 Counter..........................11 Danger of freezing........................5 Danger of scalding.........................5 Day mode – Correction of day mode..................8 District Heating........................11 Entrance into the level......................20 External energy........................16 Generator..........................15 Heating circuits........................12...
- Page 23 7 Index OFF/Antifreeze........................13 Operation modes of boiler....................10 Operation modes of buffer....................10 Operation modes of circulation....................10 Operation modes of generator.....................10 Operation modes of heating circuits..................10 Operation modes of intermediate circuit pump..............10 Operation modes of solar heating..................10 Operation times........................12 Party Mode..........................7 Power...........................11 Power output limitation......................9 Primary Valve........................11 Regulator Menu........................9...