Buderus Logamatic SC40 Installation And Servicing Instructions
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Buderus Logamatic SC40 Installation And Servicing Instructions

Buderus Logamatic SC40 Installation And Servicing Instructions

Solar thermal controller
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Installation and servicing
instructions
Logamatic SC40
Solar thermal
controller
For Heating Engineers
Please read carefully
prior to installation.

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Summary of Contents for Buderus Logamatic SC40

  • Page 1 Installation and servicing Solar thermal controller instructions Logamatic SC40 For Heating Engineers Please read carefully prior to installation.

  • Page 2: Table Of Contents

    Service level menu functions Language selection Time, setting Select system Settings System operating mode Fault diagnosis Reset Faults Faults indicated on the display Faults not indicated on the display Logamatic SC40 - Technical specifications are subject to change without prior notice.

  • Page 3: Safety Instructions And Explanation Of Symbols

    V Ensure that installation and operation of the device conforms to the local standards and guide- lines. Disposal V Dispose of packaging in an environmentally responsible manner. V When replacing components, dispose of the old parts in an environmentally responsible manner. Logamatic SC40 - Technical specifications are subject to change without prior notice.

  • Page 4: Symbols

    Notes are identified by the symbol shown on the left. They are bordered by horizontal lines above and below the text. Notes contain important information in cases where there is no risk of personal injury or damage to property. Logamatic SC40 - Technical specifications are subject to change without prior notice.

  • Page 5: Details Of The Product

    – Pump status (as simple schematic diagram not representative of actual system) – System values (e.g. temperatures) – Selected functions Fig. 2 Example of screen display – Fault messages Logamatic SC40 - Technical specifications are subject to change without prior notice.

  • Page 6: Specifications

    0.387 7.116 0.591 3.606 0.339 Tab. 2 Resistances of the temperature sensors The temperature sensors must be disconnected from the controller for their resistanc- es to be measured. Logamatic SC40 - Technical specifications are subject to change without prior notice.

  • Page 7: Regulations

    This device complies with the applicable EN requirements. V Observe the following regulations and guidelines: – Local regulations and requirements of the electricity supplier concerned. – Commercial/industrial codes and regulations and fire regulations. Logamatic SC40 - Technical specifications are subject to change without prior notice.

  • Page 8: Installation (For Engineers Only)

    2), drill the holes and insert wall plugs. Straighten the controller and screw firmly in place through the lower mounting holes, left and right. 5 mm 7747006072-01.1 SD Fig. 3 Mounting the controller on a wall Top fixing hole Bottom fixing holes Logamatic SC40 - Technical specifications are subject to change without prior notice.

  • Page 9: Installing Diverter Valve For Return Boost (Optional)

    Specifications and pressure loss characteristics of diverter valve Fig. 4 Installation diagram for combination cylinder return boost Cylinder temperature sensor S6 Solar thermal controller Logamatic SC40 Return temperature sensor S3 Heating return Boiler return Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 10 V Provide temperature sensor S3 with insulation at least 20 cm long ( Fig. 5, item 3). V Fit temperature sensor S6 in the position provided on the cylinder (see installation instructions for cylinder). Logamatic SC40 - Technical specifications are subject to change without prior notice.

  • Page 11: Fitting A Heat Meter (Optional)

    Rated volumetric Number of collectors flow rate 1 - 5 0.6 m³/h 6 - 10 1.0 m³/h 11 - 15 1.5 m³/h Tab. 5 Rated volumetric flow rate Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 12 EN 1434 or determining yield. Calculation of yield requires a device with a calibration certificate, usage data (water volume, room heating heat requirement), weather data and system simulation. V Wire up electrical connections as shown in Section 4.4. Logamatic SC40 - Technical specifications are subject to change without prior notice.

  • Page 13: Electrical Connections

    7747006072-02.1 SD Fig. 8 Feeding in and securing cables Cable grip reversed Cable grip Cable entry from below Cable entry from the rear Fuse, 2.5 A slow (2 off) Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 14 V Connect the leads according to the desired configuration diagram ( pages 15 - 41). V After completing the work, close the controller by replacing the cover and tightening the securing screw. Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 15 Cylinder bottom temperature sensor Cylinder top temperature sensor (optional) Cylinder centre temperature sensor (optional) Flow heat meter WMZ temperature sensor (optional) Return heat meter temperature sensor (optional) WMZ Heat meter (optional) Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 16 Cylinder centre temperature sensor (optional) Collector temperature sensor FSK, field 2 Flow heat meter WMZ temperature sensor (optional) Return heat meter temperature sensor (optional) WMZ Heat meter (optional) Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 17 Cylinder centre temperature sensor (optional) Temperature sensor for external heat exchanger Flow heat meter WMZ temperature sensor (optional) Return heat meter temperature sensor (optional) WMZ Heat meter (optional) Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 18 Collector temperature sensor FSK, field 2 Temperature sensor for external heat exchanger Flow heat meter WMZ temperature sensor (optional) Heat meter WMZ return temperature sensor (optional) WMZ Heat meter (optional) Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 19 Cylinder 1 bottom temperature sensor Cylinder 1 top temperature sensor Cylinder 2 bottom temperature sensor Flow heat meter WMZ temperature sensor (optional) Return heat meter temperature sensor (optional) WMZ Heat meter (optional) Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 20 Cylinder 2 bottom temperature sensor Collector temperature sensor FSK, field 2 Flow heat meter WMZ temperature sensor (optional) Return heat meter temperature sensor (optional) WMZ Heat meter (optional) Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 21 Cylinder 2 bottom temperature sensor Temperature sensor for external heat exchanger Flow heat meter WMZ temperature sensor (optional) Return heat meter temperature sensor (optional) WMZ Heat meter (optional) Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 22 Collector temperature sensor FSK, field 2 Temperature sensor for external heat exchanger Flow heat meter WMZ temperature sensor (optional) Return heat meter temperature sensor (optional) WMZ Heat meter (optional) Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 23 Heating return temperature sensor Cylinder top temperature sensor (optional) Cylinder centre temperature sensor Flow heat meter WMZ temperature sensor (optional) Return heat meter temperature sensor (optional) WMZ Heat meter (optional) Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 24 Cylinder top temperature sensor (optional) Collector temperature sensor FSK, field 2 Cylinder centre temperature sensor Flow heat meter WMZ temperature sensor (optional) Return heat meter temperature sensor (optional) WMZ Heat meter (optional) Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 25 Cylinder top temperature sensor (required for shutdown at 95 °C) Cylinder centre temperature sensor Temperature sensor on external heat exchanger (heat meter flow) Return heat meter temperature sensor (optional) WMZ Heat meter (optional) Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 26 Collector temperature sensor FSK, field 2 Cylinder centre temperature sensor Temperature sensor on external heat exchanger (heat meter flow) Return heat meter temperature sensor (optional) WMZ Heat meter (optional) Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 27 Cylinder 1 top temperature sensor (optional) Cylinder 2 bottom temperature sensor Cylinder 2 top temperature sensor Flow heat meter WMZ temperature sensor (optional) Return heat meter temperature sensor (optional) WMZ Heat meter (optional) Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 28 Cylinder 1 top temperature sensor (optional) Cylinder 2 bottom temperature sensor Cylinder 2 top temperature sensor Flow heat meter WMZ temperature sensor (optional) Return heat meter temperature sensor (optional) WMZ Heat meter (optional) Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 29 Collector temperature sensor FSK, field 2 Cylinder 2 top temperature sensor Flow heat meter WMZ temperature sensor (optional) Return heat meter temperature sensor (optional) WMZ Heat meter (optional) Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 30 Temperature sensor for external heat exchanger Cylinder 2 bottom temperature sensor Cylinder 2 top temperature sensor Flow heat meter WMZ temperature sensor (optional) Return heat meter temperature sensor (optional) WMZ Heat meter (optional) Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 31 Temperature sensor for external heat exchanger Cylinder 2 bottom temperature sensor Cylinder 2 top temperature sensor Flow heat meter WMZ temperature sensor (optional) Return heat meter temperature sensor (optional) WMZ Heat meter (optional) Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 32 Cylinder 2 bottom temperature sensor Cylinder 1 top temperature sensor (optional) Flow heat meter WMZ temperature sensor (optional) Return heat meter temperature sensor (optional) WMZ Heat meter (optional) Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 33 Collector temperature sensor FSK, field 2 Cylinder 1 top temperature sensor (optional) Flow heat meter WMZ temperature sensor (optional) Return heat meter temperature sensor (optional) WMZ Heat meter (optional) Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 34 Cylinder 1 top temperature sensor (optional) Temperature sensor for external heat exchanger Flow heat meter WMZ temperature sensor (optional) Return heat meter temperature sensor (optional) WMZ Heat meter (optional) Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 35 Collector temperature sensor FSK, field 2 Temperature sensor for external heat exchanger Flow heat meter WMZ temperature sensor (optional) Return heat meter temperature sensor (optional) WMZ Heat meter (optional) Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 36 Cylinder centre temperature sensor (optional) Temperature sensor for external heat exchanger Flow heat meter WMZ temperature sensor (optional) Return heat meter temperature sensor (optional) WMZ Heat meter (optional) Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 37 Cylinder centre temperature sensor (optional) Temperature sensor for external heat exchanger Flow heat meter WMZ temperature sensor (optional) Return heat meter temperature sensor (optional) WMZ Heat meter (optional) Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 38 Collector temperature sensor FSK, field 2 Temperature sensor for external heat exchanger Flow heat meter WMZ temperature sensor (optional) Return heat meter temperature sensor (optional) WMZ Heat meter (optional) Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 39 Temperature sensor for external heat exchanger Swimming pool temperature sensor Cylinder centre temperature sensor Flow heat meter WMZ temperature sensor (optional) Return heat meter temperature sensor (optional) WMZ Heat meter (optional) Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 40 Temperature sensor for external heat exchanger Swimming pool temperature sensor Cylinder centre temperature sensor Flow heat meter WMZ temperature sensor (optional) Return heat meter temperature sensor (optional) WMZ Heat meter (optional) Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 41 Cylinder 1 top temperature sensor (optional) Swimming pool temperature sensor Temperature sensor for external heat exchanger Flow heat meter WMZ temperature sensor (optional) Return heat meter temperature sensor (optional) WMZ Heat meter (optional) Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 42 The controller has an RS232 serial interface for data output. The Tx and Rx signals are inverted by the controller. Connection is by way of a 4-pole screw-clamp terminal. Fig. 36 Earth Signal in Signal out No function Logamatic SC40 - Technical specifications are subject to change without prior notice.

  • Page 43: Operation

    – Opening submenu (Service level) – Changing/saving setting (Service level) Back button – Returning to higher menu level (Service level) – Reverting to collector panel temperature display (View level) Tab. 6 Logamatic SC40 - Technical specifications are subject to change without prior notice.

  • Page 44: Controller Operation Levels

    Possible indications (display flashes when function is active): – Double Match Flow – Evacuated tube collector function – S. Europe function – Daily heating – Cooling function Tab. 7 Overview of system data Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 45 The controller has to be set to suit the specifics of the solar thermal system. An overview of the Service level functions can be found on page 48. Logamatic SC40 - Technical specifications are subject to change without prior notice.

  • Page 46: Commissioning (For Engineers Only)

    In order to prevent undesirable starting of the pump when the power supply is con- nected, the controller is factory-set to Always off mode. V For normal operation, set the controller to Auto. ( Section 7.6, page 67). Logamatic SC40 - Technical specifications are subject to change without prior notice.

  • Page 47: Entering Basic Settings

    Switch to View level by turning the rotary selector Subsequent changes can be made from the Service level menu by selecting Settings. Tab. 9 Basic settings after installation Logamatic SC40 - Technical specifications are subject to change without prior notice.

  • Page 48: Service Level Menu (For Qualified Heating Engineers Only)

    Cylinder 1 maximum temperature Double Match Flow Return flow boost cut-in temperature differential Return boost cut-out temperature differential Heat meter Glycol content Tab. 10 Functions selectable from Service menu Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 49 Heat exchanger anti-icing function Operating mode Solar system operating mode Fault diagnosis Function test Version Reset For resetting the controller to the default settings Tab. 10 Functions selectable from Service menu Logamatic SC40 - Technical specifications are subject to change without prior notice.

  • Page 50: Language Selection

    V To return to the next menu up, press the button. Setting range Default setting New setting German, English, French, Ital- English ian, Spanish, Portuguese, Turkish, Croatian, Slovenian, Romanian Tab. 11 Logamatic SC40 - Technical specifications are subject to change without prior notice.

  • Page 51: Time, Setting

    V To save the new setting: release the button. V To return to the next menu up, press the button. Logamatic SC40 - Technical specifications are subject to change without prior notice.

  • Page 52: Select System

    V To return to the next menu up, press the button. Setting range Default setting New setting Configuration diagrams T1 to T8 Configuration diagrams H1 to H13 Configuration diagrams S1 to S6 Tab. 12 Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 53 X (S1, S2, S5) X (S2, S4) X (S1, S2, S4, S5) X (S2) X (S1, S2, S5) X (S4) Tab. 13 Additional functions and temperature sensors required Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 54 X (S2, S4) X (S6) X (S4) X (S2, S4) X (S6) X (S6) X (S4) X (S4) X (S4) X (S6) Tab. 13 Additional functions and temperature sensors required Logamatic SC40 - Technical specifications are subject to change without prior notice.

  • Page 55: Settings

    Setting range Default range setting New setting 7 -20 K (°C) 10 K (°C) Tab. 14 Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 56 T3, T7 and H3 (if the output for one pump is changed, the controller sets the others to the same output). Setting range Default setting New setting 30 - 100 % 50 % Tab. 16 Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 57 This function is not possible or is limited if the collector sensor is external to the collector. Setting range Default setting New setting Yes/No Tab. 18 If the Tube collector function is active, the cooling function ( Section 7.5.22, page 65) is automatically deactivated. Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 58 The minimum difference from the cut-out temperature difference is 3 K (°C). Setting range Default range setting New setting 6 - 20 K (°C) 6 K (°C) Tab. 21 Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 59 In order to obtain accurate readings from the heat meter, the glycol content of the solar fluid must be specified. Setting range Default range setting New setting 0 %, 30 %, 40 %, 50 % 45%, 50 % Tab. 24 Logamatic SC40 - Technical specifications are subject to change without prior notice.

  • Page 60: Consumer

    When the cylinder maximum temperature is reached, the solar system pump is switched off. Setting range Default setting New setting 20 - 90 °C 60 °C Tab. 26 Logamatic SC40 - Technical specifications are subject to change without prior notice.

  • Page 61: Cylinder Charge Transfer Cut-In Temperature Limit

    If the temperature difference falls below the set figure, cylinder charge transfer is stopped. Setting range Default setting New setting 4 - 17 K (°C) 5 K (°C) Tab. 29 Logamatic SC40 - Technical specifications are subject to change without prior notice.

  • Page 62: Pump 2 Speed Modulation/Plate Heat Exchanger

    T3, T7 and H3 (if the minimum output for one pump is changed, the controller sets the others to the same output). Setting range Default setting New setting 30 - 100 % 50 % Tab. 31 Logamatic SC40 - Technical specifications are subject to change without prior notice.

  • Page 63: Daily Heating

    – The controller for the standby cylinder must be set so that domestic hot water takes priority. – Daily heating of the preheating stage must be scheduled for times without hot water demand. Setting range Default setting New setting Yes/No Tab. 32 Logamatic SC40 - Technical specifications are subject to change without prior notice.

  • Page 64: Daily Heating Time

    Menu: Service > Settings > Daily heating target temperature This setting determines the temperature for daily heating. Setting range Default setting New setting 60 - 70 °C 60 °C Tab. 34 Logamatic SC40 - Technical specifications are subject to change without prior notice.

  • Page 65: Cooling Function

    Systems with a domestic hot water cylinder that is charged by an external heat ex- changer: in “hard water” areas, increased levels of limescale formation can occur in the heat exchanger secondary system. Setting range Default setting New setting Yes/No Tab. 35 Logamatic SC40 - Technical specifications are subject to change without prior notice.

  • Page 66: Europe Function

    Warning: risk of frost damage to heat exchanger! V Fit valve with a positioner that achieves a switching time of less than 45 seconds. Setting range Default setting New setting Yes/No Tab. 37 Logamatic SC40 - Technical specifications are subject to change without prior notice.

  • Page 67: System Operating Mode

    V To save the new setting: release the button. V To exit Operating mode, press the button. Setting range Default setting New setting Always off, Auto Always off Tab. 38 Logamatic SC40 - Technical specifications are subject to change without prior notice.

  • Page 68: Fault Diagnosis

    V Inform occupants of the premises of the risk of scalding. 7.7.2 Version Menu: Service > Diagnosis > Version The Version menu shows the current version of the software. Logamatic SC40 - Technical specifications are subject to change without prior notice.

  • Page 69: Reset

    V Press and hold the button and use the rotary selector to select Yes. RESET Reset controller to factory setting? V To save the new setting: release the button. Logamatic SC40 - Technical specifications are subject to change without prior notice.

  • Page 70: Faults

    Collector temperature drops Collector connections reversed. Fit flow and return pipes correctly. 10 K (°C) within 15 seconds of switching on. Tab. 39 Possible faults indicated on the display Logamatic SC40 - Technical specifications are subject to change without prior notice.

  • Page 71: Faults Not Indicated On The Display

    (max. 60 °C). low. Tab. 40 Possible faults not indicated on the display Logamatic SC40 - Technical specifications are subject to change without prior notice.
  • Page 72 7747017473 Buderus Cotswold Way, Warndon, Worcester WR4 9SW Customer service: 0870 421 5933 Technical support: 0870 421 5944 Fax: 01905 753130 www.buderus.co.uk In the UK and IE, Buderus is a brand name of Bosch Thermotechnology Ltd.

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