Buderus Logano plus GB402 Operating Instructions Manual
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Buderus Logano plus GB402 Operating Instructions Manual

Gas condensing boiler
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Operating instructions

Logano plus GB402
Gas condensing boiler
For users
Read carefully before use.

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Summary of Contents for Buderus Logano plus GB402

  • Page 1: Operating Instructions

    Operating instructions Gas condensing boiler Logano plus GB402 For users Read carefully before use.
  • Page 2 In this endeavour, efficiency and environmental compatibility are our priorities. Thank you for choosing a Buderus product – a choice that will give you not only efficient energy utilisation but also high levels of comfort and convenience. To ensure that you retain this level of excellence, please read the operating instructions carefully.

  • Page 3: Table Of Contents

    Troubleshooting ......17 Recognising the operating state and resetting faults ....17 Logano plus GB402 - Subject to technical modifications.

  • Page 4: Explanation Of Symbols And Safety Information

    • a list entry B Never shut off safety valves! Water is expelled from – a list entry (second level) the heating circuit and DHW circuit safety valve during heat-up. Tab. 1 Logano plus GB402 - Subject to technical modifications.
  • Page 5 B Use original spare parts only. Damage caused by the well as the air inlet apertures or vents. During this use of parts not supplied by Buderus is not covered by inspection, have a contractor replace any parts that the Buderus warranty.

  • Page 6: Product Information

    Buderus sales office. Intended use The Logano plus GB402 is designed for conventional use as a gas condensing boiler for DHW and central heating. The boiler can be equipped with a programming unit, e.g.

  • Page 7: Product Description

    Fig. 1) is a gas condensing boiler with an aluminium heat exchanger. Fig. 1 Logano plus GB402 - main components Boiler front panel The main components of the Logano plus GB402 Gas valve Fig. 1) are: Control unit (MC10 and BC10) • Control unit Gas burner (burner rod) •...

  • Page 8: Operation

    The display shows “ρΕ” whilst the reset is being The “DHW heating” LED [3] illuminates if a heat demand implemented. has been generated for DHW (e.g. if hot water is required). Logano plus GB402 - Subject to technical modifications.

  • Page 9: Setting Temperatures

    1) The heating program (time switch) on the room controller remains active so that DHW is not heated during night mode. 2) The LED below the rotary selector illuminates if DHW is being reheated or the DHW temperature is below the required temperature (heat demand). Logano plus GB402 - Subject to technical modifications.

  • Page 10: Setting The Boiler Water Temperature

    RCxx using the heating curve. If no programming unit is Convector heaters connected, the maximum boiler water temperature is 90 °C. Tab. 3 Settings at the maximum boiler water temperature rotary selector Logano plus GB402 - Subject to technical modifications.

  • Page 11: Showing Values On The Display

    Manual mode becomes active as soon as a flashing dot appears in the bottom r.h. corner of the display. [\/2/4| Terminating manual mode > 2 seconds (manual mode also terminates after the power supply has been interrupted). Tab. 5 Manual mode (emergency mode) Logano plus GB402 - Subject to technical modifications.

  • Page 12: Setting Pump Run-On Time

    Hold down c until the required pump run-on time is shown (twice) [f//0| (at least = 15 seconds) [\/2/4| e e (twice) Back to standard operation. or wait 5 minutes Tab. 6 Pump run-on time Logano plus GB402 - Subject to technical modifications.

  • Page 13: Operating The Heating System

    A heat demand is triggered if the heating or the DHW temperatures fall below their respective set values. The LED below the relevant rotary selector illuminates. 6720614021-041.1TD Fig. 7 Switching on the heating system Logano plus GB402 - Subject to technical modifications.

  • Page 14: Shutting Down The Heating System

    B Close the main fuel shut-off valve. B Isolate the heating system from the mains power supply by means of the heating system emergency stop switch or the appropriate domestic fuse/circuit breaker. Logano plus GB402 - Subject to technical modifications.

  • Page 15: And Venting The System

    Enter the amount of top-up water into the operator's log, as the heating contractor has shown you. B Notify your heating contractor if you find you need to top up your heating system frequently. Logano plus GB402 - Subject to technical modifications.

  • Page 16: Inspection And Maintenance

    Cleaning and care To clean the boiler, wipe the casing with a damp cloth (soapy solution). Never use scouring or aggressive cleaning agents that would damage the painted surface or plastic components. Logano plus GB402 - Subject to technical modifications.

  • Page 17: Troubleshooting

    DHW pipework at the lowest point. For more information on possible faults, see the installation and maintenance instructions as well as the control unit documentation. Logano plus GB402 - Subject to technical modifications.
  • Page 18 Notes Logano plus GB402 - Subject to technical modifications.
  • Page 19 Notes Logano plus GB402 - Subject to technical modifications.
  • Page 20 Buderus Cotswold Way, Warndon, Worcester WR4 9SW Customer service: 0844 892 3004 Technical support: 0844 892 4224 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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