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Junkers CeraclassExcellence ZSC 24-3 MFA User Manual
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Junkers CeraclassExcellence ZSC 24-3 MFA User Manual

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Machine Translated by Google
User manual
ZSC 24-3 MFA
ZWC 24-3 MFA
ZWC 28-3 MFA
ZWC 35-3 MFA
CeraclassExcellence
ZSC 24-3 MFK
ZWC 24-3 MFK
ZWC 28-3 MFK
ZWC 24-3 MFK E
Bosch Thermotechnology nv/sa
Kontichsesteenweg 60
6 720 660 245 (2015/06 BL-FR)
German version available on request
2630 ARCSELAAR
TEL: 03 887 20 60
FAX: 03 877 01 29
F

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Gerry Heard
June 15, 2025

h to activate the pilot light

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Summary of Contents for Junkers CeraclassExcellence ZSC 24-3 MFA

  • Page 1 Machine Translated by Google User manual ZSC 24-3 MFA ZSC 24-3 MFK ZWC 24-3 MFA ZWC 24-3 MFK ZWC 28-3 MFA ZWC 28-3 MFK ZWC 35-3 MFA ZWC 24-3 MFK E CeraclassExcellence Bosch Thermotechnology nv/sa Kontichsesteenweg 60 2630 ARCSELAAR TEL: 03 887 20 60 FAX: 03 877 01 29 6 720 660 245 (2015/06 BL-FR) German version available on request...

  • Page 2: General Safety Instructions

    Machine Translated by Google 1. General safety instructions Instructions for users This instruction manual is intended for the user operating the heating installation. The instructions in all notices must be followed. Failure to follow these instructions may result in material damage, bodily injury or fatal accidents.
  • Page 3 Machine Translated by Google Behavior if you smell gas There is a risk of explosion if gas leaks. If you smell gas, observe the following rules of conduct! ÿ Avoid the formation of flames or sparks: - Do not smoke, do not use lighters or matches. - Do not operate any electrical switch, do not disconnect from connector.
  • Page 4 Machine Translated by Google Inspection and maintenance Inadequate or lack of cleaning, inspection or maintenance can cause property damage and/or bodily injury, or even danger of death. ÿ Have this work carried out exclusively by an approved professional. ÿ Remedy any faults immediately. ÿ...
  • Page 5 ÿ Do not use or store corrosion-activating substances (thinners, glues, chlorinated detergents, etc.) near the appliance. Conversion Conversion to another type of gas can only be carried out by the JUNKERS after-sales service 6 720 660 245 (2015/06 BL-FR)
  • Page 6 Machine Translated by Google Safety of electrical appliances for household and similar uses To avoid risks from electrical appliances, the following requirements apply in accordance with standard EN 60335-1: "This device can be used by children aged 8 and over and by people with reduced physical, sensory or mental abilities or without experience or knowledge, if they are properly supervised.

  • Page 7: Opening The Door

    Machine Translated by Google 2. Information about the device 2.1 Energy consumption product data Product data relating to energy consumption can be found in the technical and installation instructions intended for professionals. 3. Opening the door ÿ Push the mark (3 points) to open the door. Fig.
  • Page 8 Machine Translated by Google 4. Operating elements Fig. 2 6 720 660 245 (2015/06 BL-FR)
  • Page 9 Machine Translated by Google 8.1 manometer 15 safety valve (heating circuit) 27 automatic air vent 61 reset button 135 main switch 136 flow temperature regulator 295 identification sticker 310 hot water temperature regulator 317 display 363 control lamp for burner operation 365 chimney sweep button 366 service button 367 for ZWC: ECO button for ZSC: no function 476 holiday button 800 control lamp for...
  • Page 10 Machine Translated by Google 5. Commissioning Open the gas tap (only for natural gas boilers) firm open Fig. 3 6 720 660 245 (2015/06 BL-FR)
  • Page 11 Machine Translated by Google Open the heating and sanitary stops sanitary stop 1/2'' heating stops 3/4'' firm open firm open Fig. 4 6 720 660 245 (2015/06 BL-FR)
  • Page 12 Machine Translated by Google Heating circuit water pressure check The pressure gauge needle should be between 1 and 1.5 bar. (if higher pressure is required, your installer will let you know) Fig. 5 6 720 660 245 (2015/06 BL-FR)
  • Page 13 Machine Translated by Google Heating water filling The filling is different for each heating installation. Have your installer show and explain the filling. Attention: The boiler can be damaged. ÿ Fill only when the boiler is cold. ÿ The maximum pressure of 3 bar at the highest heating water temperature must not be exceeded (the safety valve opens).
  • Page 14 Machine Translated by Google 6. Use This user guide only concerns the boiler. Depending on the controller used, some functions differ in their use. The following heating regulators can be used: ÿ room thermostats, ÿ any remote controls. Always consult the regulation manuals. 6 720 660 245 (2015/06 BL-FR)
  • Page 15 Machine Translated by Google 6.1 Switch on/off To light up ÿ Press the main switch. The blue light comes on and the display shows the flow temperature. Fig. 6 Switch off ÿ Press the main switch to switch on the device off.
  • Page 16 Machine Translated by Google 6.2 Switching on the heating The flow temperature can be set between 40 and 88°C. ÿ Turn the flow thermostat to adjust the temperature of the heating system: - low temperature heating: p. ex. position 5 (about 74°C) - Heating system for flow temperatures up to 88°C: max position...
  • Page 17 Machine Translated by Google position starting temperature about 40°C about 49°C about 58°C about 65°C about 74°C about 84°C about 88°C 6 720 660 245 (2015/06 BL-FR)

  • Page 18: Temperature Setting

    Machine Translated by Google 6.3 Temperature setting Consult the regulation manuals. Here you will find how: ÿ the room thermostats must be adjusted, ÿ you can heat economically and save energy. Fig. 8 6 720 660 245 (2015/06 BL-FR)
  • Page 19 Machine Translated by Google 6.4 ZSC boilers with tank: hot water temperature setting ÿ Adjust the tank temperature with the boiler temperature knob. The display shows the flow temperature. At a flask with thermometer, the temperature is displayed on the flask same.
  • Page 20 Machine Translated by Google temperature dial hot water temperature min - 1 about 40°C about 45°C about 49°C about 52°C about 56°C 6 - max about 60°C 6 720 660 245 (2015/06 BL-FR)
  • Page 21 Machine Translated by Google 6.5 ZWC boilers: hot water temperature setting ÿ Adjust the hot water temperature with the temperature knob of the boiler. The display shows the flow temperature. Fig. 10 temperature dial hot water temperature about 40°C min - 1 about 45°C about 49°C about 52°C...
  • Page 22 Machine Translated by Google ECO-COM key function: 1 Comfort mode: the Eco button is not pressed and not lit: the plate exchanger is maintained every 20 minutes for 1 minute at the programmed domestic hot water temperature, increased by 25°C. If necessary, these 20 minutes can be extended with the 3 E service function (from 20 to 60 minutes).
  • Page 23 Machine Translated by Google 6.6 Summer position (hot water only) ÿ Leave the heating on. ÿ Turn the controller fully to the left to the position Heating is switched off. Hot water preparation and the electrical supply to the thermostat are not cut off. Fig.
  • Page 24 Machine Translated by Google 6.7 Heating system frost protection ÿ Do not trigger the boiler. ÿ Turn the regulator to the completely left in Heating is switched off position. Hot water preparation and the electrical supply to the thermostat are not cut off. Fig.
  • Page 25 Machine Translated by Google Storage tank frost protection (if connected): ÿ Do not trigger the boiler. against the stop ÿ Turn the left temperature dial. Frost protection is activated when the tank temperature drops below 15°C. Fig. 13 6 720 660 245 (2015/06 BL-FR)
  • Page 26 Machine Translated by Google 6.8 Thermal disinfection for boilers with ballon The entire hot water installation including the draw-off points must be thermally disinfected on a regular basis. (See local and/or national prescriptions) The boiler has a thermal tank disinfection function as standard. This increases the temperature of the water in the tank once a week to 70°C for 35 min.
  • Page 27 Machine Translated by Google 6.9 Locking the Heatronic The button lock affects the flow temperature and hot water temperature controllers as well as all buttons except the main switch and the chimney sweep button. To activate the lock: ÿ Press both buttons for approx. 5 seconds until the display shows Fig.
  • Page 28 ÿ Switch off the boiler and switch it on again. The boiler returns to service and the display again shows the flow temperature. If it is not possible to remedy the disturbance: ÿ Contact your installer or JUNKERS after-sales service. 6 720 660 245 (2015/06 BL-FR)
  • Page 29 After about 20 minutes, the boiler switches back on automatically. If disturbances A4 or A2 are displayed frequently, call your installer or the JUNKERS after-sales service. Chimney operation needs improvement, or the boiler needs servicing. 6 720 660 245 (2015/06 BL-FR)

  • Page 30: Messages Shown On The Display

    Machine Translated by Google 6.14 Messages shown on the display Display Description Key lock is activated. Thermal disinfection. Pump blockage protection activated. Domestic hot water production or comfort mode active. Ball warming up. 6 720 660 245 (2015/06 BL-FR)
  • Page 31 Machine Translated by Google 7. Instructions for saving energy Save gas The boiler has been built in such a way as to ensure reduced gas consumption, low polluting emissions and optimal comfort. The gas supply to the burner is regulated according to the heat requirement of the installation.
  • Page 32 Machine Translated by Google 8. General Coat cleaning Do not use abrasive or aggressive rinsing products, a damp cloth is sufficient. Preservation of the notice After reading, you can slide the manual (with the last page forward) into the door of the boiler. Fig.
  • Page 33 This work must be carried out by the installer, an authorized tradesman or by JUNKERS after-sales service. ANNUAL MAINTENANCE IS RECOMMENDED. (depending on regional regulations on the matter) Call an approved installer or the JUNKERS after-sales service. 6 720 660 245 (2015/06 BL-FR)

  • Page 34: Important Notes

    Machine Translated by Google 10. Important Notes You can find the type designation and the serial number on the type plate of the device. Please mention this data on the warranty card and during each contact with your installer or with our after-sales service. Type Serial number Date...
  • Page 35 2630 Archaer AFTER SALES SERVICE 078 05 02 15 ÿ maintenance & repairs 078 05 02 11 FAX AFTER-SALES SERVICE 03 887 20 60 ÿ GENERAL NUMBER 03 877 01 29 FAX GENERAL NUMBER www.junkers.be 6 720 660 245 (2015/06 BL-FR)
  • Page 36 Machine Translated by Google 12. Condensed Notice To light up Temp. Hot water Caution: Risk of burns ÿ Set the temperature to maximum safe''. To turn on the heating eco-key on Temperature adjustment Adjust the = economy mode temperature at the room thermostat. (ZWC) eco-key off = comfort mode (ZWC)

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