DeDietrich Innovens MCA 25 BIC User Manual
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DeDietrich Innovens MCA 25 BIC User Manual

Wall-hung gas condensing boilers
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Innovens
EN
Wall-hung gas condensing boilers
MCA 25/28 BIC
User Guide
300022162-001-01

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Summary of Contents for DeDietrich Innovens MCA 25 BIC

  • Page 1 Innovens Wall-hung gas condensing boilers MCA 25/28 BIC User Guide 300022162-001-01...

  • Page 2: Table Of Contents

    Contents Introduction ....................4 Symbols used ............4 Abbreviations ............4 General ..............5 1.3.1 Manufacturer's liability ..........5 1.3.2 Installer's liability .............5 1.3.3 User's liability ............5 Certifications ............6 Safety instructions and recommendations ..........7 Safety instructions ..........7 Recommendations ..........8 Description ....................9 Operating principle ..........9 3.1.1 Gas/air setting ............9 3.1.2 Combustion .............9...
  • Page 3 Contents Installation shutdown .........24 Frost protection ..........24 Checking and maintenance ..............26 General instructions ...........26 Periodic checks ..........26 Filling the system ..........27 Bleeding the heating system ......29 Draining the installation ........31 Troubleshooting ..................32 Anti-hunting ............32 Messages (Code type Bxx or Mxx) ....32 Faults (Code type Lxx or Dxx) ......34 Technical specifications ................40 Technical specifications ........40...
  • Page 4 15/06/12 - 300022162-001-01...

  • Page 5: Introduction

    MCA 25/28 BIC 1. Introduction Introduction Symbols used In these instructions, various danger levels are employed to draw the user's attention to particular information. In so doing, we wish to safeguard the user's safety, obviate hazards and guarantee correct operation of the appliance. DANGER Risk of a dangerous situation causing serious physical injury.

  • Page 6: General

    1. Introduction MCA 25/28 BIC General 1.3.1. Manufacturer's liability Our products are manufactured in compliance with the requirements of the various applicable European Directives. They are therefore delivered with [ marking and all relevant documentation. In the interest of customers, we are continuously endeavouring to make improvements in product quality.

  • Page 7: Certifications

    MCA 25/28 BIC 1. Introduction This appliance is not intended to be used by persons (including children) whose physcial, sensory or mental capacity is impaired or persons with no experience or knowledge, unless they have the benefit, through the intermediary of a person responsible for their safety, of supervision or prior instructions regarding use of the appliance.

  • Page 8: Safety Instructions And Recommendations

    2. Safety instructions and recommendations MCA 25/28 BIC Safety instructions and recommendations Safety instructions DANGER If you smell gas: Do not use a naked flame, do not smoke, do not operate electrical contacts or switches ( doorbell, light, motor, lift, etc..). Shut off the gas supply.

  • Page 9: Recommendations

    MCA 25/28 BIC 2. Safety instructions and recommendations Recommendations WARNING Only qualified professionals are authorised to work on the appliance and the installation. 4 Regularly check the water pressure in the installation (minimum pressure 0,8 bar, recommended pressure between 1,5 and 2,0 bar).

  • Page 10: Description

    3. Description MCA 25/28 BIC Description Operating principle 3.1.1. Gas/air setting The casing fitted to the boiler is also used as an air box. Air is sucked in by the fan and gas injected into the venturi by the fan intake. The fan rotation speed is set according to the settings parameters, the thermal energy requirement and the temperatures measured by the temperature sensors.

  • Page 11: Main Parts

    MCA 25/28 BIC 3. Description Main parts Flue gas discharge pipe Casing/air box Flue gas measuring point Mixer pipe Heating flow hose Air intake silencer Box for the control PCBs Combined venturi and gas valve unit Flow end hydroblock Safety valve outlet pipe Siphon Control panel Tank drainage valve...

  • Page 12: Control Panel

    3. Description MCA 25/28 BIC Control panel 3.3.1. Description of the keys AUTO Temperature setting key (heating, DHW, swimming pool) Operating mode selection key DHW override key Key to access the parameters reserved for the installer Keys on which the function varies as and when selections are made Rotary setting button: Turn the rotary button to scroll through the menus or...

  • Page 13: Description Of The Display

    MCA 25/28 BIC 3. Description 3.3.2. Description of the display n Key functions Access to the various menus > Used to scroll through the menus Used to scroll through the parameters The symbol is displayed when help is available Used to display the curve of the parameter selected <...
  • Page 14 3. Description MCA 25/28 BIC n Solar (If connected) The solar load pump is running The top part of the tank is reheated to the tank set point The entire tank is reheated to the tank set point < AUTO The entire tank is reheated to the solar tank set point The tank is not loaded - Presence of the solar control system...
  • Page 15 MCA 25/28 BIC 3. Description n System pressure Pressure indicator: The symbol is displayed when a water pressure sensor is connected. Flashing symbol: The water pressure is insufficient. Steady symbol: The water pressure is sufficient. Water pressure level < AUTO R : 0,9 to 1,1 bar E : 1,2 to 1,5 bar Z : 1,6 to 1,9 bar...

  • Page 16: Browsing In The Menus

    3. Description MCA 25/28 BIC 3.3.3. Browsing in the menus 1. To select the desired menu, turn the rotary button. 2. To access the menu, press the rotary button. #MEASURES To go back to the previous display, press the key j . #CHOICE TIME PROG.

  • Page 17: Operating The Boiler

    MCA 25/28 BIC 4. Operating the boiler Operating the boiler Commissioning the boiler 1. Check the water pressure in the installation shown on the control panel display. If the water pressure is lower than 0,8 bar, more water should be added. If necessary, top up the water level in the heating system (recommended hydraulic pressure between 1,5 and 2,0 bar).
  • Page 18 4. Operating the boiler MCA 25/28 BIC User level - Menu #MEASURES Parameter Description Unit Outside temperature °C OUTSIDE TEMP. Room temperature of circuit A °C ROOMTEMP. A Room temperature of circuit B °C ROOMTEMP. B Room temperature of circuit C °C ROOMTEMP.

  • Page 19: Changing The Settings

    MCA 25/28 BIC 4. Operating the boiler Changing the settings 4.3.1. Setting the set point temperatures To set the various heating, DHW and swimming pool temperatures, proceed as follows: 1. Press the C key. 2. To select the desired parameter, turn the rotary button. 3.

  • Page 20: Selecting The Operating Mode

    4. Operating the boiler MCA 25/28 BIC 4.3.2. Selecting the operating mode To select an operating mode, proceed as follows: 1. Press the MODE key. 2. To select the desired parameter, turn the rotary button. 3. To modify the parameter, press the rotary button. To go back to the previous display, press the key j .

  • Page 21: Forcing Domestic Hot Water Production

    MCA 25/28 BIC 4. Operating the boiler 4.3.3. Forcing domestic hot water production To force domestic hot water production, proceed as follows: 1. Press the r key. 2. To select the desired parameter, turn the rotary button. 3. To modify the parameter, press the rotary button. To go back to the previous display, press the key j .

  • Page 22: Setting The Time And Date

    4. Operating the boiler MCA 25/28 BIC 4.3.5. Setting the time and date 1. To access user level: Press the > key. 2. Select the menu #TIME .DAY. SUNDAY 11:45 Turn the rotary button to scroll through the menus or modify a value.

  • Page 23: Customising A Timer Programme

    MCA 25/28 BIC 4. Operating the boiler User level - Menu #CHOICE TIME PROG. Parameter Adjustment range Description CURRENT PROG.A P1 / P2 / P3 / P4 Comfort programme activated (Circuit A) CURRENT PROG.B P1 / P2 / P3 / P4 Comfort programme activated (Circuit B) CURRENT PROG.C P1 / P2 / P3 / P4...
  • Page 24 4. Operating the boiler MCA 25/28 BIC 6. b : Day selection Press key b / v until the symbol b is displayed. PROG P2 C Turn the rotary button to the right to select the day(s) desired. We Th "Select the days to v : Cancelling the day selection program"...

  • Page 25: Installation Shutdown

    MCA 25/28 BIC 4. Operating the boiler User level - Menu #TIME PROGRAM Comfort periods / Filling enabled: P2 _______________ P3 _______________ P4 _______________ _______________ TIME PROG.DHW Monday Tuesday Wednesday Thursday Friday Saturday Sunday Monday TIME PROG.AUX Tuesday Wednesday Thursday Friday Saturday Sunday...
  • Page 26 4. Operating the boiler MCA 25/28 BIC CAUTION The antifreeze protection does not function if the appliance is switched off. The integrated protection system only protects the boiler, not the installation. To protect the installation, set the appliance to HOLIDAYS mode. The HOLIDAYS mode protects: 4 The installation if the outside temperature is lower than 3°C (factory setting).

  • Page 27: Checking And Maintenance

    MCA 25/28 BIC 5. Checking and maintenance Checking and maintenance General instructions The boiler does not require a lot of maintenance. Nevertheless, we recommend having the boiler inspected and serviced at regular intervals. 4 Maintenance and cleaning of the boiler must be carried out at least once a year by a qualified technician.

  • Page 28: Filling The System

    5. Checking and maintenance MCA 25/28 BIC 4 Carry out a visual check for the presence of any water leaks. T001507-B 4 Open and close the radiator valves several times a year (this prevents the valves from seizing up). 4 Clean the outside of the boiler using a damp cloth and a light detergent.
  • Page 29 MCA 25/28 BIC 5. Checking and maintenance 5. Open the cold water inlet and heating outlet valves. T001620-A 6. Open the disconnector valves. T001618-A 7. Close the disconnector valves when the manometer indicates a pressure of 2 bar. 2 bar When water is added, air gets into the heating system.

  • Page 30: Bleeding The Heating System

    5. Checking and maintenance MCA 25/28 BIC Bleeding the heating system It is essential that you bleed any air in the calorifier, the conduits or the taps to prevent the annoying noises likely to be produced during heating or when tapping water. To do this, proceed as follows: 1.
  • Page 31 MCA 25/28 BIC 5. Checking and maintenance 7. Open the bleed connection using the bleed key provided whilst keeping a rag pressed against the connection. T000217-A 8. Wait until water comes out of the bleed valve and then close the bleed connection.

  • Page 32: Draining The Installation

    5. Checking and maintenance MCA 25/28 BIC Draining the installation It may become necessary to empty the water from the heating system when the radiators have to be replaced, should there be a major water leak or a risk of frost. To do this, proceed as follows: 1.

  • Page 33: Troubleshooting

    MCA 25/28 BIC 6. Troubleshooting Troubleshooting Anti-hunting When the boiler is in Anti-short-cycle operating mode, the symbol ? flashes. 1. Press the "?" key. The message Operation assured when the restart temperature will be reached is displayed. This message is not an error message but an item of information.
  • Page 34 6. Troubleshooting MCA 25/28 BIC Code Messages Description Checking / solution The RL inlet on the PCU PCB Parameter error BL.RL OPEN terminal block is open Contact the professional who takes care of maintenance of the appliance Bad connection Contact the professional who takes care of maintenance of the appliance Contact the professional who takes care of maintenance of the appliance BL.INV.

  • Page 35: Faults (Code Type Lxx Or Dxx)

    MCA 25/28 BIC 6. Troubleshooting Code Messages Description Checking / solution The sensor on the plate Contact the professional who takes care of BL.DHW INST exchanger outlet is disconnected maintenance of the appliance or short circuited A service is required The date programmed for the service has been reached REVISION If the symbol ? flashes, press key ?.
  • Page 36 6. Troubleshooting MCA 25/28 BIC 3. Press the ? key. Follow the instructions displayed to solve the problem. 4. Consult the meaning of the codes in the table below: SUNDAY 11:45 TEMP. : 68° PCU COM.FAIL D27 < AUTO C002302-D-04 Code Faults Cause Description...
  • Page 37 MCA 25/28 BIC 6. Troubleshooting Code Faults Cause Description Checking / solution of the fault The return temperature sensor is on Bad connection BACK S.FAILURE an open circuit Sensor fault Contact the professional who takes care of maintenance of the appliance Return temperature too low Bad connection BACK S.FAILURE...
  • Page 38 6. Troubleshooting MCA 25/28 BIC Code Faults Cause Description Checking / solution of the fault BURNER FAILURE PCU 5 burner start-up failures No ignition Contact the professional who takes care of maintenance of the appliance Ignition arc, but no flame formation Check that the gas valve is fully opened Contact the professional who takes care of maintenance of the appliance...
  • Page 39 MCA 25/28 BIC 6. Troubleshooting Code Faults Cause Description Checking / solution of the fault HRU/URC unit test error Bad connection TEST.HRU.FAIL External cause Parameter incorrectly set Contact the professional who takes care of maintenance of the appliance The water pressure is too low Hydraulic circuit incorrectly vented L250 DEF.WATER MIS.
  • Page 40 6. Troubleshooting MCA 25/28 BIC Code Faults Cause Description Checking / solution of the fault Storage tank sensor fault Bad connection ST.TANK S.FAIL Sensor fault Note: The hot water storage tank reheating Contact the professional who takes care of operation is no longer assured. maintenance of the appliance Swimming pool sensor fault circuit B Bad connection...

  • Page 41: Technical Specifications

    MCA 25/28 BIC 7. Technical specifications Technical specifications Technical specifications Boiler type MCA 25/28 BIC General Flow rate setting Adjustable Modulating, Start/Stop, 0 - 10 V minimum-maximum kW 5,0 - 24,1 Nominal output (Pn) Heating System (80/60 °C) Factory setting 19,4 minimum-maximum kW 5,0 - 29,9...

  • Page 42: Energy Savings

    8. Energy savings MCA 25/28 BIC Energy savings Energy-saving advice 4 Keep the room in which the boiler is installed well ventilated. 4 Do not block ventilation outlets. 4 Do not cover the radiators. Do not hang curtains in front of the radiators.

  • Page 43: Warranty

    MCA 25/28 BIC 9. Warranty Warranty General You have just purchased one of our appliances and we thank you for the trust you have placed in our products. Please note that your appliance will provide good service for a longer period of time if it is regularly checked and maintained.
  • Page 44 Зубарев переулок, д. 15/1 Бизнес-центр «Чайка Плаза», офис 309 +7 (495) 221-31-51 DUEDI S.r.l. DE DIETRICH THERMIQUE Iberia S.L.U. www.duediclima.it www.dedietrich-calefaccion.es Distributore Ufficiale Esclusivo Av. Princep d’Astúries 43-45 De Dietrich-Thermique Italia 08012 BARCELONA Via Passatore, 12 - 12010 +34 932 920 520...

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