DOMUSA BioClass iC DX Installation And Operating Instructions Manual
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DOMUSA BioClass iC DX Installation And Operating Instructions Manual

Biomass boiler
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BIOCLASS iC DX
Biomass boiler
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| INSTALLATION AND OPERATING INSTRUCTIONS

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  • Page 1 BIOCLASS iC DX Biomass boiler | INSTALLATION AND OPERATING INSTRUCTIONS...
  • Page 3 Thank you for choosing a DOMUSA TEKNIK heating boiler. Within the product range offered by DOMUSA TEKNIK you have chosen Bioclass iC DX model. With a suitable hydraulic installation and with a correct fuel, this boiler will provide the ideal level of comfort for your home.

  • Page 4: Table Of Contents

    ..........................42 EED AUGER FILLING 12.2 F ........................43 EED AUGER CALIBRATION 12.3 M .................... 44 ANUAL SETTING OF FEED AUGER CALIBRATION 12.4 M ......................44 ANUAL ASH CLEANING ACTIVATION 12.5 M ....................44 ANUAL CIRCULATION PUMPS ACTIVATION BIOCLASS iC DX...
  • Page 5 CHARACTERISTICS 24 DIAGRAMS AND MEASUREMENTS ................... 65 25 CONNECTIONS DIAGRAM ....................... 67 25.1 B ............................. 67 OILER 25.2 B ............................68 URNER 26 ELECTRICAL DIAGRAM ......................69 27 TECHNICAL DATA ........................70 28 ALARM CODES ........................72 BIOCLASS iC DX...

  • Page 6: List Of Components

    19. Automatic air vent. 8. Safety valve. 20. DHW safety valve. 9. Stainless steel Tank in tank system. 21. Exhaust fan. 10. Heating expansion vessel. 22. Chimney connection. 11. Heat Exchanger. 23. Drainage valve. 12. Pellet inlet thermostat. BIOCLASS iC DX...
  • Page 7 Also it is used to the "Setup menu". Touch this button to access exit from any of the menus or parameters of the the settings options. boiler without saving it and to return to the previous menu level. BIOCLASS iC DX...

  • Page 8: Installation Instructions

    If the boiler is installed at a lower height than the heating installation, it is recommendable • to create a siphon at the boiler outlet, to prevent the installation from heating up due to natural convection when heating is not required. BIOCLASS iC DX...

  • Page 9: Cylinder

    DHW safety valve. 2.3 Fuel Bioclass iC DX boiler must be fuelled by DIN PLUS certified wood pellet. The DIN PLUS or EN PLUS A1 certificate assures that the fuel’s humidity levels and calorific value are ideal for optimum boiler functioning.

  • Page 10: Installing The Hopper

    2.4 Installing the hopper DOMUSA TEKNIK supplies a hopper for storing the pellets with the boiler. The tank is reversible and can be mounted on either the left or right side of the boiler. It is also equipped with adjustable feet for height regulation.

  • Page 11: Installation Of A Room Temperature Sensor Or Thermostat

    For the correct connection of a room sensor to the Bioclass iC DX boiler, proceed as follows: Unplug the boiler from the mains.

  • Page 12: Electrical Connection

    2.7 Combustion product removal Bioclass iC DX boiler is a biomass boiler and it is essential for it to be connected to a flue, i.e. a smoke duct able to create a pressure drop (which in this case should be between 0,05 and 0,20 mbar), in compliance with the applicable laws to this regard.

  • Page 13: Bio Hydraulic Kit Installation

    2.8 BIO hydraulic kit installation In option a BIO hydraulic kit, within the kits range offered by DOMUSA TEKNIK, could be connected to Bioclass iC DX boiler. In that way the features of the boiler will be increased. Look at the following instructions for a correct installation: Unplug the boiler and the hydraulic kit from the main power supply.

  • Page 14: Installation With Abt Buffer Tank (Optional )

    2.10 Installation with a BT Buffer Tank (Optional) The Bioclass iC DX boiler can be accompanied by a BT Buffer Tank during the installation from the wide range offered by DOMUSA TEKNIK, which may increase the benefits provided by the boiler in the heating service.
  • Page 15 The temperature of the BT tank is controlled and managed by a temperature sensor (Sbt) immersed in the buffer tank and electrically connected to the boiler. The temperature sensor is optionally supplied by DOMUSA TEKNIK and it can be purchased at any warehouse specialized in heating supplies.
  • Page 16 The temperature of the BT tank is controlled and managed by a thermostat (Tbt) installed and immersed in the buffer tank and electrically connected to the boiler. The temperature control thermostat is not supplied by DOMUSA TEKNIK but can be purchased at any specialist central heating supplies warehouse.

  • Page 17: Commissioning Of The Boiler

    Switching on the boiler with no water inside could result in serious damage. 3.3 Initial calibration of the feed auger Bioclass iC DX boiler is equipped with a feed auger to supply the fuel. Follow the instructions described "Installing the hopper”...

  • Page 18: Commissioning

    3.4 Commissioning In order for the guarantee to be valid, the boiler must be commissioned by personnel authorised by DOMUSA TEKNIK. Before beginning the commissioning, the following must be complied with: The boiler must be plugged in to the mains.

  • Page 19: Digital Display

    4 DIGITAL DISPLAY Bioclass iC DX boiler is equipped with a digital touch display for viewing and adjustment of the different boiler settings. The display has various display areas where different icons and numbers appear to indicate the different status of the boiler.
  • Page 20 It is displayed when any value or setting related to the boiler and/or the burner is shown by the numerical digits. It is displayed when a value or setting related to DHW tank is shown by the numerical digits. BIOCLASS iC DX...
  • Page 21 It is displayed when any of the is in browse mode. SET It is displayed when the parameter shown by the numerical digits is adjustable and it is displayed blinking when the parameter is in adjustment mode. BIOCLASS iC DX...

  • Page 22: Operation

    5 OPERATION Bioclass iC DX is set by default as an “Only Heating” boiler (Heating zone 1). In option, it is possible to connect a BIO Hydraulic Kit to increase the features offered by DOMUSA TEKNIK. 5.1 “Only heating” operation “Boiler temperature set...

  • Page 23: Boiler Temperature Set Point Selection

    There are three different DHW SET modes: OFF: DHW function disabled. • ECO: Reduced comsuption DHW set. • PLUS: Maximum DHW production set. • BIOCLASS iC DX...

  • Page 24: Selecting The Setpoint Temperature Of The Buffer Tank (Only With Buffer Tank)

    (radiators heating circuit) the K-factor curve should to be 1 or higher and for low temperature heating circuits (underfloor heating circuit) it should be 0.8 or less. IMPORTANT: To connect the outdoor sensor AFS to BIO Hydraulic Kit, follow the connection instructions provided within the Kit. BIOCLASS iC DX...

  • Page 25: Operating With Bio Hydraulic Kits (Optional)

    6 OPERATING WITH BIO HYDRAULIC KITS (OPTIONAL) All the models within Bioclass iC DX range of boilers may be installed together with a BIO Hydraulic Kit to regulate more than one heating circuit. Up to 3 heating circuits can be managed depending on the BIO Hydraulic Kit chosen.

  • Page 26: Operation With A Bt Buffer Tank (Optional)

    7 OPERATION WITH A BT BUFFER TANK (OPTIONAL) The Bioclass iC DX boiler can be accompanied by a BT Buffer tank from the wide range of tanks offered by DOMUSA TEKNIK. This tank accumulates heat energy that improves the performance of the system when switching the boiler on and off.

  • Page 27: Operation With A Control Thermostat In The Bt Buffer Tank (P.08 = 4)

    5 to 10 °C higher. The modulating burner of the Bioclass iC DX boiler will start working to heat the water within it. When the boiler temperature exceeds 60 ºC the feed pump for the buffer tank (Bbt) will start up to heat the BT tank, provided that its control thermostat is activated (demanding heating).

  • Page 28: Operating With Lago Fb Ot+ Remote Control (Optional)

    8 OPERATING WITH LAGO FB OT+ REMOTE CONTROL (OPTIONAL) A remote control (LAGO FB OT+) can optionally be supplied together with Bioclass iC DX boiler. This remote control can be used to fully operate the boiler from anywhere in the room in which it is installed.

  • Page 29: "Iconnect" Connectivity

    Wi-Fi network in the place where the boiler is installed. In turn, the Wi-Fi module built into the Bioclass iC DX boiler is only compatible with 2.4 GHz frequency Wi-Fi networks. The connection and registration in the iConnect application can be done with any device with an Android 4.4 operating system or later or iOS 13 or later (iPhone 6S terminal or later), and must...

  • Page 30: Boiler Registration In Iconnect

    APP (right part of the APP), the user will be able to select the boiler they want to manage at all times, as well as the desired heating zone, if there is more than one installed. BIOCLASS iC DX...

  • Page 31: Description Of The Iconnect Application

    In addition, the front door or on the back cover of this manual, of the Bioclass iC DX has a visible QR code that can be used to directly access the iConnect area of the DOMUSA TEKNIK website..
  • Page 32 "Privacy Policy" • About: Use this option to access the verify the version of the Application. • Close session: Clicking on this option will close the user session and redirect "Login" you to the screen of the Application. BIOCLASS iC DX...

  • Page 33: User Menu

    . Pressing it whilst in programmed mode will deactivate said mode and activate manual mode. (Only with the Bio Hydraulic Kit and room sensor connected). Real room temperature of Zone 3 (Only with the Bio Hydraulic Kit and room sensor connected). BIOCLASS iC DX...
  • Page 34 Actual boiler temperature. Actual boiler water pressure. Actual active boiler temperature set point. Mixing heating circuit nº 1 flow temperature set point setting (18) by means of the tactile button (BIO Hydraulic kit option only) BIOCLASS iC DX...

  • Page 35: Ashtray Status

    “0” by pressing "-" for DHW The display of the notices is as follows: : Ashtray fill level between 0 and 75 %. flashing: Ashtray fill level between 75 and 100 %. flashing: Ashtray fill level more than 100 %. BIOCLASS iC DX...

  • Page 36: Setup Menu

    (Only with the Bio Hydraulic Kit and room sensor connected). Boiler timer programming. CVS Suction System timer programming. (CVS Suction System option only) DHW recirculation function timer programming. (DHW tank option only) Time setting. Ashtray empty warning function. Manual setting of feed auger calibration. BIOCLASS iC DX...

  • Page 37: Timers Programming Process

    The following sections describe in detail all the parameters included in the 11.1 Timers programming process The Bioclass iC DX boiler allows you to set up to 3 different daily time schedules, time schedule for the boiler, time schedule for the automatic pellet loading system (if connected) and time schedule for the DHW recirculation pump (if this function is activated , see "Technical Menu").

  • Page 38: Heating Time Schedules

    To disable the timer, select boiler timer programming ( and set it to “- - - -“ by pressing "-" of the boiler temperature touch button (18) . The boiler timer will be cancelled and it will be switched on permanently. BIOCLASS iC DX...

  • Page 39: Cvs Suction System Timer Programming (Cvs Suction System Option Only)

    When the boiler is registered in iConnect, it will not be necessary to set the time as it will be automatically set and synchronised by the APP, so this screen from the "Configuration" menu will not be displayed. BIOCLASS iC DX...

  • Page 40: Ashtray Empty Warning Function

    Bioclass iC DX boiler model which, depending on the quality and type of fuel, will have to be adjusted for each system.

  • Page 41: Calibration Menu

    In the following table are listed all the parameters and processes included in Nº. Parameter Display Feed auger filling Feed auger calibration Manual setting of feed auger calibration Manual ash cleaning activation Manual circulation pumps activation BIOCLASS iC DX...

  • Page 42: Feed Auger Filling

    Follow the steps shown in the following pictures for a correct filling of the feed auger: IMPORTANT: It is compulsory to fill the feed auger during the commissioning or when the hopper runs out of fuel. BIOCLASS iC DX...

  • Page 43: Feed Auger Calibration

    This process must be carried out at least twice to ensure the correct amount of fuel has been added. Follow the steps shown in the following pictures for a correct calibration of the feed auger: IMPORTANT: Calibrate the feed auger during commissioning of the boiler or whenever the fuel supplier has been changed. BIOCLASS iC DX...

  • Page 44: Manual Setting Of Feed Auger Calibration

    20 minutes. By pressing the circulation pumps can be stopped at any time and by pressing RESET it will return “Calibration Menu” level. BIOCLASS iC DX...

  • Page 45: Technical Menu

    P.02 Minimum boiler heat output (%) P.03 Maximum boiler heat output (%) General fan speed factor (%) P.04 (Visible only with C.01 = 0 or C.01 = 1) P.05 Fuel for ignition (g) P.06 Fuel consumption (kg/h) BIOCLASS iC DX...
  • Page 46 (Only with Bio Hydraulic Kit option) P.13 Boiler minimum temperature mode P.14 Minimum boiler temperature (ºC) P.15 Heating pump post-circulation time (min) Legionella protection function P.17 (DHW tank option only) P.18 Boiler's pump operating mode (BC) P.19 Minimum boiler water pressure (bar) BIOCLASS iC DX...
  • Page 47 K curve of the direct circuit (Zone 1) Type of room temperature device in Zone 1 P.46 (Direct circuit) Type of room temperature device in Zone 2 P.47 (Mixed circuit 1) (Only with Bio Hydraulic Kit option) BIOCLASS iC DX...

  • Page 48: Entry And Set The Access Code ("Cod

    Press the "+" o "-" for heating symbols to browse trough the digits and press the "+" o "-" for DHW symbols (19) to set each digit. By default, the access code is “1234”. The P.25 parameter allows to set a new access code. BIOCLASS iC DX...

  • Page 49: Boiler's Setup Parameters

    The range of values selectable is 1.00 - 30.00 kg/h. 14.6 Fuel type (P.07) By default Bioclass iC DX boiler is configured to burn wood pellets. By means of parameter P.07 another type of fuel may be selected: P.07 = 0 =>...

  • Page 50: Managing Bt Buffer Tanks

    This parameter depends on the installation and must be set by the installer once the buffer tank has been assembled. The factory default value is 0, management function of BT buffer tanks disabled. The electronic control of the Bioclass iC DX boiler is able to manage the operation of 2 different types of installation.

  • Page 51: Heating Circuit's Setup Parameters

    15.3 Minimum boiler water pressure (P.19) Bioclass iC DX is equipped with a water pressure sensor that makes possible to know the pressure of the boiler. If the pressure descends below the value set at P.19 parameter, the electronic controller Safety lock-outs locks out the functioning of the boiler and E-19 alarm code is displayed (see “...

  • Page 52: Room Temperature Hysteresis

    Through these parameters it is possible to compensate the temperature measurements differences in the temperature sensors. Selectable range P.51 (zone 1), P.52 (zone 2) and P.53 (zone 3) is -5,0 - +5,0 ºC and the default value is 0,0 ºC. BIOCLASS iC DX...

  • Page 53: Dhw Circuit's Setup Parameters

    16 DHW CIRCUIT'S SETUP PARAMETERS The BioClass iC DX boiler is equipped with an electronic controller to regulate a domestic hot water production service. The following parameters are used to configure the ACS service related parameters. These parameters will only be accessible in the "Technical Menu".

  • Page 54: Additional Functions

    The Bioclass iC DX boiler incorporates the following additional control functions: 17.1 CVS Suction System cycle time (P.22) Bioclass iC DX boiler allows the installation of an optional automatic fuel loading system named CVS Suction System. By means of parameter P.22 the activation cycle time of the loading system may be set.

  • Page 55: Room Thermostat Connection

    In turn, when there is a room sensor connected, the boiler's digital display will allow the programming (see "Configuration Menu") of the operating hours of the corresponding circuit , so the heating system can be adapted to the hours of use of the installation. BIOCLASS iC DX...

  • Page 56: Multi-Functional Relay

    18 MULTI-FUNCTIONAL RELAY (P.20) Bioclass iC DX is equipped with an auxiliary relay output that may be used to select a series of additional functions that increase the boiler performance, features and comfort of the installation. “Technical Menu” "multi- Several operating modes may be set at P.20 parameter of the to define the functional relay"...

  • Page 57: Cleaning The Ash Drawer

    19 CLEANING THE ASH DRAWER Bioclass iC DX boiler is equipped with an ash drawer, where the solid residues from the burnt fuel are collected on cleaning procedures of the burner and heat exchanger. This drawer must be regularly cleaned to prevent ash from accumulating and obstructing heat exchanger, what would cause the boiler to block out.

  • Page 58: Safety Warnings

    DOMUSA TEKNIK shall not be liable for any damage caused to people, animals or property as a result of incorrect handling of the ash drawer or the ash itself.

  • Page 59: Safety Lock-Outs

    This lock-out occurs when the temperature of the fuel entrance tube exceeds 80 ºC. To unblock the boiler operation, once the tube temperature has dropped, press the reset button incorporated in the (see figure) safety thermostat and press the RESET symbol on the boiler control holder to restart operation. BIOCLASS iC DX...

  • Page 60: Low Pressure Lock-Out

    Use the drain cock located on the bottom of the backside of the boiler to empty it of water. Before opening it, connect a flexible pipe leaded to a sewer. After finishing the procedure, close the cock and remove de flexible pipe. BIOCLASS iC DX...

  • Page 61: Boiler Maintenance

    23.2 Burner cleaning procedure The Bioclass iC DX boiler has a burner (combustion chamber) where the combustion of the wood pellets takes place. This burner must be cleaned regularly to avoid premature fouling due to the accumulation of slag (solid combustion residues) adhering to the burner walls.
  • Page 62 Dust can also accumulate at the bottom of the hopper, depending on the quality and humidity of the wood pellets. If there is a large quantity of wood pellet dust in the hopper, DOMUSA TEKNIK-s authorised technical assistance service must be contacted for maintenance.

  • Page 63: Heat Exchanger Cleaning Procedure

    23.3 Heat exchanger cleaning procedure The following procedure is recommended for correctly cleaning the heat exchanger: BIOCLASS iC DX...

  • Page 64: Draining The Condensate Water

    It is MANDATORY that maintenance operations be carried out by an approved professional • from the DOMUSA TEKNIK network, at least once a year on the boiler and twice a year on the flue, according to the standards in force.

  • Page 65: Diagrams And Measurements

    24 DIAGRAMS AND MEASUREMENTS Bioclass iC DX 12 / 18 IC: Heating flow. RC: Heating return. SA: Sanitary water outlet. RC: Sanitary water return. IC’: Heating Flow optional. SH: Fume outlet. V: Drainage cock. VS: Pressure e relief valve, 1/2" F.
  • Page 66 S Hopper L Hopper S Hopper L Hopper Size Size Bioclass iC DX 18 370 Litres 560 Litres Bioclass iC DX 25 : Combustion period in hours at Q BIOCLASS iC DX...

  • Page 67: Connections Diagram

    BC: Boiler pump. J3: Component connector. NO: Multi-functional relay. J4: Communication connector. NC: Multi function relay. J5: LAGO FB OT+ remote control connector. : Room Temperature Device. J6: Room Temperature Device connector. Sc: Boiler temperature sensor. J7: Sensors connector. BIOCLASS iC DX...

  • Page 68: Burner

    25.2 Burner Qout: Burner outputs connector. R: Ignition heater. LC: Burner ash cleaning device. : Closed switch. : Open switch. Qin: Burner inputs connector. FR: Photocell. FCp: Ash cleaning device switch. BIOCLASS iC DX...

  • Page 69: Electrical Diagram

    LCD: Display communication connector. Cv: Fan capacitor. J4: Communication connector. SPW: Water pressure sensor. Vac: iConnect card power supply SPA: Air pressure sensor. C1: iConnect card power supply Qout: Burner outputs connector S1, S2: Boiler model DIP-switch. BIOCLASS iC DX...

  • Page 70: Technical Data

    Electrical supply 230 V~, 50 Hz, 2,50 A Boiler chimney diameter Maximum water content of the fuel Minimum return temperature ºC 25 ºC Water pressure drop (dT = 20 K) mbar Noise level (according to 15036-1) Weight (net) BIOCLASS iC DX...
  • Page 71 Electricity consumption in standby mode (P 0,007 0,007 Energy Efficiency Index - EEI * It is recommended to use the boiler with a hot water storage tank of a minimum volume of 20 x Pn with Pn indicated in kW. BIOCLASS iC DX...

  • Page 72: Alarm Codes

    28 ALARM CODES Bioclass iC DX boiler is equipped with an electronic controller that performs continuous self-testing to detect any boiler malfunctioning. When it detects a functioning error, this is indicated by an alarm code on the display. The table below shows the list of the alarm codes:...
  • Page 73 Underfloor temperature sensor short-circuited, it replaced. E-33 Sr2. Outdoor temperature sensor open circuit, E-34 Outdoor temperature sensor is damaged or disconnected. Sext. Contact your nearest official technical assistance service to have Outdoor temperature sensor short-circuited, it replaced. E-35 Sext. BIOCLASS iC DX...
  • Page 74 Zone 2 TaM room sensor E-59 The Zone 2 room temperature device is broken or open circuit. disconnected. Please contact your nearest official Zone 2 TaM Technical Assistance Service to have it replaced. E-60 room temperature sensorshort-circuited. BIOCLASS iC DX...
  • Page 75 The serial number of the boiler has not been registered There is no serial number on the on the iConnect electronic card. E-65 iConnect module. Please contact your nearest Official Technical Assistance Service to correctly register it. BIOCLASS iC DX...
  • Page 76 HEADQUARTERS & FACTORY Apartado 95 Bº San Esteban s/n CDOC002496 18/10/21 20730 AZPEITIA 20737 RÉGIL (Guipúzcoa) www.domusateknik.com Spain Tel: (+34) 943 813 899 DOMUSA TEKNIK reserves the right to make modifications of any kind to its product characteristics without prior notice.

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