Q BIO DUO

Double-hearth boilers with automatic fuel feed
that run on biomass, with an emergency water grate.

Q BIO DUO is an advanced heating boiler whose design is based on the Q BIO boiler, but it is higher, which enabled the installation of a horizontal tubular heat exchanger, popularly called a water grate. The advantage of this design is the possibility to use traditional fuel in lack of a suitable fuel for the automatic feeder, or in case of failure.

The automatic control system makes it possible to switch off the feeder and to burn fuel on the grate using fan-assisted airflow with all subunits of the control system of the heating system operating. It is also possible to burn wood on the substitute grate while burning in the automatic burner. The use of the water grate in the fuel feed boiler provides a unit that can be fired with a very wide range of burnt fuels.

Similarly to the Q BIO boiler, the standard version includes an automatic system HT tronic 500B, whereas in the additional option with domestic hot water, a mixing valve, thermostatic lines - in the form of an automatic system HT tronic 500.

Fuel used

 

Controller


The controller is designed to control the combustion process in boilers. The controller is easy to operate, has a number of advanced features that significantly affect the comfort use and boiler operation.  The user has at his disposal a simple and functional control panel with six function buttons - 3 buttons indicated settings with backlight, 5 lights indicate the status of equipment and a clear LCD display enabling viewing  parameters in virtually any lighting conditions (optional backlighting display).

 
   


Basic dimensions and technical data

 

Rated power [kW] 17 25 35 48 55 65 75
     Power range [kW] 5 - 17 8 - 25 12 - 35 15 - 48 18 - 55 22 - 65 25 - 72
     Max. operating temp. [°C]  85 85 85 85 85 85 85
     Water capacity [L] 73 86 120 130 145 155 165
     Min. smokestack draught  [Pa]  20 25 27 29 31 33 35
    System connection [”] 1 1/2 1 1/2 1 1/2 1 1/2 2 2 2
    Smokestack connection  [mm] 150 150 150 150 200 200 200
    Mass of the boiler [kg]  390 420 500 530 560 590 720
    Storage container capacity [dm³]
200 200 300 300 1000 1000 1000
    Width of the set [cm] 121 121 130 130 166 166  166
    A - Width of the boiler [cm] 54 54 68 68 68 68 68
    B - Width of the tank [cm] 58 58 52 52 88 88 88
    C - Depth of the body [cm]  61 71 71 76 77 82 87
    D - Height of the body [cm]  159 159 159 159 179 179 179
    E -  Height to centre of smokestack [cm]  131 131 131 131 152 152 152
    Height of return nozzle [cm]  54 54 54 54 57 57 57
    G -  Width of the hearth [cm] 35 35 50 50 50 50 50
    H -  Height of the hearth [cm] 33 33 32 32 35 35 35
    I - Depth of the hearth [cm] 38 48 48 53 52 57 62
    J -  Height of the loading door [cm] 26 26 26 26 25 25 25

Dimensions

 












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