Characteristic characteristic of the TROTEX heating boiler is a principle of the bottom burn (optional bottom-upper). Particular elements of the heating boiler made are of 6mm-8mm-10mm metal sheets – due to the aggressive action of organic substances. The exchanger of the heating boiler was constructed with vertical panels, and directly above the hearth a storage container and an additional door are installed. A combustion chamber has a beam cast-iron grate, ceramic laying out and the row of aerating nozzles, in the ensure the most effective combustion process. The TROTEX heating boiler was adapted to the burn of biomass (sawdust, briquettes, sheet timber waste). This heating boiler is also being sent for the periodic burn of the hard bituminous coal, after contemporary dismantling the storage container. Trotex is straight and easy-going in the everyday service. Door opening loading is being assisted with gas servomotor, and fill in of heating boiler designed in order to facilitate the loading with big piece of woods. Combustion of the heating boiler at full will fill in with biomass is taking out from 5 up to 10 hours.