BIO-TEC steel hot-water boilers (with a heat output of 25-45kW) are designed for wood burning in a smaller and medium-sized building. The principle of gasification ensures complete firewood burning. The boiler has a large combustion chamber, which allows the insertion of 550 mm long logs. The combustion period for one firewood is at least 4 hours to 12 hours. The boiler is equipped with a regulator that controls the operation of the boiler. The boiler must be connected to the central heating system using a 3-way thermostat and a storage tank.BIO-TEC Boiler Characteristics:•The hot water central heating boiler is designed for wood burning (wood moisture content is not more than 25%); •The principle of gasification ensures complete combustion of firewood, which minimizes the frequency of cleaning the boiler to a minimum (depending on wood quality and how the boiler is used); •Boiler design, flue gas solution, and their additional burning, ensures a high level of efficiency and makes it very economical; •Nature-friendly boiler, producing very little harmful exhaust gases; •Three large doors provide easy cleaning of the boiler and easy wood burning; •The boiler is designed for an open and closed type central heating system, using an appropriate storage tank.