Bottom combustion boiler "Kamen DRX" is an innovative, solidly constructed and reliable model, that meets the requirements of class 5 according to PN-EN 303-5: 2012 (using firewood). The boiler works optimally at nominal power and with an accumulator tank. The heat exchanger and grates of the Kamen DRX boiler are made of boiler steel 6 mm thick (265 GH). All doors are made of steel and sealed with an environmentally friendly high temperature seal. The top door is for cleaning the boiler. To reduce heat loss, the boiler is insulated with mineral wool and covered with powdered steel. Proven design with double horizontal refraction of gases and secondary air supply ensures high performance. The design of the secondary combustion ceramic plate stabilizes the combustion process and leads to the secondary combustion of the exhaust gases. As a result, the Kamen DRX boiler is characterized by high efficiency and low emissions. Depending on the installation location of the boiler, the chimney can be directed horizontally or vertically.