Hard coal Seasoned wood Energy pea Certified boiler steel (P265GH) with the thickness of 6 mm PID control 4 year warranty for the leakproofness of the exchanger Burner made of 100% cast iron Boiler equipped with two combustion chambers Enlarged combustion chamber allowing greater bulldozing in Room controller (optional) Operation in the closed system (optional) Support for the mixing valve and 4 pumps Device characteristics EKO-PRIM boilers are highly efficient devices equipped with the double combustion chamber. The lower chamber is equipped with the durable cast iron retort feeder, which is designed for automatic combustion of eco-peas. The upper part with the water grille allows you to use traditional fuels, such as coal and wood. With this design solution, we get complete freedom in the selection of fuel used. The technically-advanced Tech ST-480 controller with PID supports 4 pumps (C.O., hot tap water, circulation and floor), providing high comfort of use. Large fuel tank allows for maintenance-free operation for 3-4 days. Fuel for the automatic feeder: hard coal, purified energy pea 31-2, granulation: 5-25 mm. Fuel for the traditional combustion chamber: seasoned wood, hard coal. Specifications of the boiler Eko-prim