... 3. Furnace with wet back offset arrangement, high temperature gas erosion followed by the second and third return pipe, ... room through the chimney into the atmosphere. World famous boiler burner configuration, using automatic combustion ratio adjustment, automatic regulation, ... Fuels Available/Heavy oil, light oil, natural gas, liquefied gas, city gasOil (gas) consumptionKg/h(N m3/h)68(78)102 ...