Manual Steel Boiler Suitable capacity options between 18.000 kcal/h-400.000 kcal/h. Ambient temperature is kept constant at by using thermostat conroller. Opportunity for working wood, coal, bagasse etc solid fuels. Opportunity for cleaning in short time with practical ash cleaning mechanism. Adjusting device temperature with digital screen control panel and seeing usage data. MKK Series are central heating boilers with fans which work with manuel fueling principle, fully electronic equipped. They are produced in suitable capacities for individual use as well as for centralized system use. Wood, coal, mining coal and lignite coal can be used as fuel. The boiler also provides hot water for use with a boiler addition. The heat transfer surface is high. Heat losses are minimized by high thermal insulation. With the advanced electronic control function, the combustion air is adjusted according to the amount of fuel. Thus, more energy is thrown into the chimney and the burning up the fuel is prevented. The integrated electronic circuit system and fan speed automatically adjust according to the chimney status. The water temperature in the system is set from the digital display on the device. When the fuel in the boiler is completely exhausted and the system temperature drops below 25 degrees, the unit switches itself off automatically.