Central heating boilers - ULTRA DUO PLUS boilers

Hot water boilers Ultra Duo Plus have been destined for customers who like modern solutions in solid fuel burning. These boilers have been equipped with controled burning process. It gives continuous burning so that frequent  fire setting is not necessary. Fuel has been fed by means of worm feeder in controled way depending on temperature  set on control device. Due to retort burner it is possible to burn minimum fuel quantity to get boiler efficiency 84%. Additionaly the boilers have been equipped with emergency grate -it makes possible to burn any other kind of fuel if there is no temporary recommended fuel or if there is no instantanenous electric energy supply. Boiler maintance has been limited to periodical fuel tank filling and ash removal from ash drawer. Control system allows to use water heater in summertime without using house heating system.