The steel hot water boilers EKO-CKS Multi, with nominal heat outputs of 160-580 kW, are designed for firing with wood chips, wood pellets, wood shavings or olive pits (olive cake remaining after olive processing). They are intended for connection to closed or open central heating systems in medium sized and large premises. Automatic operation of these boilers offers convenience for the user and a large range of applications. The boilers have an integrated system of automatic delivery and ignition of fuel, automatic ash cleaning and a cyclone to remove particles from flue gases. These boilers are notable for their use of modern technologies, high quality materials in manufacture and simple assembly as well as their control functions. The extensive fully tested technical solutions and quality control ensure these boilers are safe and reliable. The intended fuels are renewable energy resources and therefore ecologically very acceptable.