Steel hot water boiler with two combustion chambers is intended for firing wood pellets and logs. In the pellet combustion chamber is installed the burner for wood pellet firing with the automatic pellet firing and automatic grate cleaning function and in the second combustion chamber the wood gasification principle enables burning of logs.

Multifunctional digital boiler control using lambda probe and underpressure fan optimizes combustion in both combustion chambers, which increases the efficiency of the boiler. The pellet tank is an integral part of the boiler to which the automatic vacuum pellet supply can be installed. The installation of the accumulation tank (CAS) is obligatory. It is possible to expand the boiler control with the CM2K module (steering of 2 heating circuits to the outside temperature, max.4xCM2K), alarm message and boiler start/stop module CMGSM.