The design of the boilers is three-pass with a flame tube, a rear rotating chamber cooled by water, a closed membrane wall, two-pass heat pipes, an uncooled second (front) rotating chamber and a smoke collector.
The boilers are supplied as a standard right-hand version (right-hand control). At the request, boilers can be supplied in the left version.
Above the flange for connecting the burner and in the rear rotating chamber there are inspection holes for optical control of the flame tube. For internal boiler inspection, hatches and holes are installed in the boiler body.
All heating surfaces are easily accessible for cleaning, which ensures constant high efficiency, even with long-term operation of the boiler on liquid fuel. The boiler materials and seamless pipes were used to comply with EN 10028 and EN 10216.