The pellet conveyor (external auger) transports pellets from the pellet container to the burner. The burner controls the work of the external auger. The external auger is connected to the burner with a special ∅ 60mm hose. The hose is made of melting polyurethane material. It acts as a safety measure against back-burning because melts in back-burning.
External auger can be fixed to a ceiling or container depending on conditions at the site. Figure 11 depicts correct installation of external auger. As melting hose is a safety element, it has to be installed strictly as follows: