4 poles electrical motor (1450 RPM) with thermal protection and water cooling. Three ceramic pistons, brass linear pump head with built-in by-pass valve. Low voltage and delayed Total Stop. Suction and delivery valves s/s. Vertical burner with high thermal efﬁciency steel coil. Auxiliary motor for air-cooling burner and two ways fuel pump. Regulation Temperature gauge with high sensitive stainless steel sensor. Low fuel light lamp bulb and cut off. Safety valve. Header tank and antiscale device. Panel with analogic controls. Hose-reel (cod. 6.608.0010).