MAIN FEATURES: - High efficiency heat generator on gas fuel, floor-standing, open and semi-cooled combustion chamber, natural draught flue exhaust, for the production of hot water for central heating. - G20 cast-iron boiler body made from pre-assembled elements (4-7), insulated by a layer of rock wool lined by tear-proof ceramic fibre fabric. - Air intake burner with heads (3-6) made from AISI 304 steel, electric ignition with intermittent pilot flame and safety device that measures the ionisation current produced by the flame. - Variable heat input, with two-stage operation. - Flue manifold with semi-incorporated draft diverter-wind shield device. - Steel casing painted white by anaphoresis using epoxy powder paint. ADVANTAGES OF THE PEGASUS F1 N: - Safety, thanks to the use of a single valve block with on-off mechanisms controlled independently by the control thermostat and by the safety thermostat. - Sturdiness, due to the excellent quality of the materials used and the strict tests performed on the cast-iron elements. - Efficiency, due to the special layout of the cast-iron exchanger element with large finned surface, the stainless steel burner and the effective insulation of the boiler body. - Rational construction, highlighting the simplicity of installation and maintenance operations. - Possibility to install the modules with a side-by-side or opposing layout. - Ready to connect the control unit. - Cascading operation ( ISPESL certified). - Operation on LPG using a special conversion kit to be requested when ordering.