• Composite petrol / gas boilers, with a double heating surface of cast iron and steel, for ultra-low temperatures with no minimum limit (Vitola – Biferral heating surface).
• Standard efficiency: 96%.
• The Biferral composite heating surface ensures high efficiency and long service life, and prevents corrosion caused by hot-gas condensation, even at ultra-low temperatures.
• Easy cleaning of heating surfaces. Smooth and continuous hot-gas flues.
• Low pollutant-emissions and clean combustion through Vitoflame petrol burner that perfectly matches the combustion-chamber geometry.
• Economical and environmentally friendly through operating at ultra-low temperatures depending on outside temperatures and shutting down completely when no heat is required.
• Simple installation and commissioning. Vitoflame petrol burners are factory-tested under operating conditions and factory-preset to the rated boiler output.

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