STELT is a commercial hot water condensing boiler for single or modular use. Small dimensions, high water content and very high efficiency (up to 107%) are the main features of this boiler. STELT is an ICI CALDAIE patented condensing to be easily utilized on a new or existing heating circuit.
The furnace, the boiler shell and the horizontal flue sections are fully manufactures in titanium stainless steel AISI 316 Ti.
• Recovery of the latent heat by condensation of the water vapour present in the flue gases.
• Extremely low flue temperature, equal to that of the return water plus about 15°C.
• Twin water return.
