WESTFIELD, Mass. — RBI Torus condensing watertube boilers and water heaters now feature 10:1 turndown, further optimizing performance efficiency. Torus utilizes a pressure-driven air/fuel mixing system to reliably provides up to 10:1 turndown without the negative effects often seen in high turndown systems. This unique pressure-driven system has no moving parts and eliminates common nuisance failures, including ignition lockouts. Torus’ compact high-performance units are available in sizes ranging from 1,250-4,000 MBH with AHRI-certified efficiencies of up to 97.5% on boilers and 98% on water heaters.
At the heart of Torus is the heat exchanger. Made from 316L stainless steel, Torus heat exchangers are manufactured through a process called tube hydroforming, which allows the shaping of stainless steel tubes that are not only stronger and lighter but also have a higher quality surface than competitive heat exchangers. The unique four-pass design works in concert with a multichannel manifold and increased tube diameters resulting in ultra-high efficiency with very low pressure drop. An exclusive telescoping burner door system slides outward, offering full access to the combustion chamber for annual inspection and service.