The new FT Series light commercial boilers are available in 301 and 399 MBH sizes. Featuring stainless steel firetube heat exchangers, the boilers operate with up to 10:1 turndown, can be used with natural gas or propane fuel, and run at an ultra-high 95%+ thermal efficiency. Each FT Series unit is equipped with onboard high- and low-temperature zone control, DHW Smart Priority functionality that allows simultaneous space and domestic water heating, BMS compatibility and can cascade up to four units. Additionally, a sensor actively monitors incoming air for cross-contamination from exhaust flue gases. This unique feature issues an alert when cross-contamination is present, indicating that the vent system should be evaluated to help keep the boiler running trouble-free. The units can be wall-hung or floor-mounted with optional stand package. Top and bottom gas and water connections and venting up to 150 equivalent feet offer increased installation flexibility.

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