The TriFire TRB features an even more compact design than it’s predecessor for even easier installation. The unit features a High Limit Control With LED Display, easy-to-program Dial Settings, a Boiler Water Temperature Reset and Low Water Cut-Off functionality. Wide flue ways, a flexible oil line, dual hinged swing door with left or right mount option, site glass and a test port make the TriFire easy to service. TriFire’s low mass design is eco-friendly, too, with an AFUE as high as 87% and low standby losses.