The Burnham MPO boiler series includes five sizes ranging in capacity from 0.6 to 1.65 gallons; this line has been discontinued in favor of the similar MPO-IQ series, which includes the IQ control system from Honeywell.
The MPO series of cast iron, oil-fired, high-efficiency boilers operate at 87 percent AFUE and are Energy Star-qualified. They also are capable of three vent options using stainless steel connections. The unit is surrounded by 3 inches of insulation and a steel jacket with powder coating.
The heat exchanger for the MPO series has individual cast iron sections contoured by a computerized machine to ensure the accuracy of the shape and fit are precise. The series� design is intended to provide above-average efficiency as heat in the flue gases is recirculated into the heat exchanger before venting takes place. The removable flueway baffles also are meant to maximize efficiency, while making cleaning and installation simple. In addition, the unit has a built-in second zone control. A choice of burners, including the Beckett NX burner, is available.
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