Oil-Fired, High Efficiency,
3-Pass Water Boilers
Burnham’s MPO Boiler
Unique 3-Pass Cast Iron Design
The MPO boiler has been exclusively designed by Burnham engineers to use a 3-pass cast iron sectional design that is unequaled in the industry. MPO sections are produced in Burnham’s own state-of-the-art foundry in Zanesville, Ohio, and are the primary reason why the MPO is able to attain an ENERGY STAR-certified 87% AFUE.
Built-in Return Water Boiler Protection
Every MPO boiler comes equipped with a unique return water blending device that automatically mixes hot boiler water with cool return water. This device also aids in keeping temperatures consistent within the boiler which provides greater operational efficiencies and allow the boiler to operate with virtually any type of hot water system.
Easy to Install, Maintain, and Service
From installation to service, the MPO has been designed with the contractor in mind. Installation features include a plug-and-play wiring junction box with easy plug-in control and accessory connections, and a reversible swing-away door with an easy connect power cord for the burner. The MPO includes a Honeywell electronic high-limit aquastat and provisions for optional plug-in accessories, such as a low water cutoff or an additional high-limit. For maintenance and servicing, the MPO comes equipped with reversible stainless steel flueway baffles, rear cleanout access plates, and ample flueway clearance for easy cleaning.
Multiple Burner Options
Burnham offers the flexibility of multiple burner choices for the MPO boiler. A selection of burners from industry-leading manufacturers is available for all MPO sizes*.
MPO Direct Vent Kit
No chimney? The MPO-DV (Direct Vent) Option Kit is the perfect solution! The venting kit includes a stainless steel sidewall concentric vent/air intake termination. To connect the boiler flue connects to this piece, a flexible stainless steel, double wall, insulated pipe is also available in 5, 10, 15, and 20 foot lengths.
Intake air for combustion connects directly from the burner housing to the vent terminal with a 4” galvanized single wall pipe.
Additional Venting Options
MPO-DV Option Kit’s flexible stainless steel pipe permits installation in just about every application where a chimney is not available. For added convenience in installations where there is little clearance behind the boiler, optional stainless steel “starter tees” are now available. These tees fit directly to the rear of the boiler and allow for the pipe to be connected vertically. This dramatically reduces the footprint of the boiler installation, by allowing the MPO to be installed close to a wall. Featuring
welded stainless steel construction, the tees are equipped with a convenient, handle- operated, removable bottom cleanout plate.
