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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.
* Direct Vent boilers require the use of dedicated direct-vent compatible burners, such as the Beckett
NX. Additional burners may be available, please contact your Burnham supplier for details.