Oil-Fired, High Efficiency, 3-Pass
Water Boilers
• High Efficiency 87% AFUE
• 3-pass Cast Iron
Sectional Design
• Natural Draft Oil Boiler
- Five Sizes Available, 0.60-1.65 gallons
• Direct Vent Option Kit
- Three Sizes Available, 1.05-1.65 gallons
• Easy Installation and Servicing
with Reversible Swing Doo
and no Target Wall or
Blanket Required
• Multiple Burner Options
Plug-In Connectors,
Concealed Wiring
Harness
Provides easy hook-up
of additional controls,
Wiring harness is
hidden beneath the
jacket, providing a clean
appearance.
Honeywell Aquastat
The standard Honeywell L7248
electronic aquastat, includes digital
display and interface capability to
provide diagnostic information.
3” Insulation
Surrounds boiler
block which reduces
heat loss through the
boiler jacket.
3-Pass Cast Iron
Heat Exchanger
Flue gases are
recirculated through
the heat exchanger,
extracting the
maximum BTUs
possible from the
combustion process.
Large, Geometric
Combustion
Chamber
Without a target
wall or blanket,
increases heat
transfer and reduces
costs on repair
parts.
Removable Flueway
Baffles
Allow the MPO to be
installed in a variety of
chimney applications and
permit easy cleaning
Reversible
Swing-Away
Burner Door
Offers easy access
to combustion
chamber for
cleaning.
Integrated
Boiler Door
Support
Holds weight of
boiler swing door
in closed position,
reducing stress &
wear on hinges.
Burnham
Alliance SL™
Indirect-fired Water Heaters
The Alliance SL water heaters are designed with
an effective hydrastone lining that offers superior
corrosion resistance and outstanding performance in a wide
variety of water conditions.
Water heaters are available in five sizes from 27-119 gallons,
and come with a unique 10/2/1 warranty – 10 years on the
tank and coil, 2 years labor and 1 year on parts.
Ratings
Model
DOE
I=B=R
Number
Burner Capacity (GPH)
Heating Capacity (MBH)
Water Ratings
AFUE%
87
MPO84
MPO115
MPO147
MPO189
MPO231
.60
.80
74
98
64
85
87
87
87
87
1.05
1.35
1.65
129
167
203
112
145
177
Specifications
Dimensions (inches)
Natural Vent
Approximate
Direct Vent
Approximate
Model
Water
Number
‘A’
‘B’
24
24
24
30
30
‘C’
5
Content (gal.) Shipping Weight (lbs.) Shipping Weight (lbs.)
MPO84
16-5/8
16-5/8
22-5/8
28-5/8
34-5/8
7.70
7.70
475
475
567
659
751
N/A
N/A
579
692
807
MPO115
MPO147
MPO189
MPO231
5
6
11.08
14.46
17.84
6
7
MPO Direct Vent Kit
Model
Vent Connector
Optional Starter “T”
Depth ‘D’ (Inches)
Number
Diameter (inches)
MPO147
MPO189
MPO231
5
5
6
14
14.5
14.5
Optional
Stainless Steel
DV Starter“T”
5“
22
‘A’
8
‘D’
‘B’ MIN.
FRONT SERVICE
CLEARANCE
‘C’ DIA.
COLLAR
(FLUEWAY CLEANING)
33”
3“
8
21
TOP VIEW
FRONT VIEW
SIDE VIEW
BACK VIEW
© 2008 U.S. Boiler Company, Inc. - Lancaster, PA
Phone: 1-888-432-8887
Form No. PL81401301000-9/08-10M
Printed in the U.S.A.
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