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MPO-IQ
Boiler Model
Burner Capacity
(GPH) AFUE%
MPO-IQ84 0.60 87.0
MPO-IQ115 0.82 87.0
MPO-IQ147* 1.05 87.0
MPO-IQ189* 1.35 87.0
MPO-IQ231* 1.65 87.0
Models, Sizes, Efficiencies
*Direct vent option available
Cast Iron, Oil Boilers
Indirect Water Heaters
For complete technical specifications and dimension information on the products listed here,
please visit our website at www.usboiler.net
USBL13022-10ms
Condensing Boilers & Cast Iron
Gas Boilers
www.usboiler.net
U.S. Boiler Company offers a complete line
of ultra-high efficiency Burnham condensing
boilers and high efficiency Burnham cast iron
gas boilers. For information on these products,
please see product literature or visit
www.usboiler.net
MegaSteam
Boiler Model
Burner Capacity
(GPH) AFUE%
MST288 0.75 86.0
MST396 1.05 86.0
MST513 1.35 86.0
MST513 1.65 86.0
V8H – Water
Boiler Model
Burner Capacity
(GPH) AFUE%
V8H3 (W) 1.05 85.0
V8H4 (W) 1.35 85.3
V8H5 (W) 1.65 85.3
V8H6 (W) 1.90 85.3
V8H7 (W) 2.10 85.3
V8H8 (W) 2.35 82.0*
V8H9 (W) 2.60 82.3*
*Thermal efficiency
V8H – Steam
Boiler Model
Burner Capacity
(GPH) AFUE%
V8H3 (S) 0.75 85.1
V8H4 (S) 1.05 85.3
V8H5 (S) 1.35 85.4
V8H6 (S) 1.65 85.7
V8H7 (S) 2.10 84.7
V8H8 (S) 2.35 84.1*
V8H9 (S) 2.60 82.3*
*Thermal efficiency
Alliance SL Models
Model
Storage
Capacity
(gal.)
Maximum First
Hour Rating at
135°F
(gal./hr.)
Continuous
Draw Rating at
135°F
(gal./hr.)
Standby Heat
Loss
(°F per hour)
AL27SL 27 192 162 0.97
AL35SL 35 200 162 0.72
AL50SL 50 225 171 0.56
AL70SL 70 294 217 0.45
AL119SL 119 339 235 0.39
Before purchasing, read important information about estimated annual energy consumption, yearly
operating cost, or energy efficiency rating that is available from your retailer.