Specifications

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Indirect Fired Water Heaters Installation and Operating Manual
Installation & Operating Manual
8 Performance Data
Indirect Water Heater I=B=R Rating Table 8A
Model
Potable
Water
Volume
Gal.
Heat
Source
Water
Volume
Gal.
Standby
Heat Loss
F/hr
Continuous
Draw
Rating
Gal/hr
First
Hour
Rating
Gal/hr
Minimum
Heat Output
Rate from
Heat Source
Btu/hr
Minimum
Heat
Source
Flow Rate
GPM
Tank Heat
Source
Friction
Loss Feet
W.C
SST150-40 40.0 1.6 0.9 181 208 115,000 14.0 4.5
SST250-65 67.0 1.9 0.7 263 327 154,000 14.0 5.7
SST300-80 81.5 2.1 0.6 285 358 171,000 14.0 6.1
SST450-119 113.4 3.2 0.5 349 459 216,000 14.0 6.5
• These ratings were obtained with a heat source output and
heat source fl ow rate as listed in the chart using the
parameters of the Domestic Cold Water Inlet at 58°F,
Domestic Temperature Rise of 77°F, and a Boiler
Temperature Output of 180°F. Other results will be
obtained under different conditions.