Performance Data - Bosch SST150-40 Installation And Operating Manual

8 Performance Data

Indirect Water Heater I=B=R Rating
Potable
Water
Model Volume
Gal.
SST150-40 40.0
SST250-65 67.0
SST300-80 81.5
SST450-119 113.4
• These ratings were obtained with a heat source output and
heat source flow 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.
Indirect Fired Water Heaters Installation and Operating Manual
Heat Continuous
Source Standby
Water Heat Loss
Volume F/hr
Gal.
1.6 0.7
1.9 0.5
2.1 0.5
3.2 0.4
Installation & Operating Manual
First Minimum
Draw Hour Heat Output
Rating Rating Rate from
Gal/hr Gal/hr Heat Source
181 208
263 327
285 358
349 459
Minimum
Heat
Source
Flow Rate
Btu/hr GPM
115,000 14.0
154,000 14.0
171,000 14.0
216,000 14.0
Table 8A
Tank Heat
Source
Friction
Loss Feet
W.C
4.5
5.7
6.1
6.5
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