Installation & Operation Manual
8 Performance data
Table 8A IBR Chart
Squire Indirect Water Heater
I=B=R Rating
Indirect | Potable | Heat |
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| Minimum Heat | Minimum | Tank Heat | |
Water | Water | Source | Standby | Continuous | First Hour | Output Rate | Heat Source | Source | |
Heater | Volume | Water | Heat Loss | Draw Rating | Rating Gal/ | from | Flow Rate | Friction | |
Model | Volume | F/hr | Gal/hr | hr | Heat Source | Loss Feet | |||
Gal. | GPM | ||||||||
Number | Gal. |
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| Btu/hr | W.C. | |||
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SIT030 | 27.0 | 1.1 | 1.5 | 160 | 183 | 99,000 | 14.0 | 3.9 | |
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SIT040 | 40.0 | 1.6 | 0.9 | 181 | 208 | 115,000 | 14.0 | 4.5 | |
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SIT050 | 51.6 | 1.7 | 0.8 | 209 | 255 | 133,000 | 14.0 | 5.3 | |
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SIT065 | 67.0 | 1.9 | 0.7 | 263 | 327 | 154,000 | 14.0 | 5.7 | |
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SIT080 | 81.5 | 2.1 | 0.6 | 266 | 347 | 160,000 | 14.0 | 5.7 | |
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SIT119 | 113.4 | 3.2 | 0.5 | 349 | 459 | 216,000 | 14.0 | 6.5 | |
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•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.
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