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Performance Data—Heat
Table 30 Hot Water Coil Heating Capacities (Q/ITD)
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| Flow |
| High Capacity |
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| (GPM) | 40 | 80 | 120 | 160 | 200 | 30 | 60 | 100 | 140 | 175 |
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Casing | (CFM) | (ft.) | 0.3 | 1.0 | 2.1 | 3.7 | 5.6 | 0.2 | 0.6 | 1.5 | 2.8 | 4.3 |
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A, B, C | 16000 |
| 7.57 | 9.02 | 9.59 | 9.90 | 10.10 | 5.50 | 6.54 | 7.05 | 7.29 | 7.42 |
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| 20000 |
| 8.26 | 10.08 | 10.84 | 11.25 | 11.52 | 6.02 | 7.34 | 8.01 | 8.33 | 8.50 |
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| 23000 |
| 8.67 | 10.75 | 11.64 | 12.13 | 12.44 | 6.34 | 7.85 | 8.63 | 9.01 | 9.21 |
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| 28000 |
| 9.21 | 11.69 | 12.78 | 13.39 | 13.79 | 6.77 | 8.56 | 9.52 | 9.99 | 10.25 |
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| 33000 |
| 9.65 | 12.46 | 13.74 | 14.47 | 14.94 | 7.11 | 9.15 | 10.28 | 10.84 | 11.14 |
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| 38000 |
| 10.00 | 13.11 | 14.56 | 15.40 | 15.94 | 7.38 | 9.65 | 10.93 | 11.58 | 11.93 |
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| 43000 |
| 10.29 | 13.67 | 15.28 | 16.21 | 16.83 | 7.61 | 10.08 | 11.50 | 12.22 | 12.62 |
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| 45000 |
| 10.39 | 13.87 | 15.54 | 16.51 | 17.15 | 7.69 | 10.23 | 11.71 | 12.46 | 12.88 |
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Notes:
1.Capacities are expressed as MBH (Q) per degree (F) of initial temperature difference (ITD) between the entering steam temperature (F) and the entering (return) air temperature (F) to the coil.
2.WPD is waterside pressure drop in feet of water
3.Hot water capacity is at 180°F entering water temperature and 65°F entering air temperature
4.Maximum entering water temperature is 200°F.
5.Capacities do not include fan heat.
Table 31 Steam Coil Heating Capacities (Q/ITD)
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| High | Low |
Casing | Airflow(CFM) | Cap | Cap |
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A, B, C | 16000 | 7.33 | 4.99 |
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| 20000 | 8.17 | 5.67 |
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| 23000 | 8.73 | 6.10 |
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| 28000 | 9.55 | 6.71 |
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| 33000 | 10.27 | 7.20 |
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| 38000 | 10.92 | 7.61 |
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| 43000 | 11.52 | 7.95 |
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| 45000 | 11.74 | 8.07 |
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Notes:
1.Capacities are expressed as MBH (Q) per degree (F) of initial temperature difference (ITD) between the entering steam temperature (F) and the entering (return) air temperature (F) to the coil.
2.Steam coil capacity is at 15 psig and 65°F entering air temperature.
3.Capacities are expressed as MBH (Q) per degree (F) of initial temperature difference (ITD) between the entering steam temperature (F) and the entering (return) air temperature (F) to the coil.
4.The maximum recommended steam pressure is 35 psig.
5.Capacities do not include fan heat.
Table 32 Properties of Steam
Steam Pressure (psig) | 2 | 5 | 10 | 15 | 20 | 25 | 30 | 40 | 50 |
Temperature of Steam (F) | 219 | 227 | 239 | 250 | 259 | 267 | 274 | 287 | 298 |
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