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Performance
Data
Table PD-31— Hot Water Heating Capacities (Q/ITD)
1
20, 25, 30 Nominal Tons
Hot Water Water Unit Standard Air Volume (Cfm)
Module Gpm PD (Ft) 4000 6000 8000 10000 12000 14000
Low 10 0.54 1.65 1.99 2.21 2.37 2.48 2.56
High 20 0.91 2.23 2.78 3.16 3.44 3.67 3.85
Low 20 0.91 1.88 2.35 2.69 2.94 3.12 3.27
High 30 1.49 2.36 3.00 3.46 3.81 4.09 4.31
Low 30 1.49 1.97 2.51 2.90 3.19 3.42 3.60
High 40 2.25 2.43 3.12 3.63 4.02 4.34 4.60
Low 40 2.25 2.02 2.60 3.02 3.34 3.60 3.79
High 50 3.2 2.48 3.20 3.74 4.17 4.51 4.80
Low 60 4.31 2.08 2.69 3.16 3.51 3.79 4.02
High 70 5.65 2.54 3.30 3.88 4.35 4.73 5.04
40, 50, 55 Nominal Tons
Hot Water Water Unit Standard Air Volume (Cfm)
Module Gpm PD (Ft) 8000 11000 14000 17000 20000 23000
Low 20 0.70 3.00 3.44 3.75 3.98 4.14 4.29
High 30 1.05 3.85 4.46 4.91 5.26 5.54 5.76
Low 40 1.51 3.40 4.00 4.43 4.76 5.02 5.21
High 50 2.10 4.20 4.95 5.52 5.97 6.34 6.64
Low 60 2.78 3.56 4.23 4.73 5.11 5.40 5.63
High 75 4.04 4.39 5.24 5.89 6.41 6.85 7.21
Low 80 4.50 3.65 4.36 4.89 5.31 5.63 5.88
High 90 5.54 4.46 5.34 6.03 6.58 7.04 7.42
Low 100 6.66 3.71 4.44 5.00 5.43 5.77 6.04
High 125 9.99 4.56 5.50 6.23 6.83 7.33 7.75
60, 70, 75 Nominal Tons
Hot Water Water Unit Standard Air Volume (Cfm)
Module Gpm PD (Ft) 12000 16000 20000 24000 28000 31500
Low 25 0.98 4.28 4.82 5.20 5.48 5.69 5.83
High 30 1.22 5.24 5.91 6.40 6.77 7.06 7.27
Low 50 2.48 4.90 5.63 6.18 6.60 6.92 7.15
High 60 3.33 6.01 6.94 7.66 8.22 8.69 9.03
Low 75 4.83 5.14 5.97 6.60 7.09 7.46 7.73
High 90 6.65 6.32 7.38 8.20 8.87 9.42 9.83
Low 100 8.0 5.28 6.16 6.84 7.36 7.78 8.07
High 120 11.15 6.49 7.62 8.51 9.23 9.84 10.30
Low 125 11.99 5.37 6.29 6.99 7.54 7.98 8.29
High 150 16.8 6.60 7.77 8.71 9.47 10.11 10.60
90, 105, 115, 130 Nominal Tons
Hot Water Water Unit Standard Air Volume (Cfm)
Module Gpm PD (Ft) 27000 30000 33000 36000 39000 42000
Low 30 0.77 6.68 6.87 7.04 7.18 7.30 7.41
High 40 1.02 8.51 8.80 9.04 9.26 9.45 9.62
Low 60 1.69 8.07 8.38 8.64 8.87 9.07 9.25
High 80 2.6 10.21 10.64 11.03 11.38 11.69 11.98
Low 100 3.71 8.82 9.19 9.52 9.80 10.05 10.26
High 120 5.07 10.95 11.46 11.92 12.33 12.71 13.05
Low 140 6.59 9.19 9.60 9.96 10.27 10.55 10.79
High 160 8.37 11.37 11.93 12.43 12.88 13.30 13.67
Low 175 9.8 9.39 9.82 10.20 10.53 10.82 11.07
High 200 12.52 11.64 12.23 12.76 13.24 13.68 14.08
Note:
1. Capacities expressed as MBh per initial temperature difference (ITD) between the entering air temperature to
the hot water coil and the entering water temperature. Ethylene glycol or other capacities can be determined
from the Trane heating coil computer program. Capacity and pressure drop of ethylene glycol varies greatly
with temperature and concentration.