ThermaPak Hydronic Coil Heating Capacity (MBH)

AC-WPAK-60

GPM Entering Water Temperature (°F)
120 140 160 180 200
2 20.5 30.0 39.1 48.1 57.2
4 25.2 35.6 46.1 56.6 67.1
6 26.6 37.4 48.3 59.2 70.2
8 27.2 38.2 49.2 60.4 71.6
10 27.5 38.7 49.3 61.1 72.3

At 550CFM and 70°F Entering Air Temperature

AC-WPAK-90

GPM Entering Water Temperature (°F)
120 140 160 180 200
2 26.8 39.2 51.6 63.4 75.2
4 36.0 50.8 65.7 80.8 95.8
6 39.0 54.9 70.9 87.0 103.1
8 40.4 56.8 73.3 89.9 106.5
10 41.2 57.9 74.7 91.5 108.4

At 850CFM and 70°F Entering Air Temperature

AC-WPAK-120

GPM Entering Water Temperature (°F)
120 140 160 180 200
2 31.7 46.2 61.2 75.1 89.0
4 45.6 64.2 83.0 102.0 120.9
6 50.6 71.2 92.0 112.9 133.8
8 53.1 74.7 96.4 118.2 140.1
10 54.6 76.7 98.9 121.2 143.6

At 1150CFM and 70°F Entering Air Temperature

Water Pressure Drop (in feet @ 180°)

GPM AC-WPAK-60 AC-WPAK-90 AC-WPAK-120
2 0.4 0.4 0.5
4 1.4 1.6 1.7
6 3.0 3.3 3.7
8 5.2 5.7 6.3
10 7.9 8.7 9.6

To calculate Leaving Air Temperature (LAT) use the following formula:
LAT = (BTUH / (1.08 X CFM)) + 70

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