Installation and Operation Manual

66 Rinnai Tankless Water Heater Installation and Operation Manual
7.4 Pressure Drop and Water Flow Curves
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Figure 49: Pressure Drop Curve
Figure 50: Water Flow Curve
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°F)
0
20
40
60
80
100
120
140
160
0
5
10
15
20
25
30
35
40
45
50
55
60
0 1 2 3 4 5 6 7 8 9 10 11
Pressure Loss (ft of Head)
Pressure Loss (PSI)
Water Flow (GPM)
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0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
0 25 50 75 100 125 150
Water Flow (gpm)
Delta T - Temperature Rise (°F)
VEP199 VEP160
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