66
Rinnai Tankless Water Heater Installation and Operation Manual
7.4 Pressure Drop and Water Flow Curves
Pressure Loss (PSI)
Water Flow (GPM)
Presure Loss (ft of Head)
Figure 96: Pressure Drop Curve
Figure 97: Water Flow Curve
W
ater Flow (GPM)
Delta T - Temperature Rise (
°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
Pr
essu
re L
oss
(ft
o
f H
ea
d)
Pr
essu
re L
oss
(P
SI
)
Water Flow (GPM)
REP160 REP199
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
W
at
er Flo
w
(g
pm)
Delta T - Temperature Rise (°F)
VEP199 VEP160
REP160
REP199
