Navien NHB-055 Installation & Operation Manual page 21

PQ Curves
NHB-055/080
20
18
16
14
12
10
8
6
4
2
0
0 1 2 3
NHB-150
28
26
24
22
20
18
16
14
12
10
8
6
4
2
0
0 2 4 6
4 5 6 7
Q[GPM]
8 10 12 14
Q[GPM]
NHB-110
20
18
16
14
12
10
8
6
4
2
0
8 0 2
16
4 6 8
Q[GPM]
Installing the System Piping
10 12
21