Navien NHB-055 Installation & Operation Manual page 21

PQ Curves
NHB-055/080
NHB-150
Temperature Rise Conditions
Model
Flow Rate (GPM)
NHB-055 5.1
NHB-080 7.4
NHB-110 10.2
NHB-150 13.8
Q[GPM]
Q[GPM]
20°F ΔT
Head (Ft)
7.4
15.2
11.3
20.7
NHB-110
30°F ΔT
Flow Rate (GPM) Head (Ft)
3.4 3.5
4.9 6.9
6.8 5.0
9.2 9.2
Q[GPM]
40°F ΔT
Flow Rate (GPM) Head (Ft)
2.6 2.1
3.7 4.1
5.1 2.8
6.9 5.2
Installing the System Piping 21