Navien NHB Series Installation & Operation Manual page 25
Condensing boilers
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Also See for NHB Series:
- Installation & operation manual (102 pages) ,
- User's information manual (24 pages)
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PQ Curve
Q [GPM]
0.0
H [ft]
0.0
Q [GPM]
0.0
H [ft]
0.0
NFB-301C
NFB-299C
14
12
10
8
6
4
2
0
0
5
10
5.0
11.5
0.7
2.0
NFB-399C
NFB-399C
6
5
4
3
2
1
0
0
5
10
5.0
10.5
0.2
0.5
15
20
Q [GPM]
14.5
17.0
19.0
3.0
4.0
4.5
15
20
25
30
Q [GPM]
15.5
20.0
24.6
1.0
1.5
2.0
25
30
35
22.0
25.0
28.0
6.0
7.8
9.9
35
40
45
27.0
30.0
35.0
2.4
2.8
3.6
Installing the System Piping
30.0
32.5
11.0
12.6
40.0
42.0
4.5
4.8
25
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