Hydronic piping, Flow rate (gpm), Temperature rise applications – Lochinvar KNIGHT 399 - 800 User Manual
Page 37
Installation & Operation Manual
37
6
Hydronic piping
(continued)
Figure 6-5 Pressure Drop vs. Flow - Models 399 and 500
Table 6B Sizing Information for Temperature Rise Applications_20°F, 25°F, 30°F and 35°F
Figure 6-6 Pressure Drop vs. Flow - Models 600 thru 800
0
2
4
6
8
10
12
14
16
18
20
0
5
10
15
20
25
30
35
40
45
KBN500
KBN399
Pressure Drop vs Flow
(Includes Boiler Secondary Piping)
Flow Rate (GPM)
Pressure Drop (Feet of Head)
0
10
20
30
40
50
60
0
10
20
30
40
50
60
70
80
90
KBN800
KBN700
KBN600
Pressure Drop vs Flow
(Includes Boiler Secondary Piping)
Flow Rate (GPM)
P
ressur
e Dr
op (F
eet of Head)
TEMPERATURE RISE APPLICATIONS
Model
MINIMUM
PIPE
SIZE
20°F
25°F
30°F
35°F
GPM
FT/HD
GPM
FT/HD
GPM
FT/HD
GPM
FT/HD
399
1 1/2"
37
21
30
14
26
11
21
8
500
1 1/2"
46
23
37
16
32
13
26
10
600
2"
55
31
44
22
38
18
32
13
700
2"
65
30
52
20
45
16
37
11
800
2"
74
33
60
23
51
18
42
12