Lochinvar KNIGHT XL 801 - Manual (Page 40)

40
Figure 6-5 Pressure Drop vs. Flow - Models 400 and 501
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 601 thru 801
0
2
4
6
8
10
12
14
16
18
20
0 5 10 15 20 25 30 35 40 45
KBN501
KBN400
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
KBN801
KBN701
KBN601
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
400 1 1/2" 37 21 30 14 26 11 21 8
501 1 1/2" 46 23 37 16 32 13 26 10
601 2" 55 31 44 22 38 18 32 13
701 2" 65 30 52 20 45 16 37 11
801 2" 74 33 60 23 51 18 42 12
6
Hydronic piping
Installation & Operation Manual