Pump Selection Chart

KNIGHT XL PUMP RECOMMENDATION TABLE
Temperature Rise Temperature Rise Temperature Rise Temperature Rise
20°F Δ T 25°F Δ T 30°F Δ T 35°F Δ T
Boiler Flow Head Pump Flow Head Pump Flow Head Pump Flow Head Pump
Rate Loss Rate Loss Rate Loss Rate Loss
KBN400 GPM Ft/Hd PUM30001 GPM Ft/Hd PUM30001 GPM Ft/Hd PUM30001 GPM Ft/Hd PUM30001
37.0 21.0 30.0 14.0 26.0 11.0 21.0 8.0
Boiler Flow Head Pump Flow Head Pump Flow Head Pump Flow Head Pump
Rate Loss Rate Loss Rate Loss Rate Loss
KBN501 GPM Ft/Hd PUM30001 GPM Ft/Hd PUM30001 GPM Ft/Hd PUM30001 GPM Ft/Hd PUM30001
46.0 23.0 37.0 16.0 32.0 13.0 26.0 10.0
Boiler Flow Head Pump Flow Head Pump Flow Head Pump Flow Head Pump
Rate Loss Rate Loss Rate Loss Rate Loss
KBN601 GPM Ft/Hd N/A GPM Ft/Hd PUM30001 GPM Ft/H d PUM30001 GPM Ft/Hd PUM30001
55.0 31.0 44.0 22.0 38.0 18.0 32.0 13.0
Boiler Flow Head Pump Flow Head Pump Flow Head Pump Flow Head Pump
Rate Loss Rate Loss Rate Loss Rate Loss
KBN701 GPM Ft/Hd N/A GPM Ft/Hd PUM30001 GPM Ft/H d PUM30001 GPM Ft/Hd PUM30001
65.0 30.0 52.0 20.0 45.0 16.0 37.0 11.0
Boiler Flow Head Pump Flow Head Pump Flow Head Pump Flow Head Pump
Rate Loss Rate Loss Rate Loss Rate Loss
KBN801 GPM Ft/Hd N/A GPM Ft/Hd PUM30001 GPM Ft/H d PUM30001 GPM Ft/Hd PUM30001
74.0 33.0 60.0 23.0 51.0 18.0 42.0 12.0
This chart provides Pump recommendations for Knight XL boilers for the Boiler Loop / Space Heating piping.
Based on specific Temperature Rises, this chart includes calculated Gallon Per Minute flow rate, calculated Foot Head Loss and recommended Pump.
The GPM, Ft/Hd and Pump selection is based on Primary / Secondary Boiler Loop piping of maximum 20 feet of straight pipe, 4 - 90° elbows and 2 - full port ball valves.
See the Installation and Operation manual for more details including pipe diameters and piping diagrams.