HTP EL-80 - Page 16

LP-293 Rev. 9.24.15
16
Heat Exchanger Pressure Drop
FlowRateinGPMandCorrespondingPressureDropinFeet(ΔP’)
Model 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
EL-80 10’ 14’ 17’ 21’ 26’ * * * * * * * * * * * *
EL-110 * * 15’ 17’ 22’ 25’ 33’ * * * * * * * * * *
EL-150 * * * * 12’ 15’ 17’ 19’ 22’ 27’ * * * * * * *
EL-220 * * * * * * * * * 8’ 10’ 11.5’ 13’ 15’ 16.5’ 17’ 19’
EL-299
EL-301
* * * * * * * * * * * * * * 13’ 14’ 15’
EL-399 * * * * * * * * * * * * * * * * *
Model 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39
EL-80 * * * * * * * * * * * * * * * * *
EL-110 * * * * * * * * * * * * * * * * *
EL-150 * * * * * * * * * * * * * * * * *
EL-220 21’ 23’ 24’ * * * * * * * * * * * * * *
EL-299
EL-301
16.5’ 18’ 20’ 22’ 24’ 26’ 29’ 33’ 36’ * * * * * * * *
EL-399 * * * 12.9’ 13.6’ 14’ 15.7’ 17’ 18’ 19.4’ 21’ 22.5’ 26’ 28’ 31’ 34’ 39’
Table 4 - *Do not operate the boiler at these ow rates. These low or high ow rates will damage the heat exchanger or related
components. Damages due to improper operation ARE NOT covered by warranty.
The chart below represents various system design temperature rise through the boiler along with respective ows and friction
loss. This is provided to aid in circulator selection.
System Temperature Rise Chart
20°Δt 25°Δt 30°Δt
Model Friction Ft Flow Rate (GPM) Friction Ft Flow Rate (GPM) Friction Ft Flow Rate (GPM)
EL-80 17’ 8 10’ 6.6 7’ 5.3
EL-110 25’ 11
17’
9.1
12’
7.3
EL-150 27’ 15 12.5 10
EL-220 19’ 22 13’ 18.3 14.6
EL-299
EL-301
29’ 29 18’ 24.5
13’
20
EL-399 39’ 39 19’ 32.5 26
Table 5 - Temperature Rise, Friction Ft and Flow Rate