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OSTP Pump Tank Sizing, Dosing and Float <br /> UNIVERSI <br /> and Timer SettingDesign Worksheet OF MINNESOTA <br /> 1TIMER or DEMAND FLOAT SETTINGS <br /> Select Timer or Demand Dosing: 0 Timer QQ Demand Dose <br /> A. Timer Settings <br /> 11. Required Flow Rate: <br /> A. From Design(Line 12 of Pressure Distribution or Line 10 of Non-Level'): GPM Note: This value must be <br /> adjusted after field <br /> B. Or calculated:GPM=Change in Depth(in)x Gallons Per Inch/Time Interval in Minutes <br /> measurement& <br /> in X gal/in: min= GPM calculation. <br /> 12. Flow Rate from Line 11.A or 11.B above. GPM <br /> 13.Calculate TIMER ON setting: <br /> Total Dosing Volume/GPM <br /> gal+ gpm= Minutes ON <br /> 14.Calculate TIMER OFF setting: <br /> Minutes Per Day(1440)/Doses Per Day- Minutes On <br /> 1440 min - doses/day - min = Minutes OFF <br /> 15. Pump Off Float-Measuring from bottom of tank: <br /> Distance to set Pump Off Float=Gallons to Cover Pump /Gallons Per Inch: <br /> gal+ gal/in= Inches <br /> 16. Alarm Float-Measuring from bottom of tank: <br /> Distance to set Alarm Float=Tank Depth(4A)X 90%of Tank Depth <br /> in X 0.90= in <br /> B. DEMAND DOSE FLOAT SETTINGS <br /> 17. Calculate Float Separation Distance using Dosing Volume. <br /> Total Dosing Volume/Gallons Per Inch <br /> 204 gal_ 25.5 gal/in= 8.0 Inches <br /> 18. Measuring from bottom of tank: <br /> A. Distance to set Pump Off Float=Pump and block height+2 inches <br /> 16 in+ 2 in = 18 Inches <br /> B. Distance to set Pump On Float=Distance to Set Pump-Off Float +Float Separation Distance <br /> 18 in+ 8.0 in = 26 Inches <br /> C. Distance to set Alarm Float=Distance to set Pump-On Float +Alarm Depth (2-3 inches) <br /> 26 in+ 2.0 in= 28 Inches <br /> FLOAT SETTINGS <br /> DEMAND DOSING TIMED DOSING <br /> Alarm Depth 28 in Alarm Depth in <br /> Pump On 26 in 51 Gal . <br /> Pump Off 18 in 204 Gal Pump Off in <br /> 458.82 Gal <br /> I—I I—I <br />