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Determine pump CapadtT: <br /> • I. Minimum suggested b 600 gallons per hour(10 gpm)to may ahead of ' <br /> water use ate. <br /> i 2. Maximum suggested for delivery to a drop box of a home system is 2,700 <br /> gallons per hour(49 gpm)to prevent build-up of presstne In drop box. <br /> 3. Use value from design of pressure distribution;ystem. ,�ji� - �• <br /> SRUCI'BD PVMP CAPACITY gpet <br /> B.Determine hand requt mats: R <br /> 1. Elevation difference between and point of discharge. Y <br /> pfest !ltrattes Oltt <br /> 2. If pumping to a pressure dlsu*ution sy:<mt,add live feet for presstu>: <br /> required at manifold <br /> s.Z=feet � !3116 <br /> 3. Friction loss 1.5 Wit LO Inch 3 <br /> a. Enter friction lose table with gpm and pipe diameter. spat MrwlimpW Wa.to <br /> Readkjqdon loss In feet per 100 feet hour page F-18. � 10 0.69 0.20• <br /> F.L• R./100 R of pipe is 0.46 0.21 <br /> b. Determine total pipe length from pump to v •14 1.2t 0.3f <br /> int. Add 25 16 1.63 0.40. <br /> po percent to pipe length for fitting 0 1.243 0.60 <br /> loss,or use a fitting loan chart Equivalent•plps <br /> I length•133 times pipe length• / 23 3.13 1.11 <br /> c� x 1.33.• a•5 feet 3330 <br /> 333 7.0 2.06 <br /> C. Calculate total friction Toss by multiplying 11.07 <br /> friction loss in R/1 0 R by equivalent pipe length. <br /> = Total friction Ives• _�z x a--;Ca.�+100•_=Leet 53 6.16 <br /> 4. Total head required is the sum of elevation diffe mnM 60 3.60 <br /> jspecial head requirements,and total friction loss. ' <br /> I <br /> +=+ /• 7 <br /> u) w (- <br /> TOTAL HBAD �_feet <br /> i . <br /> C. Pump selection <br /> 1. A pump must be selected to deliver at least:20--0- gpm (Step•A)with at least D-7 <br /> L1 7 feet of total head(Step B). trn M ItoNlas Kaes NO aaah <br /> � t,rre a eesrocr <br /> D. Total Pumpout Volume h n to <br /> 1. To maximize pump life select sump size for 4 to S pump opeadons per day. 1 a 3W iw <br /> it <br /> �gpd+4. / G ro dose s *0 . sre .aI <br /> Ig- <br /> I Calculate drainback � � 6 too" i e 33. <br /> 1. Determine total pipe length, S;feet. • Igoe ers as <br /> 2. Determine liquid volume of pipe,17,1 gallons per Y length b3' 100 feet. (see page 1~18) <br /> 3. MultiP I h volume: Dminback quantity• -19 <br /> a <br /> feet x 1*2'l gallons/1100 ft•,�galloro d-WAK atbro <br /> I •Suggested drainback quantity is 10 pereeat of pumped quantity. A larger drainback ' <br /> pereentags will deereasa rwetp Radom efAdemy slightly but pumping"MV Claes at 1.25 �. <br /> usually a relatively small part of the total househoid energy aosb. 1.5 1 C <br /> 3. Total pump out volume equals dose volume+dainbarlc 2 - 1 i <br /> �G gallons per'dose+ _gallons / Total Gallons 2.5 24 <br /> 3 3E <br /> 4 6( <br /> 1 _i 1.t1 ►� !;� ::.w tlh 1 to •+,� a,4 th so, ,_ <br />