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J ' • • , <br /> a Debermin�pnmp eipade� � <br /> l. Minimum suggested�600 gaUons pet hour(10 gpm)co stay ahmd oE • <br /> water use rete. <br /> 2. Maximum su6gested for ddivery b�a drpp box oE a home rystem is Z,700 <br /> gallvns pet hosa t4s gp��'bo prevent build-up oE pre�atu+e in drop bmc. <br /> 3. Use value from design of pressure di�tribudon 'rystan. <br /> � SELECrED PU11�CAPACTI'Y �• Epm p��� <br /> B.Detsrattae h�ad reqniremeutu , � , P�c ot D� <br /> 1. IIevado�di�ere�oe betrveen pump and point oE dischaarge. J�� <br /> �_� � <br /> 2. IE P�P�6�o s prn�ure distnbutlon syseem,add!!ve feet for pcessure �'� <br /> r+equired at aw�ifold , <br /> _�� R�a� <br /> 3. Frtetion bss ., � i��.:M6�.cr3'�G.ind' <br /> a. Enev fiictbn loss tabk with gpQt ud pipe diianeber. <br /> Resd Erlcdon loas in feet per 100 Eeet from pege F-18. l0 0.69 0.20• <br /> F.L���fL/100 ft oE pipe �2 ���.96 o.2a <br /> : b. Deeermine eotai pipe length E:om pnmp b dischirge - ' i6 1.63 0ia <br /> potn� Add 2S pescent to pipe length for Stdng 13 203 0.60 <br /> loss.or u�e a R toss chart. vale�t ?A 247 0.73 0.11 <br /> � � �� 23 3.73 1.11 0.16 <br /> length•1.25 dtt+es pipe ld�gth• 30 3.?3 1.53 0.23 <br /> •1��x 1.25 s���{� 33 7.90 206 0.30 <br /> c. Calc.vlate tofal frictlon loss multi 1 ` �10 11.07 Z64 0.39 <br /> bY P Y�8 <br /> fridion laes in h/100 R bq eqsiivalent pipe lrngth 30 � 3.94 03 <br /> Total friction lo�s• �r,x a.��.r_+100=,�feet S3 • 4.76 0.70 <br /> 4. Total hmd r�equired is tltie suat of drvadon difference, • • � 3.6o O.a2 �. <br /> special head requiremenb.and total hictian losd. . ' ' <br /> ___+_�_+-y- . <br /> � (1) (2) (3v <br /> TOTAL HEAD �feet . <br /> C. Pump selection <br /> D-7 <br /> 1. A pump must be sdected to ddiver at least�gpm (Step A)with at least <br /> 1�_feet oE total head GStep B). ar,w•� uwrot ►�ows n�e.LLoN, .or o.v <br /> w�lJl T1�K OR 11(SIO[NC[ <br /> 0[01100M! t II � CC <br /> D. Total Puanpont Volume ' _ ,� � �� �� <br /> 1. To maxtmize pump li#e select�ump stu for 4 to 5 pump operadons pa day. . ; � � _� „�;,,� <br /> ,��gpd+4• i so gallons per dose � ,�o •eo �. '::. <br /> 2. Calculate drainbadc `r ia'eo° - w'�'o ;;v' � <br /> 1. Deterrnine total pipe length.l,3,(Z feet. • '=O0 •" 'a � <br /> 2. Deternsine liquid wlume of pipe,J,(�.gallons per 100 feet. (see page F-18) F•18a � <br /> 3. Muitiply tength by wtuma Drain�acfc quantity= �,n� nehe.� c.uom too rea <br /> y��feet x,.(,�,gallans/100 EL�..��,8allcn�. <br /> •Sugga�t�d drainback quaatity is 10 pazert of pumped qvantity. A hrger drainbadc �1.25 7 77 <br /> p e r c a na g e will decrease p u m p station eff�den e y sii ghtl y but p u m p in g en e r g y cosb are <br /> usually a relatively'smaU part of the total �usehoid energy aosb. 1.5 1�.58 <br /> 2 , .17.43 <br /> 3. Total pump out volume equals dose volume+drainbacfc 2,� 24.g� <br /> .,,(,�Q_gaUons per dox+ a,�_galions• 1 �3 Total Callons 3 3 8.4 <br /> 4 66.1 • <br />