Xylem HV 1.1 - 1.2 - Manual (Page 7)

7
2 System Design
The following diagrams show typical single pump and multi-pump systems using the
Hydrovar control unit. Connection can be made directly to a water supply or water
can be drawn from a break tank or well. In the case of break tanks and wells, level
switches, should be used to shut down the pumps when water is low. In the direct
connection, a pressure switch on the suction side should be used.
Single pump layout
Multiple pump Layout
(1) pump with drive head
(2) diaphragm tank
(3) distribution panel
(4) gate valves
(5) non return valves
(8) incoming pressure switch
(9) pressure gauges
(14) pressure transmitter