Xylem HV 1.1 - 1.2 - Manual (Page 8)

8
3 Pressure tank
A diaphragm pressure tank is used on the discharge side of the pump or pumps to
maintain pressure in the line when there is no demand. This will keep the pumps from
continuing to run. With the Hydrovar control unit, it is not necessary to have a large tank
for supply purposes. In selecting a tank, make sure it can withstand systems pressure. The
tank should have a capacity of more than 10% of the maximum system flow rate l/min of
one pump.
Ask of required certificates needed for your country!
Precharge the tank to the following:
Before checking the precharge pressure, take care, that the tank, is
pressureless (no water inside).
Solldruck / required pressure [bar]