22
B
A
C
D
Vel. 9
Vel. 9
Vel. 6
33
INSTALLERUSERMAINTENANCE TECHNICIAN
Total head available to the system.
Head (kPa)
A+B = Head available with by-pass closed
B = Head available with by-pass open
C+D = Power absorbed by the pump with by-pass open (dotted area)
D = Power absorbed by the pump with by-pass closed (dotted area)
Circulator pump absorbed power (W)
Flow rate (l/h)
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