10
6
V3
V3
V2
V2
V2
V1
A3
A3
V3
A2
A2
A3
A2
A1
INS
TALLER
US
ER
MAINTEN
AN
CE
TECHNI
CI
AN
TECHNI
CAL
D
AT
A
Head available to the system.
Key:
Vn = Available head
An = Circulating pump absorbed power
Ci
rcu
la
to
r p
um
p a
bs
or
be
d p
ow
er (
W
)
Ci
rcu
la
to
r p
um
p a
bs
or
be
d p
ow
er (
W
)
Ci
rcu
la
to
r p
um
p a
bs
or
be
d p
ow
er (
W
)
Flow rate (l/h)
Flow rate (l/h)
Flow rate (l/h)
H
ea
d (kP
a)
H
ea
d (kP
a)
H
ea
d (kP
a)
Proportional pressure curve.
Constant pressure curve
Constant curve
