22
8
0
200
400
600
800
1000
1200
1400
1600
1800
2000
2200
2400
2600
0
20
40
60
80
2800
3000
10
30
50
70
0
10
0
20
40
60
80
10
30
50
70
10
A
X1
Y1
Y2
MIN
MIN
MAX
MAX
B
9
0
200
400
600
800
1000
1200
1400
1600
1800
2000
2200
2400
2600
0
20
40
60
80
2800
3000
10
30
50
70
0
10
0
20
40
60
80
10
30
50
70
10
A
X1
Y1
Y2
MIN
MIN
MAX
MAX
B
Total head available to the system of zone 1 direct constant head.
Total head available to the system of zone 2 mixed fixed speed - mixing valve open.
Key:
A = Total head available to the system
B = Power absorbed by the system pump (dotted area)
Key:
A = Total head available to the system
B = Power absorbed by the system pump (dotted area)
Ci
rcu
la
to
r p
um
p a
bs
or
be
d p
ow
er
(W
)
Flow rate (l/h)
H
ea
d (kP
a)
Flow rate (l/h)
H
ea
d (kP
a)
Ci
rcu
la
to
r p
um
p a
bs
or
be
d p
ow
er
(W
)
