Immergas 3.031483 Instruction And Warning Book page 19

Total head available to the system of zone 2 mixed fixed speed - mixing valve open.
80
1
70
60
2
50
3
Y1
40
30
20
10
0
0 200
Key (Fig. 9):
1 = Head available at Speed 3
2 = Head available at Speed 2
3 = Head available at Speed 1
4 = Power absorbed by the circulator pump at Speed 3
5 = Power absorbed by the circulator pump at Speed 2
6 = Power absorbed by the circulator pump at Speed 1
Total head available to the system of zone 2 mixed fixed speed - mixing valve closed.
80
1
70
60
2
50
3
Y1
40
30
20
10
0
0 200
Key (Fig. 10):
1 = Head available at Speed 3
2 = Head available at Speed 2
3 = Head available at Speed 1
4 = Power absorbed by the circulator pump at Speed 3
5 = Power absorbed by the circulator pump at Speed 2
6 = Power absorbed by the circulator pump at Speed 1
400 600 800
400 600 800
4
6
1000 1200 1400
X1
Area between curve 1 and 3 = Head available
Area between curve 4 and 6 = Power absorbed by the circu-
X1 = Flow rate (l/h)
Y1 = Head (kPa)
Y2 = Circulator pump absorbed power (W)
4
6
1000 1200 1400
X1
Area between curve 1 and 3 = Head available
Area between curve 4 and 6 = Power absorbed by the circu-
X1 = Flow rate (l/h)
Y1 = Head (kPa)
Y2 = Circulator pump absorbed power (W)
19
80
70
60
5
50
Y2
40
30
20
10
0
1600 1800 2000
lator pump (dotted area)
80
70
60
5
50
Y2
40
30
20
10
0
1600 1800 2000
lator pump (dotted area)
9
10