Maintenance - Viessmann P10 Installation And Service Instructions Manual

Replacing the circulation pump
Pump curves
HE circulation pump with PWM control, types PS 10 and P 10
900 90
800 80
700 70
600 60
500 50
400 40
300 30
200 20
100 10
D
0 0
0 0.5
Pump rate in m³/h
0 0.2
Pump rate in l/s
Fig. 14
Residual head
A
B Maximum output
Pressure drop curve
C
Minimum power
D
HE circulation pump with PWM control, types PS 20 and P 20
800 80
600 60
400 40
200 20
0 0
0
Pump rate in m³/h
0
Pump rate in l/min
Fig. 15
Pressure drop curve
A
Max. delivery head
B
(cont.)
B
A
C
1.0 1.5 2.0 2.5
0.4 0.6
0.5 1.0
8.3 16.7
3.0 3.5 4.0
0.8 1.0
B
A
1.5 2.0
25 33.2

Maintenance

2.5
41.7
17