Viessmann VITOSOL SERIES Technical Manual page 71

DHW cylinders
(cont.)
Pressure drop
1000
800
600
500
400
300
200
100
80
60
50
40
30
20
10
8
6
5
4
3
Heating water throughput in l/h
Pressure drop on the heating water side
A Cylinder capacity 500 l (lower indirect coil)
B Cylinder capacity 300 l (lower indirect coil)
C Cylinder capacity 300 and 500 l (upper indirect coil)
VITOSOL
100
A
80
B
60
C
50
40
30
20
10
8
6
5
4
3
2
1
DHW throughput in l/h
Pressure drop on the DHW side
10
VIESMANN
71