Viessmann VITOGAS - Page 39

Manually controlled heating circuit pumps
Wilo VIRS 25/4-3
min.1
Max. head 3
40
0
10
20
30
0
100
200
300
400
0 0.5 1.0 1.5 2.0 2.5
Pump rate in m³/h
Pressure drop/head mbar kPa
50500
2
A
B
C
D
A
Divicon R ¾ with mixer
B
Divicon R 1 with mixer
C
Divicon R 1¼ with mixer
D
Divicon R ¾, R 1 and R 1¼ without mixer
Wilo VIRS 25/6-3
Head min.1
Head max.3
40
0
10
20
30
0
100
200
300
400
0 0.5 1.0 1.5 2.0 2.5
Pump rate in m³/h
Pressure drop/head mbar kPa
50
500
60
600
2
A
B
C
D
A
Divicon R ¾ with mixer
B
Divicon R 1 with mixer
C
Divicon R 1¼ with mixer
D
Divicon R ¾, R 1 and R 1¼ without mixer
Grundfos VIUPS 25-40
Head min.
Head max.
A
B
C
D
0
10
20
30
0
100
200
300
40400
0 0.5 1.0 1.5 2.0 2.5
Pump rate in m³/h
Pressure drop/head mbar kPa
A
Divicon R ¾ with mixer
B
Divicon R 1 with mixer
C
Divicon R 1¼ with mixer
D
Divicon R ¾, R 1 and R 1¼ without mixer
Grundfos VIUPS 25-60
Max. head
Min. head
60600
40
0
10
20
30
0
100
200
300
400
0 0.5 1.0 1.5 2.0 2.5
Pump rate in m³/h
Pressure drop/head mbar kPa
50500
A
B
C
D
A
Divicon R ¾ with mixer
B
Divicon R 1 with mixer
C
Divicon R 1¼ with mixer
D
Divicon R ¾, R 1 and R 1¼ without mixer
Installation accessories
(cont.)
VITOGAS
VIESMANN
39
5822 428 GB
4