Viessmann VITOLIGNO 200-S Technical Manual page 65

Installation accessories
Design information
The use of differential pressure-dependent heating circuit pumps
requires heating circuits with variable pump rates. These include, for
example, single and twin line heating systems with thermostatic valves
and underfloor heating systems with thermostatic or zone valves.
Wilo Yonos Para 25/6
■ Very economical HE pump (compliant with Energy Label A)
Operating mode: Constant differential pressure
700 70
600 60
500
50
400
40
300
30
200 20
100 B
10
A
0 0
0.5 1.0 1.5 2.0 2.5
0
Flow rate in m³/h
A Divicon R ¾ with mixer
B Divicon R 1 with mixer
C Divicon R ¾ and R 1 without mixer
Operating mode: Variable differential pressure
700 70
600 60
500
50
400
40
300
30
200 20
100 10
B
A
0 0
0.5 1.0 1.5 2.0 2.5
0
Flow rate in m³/h
A Divicon R ¾ with mixer
B Divicon R 1 with mixer
C Divicon R ¾ and R 1 without mixer
VITOLIGNO 200-S
(cont.)
C
3.0 3.5
C
3.0 3.5
Wilo Stratos Para 25/1-7
■ Very economical HE pump (compliant with Energy Label A)
Operating mode: Constant differential pressure
700 70
600 60
500
50
400 40
300
30
200 20
100 10
A
0 0
0.5 1.0 1.5 2.0 2.5
0
Flow rate in m³/h
A Divicon R 1¼ with mixer
B Divicon R 1¼ without mixer
Operating mode: Variable differential pressure
700 70
600 60
500
50
400
40
300
30
200 20
100 10
0 0
0.5 1.0 1.5 2.0 2.5
0
Flow rate in m³/h
A Divicon R 1¼ with mixer
B Divicon R 1¼ without mixer
Grundfos Alpha 2-60
■ Very economical HE pump (compliant with Energy Label A)
■ With power consumption display
■ With Autoadapt function (automatic matching to the pipework)
■ With night setback function
B
3.0 3.5 4.0
A
B
3.0 3.5 4.0
VIESMANN
65
5