10
Vitotrans 222 (up to 80 kW and up to 120 kW) - circulation pump, heating water side
A
B
A
Variable differential pressure
B
Constant speed I, II, III
1
3
6
80 kW setting
1
3
6
120 kW setting
Vitotrans 222 up to 80 kW and up to 120 kW
3.5
10
20
30
40
50
60
70
100
200
300
400
500
600
700
0
mbar
kPa 0
0
Flow rate in m³/h
Pressure drop/head
3.0
2.5
2.0
1.5
1.0
0.5
E
C
D
F
G
B
A
Fig.5
A
Pressure drop Vitotrans 222, up to 80 kW
B
Pressure drop Vitotrans 222, up to 120 kW
C
Residual head
D
Min. output
E
Max. output
F
Heating water volume at T
F
/T
R
= 75/35 °C and
max. transferable heating output up to
80 kW = 1720 l/h,
Δ
p = 70 mbar (7 kPa)
G
Heating water volume at T
F
/T
R
= 75/35 °C and
max. transferable heating output up to
120 kW = 2580 l/h,
Δ
p = 130 mbar (13 kPa)
Note
The pump output can be variably restricted: From min.
output via I and II up to III (
≙
max. output).
Commissioning, inspection, maintenance
Setting the pumps
(cont.)
5549 892 GB
