Viessmann VITOTRANS 222 - Page 9

9
A
Vitotrans 222 pressure drop
B
Residual head
C
Min. output
D
Max. output
E
DHW volume at 10/60 °C and max. transferable
heating output up to 80 kW = 1376 l/h,
Δp = 50 mbar (5 kPa)
F
DHW volume at 10/60 °C and max. transferable
heating output up to 120 kW = 2064 l/h,
Δp = 150 mbar (15 kPa)
Note
The pump output can be variably restricted: From min.
output via I and II up to III (
≙
max. output).
Vitotrans 222 (up to 240 kW) - circulation pump, DHW side
2
5
8
1
4
8
A
Variable differential pressure
B
Constant differential pressure
2
5
8
1
4
8
240 kW setting
Vitotrans 222, up to 240 kW
E
A
D
3.0 6.0 9.0
10
20
30
40
50
60
70
80
90
100
100
200
300
400
500
600
700
800
900
1000
0
mbar kPa
0
0
Flow rate in m³/h
Pressure drop/head
1.0 2.0 4.0 5.0 7.0 8.0
B
C
Fig.4
A
Vitotrans 222 pressure drop
B
Residual head
C
Min. output
D
Max. output
E
DHW volume at 10/60 °C and max. transferable
heating output up to 240 kW = 4128 l/h,
Δp = 90 mbar (9 kPa)
Commissioning, inspection, maintenance
Setting the pumps (cont.)
5549 892 GB