Viessmann Vitodens 200 Technical Manual page 84

3.1 Water interconnections
300
Variable speed heating circuit pump
The pump speed and consequently the
pump capacity is relayed to the pump and
adjusted by the control unit subject to
outside temperature and switching times
for central heating or reduced mode via
an internal data BUS.
Vitodens 300, 4.2 kW to 13.0 kW
Circulation pump VIRLE 50 KM BUS
Rated voltage V ~
Rated current A max.
A min.
Power W max.
consumption W min.
W in the delivered condition
Residual head of the integral circulation pump
450
40 400
3
350
30 300
K
250
20 200
150
10 100
50
0 0
0 100
Flow rate in l/h
K Operating range
Curve Capacity
Circulation
pump
A 30 %
B 40 %
C 50 %
D 60 %
E 70 %
F 80 %
G 90 %
H 100 %
84
Individually match the minimum and
maximum speed plus the speed during
reduced mode to the existing heating
system using the control unit codes.
In the delivered condition, the minimum
pump capacity (coding address "E 7") is
set to 30 % and the maximum pump
capacity (coding address "E 6") to 50 % for
26 kW or to 70 % for 35 kW.
230
0.35
0.16
79
35
52
200 300 400 500
For an example of the adjustment of the
Setting
max. pump capacity, see page 85.
Coding
address "E 6"
E 6:030
E 6:040
E 6:050
E 6:060
E 6:070
E 6:080
E 6:090
E 6:100
A
600 700 800 900
The diagram enables the adjustment of
the pump capacity in line with the
respective system conditions.
Matching the capacity of the circulation
pump to the individual system conditions
reduces the power consumption of the
heating system.
G
E
H
B C
F
D
1000 1100 1200 1300
VITODENS
1400