Vitodens 200-W, 125 And 150 Kw - Viessmann VITODENS 200-W Technical Manual

Vitodens 200-W
Residual head of the circulation pump
120 1200
1
110 1100
100 1000
90 900
80 800
70 700
60 600
50 500
40 400
30 300
20 200
10 100
0 0
0
Flow rate in l/h
Curve Circulation pump rate
A
B
C
D
E
F
G
Note
Observe further details regarding the use of a low loss header (see
page 45).
If the residual head of the circulation pump available as an accessory
is insufficient to overcome the following system pressure drop values,
install an additional, external circulation pump on site.
In such cases, use a low loss header.
Pressure drop on the heating water side
For sizing a circulation pump on site (when connecting to a DHW cyl-
inder connection set)
60 600
50 500
40 400
30 300
20
200
10 100
0 0
0
Flow rate in l/h

Vitodens 200-W, 125 and 150 kW

Multi boiler systems
For further details regarding multi boiler systems, see page 32.
VIESMANN
10
(cont.)
G
F
E
D
C
B
A
1000 2000
1000 2000 3000 4000
3000
40 %
50 %
60 %
70 %
80 %
90 %
100 %
5000 6000 7000
4000 5000
VITODENS 200-W
6000