Viessmann Vitodens 100-W B1HF Series Installation And Service Instructions Manual page 43

Adjusting pump rate of integral circulation pump
100
Min
+30 +20
Outside temperature in °C
Fig. 27
Setting (%) in system configuration. See page 56.
Residual head of integral circulation pump
600 60
L
550 55
K
500 50
450 45
H
400 40
350 35
G
300 30
250 25
F
200 20
E
150 15
D
100 10
50 C
5
B
A
0 0
0 100 200
Flow rate in l/h
Fig. 28
Upper operational limit
M
Max
-20 -30
300 400 500 600 700
Commissioning, inspection, maintenance
In the delivered condition, the minimum pump rate
■
and the maximum pump rate are set to the following
values:
Rated heating output
in kW
11
19
25
32
■ In the following system conditions, the internal circu-
lation pump is operated at a constant speed:
– Low loss header or heating water buffer cylinder
and heating circuits with mixer
Constant operation
–
800 900 1000 1100 1200
(cont.)
Speed settings in the de-
livered condition in %
Min. pump Max. pump
rate rate
40
40
40
40
M
1300 1400
60
65
75
100
43