42
The pump speed and consequently the pump rate are
regulated subject to the outside temperature and the
switching times for heating mode or reduced mode.
The minimum and maximum speeds for heating mode
can be matched to the existing heating system at the
control unit.
Speed
in
%
100
+20
-20
Outside temperature in °C
-30
+30
min
Max
Fig. 30
Setting (%) in the heating circuit 1 group:
■
Min. speed: Parameter 1102.0
■
Max. speed: Parameter 1102.1
■
In the delivered condition, the minimum pump rate
and the maximum pump rate are set to the following
values:
Rated heating output
in kW
Speed settings in the
delivered condition in %
Min. pump
rate
Max. pump
rate
11
60
60
19
60
70
25
60
85
32
60
100
■
In conjunction with a low loss header, heating water
buffer cylinder and heating circuits with mixer, the
internal circulation pump runs at a constant speed.
Speed setting (%): Parameter 1100.2 in the Boiler
group
Residual head of integral circulation pump
Residual
head
0 kPa
0
200
400
600
800
1000
Flow rate in l/h
100
200
300
400
0
10
20
30
40
500 50
mbar
1200
100
300
500
700
900
1100
5
50
150 15
250 25
350 35
450 45
M
600
550 55
60
A
B
C
D
700
650 65
70
1300 1400
E
F
G
H
L
K
Fig. 31
M
Operating range upper limit
Commissioning, inspection, maintenance
Adjusting pump rate of integral circulation pump
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