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Commissioning, inspection, maintenance
Adjusting pump rate of integral circulation pump
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.
100
min
+30
+20
Outside temperature in °C
Fig. 30
Residual head of integral circulation pump
700
70
L
650 65
600
60
K
550 55
500 50
450 45
H
400
40
350 35
G
300
30
250 25
F
200
20
E
150 15
D
100
10
50
5
C
B
A
0
0
0
100
200
Flow rate in l/h
Fig. 31
Operating range upper limit
M
42
Max
-20
-30
300
400
500
600
700
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
11
19
25
32
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
800
900
1000
1100
1200
Speed settings in the
delivered condition in %
Min. pump
Max. pump
rate
rate
60
60
60
60
M
1300 1400
60
70
85
100
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