Viessmann Vitodens 200-W B2HE Installation And Service Instructions Manual page 45

Adjusting the pump rate of the integral...
100
min
+30 +20
Outside temperature in °C
Fig. 35
Setting (%) in Heating circuit 1 group:
Min. speed: Parameter 1102.0
■
Max. speed: Parameter 1102.1
■
Residual head of integral circulation pump
Gas condensing system boiler up to 32 kW and gas condensing combi boiler up to 25 kW
500 50
450 45
L
400 40
K
350 35
H
300 30
250 25
G
200 20
F
150 15
E
100 10
D
50
5
C
B
A
0 0
0 100 200
Flow rate in l/h
Fig. 36
Upper operational limit
M
Max
-20 -30
300 400 500 600 700
Commissioning, inspection, maintenance
(cont.)
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
Continuous operation
–
Speed setting (%): Parameter 1100.2 in the Boiler
group
M
800 900 1000 1100 1200
Speed settings in the
delivered condition in %
Min. pump Max. pump
rate rate
50 65
50 85
50 95
50 100
45