Viessmann VITODENS 200-W Type B2HA Technical Manual page 19

Vitodens 200-W
(cont.)
Residual head of the circulation pump
1200 120
1100 110
1000 100
900 90
800 80
700 70
600 60
500 50
400 40
300 30
200 20
100 10
0 0
0
Flow rate in l/h
Curve Pump rate, circulation pump
A
B
C
D
E
F
G
Adjust the functioning of the circulation pump during commissioning
Hydraulic connection/connection requirements
Single boiler system with:
– Heating circuit without mixer
– Connection without low loss header and without heating
water buffer cylinder
– Circulation pump VI PARA 25/1-12
Single boiler system with connection of the heating circuits
to the heating water buffer cylinder
Circulation pump VI PARA 25/1-12
Multi boiler system
Circulation pump VI PARA 25/1-11
Multi stage circulation pump (on site)
VITODENS 200-W
G
F
E
D
C
B
A
1000 2000
40 %
50 %
60 %
70 %
80 %
90 %
100 %
Control unit setting
Coding address/group
– Max. pump speed:
E6: ... /heating circuit
– Min. pump speed:
E7: ... /heating circuit
30:0/boiler/2
30:0/boiler/2
30:0/boiler/2
3000 4000
Circulation pump setting
Ext. In
Recommended for Δt = 15 K
– 80 kW:
– 99 kW:
Recommended for Δt = 20 K
– 80 kW:
– 99 kW:
5000 6000
Ext. In
2 2
6 6
12 12
Ext. In
2 2
6 6
12 12
= 6 ≙ 4.59 m
3 /h
= 10 ≙ 5.70 m
3 /h
Ext. In
2 2
6 6
12 12
= 4 ≙ 3.43 m
3 /h
= 6 ≙ 4.25 m
3
/h
VIESMANN
1
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