Viessmann VITODENS 200-W Type B2HA Technical Manual page 24

Vitodens 200-W
When balancing the low loss header, adjust the flow rate on the
boiler side (V primary A) to approx. 10 to 30 % below the flow rate
on the system side (V secondary B) (reducing the return tempera-
ture).
1
The low loss header separates the heat generator circuit (boiler cir-
cuit) from the subsequent heating circuits.
100%
130%
B
130%
A V primary
B V secondary
Adjust the functioning of the primary side circulation pump during commissioning
Hydraulic connection/connection requirements
Single boiler system
Connection of heating circuits with connection set with inte-
gral low loss header
Circulation pump VI PARA 30/1-12
VIESMANN
24
(cont.)
100%
A
High efficiency circulation pump in the heating circuit connec-
tion set (accessories)
The highly efficient circulation pump uses significantly less power
compared to conventional pumps.
Matching the pump rate of the circulation pump to the individual sys-
tem conditions reduces the power consumption of the heating sys-
tem.
Circulation pump VI PARA 30/1-12
Rated voltage
Power consumption
– max.
– min.
Variable speed (Δp constant or Δp variable), fully wired.
Control unit setting
Coding address/group
30:0/boiler/2
V~
W
W
Circulation pump setting
Ext. In
2 2
6 6
12 12
Recommended for Δt = 15 K
= 4 ≙ 6.87 m
– 120 kW:
= 6 ≙ 8.40 m
– 150 kW:
Recommended for Δt = 20 K
= 2 ≙ 5.16 m
– 120 kW:
= 3 ≙ 6.44 m
– 150 kW:
VITODENS 200-W
230
310
16
3 /h
3
/h
3
/h
3 /h