Viessmann VITODENS 200-W B2HA Installation And Service Instructions Manual page 32

Commissioning, inspection, maintenance
Filling the heating system
Total permissible hardness of the fill and top-up water
Total heating output
kW
50
≤
50 to 200
> ≤
200 to 600
> ≤
600
>
Fig. 21 Connection set with integral low loss header
Fig. 22 Connection set without low loss header
32
(cont.)
Specific system volume
< 20 l/kW
3
3.0 mol/m (16.8 °dH)
≤
2.0 mol/m 3 (11.2 °dH)
≤
1.5 mol/m 3 (8.4 °dH)
≤
3
< 0.02 mol/m (0.11 °dH)
A
A
20 l/kW to < 50 l/kW
≥
3
2.0 mol/m (11.2 °dH)
≤
1.5 mol/m 3 (8.4 °dH)
≤
0.02 mol/m 3 (0.11 °dH)
≤
3
< 0.02 mol/m (0.11 °dH)
1. Check the pre-charge pressure of the diaphragm
expansion vessel.
2. Close the gas shut-off valve.
3. Filling the heating system:
■ Single boiler system: valve
■ Multi boiler system: valve
System pressure 1.0 bar (0.1 MPa).
>
4. Close boiler drain & fill valve
50 l/kW
≥
3
< 0.02 mol/m (0.11 °dH)
< 0.02 mol/m 3 (0.11 °dH)
< 0.02 mol/m 3 (0.11 °dH)
3
< 0.02 mol/m (0.11 °dH)
A
(see page 35)
F
.
A