Viessmann VITODENS 200 Start-Up And Service Instructions page 10

Initial Start-up and Service
Steps
(continued)
I
nitial start-up
Water flow
10
1. Fill heating system with water (continued)
5. Check system pressure and open
ball valve
6. Shut off the boiler from the heating
system on heating water side (close
shutoff valve
7. Connect drain hose to drain valve
or .
8. Open drain valve
the boiler with system pressure
until noise due to the presence of
air is eliminated.
9. Close drain valve
open ball valve
10. Check system pressure.
11. Ensure proper/adequate fuel supply
exists. Open gas shutoff valve.
Air vent
).
or and vent
or and
.