9
Venting the boiler
A
B
1.
Close the shut-off valves on the heat-
ing water side.
2.
Connect the drain hose between top
valve
B
and a drain outlet.
3.
Open valves
A
and
B
and vent
using mains pressure until no more
air noise is audible.
4.
Close valves
A
and
B
and open
the heating water shut-off valves.
Venting the heating system
1.
Start the control unit.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5692 799 GB
Summary of Contents for VITOLADENS 300-W
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