Venting the boiler
1.
Close the shut-off valves on the
heating water side.
2.
Connect the drain hose on valve
A
with a drain.
3.
Open valve
A
and the fill valve in
the heating return and vent using
mains pressure (flush) until no
more air noise can be heard.
4.
Close valve
A
and the fill valve in
the heating return, and open the
shut-off valves on the heating
water side.
Venting the heating system
1.
Close the gas shut-off valve and
switch ON the control unit.
2.
Activate the venting program via
coding "2F:1".
Note
To call up coding level 1 and for
setting the coding address, see
page 46.
For function and sequence of the
venting program, see page 109.
Whilst the venting program is run-
ning, the display shows
"EL"
(Vitotronic 100) or
"Entlüftung"
(venting) (Vitotronic 200).
Further details regarding the individual steps
(cont.)
10
Commissioning, inspection, maintenance
56
92
682
GB
Summary of Contents for Vitodens 333-F
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