33
A
Fig. 27
1.
Check whether the air vent screw in quick-action
air vent valve
A
of the heating circuit pump is
open.
2.
Close the gas shut-off valve. Switch the appliance
on.
3.
Activate venting function (see following steps).
4.
Call up the pressure display with
"System over-
view"
.
Check the system pressure.
Activating the venting function
If the venting function is to be activated after commis-
sioning.
Tap the following buttons:
1.
and
OK
– press simultaneously for approx. 4 s,
then release.
2.
Use
/
to select
"Basic settings"
.
3. OK
4.
Use
/
to select
"Commissioning assistant"
.
5. OK
6.
/
for
"Next"
and
OK
until
"Venting"
appears.
7. OK
The venting function is activated. The display
shows the system pressure.
The venting function ends automatically after
20 min or when you tap
OK
.
Commissioning, inspection, maintenance
Venting the heating system
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