11
3. "Time / Date"
4.
Set current time and date.
Venting the heating system
1.
Close the gas shut-off valve and
switch the control unit ON.
2.
Activate venting program (see next
steps).
Note
For function and sequence of the
venting program, see page 127.
3.
Check the system pressure.
Activating venting program with
weather-compensated control units:
1.
Press
OK
and
å
simultaneously
for approx. 4 s.
2. "Service functions"
3. "Venting"
4.
Terminating venting program:
Press
OK
or
ä
.
Activating venting program with con-
stant temperature control units:
1.
Press
OK
and
å
simultaneously
for approx. 4 s.
2.
Select
Ú
"
5
"
and confirm with
OK
.
When the venting program is activa-
ted,
"EL on"
is shown on the dis-
play.
3.
Terminating venting program:
Press
ä
.
Filling the siphon with water
B C
A
1.
Remove retaining clip
A
and pull out
insert
B
.
2.
Fill siphon
C
with water and reas-
semble.
Note
Install the supply hose the correct
way round.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5692 843 GB