
24
Activating the venting function
Weather-compensated control unit
Constant temperature control unit
Service menu
1. Press
OK
and
å
simultaneously for approx. 4 s.
2.
"Service functions"
3.
"Venting"
Venting function is enabled.
4. Ending venting function:
Press
OK
or
ä
.
Service menu
1. Press
OK
and
å
simultaneously for approx. 4 s.
2. Select
"
5
"
with
Ú
and confirm with
OK
.
"ON"
flashes.
3. Activate the venting function with
OK
.
"EL on"
is shown constantly.
4. Ending venting function:
Press
ä
.
Filling the siphon with water
Multi-boiler system:
Fill the siphon in the flue gas header with water as
well.
A
B
Fig. 19
1.
Remove retaining clip
A
and siphon
B
.
2.
Fill siphon
B
with water.
3.
Mount siphon
B
and secure with retaining clip
A
.
Note
Never twist the inlet hose during assembly. Route
the drain hose without any bends and with a con-
stant fall.
Checking all connections on the heating water side and DHW side for leaks
Designating heating circuits - only for weather-compensated control units
In the delivered condition, heating circuits are designa-
ted
"Heating circuit 1"
,
"Heating circuit 2"
and
"Heating circuit 3"
(if installed).
If the system user prefers, heating circuits can be re-
designated to suit the specific system.
To enter names for heating circuits:
Operating instructions
Commissioning, inspection, maintenance
Venting the heating system
(cont.)
5772 980 GB