Filling Siphon With Water - Viessmann FB2B Installation And Service Instructions Manual

Further details regarding the individual steps
Note
For function and sequence of the
venting program, see page 137.
3. Check the system pressure.
Activate venting program:
1. Press OK and å simultaneously
for approx. 4 s.

Filling siphon with water

B
A
C
Commissioning, inspection, maintenance
(cont.)
2. "Service functions"
3. "Venting"
4. Terminating venting program:
Press OK or ä.
1. Pivot control unit forward.
2. Pull retaining clip A off.
3. Pull filler pipe B upwards.
4. Pull off trap C downwards.
5. Fill siphon with water and reassem-
ble.
6. Refit cover panel.
7. Secure control unit back in operating
position.
29