Viessmann Vitodens 100 Installation And Service Instructions Manual page 53

Routine Servicing Instructions
Checking the condensate drain and cleaning the siphon
1. Check at the siphon, that the con-
densate can freely drain.
2. Place an appropriate container
under the siphon A.
3. Remove the locking cap B and
drain the siphon content.
(cont.)
4. Replace the locking cap B.
5. Fill the siphon A with water by
pouring about 0.3l of water into the
combustion chamber.
Service Instructions
53