Checking The Condensate Drain And Cleaning The Siphon - Viessmann VITODENS 100-W Installation And Service Instructions Manual

Commissioning, inspection, maintenance
Further details regarding the individual steps
A

Checking the condensate drain and cleaning the siphon

B
A
32
(cont.)
1. Use a vacuum cleaner to remove res-
idues from heat exchanger A inside
the combustion chamber.
2. If required, spray slightly acidic,
chloride-free cleaning agents based
on phosphoric acid (e.g. Antox 75 E)
onto heat exchanger A and let the
solution soak in for approx. 20 min.
3. Thoroughly flush heat exchanger A
with water.
1. Pull siphon A upwards out of the
drain connection.
2. Detach supply hose B from siphon
A.
3. Clean siphon A.
4. Reconnect supply hose B.
5. Refit siphon A to the drain connec-
tion.
6. Fill siphon A with water by pouring
about 0.3 l of water into the combus-
tion chamber.
7. Check that condensate can drain
freely and that the connections are
tight.