Checking The Condensate Drain And Cleaning The Trap - Viessmann VITODENS 200-W Installation And Service Instructions Manual

Cleaning the heating surfaces
Note
Discolouration on the heat exchanger surface is a nor-
mal sign of use. It has no bearing on the function and
service life of the heat exchanger.
The use of chemical cleaning agents is not required.
A
Fig. 32

Checking the condensate drain and cleaning the trap

Multi boiler system:
Clean the trap in the flue gas header as well.
A
B
Fig. 33
1. Check at the trap that the condensate can drain
freely.
2. Remove supply hose
3. Remove trap .
B
4. Clean trap .
B
.
A
Commissioning, inspection, maintenance
(cont.)
1. Use a vacuum cleaner to remove combustion resi-
dues from heating surface
exchanger.
2. Flush heating surface
3. Check condensate drain and clean trap. See the
following chapter.
4. Flush the heating surface again with water. This
will also fill the trap with water.
5. Fill trap
B with water.
6. Refit trap .
B
7. Reconnect supply hose
Note
Never twist the supply hose during assembly.
A of the heat
with water.
A
.
A
45