Checking The Condensate Drain And Cleaning The Trap - Viessmann VITODENS 111-W Installation And Service Instructions Manual

Commissioning, inspection, maintenance
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. 34

Checking the condensate drain and cleaning the trap

!
Please note
Prevent damage due to condensate.
Cover electronic components with suitable
watertight material.
Fig. 35
1. Pivot the HBMU heat management unit forwards.
52
(cont.)
1. Use a vacuum cleaner to remove combustion resi-
2. Flush heating surface
3. Check condensate drain. Clean the trap: See the
4. Check the thermal insulation mat (if installed) in the
5.
2. Cover electronic components with suitable water-
dues from heating surface
exchanger.
A
following chapter.
heat exchanger for damage, replace if necessary.
3.
4.
tight material.
A of the heat
with water.