Cleaning The Heat Exchanger - Viessmann Vitodens 050-W Installation And Service Instructions Manual

Commissioning, inspection, maintenance
Further details regarding the individual steps

Cleaning the heat exchanger

!
Please note
Do not damage the surfaces of
the heat exchanger that come
into contact with hot gas. This can
lead to corrosion damage.
Never use brushes to clean the
heat exchanger.
Brushing can cause deposits to
become lodged in the gaps
between the coils.
A
32
(cont.)
Note
Discolouration on the heat exchanger
surface is a normal 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.
1. Use a vacuum cleaner to remove
combustion residues from heating
surface A of the heat exchanger.
2. Flush heating surface A with
water.
3. Check condensate drain and clean
siphon. See the following chapter.
4. Flush the heating surface again with
water (the siphon is also filled with
water in the process).