Checking And Adjusting The Ignition And Ionisation Electrodes; Cleaning The Heat Exchanger; Checking The Condensate Drain And Cleaning The Siphon - Viessmann Vitodens 200-W Installation And Service Instructions For Contractors

Checking and adjusting the ignition and ionisation electrodes

+2
6
0
A
Fig. 25
Ignition electrodes
A
Ionisation electrode
B
1. Check the electrodes for wear and contamination.
2. Clean the electrodes with a small brush (not with a
wire brush) or sandpaper.

Cleaning the heat exchanger

!
Please note
There should be no scratches or other damage
on the heat exchanger surface that comes into
contact with hot gases. This could lead to corro-
sion damage.
Never use brushes to clean the heating sur-
faces.
Brushing can cause existing deposits to get
stuck in the coil gaps.
A
Fig. 26

Checking the condensate drain and cleaning the siphon

Multi-boiler system:
Clean the siphon in the flue gas header as well.
+3
5
0
A
Commissioning, inspection, maintenance
10
±1
B
3. Check the electrode gaps. If the gaps are not as
specified or the electrodes are damaged, replace
the electrodes together with new gaskets and
adjust them as required. Tighten the electrode fixing
screws with 4.5 Nm.
Note
Discolouration of the heat exchanger surface is a nor-
mal sign of usage. It has no impact on the function and
service life of the heat exchanger.
The use of chemical cleaning agents is not necessary.
1. Use a vacuum cleaner to remove deposits from
heating surfaces of the heat exchanger.
A
2. If required, rinse heating surfaces
3. Check condensate drain and clean siphon. See the
following chapter.
with water.
A
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