Checking And Adjusting The Ignition And Ionisation Electrodes; Cleaning The Heating Surfaces - Viessmann Vitodens 222-F B2TA Installation And Service Instructions Manual

Commissioning, inspection, maintenance
Further details regarding the individual steps
5. Fit thermal insulation ring D.

Checking and adjusting the ignition and ionisation electrodes

+2
6
0
A
A Ignition electrodes
1. Check the electrodes for wear and
contamination.
2. Clean the electrodes with a small
brush (not with a wire brush) or sand-
paper.

Cleaning the heating surfaces

!
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 corrosion damage.
Never use brushes to clean the
heating surfaces.
Brushing can cause existing
deposits to get stuck in the coil
gaps.
52
6. Fit electrodes B.
Torque: 4.5 Nm.
+3
5
0
A
B Ionisation electrode
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 elec-
trode fixing screws with 4.5 Nm.
Note
Discolouration of the heat exchanger
surface is a normal 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.
(cont.)
10
±1
B