Checking The Flue Gas Non-Return Device; Checking And Adjusting The Ignition And Ionisation Electrodes - Viessmann Vitodens 200-W Series Installation And Service Instructions Manual

Commissioning, inspection, maintenance

Checking the flue gas non-return device

Fig. 26
1. Undo three screws and remove fan
2. Remove flue gas non-return device
3. Check the damper and gasket for dirt and damage.
Replace if required.

Checking and adjusting the ignition and ionisation electrodes

6 +2
0
A
Fig. 27
A Ignition electrodes
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.
!
Please note
Wire mesh:
Do not damage.
32
B
A
.
A
.
B
5
+3
0
A B
4. Refit flue gas non-return device
5. Refit fan and secure with three screws.
A
Torque: 3.0 Nm.
14
±1
3. Check the electrode gaps. If the gaps are not as
specified or the electrodes are damaged, replace
the electrodes and gaskets and adjust them as
required. Tighten the electrode fixing screws with a
torque of 2 Nm.
.
B