Checking The Flue Gas Non-Return Device - Viessmann VITODENS 200-W Installation And Service Instructions Manual

Checking the flue gas non-return device

B
A
Fig.30
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.
Commissioning, inspection, maintenance
4. Refit flue gas non-return device
A .
. 5. Refit fan
B
Torque: 3.0 Nm.
B
and secure with three screws.
A
.
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