Pulsation Noises - Viessmann VITOCROSSAL 300 Service Instructions Manual

Further details of the individual steps

Pulsation noises

Independent of the make of boiler, burner or flue gas system, gas-tight flue
systems can create pulsation noises.
A change of resonance may be effected by rotating the damper fitted into the
flue outlet.
Initial start-up, inspection and maintenance
(cont.)
1. Loosen M 10 nut A in handle B
of damper C.
2. Adjust the handle until all
pulsation noises have ceased
(the handle mirrors the damper
position).
3. Lock the damper with M 10 nut A.
4. If necessary, readjust the burner.
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