Viessmann VITODENS 333 Service Instructions Manual page 25

Further details regarding the individual steps
Checking and replacing the magnesium anode (if required)
Check the magnesium anode. We
recommend you change the magne-
sium anode if it has been reduced
down to 10 to 15mm Ø.
Taking the DHW cylinder back into use
Initial start-up, inspection, maintenance
(cont.)
5. Remove hard deposits that cannot
be removed by a high pressure
cleaner, with a chemical cleaning
agent.
!
Important information
Never use hydrochloric
cleaning agents.
6. Thoroughly flush the DHW cylinder
after cleaning.
1. Reconnect the DHW cylinder to the
pipework.
2. Insert new gasket A underneath
the flange lid B.
3. Fit flange lid B and tighten the
screws with a maximum torque of
25 Nm.
4. Push earth cable C onto connect-
ing tab D.
5. Fill the DHW cylinder with potable
water.
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