Viessmann Vitodens 200 Operating Instructions And User's Information Manual page 27

Multiple-boiler control unit (continued)
Flue gas header
Flue gas header
Yes
Boiler sequence change
Auto sequence
change Yes
Pump seizure protection
Pump seizure
protection Yes
Reset hours counter
Reset
counters Yes
Select "No".
"Yes": The start-up sequence is determined once a week based on the operating
hours of each boiler.
"No": The start-up sequence is permanently set (based on the connection sequence).
Select "Yes" if the connected heating system pump should be started at least once a
day to prevent it from seizing.
Select "Yes" to set all operating and start-up counters to zero, e.g. during start-up.
The current date is defaulted as start date.
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