Viessmann Cascade control unit Installation, Operating And Service Instructions page 13

Initial start-up/configuration
Pump
Pump
Number of boilers
Number of boilers
Flue gas cascade
Flue gas cascade
Boiler sequence change
Boiler sequence
change
Pump protection control
Pump protection
control
Resetting the hours run counter
Counter
clear
(cont.)
Select "Yes" if a distribution pump is to be
connected to the control unit.
Yes
Enter the number of boilers in the multi-boiler
system.
2
Select "Yes" if a pressure flue gas cascade is
installed.
Yes
The lag boiler will only be started if the operational
boiler has reached at least 80 % of its rated
output.
"Yes": The start-up sequence is determined
once per week subject to the number of
Yes
hours run.
"No": The start-up sequence is permanently set
(subject to the connection sequence)
Select "Yes" if the connected distribution pump
should be started at least once a day for a few
Yes
minutes to prevent it from seizing.
Select "Yes" to set all operating and impulse
counters to zero, e.g. during commissioning.
Yes
The current date is automatically defaulted as
start date.
Control
13