Technische Alternative UVR 16x2 - Page 79

Cascade
79
Parameters
Cascade stages settings
Sub-menu for setting the delay for each individual cascade stage
Generator settings
Sub-menu for:
• Generator assignment (single or multi stage generator)
• Setting the minimum runtimes
• Assigning the generator sequence
• Selecting the generators for automatic generator change
• Difference in hours run for generator change
Hrs run diff. for
generator change
Difference hours run
The hours run differential after which an automatic generator change
take place
Reset hours run,
generator A – H, or all
The hours run meters of the heat generators can be reset individually
or all together.
➢ The delays for individual stages start running with the first activation of a stage.
➢ Generator sequence for multi stage boilers: the stages following the 1st stage are
subsequently added to the generator sequence.
Example: with a 3-stage boiler A, if generator A1 is 3rd in the sequence (= 1st boiler stage),
then boiler stages A2 and A3 come 4th and 5th.
➢ Conditions for generator change:
o If there are 2 or more generators, the change must be approved.
o Every 10 minutes, the system checks whether the generator sequence should be
changed.
o If the difference in hours run is greater than the set differential, the change will be
carried out, provided that the generators affected by the change are either all ON or
all OFF.
o If the difference in hours run is greater than twice the set differential, the change will
be carried out regardless of whether all the generators are ON or OFF.