Swegon BlueBox Zeta Rev Series Installation, Use And Maintenance Manual page 55

The pump operating speed percentage in free cooling units must be set up both when free cooling is enabled and when it
is not.
The operator has to repeat the manual procedure to find the pump operating speed with the free cooling valve open and
then closed.
For free cooling units with decoupling exchanger (FC/NG) where the head losses do not change, only one value is set.
At the end of the manual procedure to determine the flow rate under possible conditions, make sure that
operation is switched back to automatic mode.
We reserve the right to make changes without any prior notice. Translation from original instructions
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