Illegal combined power parameter state

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This fault can occur when you are using dry coolers. One of their parameters is the ‘zero load propagation’. As the name states, choosing “yes” means that the dry cooler is not part of the full load design conditions in summer when the building requires cooling. This means that from the moment pipes cross the path from the dry cooler to the production units, this thermal power won’t be accounted for. If however, the user wants to summarise the thermal power of the dry cooler and the other end units, “no” should be selected.

The error can occur if 2 or more zero load propagation combines together, Hysopt doesn’t understand the sum of multiple zero’s. This is something being worked on, but if you meet this fault, has not been fixed yet.

Workaround:

Using the Design conditions override for cooling, ou can use the power propagation and set it to zero. This allows you to calculate the fault.

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