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One approach is to run EP-Macro first and get out.idf. Then out.idf can be run using EP-Launch which will automatically run parametric preprocessor program. AbsorptionChiller_Macro.imf EnergyPlus example file is a good place to start. The HVAC3ZoneMat-Const.idf below can have Parametric:SetValueForRun etc. objects.
One approach is to run EP-Macro first and get out.idf. Then out.idf can be run using EP-Launch which will automatically run parametric preprocessor program. AbsorptionChiller_Macro.imf EnergyPlus example file is a good place to start. The HVAC3ZoneMat-Const.idf below can have Parametric:SetValueForRun etc. objects.
##include C:\EnergyPlusV8-5-0\HVAC3ZoneMat-Const.idf