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# Revision history [back]

Try importing the IDF into the corresponding version of OpenStudio, which will retain most EnergyPlus objects except for HVAC (see this question for more details). Then:

1. Save the OSM file

2. Add the Enable Ideal Air Loads For All Zones (or check all the boxes on the Thermal Zones tab)

3. Run the OSM to generate the out.idf from OS, which can be found in the <osm folder>/run/#-EnergyPlusPreProcess-0

Try importing the IDF into the corresponding version of OpenStudio, which will retain most EnergyPlus objects except for HVAC (see this question for more details). Then:

1. Save the OSM file

2. Add Check all the Ideal Air Loads boxes on the Thermal Zones tab (or add the Enable Ideal Air Loads For All Zones (or check all the boxes measure on the Thermal Zones tab)Measures tab)

3. Run the OSM to generate the out.idf from OS, which can be found in the <osm folder>/run/#-EnergyPlusPreProcess-0