The HVAC API of energyplus is really complex. openstudio is excellent for standard systems (PackagedRoofHeatPump for exemple)
To customize things, you have to acquire some knowledge of how an idf file is structured.
IDFEditor is great for visualisation, but fastidious for data entry.
On the contrary, the eppy library is a good starting point to complete an idf through python code, but lack of autocompletion facilities.
So a toolkit for autocompletion has been produced :-)
for openstudio 1.8.0 :
- https://github.com/openstudiocoalition/OpenStudioApplication/releases/tag/v1.8.0
- https://github.com/openstudiocoalition/OpenStudioApplication/releases/download/v1.8.0/OpenStudioApplication-1.8.0+2722e3e751-Windows.exe
the 1.8.0 version will install energyplus 24.1.0 but not a complete version : IDFEditor will not be available
the full version can be installed from https://energyplus.net/downloads