Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
OpenStudio has some logic in the osm -> idf code that says if there are zones and design days then turn on zone sizing no matter what. This is because OpenStudio is expecting there to be (autosized) equipment, and therefore will always write out a Sizing:Zone object if there is zones with equipment or ideal air loads.
The idea is to avoid the possibility of having a failed simulation, but clearly there are some cases where this is getting in the way. @MatthewSteen just filed an issue. I'm thinking maybe we need to relax the heavy handed override.
I'm still not completely clear why this is getting in the way of your simulation. I understand it adds some simulation time, but I can't grasp why it is negatively impacting simulation results unless you have autosized equipment bolted to the zone, in which case you would need the zone sizing simulation anyway.
