It seems OS is not capable of assuming single thermal zone for multiple spaces of different space types. I am trying to use OS for one of my LEED projects, when I select different space types (i.e. five spaces) and assign a thermal zone for them the simulation results (as shown in lighting summary table) indicates the program assumes five thermal zones, one for each space, with the same area, LPD and total power. However, there would be no problem if the selected spaces were with similar space type. Am I missing something or this is a problem with the software? Thank you for your time,