The Weather folder will display which weather file the model is currently using. Weather data for the location of the building needs to be included in the model. These data contain hourly information on temperatures, sunshine, humidity, wind velocity and cloud cover for a whole year.
Note that by right-clicking anywhere on the Tree View, options will be provided to create a heating or a cooling design day. For more details on setting up design days, read the following topics:
To see which weather file is being used, you can double-click on the Weather folder, or you can left-click on the '+' symbol next to the folder. Repeating either of these operations will close the folder. The same is true of the design days, just double-click click on the associated folders or left-click on the '+' symbol.