I'm sure i'm missing it, but I have not seen a way to configure the igGrid to initially sort on a specific column and sort direction when the igGrid is first displayed. Can you shed any light on this?
Thanks.
http://help.infragistics.com/jQuery/2015.1/ui.iggridsorting#options:columnSettings
When you define the column settings you can specify the 'firstSortDirection'.
See:
http://help.infragistics.com/jQuery/2015.1/ui.iggridsorting#options:columnSettings.firstSortDirection
Do note the differences in the CODE and the API for ASC and DESC. Try both to see which one picks up. More than likely a bug in the documentation.