I am doing factory served by CAV AHU, cooling only. Constant volume is due to positive pressurization to avoid infiltration.

From Table G3.1.1A, the baseline is system 8, which is VAV. 

I believe the baseline also to be CAV to keep positive pressurure as the design inteds. 

Is there any desicriotion in 90.1 to choose CAV baseline as per the design?

Thank you