Hi, I just received the feedback from reviewer. We have AHU to supply 100% OA to the space and FCUs for secondary recirculation. Reviewer said:

"The design system primary supply air flow volume (Vps) don't match the supply air flow of AHU in equipment schedule. + Calculation must be performed at the worst-case condition when VAV system is at minimum flow."

I'm try to figure out where is the error in my calc. I'm checking Vdzd, Ds, Vpz, Vps. For example, Vdzd = 1,400 (OA /SA by AHU) + 10,000 (recirculated by FCU) = 11,400 cfm. How can I adjust (Ds). I had set Ds = 100% beforehand. I think that had made supply airflow by AHU was much larger than that in equipment schedule. And I just check that Vdzd * Ds = Vpz (supply airflow by AHU) = 1,400 cfm. So is it correct that I adjust Ds = 1,400/11,400 = 12%