So, I was perusing the web on the subject, and I am not sure I am interpreting what I found correctly. However, here is my - possibly erroneous - take on it.
1) In order to avoid having to model any HVAC loops, I have to use ideal air loads - yes, no?
2) When using ideal air loads, no outdoor air is being included in the calculations - ever - no matter what is entered under Spaces -> Airflow -> Design Specification Outdoor Air Object Name?
3) Hence, if I do want to investigate outdoor air, I must model my HVAC loops?
I'd appreciate your advice on this.