Mechanical Plans still under design

You will need complete mechanical drawings at some point, but it’s common for some HVAC systems to be designed later, especially in “design-build” situations, so you have two options: 1. You can defer that credit to the Construction phase (unattempt the credit for the design submittal) and wait until you do the construction phase submittals or, 2. Submit as detailed a drawing as you can, and provide a mechanical narrative or “performance specification” that says what specifications or performance requirements the HVAC contractor will be required to meet. The advantage of #2 is you may get back preliminary comments on your design submittal that gives you a better idea of what you’ll need to show in your documentation. Once you have that feedback, if you still won’t have enough information until after the design phase you could unattempt the credit for now and re-attempt it during the construction phase. Does that make sense?