Hi everyone, I'm working on an energy model following ASHRAE 90.1-2010 and I have a question regarding the baseline systems. Specifically, for System 4 (PSZ-HP) and System 6 (Packaged VAV with PFP Boxes & Reheat) — are these systems modeled with air recirculation in the baseline case? I'm trying to ensure my unmet hours are within limits and want to confirm if recirculation is assumed or if it's 100% outdoor air. Any insights or references from Appendix G or modeling guidelines would be greatly appreciated. Thanks in advance!
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