Hello All,

I am trying to understand the stated appendix for the baseline model.

When I am calculating the Pfan for a system, do I need add up supply,
return, system and room exhaust cfm's?

I got this comment from GBCI: "Revise the sum of the supply, return,
exhaust, and relief fans for each HVAC system to be equal to the volume
calculated in G3.1.2.8 and power calculated in G3.1.2.9 (where CFM
refers to supply air volume)."

Please let me know your input on how to calculate Pfan.

Thanks,

Fareed Syed EIT, LEED(r) AP