The HVAC System is a single zone system and is serving a combination of Process Zones (Kitchen or Lab or Computer Room) and also Non-Process Zones (any other Occupancies). The CBECC Com engine does not allow you to mix these types of Zones on one single zone System. If you want to combine these on a Multiple Zone system (Packaged VAV, etc.) then you can.
In the Building Tree, you must change all the Zone Occupancy Types for this System to be either Process Zones, or Non-Process Zones.
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