In the Title 24 Standards section 120.1, the code mandates a minimum exhaust rate based upon the occupancy of the space. When you select the Zone Occupancy and Ventilation function in the General tab, this information is determined.
One choice is to select a different Ventilation function for the Zone. Go to the Zone and click on the General tab and click the Select button to change the Ventilation function.
The other choice is to go to the Zone and click on the Mechanical tab and specify an exhaust fan that will provide the exhaust rate shown on that tab.
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