ASHRAE 62.1 unoccupied space minimum outdoor air supply

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Dear all,

ASHARE 62.1 2007 deifned zone as an occupied space. Table 6-1 provides
the calculation for different spaces based on occupancy and floor area
of the occupied space.
If we consider an unoccupied office space at night (i.e. not strictly a
"zone anymore" ); is there any requirement to provide minimum fresh air
wihin the office space.

Thanks in advance for your help
Michael

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