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Sensors must generate an alarm to the system operator and, if desired, building occupants, when the CO2 concentration in any zone rises more than 15% above the minimum requirement in ASHRAE 62.1-2007.

Sensors must generate an alarm to the system operator and, if desired, building occupants, when the CO2 concentration in any zone rises more than 15% above the minimum requirement in ASHRAE 62.1-2007.

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