Credit states "Monitoring
Mechanically ventilated spaces
For mechanically ventilated spaces (and for mixed-mode systems when the mechanical ventilation is activated), monitor outdoor air intake flow as follows:
• For variable air volume systems with an outdoor air intake in the project scope of work, provide a direct outdoor airflow measurement device capable of measuring the minimum outdoor air intake flow with an accuracy of +/–10% of the design minimum outdoor airflow rate, as defined by the ventilation requirements above. An alarm must indicate when the outdoor airflow value varies by 15% or more from the outdoor airflow setpoint."
We are doing the second floor upfit of a 3 storey bldg served by 2 rooftop units that serve all 3 floors. The units are existing and not in the scope of work other than we will add MERV13 filters. Are we required to install air flow monitoring on the units as there is no way to control it specifically to the second floor requirements?