For balanced constant volume 100% OA systems it is sufficient to install current transducers or similar monitoring devices. What I am missing is what to do with the signal from this device, especially in cases when the minimum OA rate is not supplied. All I can find in the reference guide is that such devices must be installed (both in requirements and step-by-step guidance), but nothing on local alarms or a connection to the building management system.

Is there something I miss? I assume a local alarm or logging is fine.