I am working on a building that has incremental or time based actuators on all of the terminal boxes and reheat actuators. Currently I see the time is set anywhere from 45 to 75 seconds. My main concern is I do not see anywhere in the system that an autocalibrate function is in place. Other control systems that I have installed and programmed with incremental actuators have a means of auto-zero or autocalibrate. It resides in the controller or is scheduled in groups. If the actuators are not being driven closed to get back in sync, every 24hrs poor control of airflow and reheat will be the results.
Any help would be appreciated.