I have some Trane VAV boxes, model VCCD that are pneumatically controlled at present. They are the old kind with that cone type air valve.
Does anyone know if there is a way to convert these to electronic controls. Ive never been inside of one to see what the actual actuator looks like or how it drives that shaft the cone rides on.
I cant find anything on the net except for something on the stromquist website about gutting out the air valve that is presently in the box and adding a damper with a 0-10 volt or what have you actuator onto the the inlet of the vav.