Hi,

thanks everybody for the great help. I still have a problem with my
building. In the perimeter zones I have the IU but in the core I only
have exhaust air (corridor and restrooms) the air in the core is only
coming from the perimeter it does not get any separate supplied air. Is
there a way I can model a zone with only exhaust air? How can I tell the
program that the core zone is getting its air only from the perimeter
zone (OA-from system?) ?

Thanks