We have a VAV system where single AHUs serve multiple zones. Do we need to take outside air measurements at each VAV box?
If a single AHU is supplying outside air to multiple zones through VAV boxes, outside air measurements need to be tested at the AHU level but not a the VAV boxes.
Question:
We have a VAV system where single AHUs serve multiple zones. Do we need to take outside air measurements at each VAV box?