VAV Box Inlet and Outlet Orientation

Confirm which connection is inlet from main and which is outlet to branches. Verify before connecting.

I'm checking vav box inlet and outlet orientation at [location]. I found VAV box with multiple duct connections, unsure which is supply inlet vs discharge. Confirm which connection is inlet from main and which is outlet to branches. Verify before connecting.

Joints, TDC, Flanges & Connections 2nd Year YELLOW

Stop if

Hold point on vav box inlet and outlet orientation: I have the location, photo, drawing/detail, and what was checked. Who should verify before this gets cut, covered, lifted, sealed, energized, or signed off?

Watch out

Don't assume inlet and outlet interchangeable. Don't connect without checking airflow arrow. Don't force misaligned connections.

Check

room/grid/area
photo of condition
drawing/detail
manufacturer/model if visible
what I already checked

Say this to your foreman

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