Downstream VAV Layout: Protect Diffuser Performance and Access
Lay out the downstream duct, branches, dampers, flex, and diffusers so the approved airflow distribution, access, ceiling coordination, and service clearances remain workable.
Stop if Does this downstream VAV layout preserve the approved branch arrangement, balancing access, and diffuser locations? Watch out Do not field-split the outlet by convenience, bury balancing dampers, or reroute branches without checking airflow and ceiling coordination. Check Confirm outlet arrangement and airflow quantities Check branch locations against the reflected ceiling plan Keep balancing devices and access reachable Avoid sharp immediate turns or crushed transitions where details require straight discharge Coordinate flex lengths, diffuser orientation, and ceiling obstructions Steps Confirm outlet arrangement and airflow quantities Check branch locations against the reflected ceiling plan Keep balancing devices and access reachable Avoid sharp immediate turns or crushed transitions where details require straight discharge Coordinate flex lengths, diffuser orientation, and ceiling obstructions Say this to your foreman Does this downstream VAV layout preserve the approved branch arrangement, balancing access, and diffuser locations?
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