Apprentice answer

What do I do if a zone is starved for air and the balancer says my fitting is causing turbulence

4th YearAirflow, TAB, Startup & TestingCheck first

Inspect the interior of the problematic fitting using a small mirror tool or borescope camera. Check if a splitter damper or internal acoustic lining layer has come loose and flipped across the air stream. * If the fitting design itself is the issue (such as a square throat elbow fabricated without turning vanes), you must modify the run on-site by retrofitting engineered turning vanes inside the turn or replacing the choked fitting with a smooth radius transition turn.

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Plain-English answer

Field checklist

Inspect the interior of the problematic fitting using a small mirror tool or borescope camera. Check if a splitter damper or internal acoustic lining layer has come loose and flipped...

Ask Foreman

Hey boss, I’m checking tab / startup prep: What do I do if a zone is starved for air and the balancer says my fitting is causing turbulence? I found the likely issue and want to verify the next step before I lock it in. Do you want me to adjust it now or check the drawing/detail first?

Verify before acting

Use this as training guidance. The foreman, approved drawings, project specs, manufacturer installation instructions, employer safety policy, and AHJ/code requirements always control the final answer.

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