Tap too close to elbow/fitting

A tap too close to an elbow can make the branch noisy or short on air. Measure the tap location and ask before cutting a new hole or leaving it.

Airflow, Noise, Vibration & TAB 2nd Year YELLOW

Stop if

This takeoff is about [distance] from the elbow/fitting and the diffuser is noisy/short. Do you want the tap relocated or reviewed before we close it?

Watch out

Do not keep adding mastic or adjusting the diffuser to hide a bad takeoff location.

Check

Measure from elbow/fitting face to takeoff centerline.
Check if the takeoff is in turbulent air right after a turn.
Look for whistle/noise, low CFM, or balancing problem at served diffuser.
Photo the tap location with tape visible.
Ask whether to relocate the tap, add turning/transition detail, or hold for direction.

Steps

Measure from elbow/fitting face to takeoff centerline.
Check if the takeoff is in turbulent air right after a turn.
Look for whistle/noise, low CFM, or balancing problem at served diffuser.
Photo the tap location with tape visible.
Ask whether to relocate the tap, add turning/transition detail, or hold for direction.

Say this to your foreman

This takeoff is about [distance] from the elbow/fitting and the diffuser is noisy/short. Do you want the tap relocated or reviewed before we close it?