If a square throat and heel elbow with turning vanes arrives on site twisted, what should be done?

When a square throat and heel elbow with turning vanes arrives twisted, it is essential to address the twist to ensure proper airflow and efficiency within the HVAC system. Removing the turning vanes allows for easier adjustment of the elbow back to its correct orientation without damaging the vanes themselves. Once the elbow is de-twisted and aligned correctly, reinstalling the turning vanes is crucial as they are designed to improve the flow characteristics of the air passing through the elbow.

Turning vanes play an essential role in directing airflow smoothly around the bends of the ductwork, minimizing turbulence and energy loss. If the elbow is installed without correcting the twist or without properly reattaching the turning vanes after correction, it could lead to increased resistance, noise, and decreased system performance.

This approach ensures that the elbow is functional and efficient in redirecting airflow, which is vital for maintaining the desired performance of the HVAC system. Correct installation practices will help ensure the longevity and reliability of the ductwork, and properly addressing any issues upon arrival leads to a smoother installation process.