Description
The Retrotec FN500 "A" ring is a specific accessory designed to optimize the performance of the 4000, 5000 and 6000 series tightness test fans. This component allows to adjust the air flow and pressure developed by the fan when using different opening configurations, ensuring accurate readings and regulatory compliance during blower door tests.
By installing the "Range A" ring, the technician improves the repeatability of the test and reduces possible deviations caused by the fan configuration, contributing to a more reliable and professional measurement.
Ref.FN500