ANSI/AMCA Standard 280-26 | Test Methods for Wind Resistance and Impact Resistance for Fans and Ventilators

1. Purpose
To establish uniform methods for laboratory testing of wind resistance and missile debris impact resistance of non-embedded fans and ventilators whose failure would compromise the integrity of the building envelope.

2. Scope
Tests conducted in accordance with this standard are intended to demonstrate the capability of a fan, powered ventilator, or unpowered ventilator mounted externally to a building to withstand wind pressure (lateral and/or uplift), missile impact(s), or both. The test methodology, pass/fail criteria, and functional criteria are defined. The wind pressure test methodology in this standard is intended to demonstrate a fan or ventilator’s ability to sufficiently retain its structural integrity, functionality, and maintain integrity of the building envelope. The missile debris impact test methodology in this standard is intended to demonstrate a fan or ventilator’s ability to maintain structural integrity of its housing and components attached to it.