scope:

This document specifies laboratory methods for testing externally and internally mounted air transfer devices operating under pressure differences.

This document applies to air transfer devices of the following types:

- air transfer devices with fixed opening(s);

- air transfer devices with manually adjustable opening(s);

- air transfer devices with pressure difference controlled opening(s);

- window openings specifically designed to act as an air transfer device.

This document describes tests intended to characterize the following:

- flow rate/pressure;

- equivalent area

- reverse flow ability;

- air tightness when closed;

- free area;

- air diffusion in the occupied zone;

- sound insulation;

- water tightness.

This document does not apply to evaluation of:

- air filtration;

- condensation risk;

- noise production.