[AIVC, Air infiltration and ventilation glossary, 1992]:extracted air which is re-supplied to a space. Recirculated air is normally blended with outside air and is reconditioned. [ASHRAE Standard 62.1]:air removed from a space and reused as supply air.(see air, recirculation) [ISO … Continue reading →

[EN 14511-1:2022, 3.49]:air from the air conditioned space entering the indoor heat exchanger.

[EN 16798-3:2017, 8]:airflow taken from a room and returned to the same room after any treatment. (SEC; colour Orange).NOTE Induced air in an induction unit is considered as secondary air. [EN 12792:2017, 319]:air prevailing in a treated space (coded yellow)