Sentence 9.32.3.7.(3)

Intent 1:

To limit the probability of the inadequate removal of vapours and pollutants produced by cooking.

This is to limit the probability of the inadequate control of:

• airborne pollutants and vapours, or
• relative humidity, which could lead to condensation, which could lead to the generation of pollutants from biological growth or from materials that become unstable on wetting.

This is to limit the probability of negative effects on the air quality of indoor spaces, which could lead to harm to persons.

Intent 2:

To exempt certain installations from the requirement to install a supplemental exhaust fan in the kitchen as stated in Sentence 9.32.3.7.(1), on the basis that the significantly higher exhaust rate of the principal ventilation fan is likely to adequately remove vapours and pollutants produced by cooking.