Sentence 6.3.2.8.(2)

Intent 1:

To limit the probability that exhaust systems will operate without the introduction of make-up air, which could lead to the depressurization of occupied space from which air is being exhausted, which could lead to:

• a reduction in exhaust air volume, which could lead to inadequate ventilation, or
• the entry of combustion products from fuel-fired appliances into the building.

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