1. OH1
  2. OS3


OH1 Indoor Conditions



Intent 1:

To limit the probability of:

  • a reduction in exhaust air volume, which could lead to inadequate ventilation, or
  • the depressurization of occupied space from which air is being exhausted, which could lead to 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.

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