ANSI/ASHRAE 62.1-2016 Ventilation for Acceptable Indoor Air Quality (PDF Download)

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Referenced in the 2018 IMC. Major Scope Changes and More in Standard 62.1-2016

First published in 1973 as Standard 62, Standard 62.1 specifies minimum ventilation rates and other measures for new and existing buildings that are intended to provide indoor air quality that is acceptable to human occupants and that minimizes adverse health effects.

Whereas changes to the 2013 edition of the standard primarily focused on usability and clarity, the 2016 edition includes a major change to the scope of the standard by which residential occupancies are moved from Standard 62.1 to Standard 62.2. Dwelling units are now addressed in Standard 62.2, regardless of building height, while common areas are addressed by Standard 62.1. Other changes to the 2016 edition include the following:

  • A revised definition of "environmental tobacco smoke" (ETS) to include emissions from electronic smoking devices and the smoking of cannabis
  • Revised operations and maintenance requirements to better align Standard 62.1 with the requirements in ASHRAE/ACCA Standard 180-2012
  • New requirements to the Indoor Air Quality Procedure for determining minimum ventilation rates by considering the combined effects of multiple contaminants of concern on individual organ systems
  • A change to allow ventilation to be reduced to zero through the use of occupancy sensors for spaces of selected occupancy types
  • Changes related to demand control ventilation to make clear that the standard is intended to be used for calculations for code review and also for physical operation

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