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6.2.3.13.(2)
ApplicationIntent
OS3OH1
ObjectiveOH1 Indoor Conditions
Attribution
[F81,F43-OH1.1]
Application
Application 1: 
Installation of electrostatic-type filters, in heating, ventilating and air-conditioning systems, for air duct systems, in buildings described in Sentence 1.3.3.2.(1) of Division A.
Application 2: 
This also applies to buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9], with respect to:
  • mechanical ventilating systems other than self-contained systems serving single dwelling units, as stated in Sentence 9.32.1.2.(2),
  • the ventilation of storage garages for more than 4 motor vehicles in residential occupancies, as stated in Sentence 9.32.1.1.(3),
  • the ventilation of all occupancies other than residential occupancies, as stated in Sentence 9.32.1.1.(2),
  • heating systems, including requirements for combustion air, and air-conditioning systems other than those serving individual dwelling units, as stated in Sentence 9.33.1.1.(2), and
  • air duct distribution systems serving heating systems in which the rated heat input exceeds 120 kW, as stated in Sentence 9.33.6.1.(2).
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Intent
Intent 1: 
To limit the probability that electrostatic filters will remain energized after air flow has been stopped, which could lead to an electric discharge, which could lead to the creation of ozone gas, which could lead to negative effects on the air quality of indoor spaces, which could lead to harm to persons.
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