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6.2.3.3.(1)
ApplicationIntent
OH1OS3
ObjectiveOH1 Indoor Conditions
Attribution
[F81-OH1.1,OH1.2]
Application
Application 1: 
Connections and openings in ducts in air duct distribution systems serving heating, ventilating and air-conditioning systems, in buildings to which Part 6 applies [see Sentence 1.3.3.2.(1) of Division A for application of Part 6].
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Intent
Intent 1: 
To limit the probability that loose connections or unnecessary openings will lead to excessive air leakage, which could lead to:
  • the inadequate delivery of warm air or the return of cold air, which could lead to:
    • an inability to maintain adequate indoor air temperatures, or
    • the inadequate control of:
      • relative humidity or indoor air temperatures, or
      • surface temperatures, or
  • inadequate ventilation, which could lead to the inadequate control of:
    • relative humidity, which could lead to condensation, which could lead to mould and mildew growth,
    • airborne pollutants, or
    • indoor air temperatures.
This is to limit the probability of:
  • negative effects on the air quality of indoor spaces, and
  • the inadequate thermal comfort of persons.
This is to limit the probability of harm to persons.
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