ARCHIVED - 9.33.6.5.(2)

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9.33.6.5.(2)


Objective	OH1 Indoor Conditions
Attribution	[F20,F63-OH1.1] [F20,F51,F52-OH1.2]
Application	Application 1: Design of fittings for ducts, in air duct distribution systems serving heating systems in which the rated heat input does not exceed 120 kW and serving only one dwelling unit, in buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9]. Application 2: This also applies to ventilation ducts and their fittings, as stated in Sentence 9.32.3.11.(1).
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Intent	Intent 1: To limit the probability that the performance of fittings for ducts will fall significantly below expectations, which could lead to the dislodgement or failure of ducts, which could lead to: an inability to maintain the minimum indoor air temperatures [see Sentence 9.33.3.1.(1)], which could lead to condensation, an inadequate delivery of warm air or return of cold air, or inadequate ventilation. This is to limit the probability of: the inadequate control of temperatures, airborne pollutants or relative humidity, or inadequate combustion air for fuel-burning appliances. This is to limit the probability of: the generation of pollutants from biological growth or from materials that become unstable on wetting, the deterioration of building elements, or incomplete combustion. This is to limit the probability of: negative effects on the air quality of indoor spaces, or the inadequate thermal comfort of persons. This is to limit the probability of harm to persons.
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