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9.32.3.11.(2)
ApplicationIntent
OH1OS2
ObjectiveOS2 Structural Safety
Attribution
[F52,F63-OS2.3]
Application
Application 1: 
Discharge of air from exhaust ducts, in self-contained heating-season mechanical ventilation systems serving single dwelling units with 5 or fewer bedrooms that are supplied with electrical power and a heating system, in buildings to which:
  • Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9], or
  • Part 6 applies [see Sentence 1.3.3.2.(1) of Division A for application of Part 6 and Sentence 6.2.2.1.(3)].
Exceptions: 
except as stated in Sentence 9.32.3.1.(1), which applies to heating-season mechanical ventilation systems designed to comply with CAN/CSA-F326-M.
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Intent
Intent 1: 
To limit the probability of failure to completely remove water vapour from buildings, which could lead to condensation, which could lead to the deterioration of building elements, which could lead to structural failure, which could lead to harm to persons.
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