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9.32.3.5.(5) | Application | Intent |
OH1 | OS2 | OS3 |
Objective | OS2 Structural Safety |
Attribution | |
Application | Application 1: Outdoor air supply ducts installed
to provide outdoor air to self-contained heating-season mechanical ventilation
systems that are not coupled to forced air heating systems, serving single dwelling units with 5 or fewer bedrooms that are supplied
with electrical power and a heating system, in buildings to
which:
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 that the outdoor air supply flow
will exceed the normal operating exhaust capacity of the principal ventilation
fan, which could lead to excessive positive pressure within the dwelling unit,
which could lead to condensation within the building envelope, 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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