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9.32.3.4.(6) | Application | Intent |
OH1 | OS3 | OS2 |
Objective | OS2 Structural Safety |
Attribution | |
Application | Application 1: Flow-regulating dampers in outdoor air supply
ducts installed between the furnace and the
outdoors in self-contained heating-season mechanical ventilation systems 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 of 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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