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9.32.3.11.(12) | Application | Intent |
OH1 | OS3 |
Objective | OS3 Safety in Use |
Attribution | |
Application | Application 1: Sizing of rectangular duct used in place of round
duct, 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:
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 negative pressure,
which could lead to the spillage of carbon monoxide gas from fuel-burning
appliances that are susceptible to spillage, which could lead to the acute
poisoning or asphyxiation of persons. |
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