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9.32.3.6.(1) | Application | Intent |
OH1 | OS3 |
Objective | OS3 Safety in Use |
Attribution | |
Application | Application 1: Dwelling units that:
This applies to 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: In depressurization situations where air exhausting devices
operate without adequate replacement of indoor air with outdoor air, to limit
the probability of 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. Intent 2: [Subclause (b)(i)] To expand the application of Articles 9.33.6.13. and 9.33.6.14. to
exhaust-only ventilation systems. |
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