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9.32.3.13.(10) | Application | Intent |
| OH1 | OS3 |
| Objective | OS3 Safety in Use |
| Attribution | |
| Application | Application 1: Screens, grilles and filters installed on air intake
and exhaust openings, 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 that screens or grilles on air
intake or exhaust openings will become blocked due to lack of maintenance,
which could lead to excessive negative pressure (where supply fans alone are
restricted), 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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