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9.32.3.12.(4) | Application | Intent |
OH1 | OS2 | OS3 |
Objective | OS3 Safety in Use |
Attribution | |
Application | Application 1: Start-up procedures recommended by manufacturers for
heat recovery ventilators, 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 inappropriate or incomplete
start-up procedures, which could lead to unbalanced airflow, inadequate airflow
or some other malfunction, which could lead to excessive negative pressure
in dwelling units, 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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