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9.32.3.6.(3) | Application | Intent |
OH1 |
Objective | OH1 Indoor Conditions |
Attribution | |
Application | Application 1: Interlocking of the forced air distribution system's
circulation fan with the principal ventilation fan, in exhaust-only ventilation
systems in 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: To limit the probability of the inadequate distribution
of outdoor air. This is to limit the probability of the
inadequate control of:
This is to limit the probability of negative effects on the air
quality of indoor spaces, which could lead to harm to persons.
Intent 2: To exempt the principal ventilation fan from being interlocked
with the circulation fans to comply with Sentence 9.32.3.6.(2), in circumstances
where the forced air distribution system is equipped with controls that automatically
activate the circulation fan at selected intervals, on the basis that the
circulation fan will be activated to distribute outdoor air within the dwelling
unit whether or not the principal ventilation fan is operating.
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