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9.32.3.4.(7) | Application | Intent |
OH1 | OS3 |
Objective | OH1 Indoor Conditions |
Attribution | |
Application | Application 1: Connection of outdoor air supply
ducts that are:
This applies to outdoor air supply
ducts in self-contained heating-season mechanical ventilation systems
coupled to forced air heating 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 the full negative pressure
in the return air plenum will not be available to draw in outdoor air, which
could lead to the inadequate replacement of indoor air with 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.
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