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9.33.6.14.(6) | Application | Intent |
OH1 | OS2 |
Objective | OH1 Indoor Conditions |
Attribution | |
Application | Application 1: Maximum number of openings in vertical return
ducts, in air duct distribution systems serving heating systems in
which the rated heat input does not exceed 120 kW and serving
only one dwelling unit, in buildings to
which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application
of Part 9]. |
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Intent | Intent 1: To limit the probability of connecting return ducts to rooms
on multiple floor levels with different stack pressures, which could lead
to an inadequate flow of return air from upper-level rooms, which could lead
to an inability to regulate the flow of warm air to rooms, which could lead
to:
This is to limit the probability of:
This is to limit the probability of:
This is to limit the probability of:
This is to limit the probability of harm to persons.
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