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9.33.6.10.(1) | Application | Intent |
| OH1 | OS2 |
| Objective | OS2 Structural Safety |
| Attribution |
[F63-OS2.3]
Applies to branch supply ducts that
are not fitted with diffusers with adjustable balance stops.
|
| Application | Application 1: Dampers for branch supply ducts that
are not fitted with diffusers with adjustable balance stops, 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]. Application 2: This also applies to ventilation ducts and their fittings,
as stated in Sentence 9.32.3.11.(1). |
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| Intent | Intent 1: To limit the probability of an inability to adjust, or to
properly adjust, the airflow from individual ducts, or an inability to balance
the flow among the ducts, which could lead to an inability to maintain the
minimum indoor air temperatures [see Sentence 9.33.3.1.(1)], which could
lead to condensation, which could lead to deterioration, which could lead
to compromised structural integrity of environmental separators or elements
protected by such separators, which could lead to harm to persons.
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