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9.33.6.2.(7) | Application | Intent |
| OH1 | OS2 |
| Objective | OH1 Indoor Conditions |
| Attribution | |
| Application | Application 1: Strength when wet and corrosion resistance of materials
used 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 the deterioration and collapse
of ducts, which could lead to reduced airflow, which could lead to an inadequate
delivery of air, which could lead to:
This is to limit the probability 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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