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9.21.4.9.(1) | Application | Intent |
| OH1 | OP1 | OS2 | OS3 | OS1 |
| Objective | OH1 Indoor Conditions |
| Attribution | |
| Application | Application 1: Separation of flue liners
in the same rectangular chimney of brick masonry
or concrete, which is not more than 12 m in height and serves
fireplaces or appliances having a combined total
rated heat output of 120 kW or less, 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 rectangular masonry
or concrete chimneys, in buildings to which
Part 6 applies [see Sentence 1.3.3.2.(1) of Division A for application
of Part 6], as stated in Sentence 6.3.1.2.(1). |
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| Intent | Intent 1: To limit the probability that condensate or corrosive gases
from a failed flue liner will lead to the failure of an adjacent flue that
serves another appliance, which could lead to backdrafting of combustion products
into living space, which could lead to negative effects on the air quality
of indoor spaces, which could lead to harm to persons. |
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