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9.33.6.14.(4) | Application | Intent |
| OS1 | OP1 |
| Objective | OS1 Fire Safety |
| Attribution | |
| Application | Application 1: Noncombustible lining
for combustible 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 the ignition of combustible
return duct material in locations where burning or smouldering objects can
fall and remain in contact with the return ducts, which could lead to harm
to persons. |
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