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9.32.3.10.(6) | Application | Intent |
OS3 | OH1 |
Objective | OH1 Indoor Conditions |
Attribution | |
Application | Application 1: Maximum sound ratings for fans installed to satisfy Articles 9.32.3.3., 9.32.3.4., 9.32.3.5., 9.32.3.6., 9.32.3.7. and 9.32.3.8., where
there is less than 1 m of duct between the fans and visible interior
surfaces of rooms. This applies to self-contained heating-season
mechanical ventilation systems serving single dwelling
units with 5 or fewer bedrooms that are supplied with electrical power
and a heating system, in buildings to which:
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Intent | Intent 1: To limit the probability that excessively noisy fans will
lead to occupants disabling or not using fans, which could lead to inadequate
ventilation, which could lead to negative effects on the air quality of indoor
spaces, which could lead to harm to persons. Intent 2: To exempt fans with less than 1 m of duct between
themselves and unfinished basements, furnace rooms, utility rooms or attics
from the sound ratings specified in Table 9.32.3.10.B., on the basis
that people do not normally occupy such areas for lengthy periods and would
therefore be unlikely to be disturbed by noisy fans. |
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