6.2.3.8.(10)ATTRIBUTION:
Functional Statement:
F81
To minimize the risk of malfunction, interference, damage, tampering, lack of use or misuse.
F44
To limit the spread of hazardous substances beyond their point of release.
Objective:
OH1.1
APPLICATION:
Connection or interconnection of two or more exhaust
ventilation systems, in buildings to which Part 6 applies [see Sentence
1.3.3.2.(1) of Division A for application of
Part 6], that serve rooms containing water closets, urinals, basins, showers
or slop sinks, or rooms containing residential cooking equipment, and where:
- the connections are made at the inlet of an exhaust fan, and all interconnected systems are equipped with suitable back pressure devices to prevent passage of odours from one system to another when the fan is not in operation, or
- exhaust ducts discharge to a shaft that is served by an exhaust fan.
INTENT:
To limit the probability that the interconnection or connection
of exhaust ducts or shafts serving various areas of buildings will lead to
the transfer of exhaust air containing grease or moisture to other parts of
buildings, which could lead to the contamination of other spaces, which could
lead to negative effects on the air quality of indoor spaces, which could
lead to harm to persons.
To exempt certain exhaust systems from the application of Sentences 6.2.3.8.(8) and 6.2.3.8.(9), where safeguards are provided to avoid cross-contamination between the contents
of various ducts.