6.2.3.8.(3)ATTRIBUTION:
Functional Statement:
F81
To minimize the risk of malfunction, interference, damage, tampering, lack of use or misuse.
Objective:
OH1.1
APPLICATION:
Provision for the removal of condensation, where it
might be a problem, in the exhaust ducts of ventilating systems, in buildings described in Sentence
1.3.3.2.(1) of Division A.
This also applies to buildings to which Part 9 applies [see Sentence
1.3.3.3.(1) of Division A for application
of Part 9], with respect to:
- mechanical ventilating systems other than self-contained systems serving single dwelling units, as stated in Sentence 9.32.1.2.(2),
- the ventilation of storage garages for more than 4 motor vehicles in residential occupancies, as stated in Sentence 9.32.1.1.(3), and
- the ventilation of all occupancies other than residential occupancies, as stated in Sentence 9.32.1.1.(2).
INTENT:
To limit the probability that condensation will accumulate
in exhaust ducts, which could lead to:
- the blockage of ducts by ice buildup when temperatures are below the freezing point, which could lead to inadequate ventilation, or
- the growth of mould and mildew in ducts.
This is to limit the probability of negative
effects on the air quality of indoor spaces, which could lead to harm to persons.
ATTRIBUTION:
Functional Statement:
F81
To minimize the risk of malfunction, interference, damage, tampering, lack of use or misuse.
Objective:
OH1.2
APPLICATION:
Provision for the removal of condensation, where it
might be a problem, in the exhaust ducts of ventilating systems, in buildings described in Sentence
1.3.3.2.(1) of Division A.
This also applies to buildings to which Part 9 applies [see Sentence
1.3.3.3.(1) of Division A for application
of Part 9], with respect to:
- mechanical ventilating systems other than self-contained systems serving single dwelling units, as stated in Sentence 9.32.1.2.(2),
- the ventilation of storage garages for more than 4 motor vehicles in residential occupancies, as stated in Sentence 9.32.1.1.(3), and
- the ventilation of all occupancies other than residential occupancies, as stated in Sentence 9.32.1.1.(2).
INTENT:
To limit the probability that:
- condensation will accumulate in exhaust ducts when temperatures are above the freezing point, or
- accumulated condensation will freeze in exhaust ducts when temperatures are below the freezing point, which could lead to the buildup of ice in the ducts, which could lead to ducts being blocked, which could lead to inadequate ventilation.
This is to limit the probability of the inadequate
control of relative humidity or indoor air temperatures, which could lead
to the inadequate thermal comfort of persons, which could lead to harm to
persons.