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6.2.3.5.(1)
ApplicationIntent
OH1OH1OH1
ObjectiveOH1 Indoor Conditions
Attribution
(a) [F44,F81-OH1.2,OH1.3]
Application
Application 1: 
Drainage from and access to all low points in underground air ducts serving heating, ventilating and air-conditioning systems, in buildings to which Part 6 applies [see Sentence 1.3.3.2.(1) of Division A for application of Part 6].
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Intent
Intent 1: 
To limit the probability that inadequate drainage and access will lead to the accumulation of water in ducts, which could lead to:
  • excessive relative humidity, or
  • the accelerated deterioration of ducts.
This is to limit the probability of:
  • the inadequate control of indoor air temperatures or relative humidity, or
  • the entry of water into living space.
This is to limit the probability of:
  • the inadequate thermal comfort of persons, and
  • contact with moisture.
This is to limit the probability of harm to persons.
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