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6.2.1.8.(2)
ApplicationIntent
OS3
ObjectiveOS3 Safety in Use
Attribution
[F31-OS3.1]
Application
Application 1: 
Guarding of mechanical equipment that forms part of heating, ventilating, air-conditioning or refrigeration systems, in buildings described in Sentence 1.3.3.2.(1) of Division A.
Application 2: 
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),
  • the ventilation of all occupancies other than residential occupancies, as stated in Sentence 9.32.1.1.(2),
  • heating systems, including requirements for combustion air, and air-conditioning systems other than those serving individual dwelling units, as stated in Sentence 9.33.1.1.(2), and
  • air duct distribution systems serving heating systems in which the rated heat input exceeds 120 kW, as stated in Sentence 9.33.6.1.(2).
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Intent
Intent 1: 
To limit the probability of inadvertent contact with moving components, hot surfaces or other elements of mechanical equipment, which could lead to harm to persons.
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