Warning This information has been archived because it is outdated and no longer relevant.

Archived Content

Information identified as archived on the Web is for reference, research or recordkeeping purposes. It has not been altered or updated after the date of archiving. Web pages that are archived on the Web are not subject to the Government of Canada Web Standards. As per the Communications Policy of the Government of Canada, you can request alternate formats on the "Contact Us" page.

9.33.4.4.(1)
ApplicationIntent
OH1OS3OS2
ObjectiveOH1 Indoor Conditions
Attribution
[F20-OH1.1,OH1.2]
Application
Application 1: 
Allowance for expansion and contraction of heat-transfer fluid and control of system pressure, in heating and cooling systems using heat-transfer fluid and serving only one dwelling unit, in buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9].
Top of Page
Intent
Intent 1: 
To limit the probability of excessive pressure, which could lead to damage to system components, which could lead to an inability to maintain adequate indoor air temperatures, which could lead to condensation.
This is to limit the probability of:
  • the inadequate control of relative humidity,
  • the generation of pollutants from:
    • harmful micro-organisms and the media they grow on,
    • biological growth, or
    • materials that become unstable on wetting, or
  • the deterioration of building elements.
This is to limit the probability of:
  • negative effects on the air quality of indoor spaces, or
  • the inadequate thermal comfort of persons.
This is to limit the probability of harm to persons.
Top of Page