6.8 Fireplaces, chimneys and flues

6.8.15 Oil – flue pipes

Flue pipes shall safely connect an appliance to a chimney.

Flue pipes should:

  • have a free area which is at least the same size as the outlet of the appliance
  • be vertical where possible, or no more than 45° from vertical; a horizontal section, less than 150mm long, may be used to connect a back outlet appliance to a flue.

Last updated: 2nd January 2024

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