Intergas

  • Horizontal or Vertical no white showing. No boxing allowed.
  • All components must be accessible

Worcester Bosch

  • Horizontal or Vertical flues white is allowed show as long as joints are siliconed.

Vaillant

  • Horizontally flue white exposed is ok.  Vertical no white showing. Weather tight box with inspection hatch possibly ok.

Viessmann

  • White part of flue ok to be exposed as UV resistant. 300mm away from wall for vertical terminal. On vertical no white showing. 1m extension on vertical flue.

 

 

 

 

 

 

 

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