Vertical and Horizontal Flue Terminal Positioning
All Intergas boilers use a concentric flue arrangement consisting of a 60mm diameter inner flue and a 100mm diameter outer inlet duct and are available in both vertical and horizontal arrangements.
Horizontal Flue System
The 60/100mm horizontal flue system may be extended to a maximum of length of 10 meters however, for every 45º bend used, the flue length should be reduced by 1 meter. For every 90º bend used, the flue length should be reduced by 1.5 metres.
All horizontal flues must be installed with a
back towards the boiler. For example, for every 1000mm of flue, there
should be a fall of 50mm and must be supported by a minimum of 1 bracket per
1000mm, ideally positioned just before the joint.
N.B. All the flue joints should be accessible for inspection via a flue inspection hatch.
Vertical Flue System
A vertical 60/100mm flue system is also available, which can be extended to a maximum of length of 10 metres. Again, this distance should be reduced if using 45º and 90º bends similar to the horizontal system.
The above diagram illustrates many typical flueing options, including parts required. These are for illustration purposes only. Please consult your installer or Intergas stockist for more bespoke applications.