Plume management terminal positioning
Note
All measurements are the minimum clearances required
Terminals must be positioned so to avoid combustion products entering the building
Support the flue at approximately one metre intervals and at a change of direction, use suitable brackets and fittings
Key to illustration
600mm distance to a boundary or surface facing a boundary, unless it will cause a nuisance. BS 5440: Part 1 recommends that care is taken when siting terminals in relation to boundaries
Internal/external corners. The air intake clearance can be reduced to 150mm providing the flue exhaust outlet has a 300mm clearance
The flue cannot be lower than 1,000mm from the top of the light well due to the build up of combustion products
1,200mm between air intake and facing terminal
Clearance no less than 200mm from the lowest point of the balcony or overhang
Installations in car ports are not recommended
1,200mm from an opening in a car port on the same wall i.e door or window leading into dwelling
Using a Plume Management Kit the air intake measurement can be reduced to 150mm providing the flue exhaust outlet has 300mm clearance. Plume kits running horizontally must have a 10ยบ fall back to the boiler for proper disposal of condensate. For details on specific lengths see relevant boiler Technical and Specification information
This feature allows some basic plume re-direction options on a standard telescopic horizontal flue terminal. 300mm minimum clearances to a opening e.g window. However the minimum clearance to an opening in direction that the plume management is facing, must be increased to 1,500mm. Where the flue is less than 150mm to a drain pipe and plume re-direction is used the deflector should not be directed towards the drainpipe
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