LOW LEVEL FLUES
Low level flues installed installed in a corridor/alley - if the
space is less than 3m, a plume kit must be considered.
Where there is high risk of funnelling winds. Should the
walls either side of the alley be high, again, a plume kit
should be considered.
Low level flues installed installed in open area/garden
- avoid facing the flue into the prevailing wind. The flue
should face away from prevailing winds.
Please refer to site location sketches for outline of points
above.A boiler that fails to operate correctly may require
a plume kit. This is because the flue gases are not able to
disperse, causing the photocell to become dirty.
3
3.4 STANDARDS & REGULATIONS - VENTILATION & COMBUSTION AIR REQUIREMENTS
ITEMS TO BE CHECKED IN ALL CASES
WHERE A BOILER IS OF CONCERN
There are four checks that must always be made where a
photocell has stopped a burner:
1. Ensure that the gasket door is sealed correctly to the
boiler.
2. Ensure that the burner collar is in place. If you see that
the burner collar and surrounding area is getting black,
this is highlighting that the boiler is experiencing down
draught and requires resecuring.
3. A common fault can be that the installer has not placed
the receiving nut for the burner on the boiler. If this nut
is missing, then the burner sits incorrectly on the boiler.
4. Ensure the flue is attached securely to the boiler, all
seals are in place and telescopic flues are not extended
beyond the maximum length.
DIA
DIA
DIA
DIA
45˚ Bend
1000mm Length
Oset length
3 lip black seal
3 lip black seal
3 lip black seal
3 lip black seal
Cowl
Wire Mesh
Existing
Condensing
kit terminal
Remove Tapered Section
and insert 3 lip black seal
Wall Bracket
Plume Dispersal Kit for indoor boiler low level flue
Alley
<3m
Low Level & Heatpac in corridor/alley
Plume installed for <3m
Flue facing away from
prevailing wind
Prevailing
Wind
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