Continuous flow internal flueing guide: 11748-E 05-15
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5
Flueing guidelines
Flue gases can reach temperatures up to 200 °C. The flue terminal is to
terminate in a location so as not to cause a nuisance, in accordance with
AS/NZS 5601.
Flue support
Ensure the flue is supported independently
of the appliance by use of suitable clips or
brackets, in accordance with AS/NZS 5601.
Appropriate standoff brackets are supplied
with each FFSSROOFCOWL and FFSSPIPE1000.
Flue length
The chart below highlights the maximum flue
length and number of bends.
Vertical terminations.
To ensure products of combustion are cleared,
adequate clearance from the building is
required.
The flue cowl should have a 500 mm clearance
from any part of the building. This also applies
to steeped and pitched roofs, which should be
clear of the ridge line.
Lesser clearances may provide perfectly
adequate flue systems depending on the
installation. Minimum clearances are shown in
AS/NZS 5601.
Multiple flues
Ensure minimum distances, as shown below
are maintained.
Each terminal is to be terminated at the same
vertical height, refer images below—please
note these images show our older style
terminals, which have since been updated.
Number of 90
°
Bends
0
1
2
3
4
Flue L
ength (m)
1
2
3
4
5
6
7
9
11
13
15
Max. flue length
Older style roof cowls all
terminating at the same
height
Older style horizontal
terminals all terminating
at the same height
FFSSROOFCOWL
FFSSKIT
A
A:
HDi200
350 mm
A:
EFi250
470 mm
A
A
A
M
in. cle
ar
ance 500 mm
