With the pipe bend included in the kit, the
maximum length of the piping should not
exceed 3 m.
2.7.2 Positioning the
outlet terminals
The outlet terminals for forced-draught
appliances may be located in the external
perimeter walls of the building.
To provide some indications of possible solu-
tions, Table 1 gives the minimum distances
to be observed, with reference to the type
of building shown in fig. 8.
2.7.3 Coaxial duct outlet on the roof
The roof discharge terminal L. 1284 cannot
be shortened and when positioning the tile,
the minimum distance from the discharge
head terminal must not be less than 600
mm (fig. 9).
The accessories to be used for this type of
installation and some of the connecting
systems that may be adopted are illustra-
ted in fig. 10.
It is possible to insert up to a maximum of
three extensions and reach a maximum
rectilinear distance of 3.7 m.
Should it be necessary to make two chan-
ges of direction in the pipe development,
the maximum length of the pipe must not
exceed 2 m.
75
LEGENDA
1 Telha com articulação
2 Painel de chumbo
3Aro
4 Parafuso de bloqueio
Fig. 9
Fig. 8
TABLE 1
Siting of terminal Appliances from 7 to 35 kW
(distances in mm)
A - below openable window 600
B - below ventilation opening 600
C - below eaves 300
D - below balcony (1) 300
E - from adjacent window 400
F - from adjacent ventilation opening 600
G - from horizontal or vertical soil or drain pipes (2) 300
H - from corner of building 300
I - from recess in building 300
L - from ground level or other treadable surface 2500
M - between two terminals set vertically 1500
N - between two terminals set horizontally 1000
O - from a surface facing without
openings or terminals 2000
P - as above but with openings and terminals 3000
1)
Terminals below a practicable balcony must be located in such a way
that the total path of the smoke from its outlet point from the termi-
nal to its outlet point from the external perimeter of the balcony,
including the height of possible railings, is not less than 2000 mm.
2) When siting terminals, where materials that may be subject to
the action of the combustion products are present in the vicinity,
e.g., eaves, gutters and downspouts painted or made of plastic
material, projecting timberwork, etc., distances of not less than
1500 mm must be adopted, unless adequate shielding is provi-
ded to guard these materials.
KEY
1a-b Coaxial duct kit L. 935 code 8084805
2a Extension L. 1000 code 8096100
2b Extension L. 500 code 8096101
3 Vertical extension L. 200
with take-off point code 8086908
4 Supplementaty 90° elbow code 8095800
Fig. 7
IMPORTANT:
– Each additional 90° curve installed reduces the
available length by 0.90 metres.
– Each additional 45° curve installed reduces the
available length by 0.45 metres.
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