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Idiomas disponibles
INSTALLATION
a
If there are other heating or extraction devices inside
the room, the air vents must guarantee a sufficient
amount of air for properly operating all the devices,
in accordance with the regulations in force and the
manufacturer's indications.
Only sealed appliances (e.g. C-type gas appliances,
■
according to the UNI 7129 standard) or appliances
that do not cause a lower pressure compared with
the external environment can pre-exist or be in-
stalled in the place where the appliance is installed.
5.5
FUME EXHAUST
l
The fume exhaust is an important function for the
product's efficient operation. It must be made by
qualified personnel and in accordance with the reg-
ulations in force, with regard to both its dimensions
and the materials used to build it.
a
The product works with the combustion chamber in
negative pressure and the fume exhaust under pres-
sure; it is essential that the fume exhaust duct is her-
metically sealed.
For example purposes, we list below the main parts making it up; for
detailed information on the various possible solutions, consult the
successive chapters.
6
1
Chimney
2
Flue
3
Connection to the flue
4
Flue gas channel
5
Inspection for soot collection
6
External air intake
CS.SB80.IST_EN_Rev. 2.0_09-23
1
3
2
4
5
Fig. 5
Listed below are the characteristics for creating a suitable outlet for
discharging fumes.
E
A
d
Measurement
Value
A
mm
≥ 500
B
mm
≤ 2000
C
%
≥ 5
d
mm
See appliance technical sheet
D
mm
≥ d
E
-
Inspection cap
H
mm
Useful height of flue ≥ 3000
In making the flue gas channel, the following indications MUST be
observed:
- the flue must have a minimum cross-section with a diameter equal
to or larger than the appliance's fume exhaust as specified in the
chapter
"Technical
Specifications"
- it is mandatory to have an initial vertical section of at least 1,5 m
to ensure proper fume exhaustion
- it must go upwards, after the vertical section, for the entire remain-
ing part, with a minimum gradient of 5%, the sub-horizontal section
must not be longer than
1/4
or flue, and nonetheless must not be longer than 2000 mm
- make no more than 4 direction changes, besides the one deriving
from the rear connection of the appliance to the flue, using elbows
with 45 ÷ 90° angle or tee fittings
- always use a tee fitting with inspection cap at each horizontal or
vertical variation in the fume exhaust path
- if they are not self-supporting, anchor the pipes with appropriate
collars to the wall, so that their weight does not interfere with the
proper exhaustion of the combustion fumes
- the pipes must guarantee tightness to smoke by means of appro-
priate seals that can withstand the temperature of the outgoing
fumes, as specified in the chapter
nonetheless capable of withstanding at least 250°C
- the pipes must have a double wall (thermally insulated) or be
suitably insulated with rock wool. The maximum temperature of the
flue pipe inside the room must not exceed 70°C.
D
H
E
of the effective height H of the chimney
"Technical
Specifications", and
EN
Fig. 6
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