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Non-insulated fumes outlets are potential sources
of danger.
The openings for comburent air and for ventilating
the room must comply with technical standards.
It is forbidden to obstruct or reduce the size of the
ventilation openings in the room.
7.
FUMES OUTLET AND COMBURENT
AIR INTAKE (Quadra ie FF m)
Refer to standards and laws in force for evacuation of
combustion products.
A centrifuge fan located inside the combustion chamber
evacuates combustion products and it is constantly
controlled by a pressure switch to make sure it works
properly.
CONCENTRIC OUTLETS (Ø 60-100)
The boiler is supplied complete with a place for
connecting up the coaxial exhaust/suction ducts and
with the opening for air inlet (M) closed – (fig. 8).
The coaxial flue ducts can be turned in any direction
best suited to room requirements, keeping to maximum
lengths given in the table.
See instructions given in the kit for installation.
Fig. 8 shows the reference quotas for marking out the
Ø 105 mm opening through the wall with respect to the
boiler supporting plate.
A flange will have to be inserted depending on the length
of the flue duct used, selecting it from amongst those
in the boiler (see table given here below).
24 ie FF m
Max. linear length of
Fumes flange
concentric ducts (m)
(L)
up to 0,85
ø 42
from 0,85 to 2
ø 44
from 2 to 3
ø 46
from 3 to 4,25 (*)
not installed
(*) 3.30 for C22 type systems
Fig. 7
Fig. 8
28 ie FF m
Load losses
Max. linear length of
on each bent (m)
concentric ducts (m)
45°
90°
0,5
0,85
from 2,70 to 3,40 (*)
(*) 3.40 for C22 type systems
7
L
M
M
180 (24 ie FF m)
205 (28 ie FF m)
Fumes flange
(L)
up to 0,85
ø 45
from 0,85 to 1,70
ø 47
from 1,70 to 2,70
ø 49
not installed
180 (24 ie FF m)
205 (28 ie FF m)
Load losses
on each bent (m)
45°
90°
0,5
0,85
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