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Connection to the flue pipe
The flue pipe must have internal dimensions not
larger than 20x20 cm, or diameter 20 cm. In the
event of larger dimensions, or of the flue pipe
being in poor condition ( for example cracks, poor
insulation, etc.), it is advisable to fit a stainless
steel pipe of suitable diameter inside the flue pipe
throughout its length, right up to the top. Check
with suitable instruments that the draught is as
shown in the table. This type of connection ensures
the evacuation of the fumes even in the event of
a temporary power cut. At the bottom of the flue
pipe, provide an inspection cap to allow periodic
checking and cleaning, which must be done
annually. Make a gas-tight connection to the flue
pipe, using pipes and connectors as recommended
by us. You must ensure that a windproof cowl
should be fitted which complies with the standards
in force.
Connection to an external flue with insulated
or double-wall pipe
The only type of pipe which is permissible is insulated
(double-walled) stainless steel, smooth on the
inside, fixed to the wall. Flexible stainless steel pipe
must not be used. At the bottom of the flue pipe,
provide an inspection cap to allow periodic checking
and cleaning, which must be done annually. Make
a gas-tight connection to the flue pipe, using pipes
and connectors as recommended by us. You must
ensure that a windproof cowl should be fitted which
complies with the standards in force.
Check with suitable instruments that the draught is
as shown in the table.
Connection to the flue pipe
For proper functioning, the connecting pipe between
the Boiler and the chimney or flue duct must have a
slope of not less than 3% in the horizontal stretches,
the length of which must not exceed 2 metres and
the vertical distance between one tee connector
and another (change of direction) must not be less
than 1,5 m. Check with suitable instruments that
the draught is as shown in the table. At the botton
of the flue pipe, provide an inspection cap to allow
periodic checking and cleaning, which must be done
annually. Make a gas-tight connection to the flue
pipe, using pipes and connectors as recommended
by us.
Fig. 2: connection to the
flue pipe.
Min.
150 cm
2
Fig. 3: connection to an
external flue with insulated
or double-wall pipe.
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