channels.
There must be continuity between the smoke channel and the ue
so that the ue does not lean on the generator. The smoke channels
must not cross rooms where the installation of the combustion
appliances is not allowed.
The mounting of the smoke channels must be carried out in order
to guarantee smoke seal for the appliance functioning conditions,
limit the forming of condensate and avoid it being transported
towards the appliance.
The mounting of horizontal routes must be avoided.
For appliances where ceiling or wall non-coaxial discharges with
respect to the appliance combustion product outlet have to be
reached, the direction changes will have to realised using open
bends not greater than 45° (see gures below).
For the heat generator appliances equipped with electric fan for
expelling combustion products, the instructions below must be
followed:
gure 8
Insulating
product
gure 9
Flue
Inspection
The horizontal routes will have to have a minimum upward
slope of 3%
The length of the horizontal route must be minimal and,
however, not longer than 3 metres
The number of direction changes including the one for eect
of using the "T" element must not be more than 4 (if 4 bends
are used, use double wall piping with an internal diameter of 120
mm).
In any case, the smoke channels must seal the combustion and
condensate products and be insulated if they pass outside the
installation room.
The use of counterslope elements is forbidden.
The smoke channel must allow the recovery of soot or be
brushable.
The smoke channel must have constant section. Any section
changes are only allowed at the ue coupling.
It is forbidden to have other air supply channels and pipes for
plant engineering, especially if over-sized, transit inside the smoke
channels. The mounting of manual draught adjustment devices on
forced draught appliances is forbidden.
CHIMNEY OR INDIVIDUAL FLUE10.3.2.
The chimney or individual ue must respond to the following
requisites:
seal the combustion products, be waterproof and adequately
insulated in line with the use conditions;
be realised with materials which resist the normal mechanical
stress, heat, action of the combustion products and any
condensate;
have mainly vertical progress with deviations from the axis
not greater than 45°;
be adequately distanced from fuel or ammable materials
through air space or opportune insulation;
have preferably circular internal section: the square or
rectangular sections must have round corners with a radius not
lower than 20 mm;
have constant internal section, free and independent;
have rectangular section with max. ratio between the sides
of 1.5.
It is recommended that the smoke pipe be equipped with a
collection chamber for solid materials and any condensate situated
under the smoke channel inlet, so that it can be easily opened and
inspected from airtight door.
DISTANCES RECOMMENDED FOR 10.3.3.
BOILER COMPARTMENT
Below nd images relative to the measurements that the company
recommends are respected.
For the “Lucrezia idro” model, respect the measurements for Lp14.
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