Palazzetti PIATTAFORMA T3, Руководство по установке и обслуживанию, Страница: 66 / 128

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If the rear wall of the appliance is an external wall, make a hole for the intake of combustion air at a height of about
20-30 cm from the ground, observing the dimensions on the technical data sheet in section “ Technical features” .
A non-closable permanent aeration grid must be placed externally; in areas that are particularly windy and exposed
to weathering, provide rain and wind protection.
Ensure that the air intake is positioned so that it won’t be accidentally obstructed.
If it is impossible to create an external air intake in the wall behind the appliance (non-perimeter wall), a hole must
be made in an external wall of the room where the appliance is positioned.
If it is not possible to create the fresh air intake in the room, an external hole can be created in an adjacent room
provided it is permanently interconnected by means of a transfer grille.
It is forbidden to take combustion air from garages, warehouses of combustible material or places with activities
at risk of fire.
If there are other heating or extraction appliances in the installation room, combustion mal-
functions may occur due to a lack of combustion air.
The combustion air intakes must therefore be sized correctly, in order to ensure the necessary
supply of air for the correct operation of all devices.
6.5 Flue gas fitting
The appliance works with the combustion chamber at negative pressure. It is therefore essential to make sure that
the flue gas evacuation is airtight (this is the responsibility of the installer).
The appliance must be connected to its own flue gas duct, not shared, and which is suitable for ensuring adequate
dispersion of the combustion products into the atmosphere, in accordance with the regulations in force in the
country of installation.
The components making up the flue gas ducting system must be declared suitable for the spe-
cific operating conditions and provided with CE marking.
It is mandatory to create a first vertical section measuring at least 1.5 meters to guarantee cor-
rect expulsion of the flue gases.
It is advisable to make a maximum of 3 direction changes, in addition to that resulting from the rear connection of
the appliance to the chimney, using 45 - 90 ° bends or Tee fittings ( Fig. 22 - Fig. 23 ).
Always use a Tee fitting with inspection cap at each horizontal and vertical change of the flue gas route ( Fig. 24
The horizontal sections must have a maximum length of 2-3 m with an upward slope of 3-5% ( Fig. 22 - Fig. 23 ).
Anchor the pipes with suitable collars to the wall.
The flue gas fitting MUST NOT BE connected:
• to a chimney used by other generators (boilers, stoves, fireplaces, etc. ...);
• to air extraction systems (hoods, vents etc. ...) even if “ducted”.
It is forbidden to install shut-off and draught valves.