Flue; Chimney Pot; Connection To The Chimney; Connecting A Fireplace Or Open Hearth To The Flue - LA NORDICA TermoRossella Plus DSA Instructions Pour L'installation, L'utilisation Et L'entretien

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TERMOROSSELLA PLUS DSA / FORNO DSA – TERMONICOLETTA DSA / FORNO DSA
obstruct the primary air entry. Through the primary air the fire is also kept alive.
During wood combustion, the register of primary air must be opened only for a while, because otherwise the wood burns fast and the
stove may overheat. For the correct arrangement (see paragraph 8.1).
B - SECONDARY air register
Over the door of the hearth there is the secondary air control
be moved to the right), especially for wood combustion, so that un-burnt carbon does not undergo a post-combustion. See chapter 10.
Through this register it is possible to adjust the power of the stove.
Leaving it slightly open, according to the flue of the chimney, it is possible to keep the glass clean.

5. FLUE

Essential requirements for correct appliance operation:
• the internal section must preferably be circular;
• the appliance must be thermally insulated and impermeable and built with suitable materials which are resistant to heat, combustion
products and any condensation;
• there must be no narrowing and vertical passages with deviations must not be greater than 45°;
• if already used, it must be clean;
• the technical data from the instruction manual must be respected;
If the flues are of a square or rectangular section, the internal edges must be rounded with a radius of not less than 20 mm.
For the rectangular section, the maximum ratio between the sides must be ≤ 1.5.
A section which is too small causes a reduction in draught. A minimum height of 4 m is advisable.
The following materials are FORBIDDEN and compromise the good operation of the appliance: asbestos cement, galvanised steel, rough
and porous internal surfaces.
The minimum section must be 4 dm
dm
(for example 25x25 cm) for appliances with a diameter of more than 200 mm.
2
The draught created by your flue must be sufficient but not excessive.
A section of the flue which is too large can present a volume which is too large to heat and therefore cause operating difficulties for the
appliance; to avoid this, it is necessary to intubate the appliance for its entire height. A section which is too small causes a reduction in
draught.
The flue must be at a suitably distance from flammable or combustible material using suitable insulation or an air space.
It is FORBIDDEN to pass system piping or air ducts inside the flue. It is also forbidden to create moveable or fixed openings on the flue
itself, for the connection of further different appliances.

5.1. CHIMNEY POT

The flue draught depends on the suitability of the chimney pot
It is therefore essential that, if built in a handcrafted way, the exit section is more than twice the internal section of the flue.
As it must always go past the ridge of the roof, the chimney pot must ensure exhaust even in the presence of wind.
The chimney pot must meet the following requirements:
• have an internal section equivalent to that of the chimney.
• have a useful exit section of double the internal section of the flue.
• be built so as to prevent rain, snow or any foreign body entering the flue.
• be easy to inspect, for any maintenance and cleaning operations.

5.2. CONNECTION TO THE CHIMNEY

Products with automatic door closing (type 1) must operate, for safety reasons, with the furnace door closed (except during the fuel loading
or ash removal phases).
Products with non-automatic door closing (type 2) must be connected to their own flue.
Operation with doors open is only allowed when supervised.
The connection pipe to the flue must be as short as possible, straight horizontal and positioned slightly in ascent, and watertight.
Connection must be carried out with stable and robust pipes (we recommend a thickness of 2 mm) and be hermetically secured to the flue.
The internal diameter of the connection pipe must correspond to the external diameter of the cooker flue gas exhaust stub pipe (DIN 1298).
CAUTION: if the connection passes particular compounds of flammable material, in the radius of 20cm around the pipe, all flammable
material must be replaced by fireproof, heat resistant materials.
For correct appliance operation, it is essential that sufficient air for combustion is introduced into the place of installation (see paragraph 6).
The chimney pressure (DRAUGHT) must be at least 17-20 Pascal (=1.7-2 mm of water column). The measurement must always be
carried out when the appliance is hot (nominal calorific power). When the pressure exceeds 20 Pascal (2 mm of water column), it is
necessary to reduce it through the installation of an additional draught regulator (false air valve) on the exhaust pipe or in the chimney.

5.3. CONNECTING A FIREPLACE OR OPEN HEARTH TO THE FLUE

The flue gas channel is the stretch of piping which connects the thermo-product to the flue. In the connection, these simple but extremely
7197100 - IT - EN - DE - FR
Picture 1 at page 53
shows some example solutions.
(for example 20x20 cm) for appliances whose pipe dimensions are less than 200 mm, or 6.25
2
(Picture 5 at page 55
- 2A).This regulator must be open (the lever must
(Picture 2 at page 53 -Picture 3 at page
54).
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