Flue; Chimney Pot; Connection To The Chimney - La Nordica ROSA Manual Del Usuario

• Switch the cooker on with a moderate load of wood until the oven thermometer indicates 150 °C.
• Wait for 190 – 200 °C to be reached without additional wood being loaded.
• Load a single piece of wood weighing 500 - 600 g one at a time and wait for it to burn completely before adding another.
• This keeps the oven temperature stable around 190 – 200 °C.
• Place the tray of biscuits in the low position for 25-30 minutes (slow cooking) or in the medium position for 15-20 minutes (quick
cooking).
• Turn the tray halfway through cooking, if necessary.

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
or 6.25 dm (for example 25x25 cm) for appliances with a diameter of more than 200 mm.
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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.
ATTENTION: as far as concern the realisation of the flue connection and flammable materials please follow the requirements
provided by UNI 10683 standard. 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 (See chapter CONNECTING A FIREPLACE OR OPEN
HEARTH TO THE FLUE).

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
(Picture 2) .
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.

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,comply with all current Standards and Regulations and to those
envisioned by the law, and be hermetically secured to the flue. The internal diameter of the connection pipe must correspond to the
external diameter of the appliance flue gas exhaust stub pipe (DIN 1298).
ATTENTION: as far as concern the realisation of the flue connection and flammable materials please follow the requirements
provided by UNI 10683 standard. The flue must be properly spaced from any flammable materials or fuels through a proper
insulation or an air cavity. Minimum distance safety 25 cm.
IMPORTANT: the unused flue gas exhaust hole must be covered with its respective cap (See chapter: DIMENSIONS).
The chimney pressure (DRAUGHT) must be at least 10 12 Pa Pascal (=1.0 =1.2 mm of water column). The measurement must
always be carried out when the appliance is hot (nominal calorific power). When the pressure exceeds 17 Pascal, it is necessary to
Picture 1 shows some example solutions.
(for example 20x20 cm) for appliances whose pipe dimensions are less than 200 mm,
2
ENgLIsH
(Picture 3).
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