Connection To The Chimney; Chimney Cap Position - Nordica Fortuna Instructions Pour L'installation, L'utilisation Et L'entretien

A too small section causes a decrease of the draught. It is suggested a minimum height of 4 m. The following features
are FORBIDDEN and therefore they endanger the good operation of the device:
asbestos cement, galvanized steel, rough and porous internal surfaces. Picture 4 gives some examples of execution.
The minimum section must be 4 dm
devices whose duct diameter is lower than 200 mm or 6.25 dm
example 25 x 25 cm) for devices with diameter greater than 200 mm.
The draught created by the flue must be sufficient, but not excessive.
A too big flue section can feature a too big volume to be heated and
consequently cause difficulties in the operation of the device; to avoid
this, tube the flue along its whole height. A too small section causes a
decrease of the draught.
The flue must be properly spaced from any flammable materials or
fuels through a proper insulation or an air cavity. It is forbidden to let
plant piping or air feeding channels pass in the same flue. Moreover, it is
forbidden to create movable or fixed openings on the same for the
connection of further other devices.
6.

CONNECTION TO THE CHIMNEY

For safety reasons the door of the appliances with constructive system 1,
must be opened only for the loading of the fuel or for removing the ashes,
while during the operation and
remain closed.
The appliances with constructive system 2 must be connected to their
own flue. The operating with open door is allowed under supervision. The
connection pipe to the flue must be the shortest possible, right, tight and
according to the current regulations.
The connection to the chimney must be performed with stable and strong
pipes (we recommend a thickness of 2 mm). The pipe for smokes
exhaust must be fixed hermetically to the chimney. The diameter inside
the connection pipe must correspond to the external diameter of the
smokes exhaust small trunk of the stove. This is ensured by pipes according to DIN 1298.
ATTENTION: Eventual flammable pieces in the area of 20 cm round the connection pipes must be changed with
fireproof and not sensitive to heat materials.
For a good operation of the equipment it is essential that in the installation place it is introduced sufficient air for
combustion (see chapt. 10).
The depression on the chimney should be 12 Pa (= 1.2 mm of water column). The measurement must be done
always with the equipment hot (rating calorific value). When the depression exceeds 17 PA (1.7mm of water column)
it is necessary to reduce the same with the installation of an additional flue adjuster (butterfly valve) on the exhaust
pipe or in the chimney.
For safety reasons the door of the stove must be opened only for the loading of the fuel or for removing the ashes,
while during the operation and
During its operation we suggest you slowly rotate the stove FORTUNA. The rosette of the flue must be fixed
with nails or screws and the junction pipe must be fixed with a 90° bend, in order to avoid during the rotation
of the stove the detachment of the smoke pipe and a consequent danger of fire.
6.1.

CHIMNEY CAP POSITION

The draught of the flue depends also on the suitability of the chimney cap.
Therefore, if it is handicraft constructed, the output section must be more than twice as big as the internal section of
the flue. Should it be necessary to exceed the ridge of the roof, the chimney cap must assure the discharge also in
case of windy weather (Picture 5).
The chimney cap must meet the following requirements:
•
have internal section equivalent to that of the stack.
•
have a useful output section twice as big as the flue internal one.
•
be manufactured in such a way as to prevent the penetration of rain, snow, and any other foreign body in the
flue.
•
be easily checkable, for any possible maintenance and cleaning operation.
18
(for example 20 x 20 cm) for
2
the rest, the door of the hearth must
the rest, the door of the hearth must remain closed.
FORTUNA – FORTUNA Panorama
(for
(1)
2
(3)
(1) AISI 316 steel flue with double
chamber insulated with material resistant
to 400° C. Efficiency 100% excellent.
(2) Refractory flue with double insulated
chamber and
lightweight concrete. Efficiency 100%
excellent.
(3) Traditional clay flue square section
with cavities. Efficiency 80% excellent.
(4) Avoid flues with rectangular internal
section whose ratio differs from the
drawing. Efficiency 40% poor.
Picture 4
7197001 Rev.02 – EN
(2)
(4)
Max. A+1/2A
A+1/2A
A
external coating in