Kratki LUCY 12 Mode D'emploi Et Garantie page 17

at the same time, hot air cannot be distributed to a large number of rooms. if the distance from the
stack exceeds 3 meters, hot air is not able to overcome flow resistance and fails to reach the outlet,
or its speed is so low that the gravitational circulation system turns out to be insufficient.
The advantage of this system is that it does not require considerable outlays in order to be installed,
however, high temperature with a lack of proper filtration may cause pyrolysis (dust decomposition),
a phenomenon that is detrimental to health, which is why this system is more seldom used and not
recommended.
Forced hot air distribution system
The forced circulation system requires an air-blowing device, a turbine to suck hot air heated by the
fireplace insert and to pump it to all branches of the system. This is why a pipe of a maximum diam-
eter and a minimum length is used to join the insert stack with the air-blowing device.
To install a fad system, the following are necessary:
• ducts, adapters, reducers, distributors, filters, in general made of galvanised sheet;
• fireplace grilles or diffusers;
• insulated flexible conduits, characterised by a minimum resistance of 250°C (completely non-
flammable);
• air-blowing device, e.g. a turbine.
all of the above mentioned items can be found in our offer.
The installation of a distribution of hot air system should be carried out by a specialized company
that can correctly design connections and the arrangement of particular elements. before installing
the fireplace insert and the distribution of hot air system, it is necessary to determine the heat de-
mand of the space that is going to be heated and the required fittings. forced air systems undoubt-
edly provide more opportunities than gravitational ones, but at the cost of a complicated installation
and operating expenses on the energy consumed by the turbine. However, these are compensated
for by economising on the bills for regular heating.
Remember: a fireplace is most efficient when supplied with an appropriate amount of air, particu-
larly from the outside. Hence, when buying a fireplace insert, it is advisable to have it equipped with
an outside air inlet and a flue microprocessor controller. With these accessories installed, the fire-
place does not consume air from the inside of the building and economically burns wood, providing
a saving of up 30% in a heating season.
5. The use of the fireplace insert
5.1. General information
The fireplace insert is designed to burn wood of a dampness of up to 20% and brown coal briquette.
it is forbidden to use coal, coke, coal-related products, plastics, rubbish, rags, or other flammable
substances.
conditionally, it is permissible to burn small amounts of approved wood briquette made from saw-
dust or pellets. in practice, the dampness of fuel is evaluated as follows. Wood intended to contain
18-20% of dampness must be seasoned for 18-24 months or dried in appropriate facilities.
as dampness of wood decreases, its heating value and savings increase because the amount of
wood needed can be reduced by even 40% by weight in a heating season. When wood of a too large
a level of dampness is used for burning purposes, an excess of energy may be used, necessary for
evaporating the dampness, leading to the formation of condensation in the stack or the combustion
chamber - a consequence that has an adverse effect on the heating of a room. another negative
phenomenon accompanying the use of damp wood is the emission of creosote, a sediment that
damages the chimney flue and in extreme cases may cause ignition and a fire in the chimney.
in view of that, it is advisable to use broad-leaved wood, such as oak, beech, hornbeam, and birch.
coniferous wood is characterised by a lower heating value, and considerably soots up the pane when
burnt.
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