Kratki FRANEK 10, Manual, Page: 14 / 24

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5. Commissioning and operation of a fireplace insert
5.1. General comments;
Fireplace inserts are designed for burning wood with a moisture content of 20% and lignite briqu-
ettes. The use of coal, coke, coal derivatives, plastics, garbage, rags and other flammable substances
is prohibited. Conditionally, it is permitted to burn certified wood briquettes made from sawdust or
pellets. Practical evaluation of the humidity of wood fuel used is as follows. Wood which is to have
moisture content in the range of 18-20% must be seasoned for a period of 18-24 months or be sub-
ject to drying. With the reduction of moisture in the wood, the calorific value increases, which means
cost savings - up to 40% of the total mass of wood needed for one heating season. Using wood with
too high moisture content, excessive consumption of energy needed to evaporate the moisture may
be needed and condensate may be created in the flue or the combustion chamber, resulting in nega-
tive impact on space heating. Another phenomenon observed with the use of wood with too great
moisture content is the phenomenon of the formation of creosote - sludge (steam from wet wood
and soot) being destructive to chimneys, which can cause inflammation and fire of the chimney.
5.2. Starting the fireplace;
Before trimming the fireplace, conduct a few test ignitions, during which you should check the opera-
tion of the moving parts of the insert. Newly installed fireplaces must be operated with the power of
approx. 40% of the nominal power in the first two weeks of use, with the temperature gradually incre-
ased. This way of the use of the insert enables gradual removal of internal stress, thereby preventing
thermal shocks. It has a very large impact on subsequent insert parts durability and the durability of
the ceramic Acumotte linings. During the first few startups, the insert can emit the scent of enamel,
silicone sealant and other materials used to perform the installation. This is a normal phenomenon
which disappears after a few cycles.
Note: Do not use the fireplace insert when it is not trimmed, except for the test firings.
5.3 Operating the fireplace;
Note: During all activities related to maintenance and operation of the insert, remember that
the steel parts of the insert may have high temperatures and therefore protective gloves
should be used.
Firing
In order to start a fire in the fireplace insert, open the insert door using the handle, place the kindling
(dry paper, sawdust or other approved fireplace kindling types are recommended), lay shredded
wood on it and then wood logs. We do not recommend the use of synthetic firelighters because they
contain chemicals which can give off specific odours. Then, set the air intake to the fireplace in the
fully open position (the regulator is below the insert door), ignite the kindling, wait until the kindling
is burning. close the front door of the fireplace.
Note: It is forbidden to use other materials than those provided in the instructions. Do not use
flammable chemical products to ignite, such as oil, gasoline, solvents and others.