Kratki ARKE Serie Manual Del Usuario página 16

- The manufacturer recommends using logs of such deciduous trees as beech, hornbeam, oak, alder,
birch, ash, etc. of a length of approx. 30 cm and approx. 30 cm to 50 cm in circumference, and lignite
briquettes.
- the moisture content of the wood used for firing should not exceed 20%, which is in the case of wood
seasoned 2 years after felling, under shelter.
Fuel not recommended
You should avoid logs or split logs with a moisture content exceeding 20%, as this may result in a fail-
ure to achieve the declared technical performance - reduced thermal efficiency. It is not recommended
to use firing logs of coniferous and gopher wood which cause heavy smoke in the device and the need
to clean the device and the chimney duct more frequently.
Fuel forbidden
Fuel for the inserts cannot include: minerals (e.g. coal), tropical wood, (e.g. mahogany), chemical prod-
ucts or liquids, such as oil, alcohol, benzene, naphthalene, laminated boards, impregnated or com-
pressed pieces of wood with glue, garbage. If other fuels are allowed, such information will be placed
on the nameplate.
HOUSING OF THE FIREPLACE INSERT:
The housing should allow access of air required for ventilation and air circulation in the housing by
applying grilles selected according to the insert power (in the lower part of the envelope - under the
insert) and an outlet grille (at the top of the envelope - over the insert).
Selection of grilles
Intake and outlet grilles: In the lower part of the trim of a fireplace insert, provided a hole (s) to supply
air required for heating air intake (bottom ventilation grilles). To ensure proper exhaust of hot air from
the hood, provide exhaust holes in it with ventilation grilles - air outlet (upper ventilation grilles). Holes
finished off with grilles of cross-sections depending on the insert power, from 40 to 60 cm
of the fireplace insert.
Note: Because of the high temperatures in the housing of the insert, the grilles in the hood and
the air distribution crowning the system in the house have to be metal. Only grilles without
blinds are allowed in the fireplace hood.
Effective area of the grilles: The recommended effective area of the inlet / outlet grilles for fireplace
inserts (steel or cast iron) to 10 kW, it is the air intake (lower ventilation grilles) / the air outlet (upper
ventilation grilles) cm
it is the air intake (lower ventilation grilles) / the air outlet (upper ventilation grilles) cm
(effective area of the grille or all of the grates), and for inserts over 15 kW, it is the air intake (lower
ventilation grilles) / the outlet air (upper ventilation grilles) cm
area of the grille or all of the grilles).
Decompression grilles: Very high temperatures are recorded inside the hood, therefore, inside the
hood, approx. 40 cm from the ceiling of the room, a decompression shelf should be fitted i.e. a ceiling
over the insert. It prevents heating of the ceiling of the room, heat losses and forces the installation
of proper exhaust grilles under it to emit exhaust heat from the chamber above the fireplace. Grilles
(decompression ones) are mounted on both sides of the housing on opposite sides, e.g. alternately
higher and lower than the decompression shelf. They allow for intensive air flow
circulation that cools the ceiling surface. The size of the grilles - their effective area is not important.
MOUNTING AND INSTALLATION OF A FIREPLACE INSERT
Installing a fireplace insert should be performed by a person with licenses for performing this type of
16
≥ 500 cm (effective area of the grille or all of the grilles) for inserts to 15 kW,
2 2
≥ 800 - 1200 cm or more (effective
2 2
per 1 kW
2
≥ 700 cm
2 2