Besides the setting of combustion air control valves, the chimney is a very important factor affecting the intensity of combustion
and thus the heating performance of your fireplace. Increased chimney blast needs smaller supply of combustion air, decreased
chimney blast requires larger supply of combustion air.
When using wooden logs, the supply of combustion air should be reduced at the beginning, until the wood gets completely burnt
through (little fire). If such a procedure causes very high heating performance, lower amount of fuel should be used.
Optimal control of combustion requires experience, especially when the chimney blast is not constant or the fuel wood used is of
changeable quality. When the chimney blast is too strong or when there is too much fuel in the hearth, there is danger of
overheating the paint of fireplace. The paint becomes silver-white and shortly starts to peel off the fireplace. The manufacturer
does not assume any responsibility for this kind of paint damage. You can repair this failure by fireplace paint (spray).
2.6 Between-seasons operation
When the outside temperatures reach above around 15°C, it can happen with low combustion performance, and in certain
conditions, that the chimney blast is endangered, not drawing the combustion gases completely away (smoke, combustion gases
smell). In such case, clean the grate and increase the supply of combustion air. Add smaller and smaller amounts of fuel and clean
the grate more often. Close the door and the valves of air supply of other devices connected to the same chimney, which are not in
use. Check the cleaning openings of the chimney for tightness.
2.7 Ash removing
To ensure failure-free operation it is necessary to remove the ash from the fireplace on time and regularly. The ash box must be
emptied in time to enable the combustion air flow through the grate. Otherwise, there is danger that ash under grate would prevent
air from flowing and the grate would get overheated and deformed due to the lack of cooling.
Ash must be removed from the fireplace before putting fuel inside.
2.8 Cleaning and maintenance
Depending on frequency of use, the fireplace must be cleaned once or more times per year (in cold state). Cleaning is executed as
follows:
Smoke tube is removed and cleaned outside in appropriate container. Accumulation area of combustion waste may be cleaned
using a steel brush and vacuum cleaner. Subsequently, the smoke tube must be reset between the chimney and the exhaust
throat of the fireplace.
NOTE: The fireplace can only be used again after cleaning when all parts removed for cleaning have been returned back.
The fireplace is covered on the outside with heatproof paint. When the paint hardens (after few hours at nominal thermal power), it
can be cleaned on surface using dry towel.
This heatproof paint is not resistant to humidity. Therefore do not put any wet objects on the fireplace, it could produce rust spots.
The glass in stoker door can be cleaned using a common glass cleaner, when only light sediment appears. Hard sediment can be
removed using a burning cleaner or with fine steel wool.
NOTE: the glass can have sharp edges; therefore use protective gloves when replacing the glass!
If the fireplace has not been used for a longer period, before starting to use it again it is necessary to check possible obstruction in
the fireplace, flue or chimney.
2.9 Problem sources and their solving
In case of failures (e.g. smoke) appearing during operation, contact your local competent chimney sweeper. If damage is caused
to the fireplace, contact the shop where you purchased the fireplace. These are the most common failures, their sources and
solutions.
