Basic concepts

Chimney flap

The chimney flap (damper) can be a part of a fireplace stove / insert, or it can be installed on a flue gas duct. The chimney flap serves to regulate the draft of the chimney and thus to regulate the combustion itself. It is recommended to have a chimney flap on all fireplace stoves and inserts. In case of a higher chimney draught you can effectively regulate the combustion. If the flap is open, it doesn't block anything and doesn't impact the chimney draught and the function of fireplace stove / insert in any way.

External air supply

External air supply is in short the supply of air into the stove / insert from outside. It is always necessary to supply enough air for combustion - lack of air can cause problems with combustion and in extreme cases can also endanger health. The need for an external air supply arises especially in passive houses, where the degree of sealing is such that in the room where the device is located there is not enough air exchange and thus the device does not have enough oxygen to burn properly. In addition, the external air supply is used where there is a functional hood inside the room, which will cause a vacuum when switched on, which may cause burning problems in the stove / insert. It is better to leave the realization of the external air supply to the professionals, so that the air supply is properly dimensioned and realized. External air supply can be taken from well-ventilated areas, such as cellar, etc., or connected to the exterior.

Primary air supply

It is the basic air supply supplied under the firebox grate. This air is mainly used to ignite the fire. This air supply should be closed under ideal burning conditions, then the secondary air supply is used to regulate the combustion.

Secondary air supply

Secondary air supply is a "back-up" air that is used to convert emission particles to burn, resulting in higher efficiency and lower the PM emissions. This air is supplied to the combustion chamber through the openings in the upper part of the firebox and is also used to clean the glass. The secondary air supply is used to regulate the stove output and is an essential part of all modern fireplace stoves / inserts.

Convection heating

Convection heating is in short heating with convection (double-wall) stoves and the principle of heating is in the air flow. This flow occurs between the walls where the air is heated and it flows out warm on top. Its advantage lies in the greater circulation of warm air in the room and the rapid heating of the room after the fire in the stove / insert is heated.

Cooling loop

The cooling loop is used for fireplace stoves / inserts with a heat exchanger. Its function is to protect the system against overheating, eg. in the event of a power blackout. Using a thermostatic safety valve, cold water is admitted into this loop (which is not dependent on electricity), which in the case of temperature increase in the exchanger cools the water in it through the heat exchange surface of the loop itself to avoid possible damage to the heater and heating circuit. This cooling loop is part of all our products with a heat exchanger.

Hot-water exchanger

The hot-water exchanger is used in fireplace stoves and fireplace inserts for heating of water. Fireplace stoves and inserts with a heat exchanger can be connected to a hot water system for heating, or with its help, to heat the accumulation tank. When determining the required heat exchanger performance, it is necessary to consult it with a heating engineer / designer who will propose the required heat exchanger performance based on a particular hot water system. It is not possible to heat in the fireplace stove / insert when the exchanger is not impregnated and connected to the hot water system. The connection of fireplace stoves and inserts with a heat exchanger should always be carried out by a professional company.

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