Open fireplace – A fire is kindled on a non-flammable surface. The exhaust gases are rising, they accumulate in the collective collector and are discharged to the chimney, which in turn must pull them out. An open fireplace places particularly high demands on the chimney. They are a prerequisite for providing the fireplace with a fresh air opening and an individual chimney. Its thrust must be that great, that it does not allow the free propagation of exhaust gases in the living room. Please note, that under different weather conditions and wind flow directions, the negative pressure in the chimney changes. It may happen, that the wind will force the flue gas into the chimney and then into the living room, and the presence of exhaust fumes in it means the danger of poisoning!
Therefore, when building an open fireplace, consultation with a stove fitter is particularly important. He can correctly calculate the interaction of the chimney, open fireplace and incoming air.