Heizungsvorrichtung und Verfahren zu deren Betrieb

摘要

The heating device has a burner (1) which can be operated in at least two load stage. The exhaust gas return device (9) can be controlled dependent on the load stage of the burner, so that the volume flow of the returned exhaust gas is reduced as the load stage of the burner is increase. It may be possible to modulate the burner in its load stages.