F22B13/00—Steam boilers of fire-box type, i.e. boilers where both combustion chambers and subsequent flues or fire tubes are arranged within the boiler body
F22B13/005—Steam boilers of fire-box type, i.e. boilers where both combustion chambers and subsequent flues or fire tubes are arranged within the boiler body with flues, other than fire tubes
Procédé pour faire circuler l'eau dans les corps de chauffe d'une installation de chauffage central monotubulaire et installation pour la mise en oeuvre du procédé