Patent ID: 7500453
Filing Date: 2009-03-10
Classification: F23N,F24D,G05D

Abstract:
1. Boiler control unit for controlling a heating device in a boiler, comprising a delayed cycle controller for activating and deactivating said heating device, wherein said delayed cycle controller is operated by a thermal relay, providing a temperature responsive signal which is switched on when the temperature in the boiler underpasses a lower temperature level and switched off when the temperature in the boiler exceeds a higher temperature level, and wherein said delayed cycle controller is arranged to determine the cooling time (□ to determine a delay as a certain percentage of said cooling time (□ to deactivate the heating device essentially at the point of time when the thermal relay signal is switched off, and to activate the heating device at a point of time (□ said boiler control unit further comprising an input of a signal from a temperature sensor which is arranged to measure the boiler outlet temperature, said percentage being dynamically variable, dependent on the signal from said temperature sensor.