COMBUSTION CONTROLLER OF GAS COMBUSTION APPARATUS

PURPOSE:To offer a combustion controller of a combustion apparatus in which generation of combustion vibration is eliminated or restrained even when the operating number of burners is increased. CONSTITUTION:A combustion controller of a gas combustion apparatus which at least includes two or more burners 2 and 3, a fan 5 that supplies combustion air, a gas pressure regulator 7 that regulates the pressure of combustion gas, a burner operating number changeover device 8 that changes the operating number of the burners 2 and 3, and a controller 13 that controls the actions of devices in the combustion apparatus. When the operating number of the burners is increased, the controller 13 starts first temporary reducing action of the rotating speed of the fan 5 and the gas pressure by the gas pressure regulator 7, and makes the burner operating number changeover device 8 operate with a little delay after the reducing action is started.