| 摘要 |
There is provided a boiler capable of preventing occurrence of a trouble accompanying transition cancel while enabling the transition cancel between combustion stages, in the boiler that controls a combustion amount in multiple combustion stages. The boiler according to the present invention includes an air supply device capable of varying a supply amount of combustion air, a fuel supply device capable of varying a supply amount of fuel, and control means for controlling the air supply device and the fuel supply device so as to obtain the supply amounts in accordance with respective combustion stages in order to realize the multiple combustion stages, wherein the control means controls the air supply device and the fuel supply device so as to return to a predetermined combustion stage when a request for transition cancel is received during transition from the predetermined combustion stage to another combustion stage, and controls so as not to perform the transition to the other combustion stage until a recancel prohibition period has elapsed.
|
