| 摘要 |
PURPOSE:To reduce the amounts of nitrogen oxide and carbon monoxide contained by combustion exhaustion in a combustion control method of a hot water supplier. CONSTITUTION:A Bunsen gas burner 1, a first heat exchanger 51 disposed in the flames 2, 2 produced by the gas burner 1, and a second heat exchanger 52 disposed in a combustion, exhaust passage 57 located downstream the first heat exchanger 51, are provided. Combustion operation is performed while cooling the flames 2, 2 to about 1150 deg.C-1300 deg.C by contact of the first heat exchanger 51. |
