PURPOSE: To eliminate the mis-control preventive measure in a control circuit and improve the igniting performance by a method wherein a continuous discharging ignitor is fixed on the boiler body part of a heat exchanger for a bath heater, and the length of a high electric voltage lead wire is shortened.
CONSTITUTION: A continuous discharging ignitor 13 is located at the lower part of a heat exchanger 15 for a bath heater, connected to an electric control part 11 with a lead wire 12, and connected to an electrode 18 of a pilot burner 17 with a high voltage lead wire 14. The continuous discharging ignitor 13 is located at a boiler body low temperature part 25 of a heat exchanger 21 for a bath heater. The location of the ignitor 13 is always at the inlet side, accordingly, the temperature of the ignitor 13 is low, consequently, the abnormal condition of the continuous discharging ignitor 13 caused by the burning can be prevented. The loss of energy (electric voltage) generated in the continuous discharging ignitor and the generation of noise signal can be prevented due to the short length of the high voltage lead wire, thereby, the stabilized igniting control can be performed.
SUGIMOTO WATARU
ONO ITARU
