| 摘要 |
<p>PURPOSE:To improve the safety of the titled heater by inserting a flow water sensor into a passing water circuit and varying the temperature at an operating point of a control circuit according to presence or absence of passing water, in the titled heater including a temperature sensor for detecting heating member and its temperature. CONSTITUTION:A power source switch of the titled heater is turned ON, and a current is caused to flow to the heating member 11 within a heat exchanger unit 6 by turning a microswitch 8 ON by a pressure responding switch 7 upon passing water in a quantity more than a predetermined quantity to heat water. Further, when the temperature of water to be heated is raised abnormally, a control circuit part 17 detects it, and turns OFF a power leakage breaker 18 to stop the heating. Upon this occasion, in a case where the switch 8 is still ON sate even when the switches 7 and 8 are in trouble and the water passing quantity assumes a value lower than that at the time of the lowest water pressure used, the temperature of the operating point of a comparator 21 is varied by the turning ON of the flow water sensor 9 to evade the boiling of the water heater.</p> |
