| 摘要 |
An operation control circuit for a home boiler includes a room switch, a low water level sensing section, a signal receiving sect. and a main control sect. The room switch comprises a ratch circuit for selecting a function among four functions, a transforming switch, and a comparing circuit connected with a thermister and a termperature setting dial to its anode and cathode therminals respectively. The low water level sensing sect. includes a comparing circuit to compare the output of a sensor and the output of a static voltage circuit and to generate a signal to stop the operation. This controller gives a home boiler automatic heating functions for the times of dwelling, sleeping and outing.
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