| 摘要 |
<p>PURPOSE:To reduce the size and the number of components, by changing over each data obtained from a sample hot water measurement means, a residual hot water volume arithmetic operation means, and an operation suspended days judging means with a display change over means, and indicating said date with numerical indication light emitting diode. CONSTITUTION:A residual hot water volume arithmetic operation means 25 calculates the quantity of residual hot water in a hot water storage tank 1 based on Vz=V-Vw from the measurement result of a water supply measurement means 24 where Vz stands for residual quantity of hot water, Vw for quantity of supply water, hot water storage tank capacity for V. An indication means 27 indicates the result measured by a sample hot water temperature means 26, the result calculated by the residual hot water quantity arithmetic operation means 25, and the result decided by an operation suspended days decision means 8. An indication changeover means 28 indicates or changeover data about hot water, residual quantity of hot water or operation suspended days to an indication means. The input side of transistor arrays 37 and 38 are connected with an output circuit 36 of a microcomputer 30 while the output side is connected with the indication means 27. A light emitting diode 40 indicates numerical data while a light emitting diode 41a stands for hot water temperature, 41b for residual quantity of hot water and 41c for operation suspended days respectively as illustrated above.</p> |
