| 摘要 |
<p>The boiler heating system has a temp. control preventing increase of temp. above a certain value. The boiler circuit temp. is monitored to ensure correct working temp. without interfering with the firing system, esp. in solid fuel boilers. In the vicinity of the boiler is arranged a temp. sensor. When the reference temp. is exceeded then the sensor operates a valve (5) by an actuating system (9). This valve allows escape of some hot water into the overflow. The sensor operates at the same time as the pipe separator (10) which allows flow of cold water from the supply mains until the temp. sensor reaches the lowermost temp.</p> |
