| 摘要 |
<p>The control system is partic. intended for already mounted central heating arrangements, as it does not require laying of new pipe lines. It consists of external temperature sensor and/or a remote control appts., possibly with room temperature sensor which is coupled to the boiler control system. Between the external sensor with remote control appts., and the boiler or heating circuit, is incorporated the existing electric installation for control signal transmission. On the external sensor and remote control apparatus side is connected in front of the installation input, an A/D frequency modulated converter. On the boiler or heating circuit control side is connected a frequency modulated D/A converter, matching known electronic circuit. The control circuit has pref. a transmitter consisting of a multiplexer (2), a A/D converter (3), as status circuit (4), two modems (5, 6) and a matching circuit (7) with a control logic (8).</p> |
