| 摘要 |
PURPOSE:To eliminate the need for wiring of each individual device and to simplify a wiring by a method wherein a signal cable is commonly used by a remote control for a different device and a remote control for a hot water feeder, and control signals for the two devices are set so that they are prevented from interfering with each other. CONSTITUTION:An encoder 22 in a remote control 1 for a hot water feeder converts the control contents of a control switch 21 into a serial digital signal, and modulates a carrier f1 to feed it to a hot water feeder remote control signal cable 3. Similarly, an encoder 42 in a different device remote control 4 converts the content of a control switch 41 into a serial digital signal, and modulates a carrier f2 to feed it to the hot water feeder remote control signal cable 3. Resonance circuits 11 and 12 are mounted to the remote control input part of the hot water feeder 1, and since it is adapted to resonate with the carriers f2 and f1, only the carrier f1 is inputted to a decoder 13. A generated serial digital signal generated at an encoder 22 is decoded to control a control device 14 of the hot water feeder body 1. Similarly, a control device 94 of a different device 9 is controlled. |
