Hvac communication system

Details Hvac communication system Hvac communication system

H - Electricity

04

B

H04B 3/54 (2006.01) F24F 11/02 (2006.01) H04B 3/58 (2006.01)

Patent

CA 2693514

A system for communicating across conventional HVAC wiring is provided. The system includes a communication device having a communication module capable of including low power, high frequency current signals into a single control wire coupling such as a thermostat. The communication module includes a power supply module that draws power sufficient to operate the communication module from the existing HVAC wiring, so as to eliminate any need for batteries or external power sources. A second communication module may be coupled to the single control wire. The second communication module operates as a transceiver sending communication signals to, and receiving communication signals from, the communication module. In one embodiment, the communication module is disposed within a building, for example coupled to an electronic thermostat, while the second communication module is disposed outside the building near the compressor. The communication signals are RF modulated signals between 5 and 50 MHz.

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