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Communication protocol system and method for a distributed-architecture heating, ventilation and air conditioning network

  • US 8,560,125 B2
  • Filed: 10/21/2009
  • Issued: 10/15/2013
  • Est. Priority Date: 10/27/2008
  • Status: Active Grant
First Claim
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1. An HVAC data processing and communication network, comprising:

  • a first subnet comprising a first demand unit, a first comfort sensor and a first subnet controller; and

    a second subnet comprising a second demand unit, a second comfort sensor and a second subnet controller, the second subnet controller being configured to control an operation of said first subnet;

    wherein said first subnet is configured to be wired as a star network, the central node of said star network being said first demand unit having direct connections to said first comfort sensor and said first subnet controller over a data bus.

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