System and method for zoning a distributed-architecture heating, ventilation and air conditioning network
First Claim
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1. A heating ventilation and air conditioning (HVAC) data processing and communication network subnet controller, comprising:
- a physical layer interface configured to couple to a data bus of an HVAC data processing and communications network; and
a local controller configured to cooperate with said physical layer interface to publish messages to said data bus to operate a first HVAC demand unit in a first zone and a second HVAC demand unit in a second zone, wherein said first zone is configured to condition a first space located within an enclosed space and said second zone is configured to condition a second space located within said enclosed space that is different than said first space;
wherein said subnet controller is configured to;
control operation of said first HVAC demand unit and said second HVAC demand unit in response to said subnet controller being designated as active and a second subnet controller being designated as inactive; and
control operation of said first HVAC demand unit, but not control operation of said second HVAC demand unit, in response to said subnet controller and said second subnet controller both being designated as active.
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Abstract
The disclosure provides an HVAC data processing and communication network. In an embodiment, the network includes a first zone and a second zone. The first zone has a first demand unit and a first subnet controller configured to control an operation of the first demand unit via a data bus. The second zone has a second demand unit and a second subnet controller configured to control an operation of the second demand unit via the data bus. The second subnet controller is further configured to communicate with the first subnet controller via the data bus.
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5 Claims
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1. A heating ventilation and air conditioning (HVAC) data processing and communication network subnet controller, comprising:
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a physical layer interface configured to couple to a data bus of an HVAC data processing and communications network; and a local controller configured to cooperate with said physical layer interface to publish messages to said data bus to operate a first HVAC demand unit in a first zone and a second HVAC demand unit in a second zone, wherein said first zone is configured to condition a first space located within an enclosed space and said second zone is configured to condition a second space located within said enclosed space that is different than said first space; wherein said subnet controller is configured to; control operation of said first HVAC demand unit and said second HVAC demand unit in response to said subnet controller being designated as active and a second subnet controller being designated as inactive; and control operation of said first HVAC demand unit, but not control operation of said second HVAC demand unit, in response to said subnet controller and said second subnet controller both being designated as active. - View Dependent Claims (2, 3, 4, 5)
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Specification