Memory recovery scheme and data structure in a heating, ventilation and air conditioning network
AssigneeLennox Industries Inc.
InventorWojciech Grohman
Life of this patent
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Abstract
A method for updating a parameter in a device in an HVAC network includes, in one embodiment, sending, by an interface to the device, 1) a parameter value change message, and 2) a new value of an installer parameter. The device determines if the new value is within an allowed range. The parameter is updated with the new value in a memory of the device if the parameter update is within the allowed range. The device sends the parameter to the interface. The parameter is relayed by the interface to an active subnet controller of the HVAC network.
Claims20
A method for updating a parameter in a device in an HVAC network, comprising:
- sending, by an interface to said device:
- a) a parameter value change message, and
- b) a new value of an installer parameter;
- determining by said device if said new value is within an allowed range;
- updating said parameter with said new value in a memory of said device if said parameter update is within said allowed range;
- sending, by said device, said updated parameter to said interface;
- and
- relaying, by said interface, said updated parameter to an active subnet controller of said HVAC network.
An HVAC system, comprising:
- a first device;
- an interface, coupled to said first device, that can send to said first device:
- a) a parameter value change message, and
- b) an updated installer parameter,
- wherein said first device can:
- a) store said updated parameter in a memory of said first device if said updated parameter is within an allowed range, and
- b) send said updated parameter to said interface;
- and
- an active subnet controller configured to receive said updated parameter from said interface.
An HVAC system, comprising:
- a first device;
- an interface, coupled to said first device, that can send to said first device:
- a) a parameter value change message, and
- b) an updated installer parameter,
- wherein said first device can:
- a) store said updated parameter in a memory of said first device if said updated parameter is within an allowed range, and
- b) send said updated parameter to said interface;
- and
- an active subnet controller, coupled to said interface, configured to receive said updated parameter from said interface,
- wherein said updated parameter is received via the Internet.
Dependencies are inferred from the claim text.