The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 21, 2017
Filed:
Aug. 07, 2014
Lennox Industries Inc., Richardson, TX (US);
Wojciech Grohman, Little Elm, TX (US);
Lennox Industries Inc., Richardson, TX (US);
Abstract
In one aspect, the disclosure provides an HVAC system. In one embodiment, the HVAC system includes: (1) an air handler configured to condition and circulate air for the HVAC system, and (2) an air handler controller for the HVAC system configured to control operation of the air handler, the air handler controller including interface circuitry having a predetermined coupling impedance and configured to couple the air handler controller to components of the HVAC system via a communications network of the HVAC system, wherein a total of the predetermined coupling impedance and an end node coupling impedance at each of the components is substantially a defined maximum loading impedance for the communications network and wherein the end node coupling impedance of one of said plurality of end nodes is determined based on said predetermined coupling impedance and end node coupling impedances of remaining ones of the plurality of end nodes.