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.

Date of Patent:
May. 10, 2022

Filed:

Aug. 25, 2020
Applicant:

Rheem Manufacturing Company, Atlanta, GA (US);

Inventors:

Stephen Thurlkill, Oxnard, CA (US);

Jorge Miguel Gamboa Revilla, Oxnard, CA (US);

Assignee:

Rheem Manufacturing Company, Atlanta, GA (US);

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F24F 11/65 (2018.01); F24F 11/64 (2018.01); G05D 23/19 (2006.01); G05B 19/042 (2006.01); F24H 8/00 (2022.01); F24H 1/22 (2022.01);
U.S. Cl.
CPC ...
F24F 11/65 (2018.01); F24F 11/64 (2018.01); G05B 19/042 (2013.01); G05D 23/1917 (2013.01); F24H 1/22 (2013.01); F24H 8/00 (2013.01); G05B 2219/2614 (2013.01);
Abstract

The disclosed technology includes a controller for a cascade boiler system having both condensing and non-condensing boilers. The controller can receive supply water temperature data and return water temperature data to determine a current temperature differential in the system. The controller can determine a current load demand value using the current temperature differential and a set point temperature. If the current load demand value is less than or equal to a first load demand threshold, the controller can output a control signal for a condensing boiler to transition to a heating mode. If the current load demand value is greater than a second load demand threshold, the controller can output a control signal for a non-condensing boiler to transition to a heating mode.


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