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:
Jan. 16, 2007
Filed:
Mar. 15, 2005
William R. Sturm, Tempe, AZ (US);
Joseph M. Sullivan, Gilbert, AZ (US);
Thomas J. Shortland, Tempe, AZ (US);
Kevin Hay, Fountain Hills, AZ (US);
Gregg C. Johnson, Peoria, AZ (US);
William R. Sturm, Tempe, AZ (US);
Joseph M. Sullivan, Gilbert, AZ (US);
Thomas J. Shortland, Tempe, AZ (US);
Kevin Hay, Fountain Hills, AZ (US);
Gregg C. Johnson, Peoria, AZ (US);
Other;
Abstract
Control circuitry is disclosed for use with a tankless water heater system including a plurality of water conduits connected in series. The control circuitry includes a plurality of water heater elements, one each associated with each of the plurality of water conduits. A controller includes a central processing unit (CPU) with an operating program and each of the plurality of water heater elements are coupled to the CPU. The CPU is programmed to individually activate one of the water heater elements to a predetermined power level in response to a demand for heated water. The number of water heater elements activated and the power level of the activation is determined by the demand for heated water.