Method of field conversion of a heating system to a multiple stage modulating gas fired heat exchanger
US10712047B2 · kind B2 · utility
1Cited by
0References
6Claims
0Family size
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Key dates
| Filing date | Dec 21, 2015 |
| Grant date | Jul 14, 2020 |
| Priority date | — |
| Expiry date | Feb 16, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24H15/493
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A heating system retrofitted to be operable through multiple heat stages at a constant fuel-air mixture includes a tube heat exchanger having a plurality of burners, a combustion air blower (CAB) having an exhaust vent connected with the plurality of burners, the CAB operable at a first speed and a second speed, a first valve connecting a fuel source to a first subset of the plurality of burners, and a second valve connecting a fuel source to a second subset of the plurality of burners.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.