Water heater and boiler processes
US11549681B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Apr 29, 2020 |
| Grant date | Jan 10, 2023 |
| Priority date | — |
| Expiry date | Jun 11, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23N2241/10
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A pre-startup control method for a boiler or water heater includes: providing a controller operatively coupled to a boiler or water heater unit; performing a unit shutdown operation; enabling a pre-start up mode; at about a same time or in any order, moving an air fuel valve by a controller to a non-off position with a gas supply to the water heater or boiler turned off, wherein the controller turns on a blower at an operational level, and causes an ignitor to spark; and displaying parameters which allow an affirmation of a safe and reliable ignition prior to a gas turn on of the boiler or water heater unit. A flow balancing method and a programmed auto run method are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.