Gas source control method of self-adaptive gas water heater

The present invention discloses an adaptive control method of a gas water heater air supply, characterized in that it is a change in the secondary pressure regulation section according to the size of the air supply, fan speed control amount and the proportional valve to the gas delivery nozzle. When the working gas water heater according to the present invention, the gas source may switch to a different state automatically or manually, to select an optimal operation state, the structure is simple, easy to use.