The working principle of the oil-gas boiler is actually simple. The general principle is based on fuel oil and gas as auxiliary. Before the boiler is ignited, the fuel oil switch must be turned on, and the gas switch must be kept closed at this time. Then start the ignition. After the ignition is successful and the fuel combustion is stable, turn on the gas switch to enter the dual-use combustion mode. The dual-use dual-use combustion state starts, and the installation cost of the oil-gas boiler is not high.

　　It can be fuel oil alone, gas alone, or dual-use oil and gas. Compared with dual-use gas or oil, it is more economical and more economical.