What should I pay attention to when heating with weather gas?

I think the most noteworthy thing about gas-fired hot water system is the discharge of harmful gases, that is, ventilation. If the environment is not closed, in addition to the forced ventilation equipment, there should be gaps in the nearby windows to supplement fresh air. If it is in the cold area in the north, it is recommended to use a balanced gas boiler. When the equipment is running, waste gas and supplementary air are completed through special exhaust pipeline, and the equipment body is sealed. Combustion and emission have nothing to do with indoor air.