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When the air temperature rises the air

When the air temperature rises, the air is less dense and the oxygen content is lower the burner could actually soot due to the low oxygen content of the combustion air slight barometric changes can also affect the fuel to air ratio of burners if the barometric pressure changes from 29 to 28, the excess air will drop by 33% if the boiler uses combustion air directly connected to the outside, the fuel-to-air ratio should be checked at least twice per year.

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