Excessive carbon monoxide levels in low-nitrogen burners
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The new low-nitrogen burners installed in the heating furnace burn pure gas; nitrogen oxide levels are within the specified limits. However, the carbon monoxide level is several thousand ppm. After replacing the burner tip once, the carbon monoxide level is still around seven or eight hundred ppm. The manufacturer refuses to help, saying that it’s caused by too low a furnace temperature. Is 500 degrees considered a low temperature for the furnace? Besides, carbon monoxide isn’t burned inside the furnace; so what does it have to do with the furnace temperature?
Has the air supply been adjusted properly? If the CO level is too high, it is likely due to incomplete combustion of natural gas in the furnace. There is a mechanism on the burner for adjusting the air supply, allowing the amount of air supplied to be adjusted.
The air supply is fine; the remaining oxygen level is around 3.0–4.0%. The image shown is what the seller presents, but in actual operation some of the burners do not function properly
What brand of burner? Keep asking them to send people to adjust it – it will definitely go down! One more question: has the product been accepted? If there’s no inspection, they won’t pay you; look, he still ignores me~
With such high levels of carbon monoxide, it’s necessary to shut down the furnace immediately; it’s too dangerous to continue burning. Incomplete combustion leads to low efficiency and waste of energy. Carbon buildup occurs in the smoke pipes as well as in the burner nozzles, which reduces heat transfer efficiency and raises the exhaust temperature
Is the gas temperature in the furnace over 500 degrees? That’s way too low!
How is it possible for it not to have an impact? Low-nitrogen combustion does affect the efficiency of boilers; it lowers the temperature, leading to incomplete combustion and an increase in CO levels. Many boiler manufacturers are unable to solve this problem.
Is the low furnace temperature due to the inability to increase the boiler load? An oxygen level of around 4-6% should be appropriate; try raising it a bit.
How is your question so similar to the situation with my burner?