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boiler burning flue gas

Flue gas - Wikipedia

33 · Flue gas is the gas exiting to the atmosphere via a flue which is a pipe or channel for ...

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Flue gases and combustion product hazards from heating ...

Some use 100 ppm as the safety threshold for finding CO in the gas boiler exhaust flue. On a recent boiler repair job in Two Harbors MN an initial inspection by a heating technician condemned a heating boiler as unsafe because of elevated CO levels in the boiler's exhaust. He found 101 ppm in his measurement of CO in the flue and pointed to rust on the boiler bottom

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