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copper sulphide Black Dust

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Bob Harper
Bob Harper Member Posts: 1,143
in THE MAIN WALL
Does anyone have info. on this phenomenon such as clogging gas valves, causing delayed ignition, stuck valves,clogged burner ports, CO emissions, etc.? Any info. on how effective inlet screens or sediment traps are at catching the particles and preventing these problems? NG vs. LP? It is supposedle a problem if the hydrogen sulphide gets over 0.4 grains/m3, which I guess is why the gas codes call for a max. of 0.3 grains.
TIA,
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