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Old 12-10-2009
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new carbon monoxide alarm

Could anyone please help me with the placement of my carbon monoxide alarm. Should it be high/low in the cabin? How far from the engine? Thanks in advance.
Charles Gladden
Fishing Guide
Bald Head Island, NC
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Old 12-10-2009
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High in the cabin, near the engine and exhaust. Really the main source of CO in an unheated boat is engine exhaust. It can blow back into the cabin from the exhaust outside the boat(rare but possible) or it can come from a leak in the exhaust system(more common and more dangerous).Gasoline engines produce much more CO than diesels do so an Atomic 4 with an aging exhaust system is especially prone to dangerous leaks. You want to make sure that the CO detector is between the CO source and any place where someone might sleep, ie. the quarterberth or settee. I know; the detector went off while my daughter was napping on the settee while we were motoring on Delaware Bay. The A4 exhaust manifold was shot. From then on no one went below while we were under power until we got home and had it repaired.
CO weighs about the same as air, so it will rise when warmed so the detector should be high.

Last edited by fordo; 12-10-2009 at 03:09 PM.
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