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Posted by Art Parent on November 14, 2006 at 15:48:11:
In Reply to: high CO levels posted by greg p on November 10, 2006 at 20:06:20:
: we have a weil mclain sectional boiler with gasses infiltrating out the seams of the sections giving off extremely high co levels. we found this out with a smoke test. what methods of sealing is thereof the sections ? it is a 3 mil btu steam boiler. no water leaks. we performed a hydronic test.
Most sectional cast iron boilers rely on a non asbestos rope gasket to seal between the secions. Either the rope is improperly installed or has "blown" out as a result of a puff back/ delayed ignition, etc. High CO levels are also an indication that the combustion is not properly set. Rich and for that matter lean fuel /air mixtures can produce excessive amounts of CO.