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Posted by HeatPro on January 06, 2005 at 07:47:59:
In Reply to: Re: LW shutoff check. posted by george on January 06, 2005 at 04:16:17:
Yes, it is a good sign that the burner shut off. It means that the float or sensor mechanism that checks if there is a minimum water level was working. That is how to check that it operates, lower the water in the low water cutoff chamber and see if the burner stops. Checking that every time you drain the low water cutoff is being careful.
http://64.226.150.132/hydronic/steam/steam1.htm
(near the bottom of the page under Service Procedures)