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Posted by derek anthony on November 13, 2009 at 21:09:51:
In Reply to: glowing Morrison tube posted by Anh on March 24, 2009 at 15:49:52:
: Have a 600 hp Kewanee firetube boiler. Replaced the original Kewanee burner with a new, low-NOx burner. When operating, the refractory and first foot length or so (burner end) of the Morrison tube appear to glow orange. Assuming refractory is glowing due to curing the work done on it. However, concerned with the Morrison tube - perhaps possible flame impingement. Is it normal or allowable for the Morrison tube to glow? Or, is there a recommended boiler rep familiar with Kewanee for consultation (since the company no longer exists)?
it is normal for the tube to glow because of the heat build up, it should glow for like 5 seconds after the burner shut off, ( this is during post purge) the signs of flame impingement is either excessive soot or a bulge on the morrison tube