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Posted by HeatPro on February 11, 2006 at 00:43:15:
In Reply to: Munchkin 399m exploding burner posted by CJ on February 10, 2006 at 20:24:15:
If the burner is having a delayed ignition so that some gas collects, then lights with a loud noise, it might be that the gas pressure adjustment has changed to too high or low a value. Use a sensitive manometer to check the gas pressure at the burner manifold.