still have flames comin out of bottom of boiler checked the pipin all is clear, there is some soot inside boiler tho could this be reason for blockage? can feel draft thru pipe goin up chimey and feel heat comin out of removed top pipe of boiler, donrtt worry have pellet burner for secondary heat source. laid off so tryin to solve prob myself. have a valve for gas shut off on furnace when i choke off gas to furnace of course flames stay inside furnace and return to proper blue color, is there regulator as part of the pilot lghter gas valve?
If the vent is clean and has nothing, and nothing in there, no cob webs or nothing, time to clean the boiler, shouldn't be that much soot in there, some of these are kind of hard to clean have very small passages for the exhaust gasses to go through between cast iron sections, many different designs, any idea what you really have there..
Larry sorry to hear you still have a problem. It still sounds as if the boiler is clogged between the sections. You have already removed the flue pipe off the top. Next remove the top of the jacket then the flue Collar remove all the burners and put a drop light under the boiler.you should be able to see down between the sections. a long bottle brush is best for cleaning between the sections. Be careful when putting the boiler back together. This a gas boiler and if you are not sure don't do it. P.S. Thank you for the high rratingI hope this helps and again be careful. this is very dangerous.
you have way to much air coming into the system. check all duct work for loose seams or two parts coming apart. make sure whatever parts you moved to look at the flame you put them back correctly. also as for the soot it may need a good cleaning.
