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THIS IS A QUESTION NOT A COMMENT. I COULDN'T FIND THE POST TO ASK A QUESTION.
I HAVE A AMERICAN OIL BURNING BOILER #S-0611 RATED TO HEAT 515 SQ. FT. OF STANDING RADIATION. THE BOILER WAS INSTALLED IN 1939. LAST YEAR I CHANGED THE OIL BURNER WITH A BECKETT MODEL 7505 AFG. THIS YEAR I AM REPLACING THE FIRE CHAMBER WITH INSULATED FIRE BRICK RATED AT 2,600 DEGREES. PRIOR TO INSTALLING THE IFB'S I SOAKED THE BRICKS THEY ABSORBED A LOT OF WATER AND THE JOINTS NEVER SEAMED TO HARDEN PROPERLY. WHEN I FIRED THE BURNER IT WOULD ONLY STAY ON FOR ABOUT 10 SECONDS AT A TIME DUE TO THE RETAINING A LARGE AMOUNT OF WATER. WHEN I FINALLY DRIED THE BRICKS OUT SOME OF THE BRICKS SEPARATED FROM THE JOINTS AND SOME CRACKED. THE QUESTION IS DO I HAVE REINSTALL THE FIRE BRICKS ALL OVER AGAIN AND NOT SOAK THEM OR IS THEIR ANYTHING ELSE I CAN DO?