well not sure of the exact implementation date of TILMA, thought is was
in '09. no biggie though. actually the new restriction for the 'b' is 400 mbtuh.
the old 'b', which is what you have the power burner is good for 750 mbtuh
if my memory serves me correct.
what gets me is the price of the code book, yikes
Those numbers seem right. I was just going off the top of my head.