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Changing blast tube lenght
I may be in the market for a new Riello burner. Mine is 25 years old and needs some major repairs, blast tube and motor. I see that burners come with different length blast tubes. I have an 8 inch now but because of the burner location a shorter tube would fit the boiler room better. Could I replace an 8 inch with a shorter 5.5 inch assuming I replace the complete unit and a shorter tube would not cause maintenance interference problems?