Oil Burner Air Tube Integrity

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Old 02-25-14, 06:22 AM
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Oil Burner Air Tube Integrity

How important is oil burner air tube integrity? One of the bottom quadrants on my Riello 40 F3 air tube is a little mushroomed (see pictures). Should I replace the air tube? Suspected causal conditions have been corrected.
 
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Old 02-25-14, 08:16 AM
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Probably a good idea to replace that, it's obviously compromised.
 
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Old 02-25-14, 12:42 PM
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Fly,
The tube and end cone are designed for proper air delivery and combustion.
You definitely should replace it.

Type in your burner on you tube and there's a 25 min. tutorial on there that will explain it more fully.
I think you'll find it educational.
 
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Old 02-25-14, 02:44 PM
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Ditto, absolutely replace it. Won't burn properly without replacing that.
 
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Old 02-25-14, 07:18 PM
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The second thing is why is it burned like that? Something caused it. Too much heat is being reflected back to the burner tube. Is there a combustion chamber?
 
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Old 02-26-14, 06:21 AM
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Contact with ash build up in the combustion chamber and air tube installed to far into combustion chamber (according to Riello installation instructions).
 
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Old 02-26-14, 06:37 AM
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And those were the 'causal conditions' that you said have been corrected, yes?
 
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Old 02-26-14, 09:52 AM
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Yes. Used your (NJ Trooper) post to check my expansion tank this morning. It was down to about 7-8 psi. Brought it up to 12 psi. Like the optional valve/drain idea and will add them at some point. Thanks.
 
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Old 02-26-14, 10:00 AM
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Currently has an 8 7/8" air tube on it. Can get one with shipping for $46. A 6" air tube would be plenty though. Wonder if I should get the whole combustion head assembly (6"). Can get one with shipping for $86. Can I do this? If air has 2" less to travel is something going to change?
 
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Old 02-26-14, 12:23 PM
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No, the distance it has to travel is irrelevant. The nozzle assembly must match the tube though.
If you shorten the tube your current assembly may be too long.
You might want to get the package.

If that burner came with the boiler as a package why was it too long to begin with and how did it get corrected without replacing it.
 
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Old 02-26-14, 06:41 PM
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Combustion head is the package. It comes with everything but the nozzle. That's why it's $86 rather than $46.

This Riello burner did not come with the boiler. It was an emergency replacement for a prior Riello burner several winters ago. I assume the oil guy put this one in because that's what he had on the shelf. The oil guy was allowed to keep the original Riello to autopsy it. Other people were involved at that time and the oil burner was not my "department" so I don't have many details on the original Riello burner (it was a Riello Mectron 3 Type 215T...I still have the owners manual).
 
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Old 02-26-14, 06:51 PM
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Fly,
I think that would be the way to go.

Shame on the other guy. Emergency or not, the flange that comes with the burner is adjustable on the the tube so it's inserted to the right length.

Good Luck,
 
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Old 02-27-14, 03:35 AM
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Thanks spott. Checked out those Youtube videos. Very interesting. Turbulator function makes more sense to me now.
 
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