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Old 12-28-2011, 04:41 PM   #31
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Boiler replacement, oil vs LP


I don't do much oil anymore but I remember reading and Beenthere who does oil may chime in that these high efficiency direct vent oil furnaces are very finicky and prone to soot buildup or need cleaning 1-2 times a yr. If they run even a bit too cool then the suplhur in the oil/smoke condenses inside the furnace/boiler and venting and corrodes the heck out of it and makes a heck of a mess.

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Old 12-28-2011, 04:49 PM   #32
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Originally Posted by yuri View Post
I don't do much oil anymore but I remember reading and Beenthere who does oil may chime in that these high efficiency direct vent oil furnaces are very finicky and prone to soot buildup or need cleaning 1-2 times a yr. If they run even a bit too cool then the suplhur in the oil/smoke condenses inside the furnace/boiler and venting and corrodes the heck out of it and makes a heck of a mess.
That might be true, I dunno. Buderus makes a hi-eff boiler that supposedly burns very clean, no NOX or SOX, and is cool enough to side vent. I wouldn't expect them to make a boiler that performs terribly.

Also, I understand that the sulfur content of #2 heating oil has been reduced a lot (from 200+ to 15ppm?) according to some international agreement. It's possible that the final stages of reducing sulfur have yet to occur.
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Old 12-28-2011, 04:53 PM   #33
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Boiler replacement, oil vs LP


that low grade sulphur oil wrecked havoc on the oil pumps for awhile until they modified them. the sulphur lubricated the internals. I think the biggest problem is keeping the fumes and suplhur from condensing so it must be setup perfectly.
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Old 12-28-2011, 05:40 PM   #34
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Boiler replacement, oil vs LP


I hate any side vented oil boiler or furnace. Pretty much all of them end up leaving a nice soot stain on the outside wall. If any door or window isn't sealed on that side of the house, you get some odor every so often. No one like that. Side venting oil is a last resort.

Yep, Beckett finally has their NOX oil burner almost reliable.

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