crumbling flue liner

[John Dirks Jr]

This liner for an oil furnace is crumbling. What causes this? It had a stainless steel cap that I removed to reveal this.

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[Jim Katen]

Originally posted by John Dirks Jr

This liner for an oil furnace is crumbling. What causes this? It had a stainless steel cap that I removed to reveal this.

It looks like spalling caused by water that's saturated the tile and then frozen.

- Jim Katen, Oregon

[Jerry Simon]

We don't have oil furnaces in these parts...really sooty flue interior normal?

And yes, spalled tile from freeze-thaw of moisture-laden flue tile; that, or there's current in the chimney.

[Tim H]

or there's current in the chimney.

Jerry,

I am guessing that the current would be carried by the moisture? Is this something you have seen (measured) with a meter? How does the current act as a destrucutive force on the tile?

Thanks,

Tim

[hausdok]

Hi,

Old oil furnaces often spew a lot of sulphur. It coats the flue tile, gets wet and the mixture saturates the tile. Sulphur + water = ?

OT - OF!!!

M.

[Jerry Simon]

Originally posted by hausdok

Sulphur + water = ?

Waphur?

[Tim H]

Originally posted by hausdok

Hi,

Old oil furnaces often spew a lot of sulphur. It coats the flue tile, gets wet and the mixture saturates the tile. Sulphur + water = ?

OT - OF!!!

M.

Combining sulphur dioxide and water produces what is commonly called acid rain. I am wondering where the current comes in to play, and how the current acts on the flue tile (failure mode). If the damage is caused by electrolysis, there would still have to be a source for the current, wouldn't there?

Tim

[Jim Katen]

Originally posted by Tim H

. . . Combining sulphur dioxide and water produces what is commonly called acid rain. I am wondering where the current comes in to play, and how the current acts on the flue tile (failure mode). If the damage is caused by electrolysis, there would still have to be a source for the current, wouldn't there?

Tim

I believe that Jerry's comment about current in the chimney was a humorous reference to another, recurring, thread about blackening of copper pipe and whether or not it has to do with current in the pipe.

- Jim Katen, Oregon

[Tim H]

Originally posted by Jim Katen

Originally posted by Tim H

. . . Combining sulphur dioxide and water produces what is commonly called acid rain. I am wondering where the current comes in to play, and how the current acts on the flue tile (failure mode). If the damage is caused by electrolysis, there would still have to be a source for the current, wouldn't there?

Tim

I believe that Jerry's comment about current in the chimney was a humorous reference to another, recurring, thread about blackening of copper pipe and whether or not it has to do with current in the pipe.

- Jim Katen, Oregon

Thanks Jim,

I was beginning to wonder if my question was just too dumb to be answered. I guess it was. Whole thing went right over my head.