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Chimney liner for oil fired boiler anthonymmfalcone 11-06-2007
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Posted by on November 6, 2007, 12:03 am
Dear Readers,

I've a Burnham MPO boiler. I called Burnham, whose technicians
suggest that I take the most conservative approach and line my
existing exterior-wall, clay-lined brick chimney with a stainless
liner to minimize flue condensation.

Should this liner necessarily be insulated as well? Or is the dead
airspace (although somewhat cold due to exterior wall) in the chimney
a sufficient buffer? I know the most conservative answer is to
insulate the liner too, but your experiences would be appreciated as
this insulation would be yet another expense on top of the liner.

Thank you very much for your responses.
-Anthony


Posted by Don Ocean on November 6, 2007, 5:08 am
anthonymmfalcone@yahoo.com wrote:
> Dear Readers,
>
> I've a Burnham MPO boiler. I called Burnham, whose technicians
> suggest that I take the most conservative approach and line my
> existing exterior-wall, clay-lined brick chimney with a stainless
> liner to minimize flue condensation.
>
> Should this liner necessarily be insulated as well? Or is the dead
> airspace (although somewhat cold due to exterior wall) in the chimney
> a sufficient buffer? I know the most conservative answer is to
> insulate the liner too, but your experiences would be appreciated as
> this insulation would be yet another expense on top of the liner.
>
> Thank you very much for your responses.
> -Anthony

Heh! Heh! Size does matter... ;-)

>

Posted by ransley on November 6, 2007, 8:37 am
> anthonymmfalc...@yahoo.com wrote:
> > Dear Readers,
>
> > I've a Burnham MPO boiler. I called Burnham, whose technicians
> > suggest that I take the most conservative approach and line my
> > existing exterior-wall, clay-lined brick chimney with a stainless
> > liner to minimize flue condensation.
>
> > Should this liner necessarily be insulated as well? Or is the dead
> > airspace (although somewhat cold due to exterior wall) in the chimney
> > a sufficient buffer? I know the most conservative answer is to
> > insulate the liner too, but your experiences would be appreciated as
> > this insulation would be yet another expense on top of the liner.
>
> > Thank you very much for your responses.
> > -Anthony
>
> Heh! Heh! Size does matter... ;-)
>
>
>
> - Hide quoted text -
>
> - Show quoted text -- Hide quoted text -
>
> - Show quoted text -

If it heats water its a boiler, if it heats air its a furnace, so you
have a boiler from your next post. If its a condensing unit you should
be able to vent through a wall, I dont understand why you need to line
a clay lined chimney unless its falling apart, clay is durable.


Posted by Bob Pietrangelo on November 6, 2007, 10:55 am


>
> If it heats water its a boiler, if it heats air its a furnace, so you
> have a boiler from your next post. If its a condensing unit you should
> be able to vent through a wall, I dont understand why you need to line
> a clay lined chimney unless its falling apart, clay is durable.

Mortar is not
>



Posted by Bubba on November 6, 2007, 11:54 am
wrote:

>> anthonymmfalc...@yahoo.com wrote:
>> > Dear Readers,
>>
>> > I've a Burnham MPO boiler. I called Burnham, whose technicians
>> > suggest that I take the most conservative approach and line my
>> > existing exterior-wall, clay-lined brick chimney with a stainless
>> > liner to minimize flue condensation.
>>
>> > Should this liner necessarily be insulated as well? Or is the dead
>> > airspace (although somewhat cold due to exterior wall) in the chimney
>> > a sufficient buffer? I know the most conservative answer is to
>> > insulate the liner too, but your experiences would be appreciated as
>> > this insulation would be yet another expense on top of the liner.
>>
>> > Thank you very much for your responses.
>> > -Anthony
>>
>> Heh! Heh! Size does matter... ;-)
>>
>>
>>
>> - Hide quoted text -
>>
>> - Show quoted text -- Hide quoted text -
>>
>> - Show quoted text -
>
>If it heats water its a boiler, if it heats air its a furnace, so you
>have a boiler from your next post. If its a condensing unit you should
>be able to vent through a wall, I dont understand why you need to line
>a clay lined chimney unless its falling apart, clay is durable.

Thats why you dont do HVAC. Most chimneys were designed long ago with
a big ol flue to handle those huge gravity furnaces that ate large
amounts of gas when no one cared how little it cost.
Now gas is expensive. People are using furnaces that dont require a
huge chimney. They need a smaller one so the flue gasses dont condense
in the chimney and destroy. Thats why you line them with a smaller
flexible flue or a b-vent flue. Thus, effectively reducing the size of
the chimney and preventing condensation where it doesnt belong.
Things becoming a little clearer now, ransley?
Bubba

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