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Poor Chimney Draw jk 11-02-2007
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Posted by enigma845 on November 2, 2007, 9:05 pm
Sorry for the typo. Try opening a window until the chimney is drawing
sufficiently.

enigma845 wrote:
>During the 1970s energy crisis, we used a wood stove to heat the house.
>Opening a window for a few minutes may help. I think it has to do with the
>fire needing a certain amount of air to combust correctly. Ty it. Priceless!
>
>>We had our chimney lined 4 years ago and despite the company's claims
>>that lining the chimney wouldn't effect the draw, it did. We called
>[quoted text clipped - 10 lines]
>>
>>Any suggestions would be welcome.
>

--
Betty Boop


Radiant Heat 468x60
Posted by terry on November 3, 2007, 10:02 am
> Sorry for the typo. Try opening a window until the chimney is drawing
> sufficiently.
>
> enigma845 wrote:
> >During the 1970s energy crisis, we used a wood stove to heat the house.
> >Opening a window for a few minutes may help. I think it has to do with the
> >fire needing a certain amount of air to combust correctly. Ty it. Priceless!
>
> >>We had our chimney lined 4 years ago and despite the company's claims
> >>that lining the chimney wouldn't effect the draw, it did. We called
> >[quoted text clipped - 10 lines]
>
> >>Any suggestions would be welcome.
>
> --
> Betty Boop

Sometimes in very calm weather (although not likely I'd be putting in
a fire then anyway) it takes a few minutes for chimney to heat up and
fire to 'draw' properly. Also any air going up the chimney has to come
from somewhere within the house. If the house is very tightly sealed
and or there is an an exhaust fan or air exchanger sucking out stale
air somewhere in the house you may have negative pressure. switch of
the fan open a window nearby a crack. Other wise there may be outside
factors; wind coming over edge of roof, chimney not high enough over
local obstructions, interfering trees etc.


Posted by Frank on November 4, 2007, 8:18 am
jk@jackiekazarian.net wrote:
> We had our chimney lined 4 years ago and despite the company's claims
> that lining the chimney wouldn't effect the draw, it did. We called
> the company back 3 times to correct the problem. They placed a fan at
> the top of the chimney to draw the smoke out, but this didn't work.
> They replaced the fan and it still didn't work. They claimed that the
> draw was fine but it wasn't. We had another company come and run a
> video through the liner to be sure there were no problems along the
> way, and it was completely clean, sealed and clear.
>
> We finally gave up and haven't used the chimney since. I would like
> to remedy the situation. What might make this chimney work again? A
> stronger fan? How strong? Altering the opening to the fireplace?
>
> Any suggestions would be welcome.
>
Problem I had was fireplace in family room in basement next to furnace
room. When furnace came on it created negative pressure and if there
was not good airflow into room smoke might come out of fire place.
I have a second fireplace and my wife tired of smell of smoke so we
closed family room fireplace off at top and bottom and put in an
electric unit for appearance and a little heat.

Frank

Posted by EXT on November 4, 2007, 6:13 pm
Fireplaces and chimney opening size are closely related. There are charts
out there that provide the formula for determining the number of square
inches of chimney flue for the number of square inches of fireplace opening.
If the chimney is too small it will not draw properly.

I think that the only way to line a chimney is to reduce the flue opening.
This may have reduced it down too small for the fireplace size. You may have
to reduce the opening by installing masonry or metal sides and/or top of the
fireplace. Search Google for the charts and determine the new flue size and
its matching fireplace opening size.

Most chimneys for fireplaces are closely matched, changing it can make a big
difference. For stoves and furnaces most chimneys are oversize and lining it
with a smaller liner actually can improve performance. Your sales/installer
people probably were thinking this would apply to your fireplace, but in
reality they know nothing about fireplaces.

> We had our chimney lined 4 years ago and despite the company's claims
> that lining the chimney wouldn't effect the draw, it did. We called
> the company back 3 times to correct the problem. They placed a fan at
> the top of the chimney to draw the smoke out, but this didn't work.
> They replaced the fan and it still didn't work. They claimed that the
> draw was fine but it wasn't. We had another company come and run a
> video through the liner to be sure there were no problems along the
> way, and it was completely clean, sealed and clear.
>
> We finally gave up and haven't used the chimney since. I would like
> to remedy the situation. What might make this chimney work again? A
> stronger fan? How strong? Altering the opening to the fireplace?
>
> Any suggestions would be welcome.
>



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