Old 07-31-2014, 05:28 AM
Join Date: Jun 2014
Location: Aarhus, Denmark
Posts: 11
Default Chimney and vent size

I am building a 45" pompeii oven in Denmark right now and I am getting to the part where I have to decide on the chimney and vent size.

The door to the oven is 21" wide and now I am wondering which size the chimney should be.

Is there a general rule to this?

The chimney will be a non insulated black painted steel pipe (the ones normally used for WF stoves) around 1 meter high. My thoughts are that either a 6" or 8" would be fine.

And how wide should the vent leading up to the chimney be?

Thank you for your input

Br. Joergen
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Old 07-31-2014, 06:00 AM
UtahBeehiver's Avatar
Il Pizzaiolo
Join Date: May 2012
Location: Salt Lake City, Utah
Posts: 1,552
Default Re: Chimney and vent size

Six inch vent on a 45" oven is too small.
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Old 07-31-2014, 07:19 AM
boerwarrior's Avatar
Join Date: Apr 2013
Location: Santa Rosa, CA
Posts: 450
Default Re: Chimney and vent size

I have a 6inch chimney on a 32 inch oven and I almost went bigger. I'm with Utah you definitely want 8 inch.

The area of the vent needs to be BIGGER than the area of the chimney. An 8 inch chimney has an area of 50 square inches - so you want to be bigger than that for the vent; For instance 10 inches by 6 inches.
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