#11  
Old 09-28-2009, 07:40 PM
Serf
 
Join Date: Aug 2009
Location: north carolina
Posts: 4
Talking Re: Rear Chiminey

i just finished my first wfo and i placed my chimney in the rear. having realized that that was a mistake from the test run, i quickly adapted with an adjacent fan that ties into the lower portion of the chimney duct. i used a 12 volt computer fan that draws air from the ducting i created reduced down to 1 1/2 inch outlet. i installed it into the hole i cut out of the chimney duct. i pitched it about 30 degrees upward to create an upward draft. i run it off of my car battery jump box, and it can run for up to 6 hours. it cost me about $30 in materiel, and i have to say, it worked far better than i expected. 80% of the smoke is now channeled through the chimney, and the fire rages on start-up due to the forced suction of oxygen from the door opening . yes, it's unorthodox, but it works like a charm. the oven reaches cooking temperature in about 30 to 40 minutes. you are probably still going to bash me for this advise LOL.

Last edited by mhannawa; 09-28-2009 at 08:07 PM. Reason: added text
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  #12  
Old 09-29-2009, 08:44 AM
Breven's Avatar
Journeyman
 
Join Date: May 2008
Location: Victorville, California
Posts: 251
Default Re: Rear Chiminey

No bashing from me....you do what you gotta do to make it work! However (here comes some mild bashing) I personally think that one of the coolest part of building a WFO oven is how effecient you can make it using basic materials. I mean, this is a 2,000 year old design that works perfectly without electricity and fans. That is, if you build it right! of course...I've never had my oven up to temp in 30 minutes- which would be nice.
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  #13  
Old 10-02-2009, 04:24 AM
Il Pizzaiolo
 
Join Date: Mar 2009
Location: USA
Posts: 1,436
Default Re: Rear Chiminey

Ed

19b
Quote:
I am in the process of building pizza oven now and would like to put a fireplace next to it. Does anyone think it is possible to join the two flues and go up in between them?
Flues may slope to join with other flues so as to discharge through a common flue, or to achieve the desired location of the chimney. The maximum allowable slope is 30 deg from vertical. When combining flues the main discharge flue should be sized for the maximum combined flow from the smaller flues. Combining flues of dissimilar systems or fuels. i.e., appliances and fireplaces, is not allowed by many building codes. Separate flues may be incorporated into one chimney so long as minimum wall thickness requirements are met and a full wythe of brick is laid between them and bonded to the chimney walls.

Check the link posted above (19B) I think that should answer all your questions....
Mark
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