#1  
Old 10-11-2009, 02:03 PM
lwood's Avatar
Master Builder
 
Join Date: Jul 2009
Location: philippines
Posts: 642
Default Flue Damper

I am not seeing anybody use a damper on their flue. Or am I just not seeing it? Do you need a damper to prevent heat loss or any other reason?
Reply With Quote
  #2  
Old 10-11-2009, 02:21 PM
jmhepworth's Avatar
Journeyman
 
Join Date: Feb 2008
Location: Kaysville, Utah
Posts: 291
Default Re: Flue Damper

The chimney is outside the oven, above the vent. When you cook pizza with the fire burning, the vent and chimney keep the smoke out of your face and create a convection in the oven. Cold air comes in from the vent into the oven, and hot air comes out the top of the oven and up the chimney. It's actually pretty cool to watch. When you heat the oven and have fire from hell burning in it, the flames curl around the top of the oven, out the arch into the vent, and up the chimney.

If you use the oven to cook with retained heat, you close it off between the vent and the dome, so the chimney is outside what you close off. No damper necessary.

Joe
Reply With Quote
  #3  
Old 10-11-2009, 03:32 PM
nissanneill's Avatar
Il Pizzaiolo
 
Join Date: Apr 2007
Location: Adelaide, South Australia
Posts: 1,873
Thumbs up Re: Flue Damper

All a damper is going to do is to restrict the flow of your smoke and hot gasses that are exiting your oven. If 'choked down' too much, the you will get the smoke and gasses out the front of your oven, making it stained and hot and dangerous for the users.

Neill
__________________
Prevention is better than cure, - do it right the first time!

The more I learn, the more I realise how little I know


Neillís Pompeiii #1

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Neillís kitchen underway

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
  #4  
Old 10-11-2009, 06:49 PM
dmun's Avatar
Moderator
 
Join Date: Jul 2005
Location: New Jersey USA
Posts: 4,216
Default Re: Flue Damper

The only time a damper is needed is for an inside oven, to prevent heat loss from the room when you're not using the oven, just as a masonry fireplace would have. Outside? Not needed.
__________________
My geodesic oven project:
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
,
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
  #5  
Old 10-11-2009, 07:18 PM
lwood's Avatar
Master Builder
 
Join Date: Jul 2009
Location: philippines
Posts: 642
Default Re: Flue Damper

Thanks Joe, when you said "....If you use the oven to cook with retained heat, you close it off between the vent and the dome, so the chimney is outside what you close off. No damper necessary." I realized I was messed up. I was thinking that the vent door stop was before the flue rather than all the way to the dome. Now I understand, thanks. going to have to go back and look more closely at some more pics.
Reply With Quote
  #6  
Old 10-11-2009, 07:28 PM
jmhepworth's Avatar
Journeyman
 
Join Date: Feb 2008
Location: Kaysville, Utah
Posts: 291
Default Re: Flue Damper

You might see pictures of a door between the outside and the vent. Most of the time that's to keep weather out. I believe I've read something about someone using an outer door to control the fire as well. But the vast majority of doors are between the vent and the oven. That's why it's important to put a little reveal (make the vent tunnel a little wider than the inner arch) for the door to butt up against. You can see the one inch reveal (actually, its a little less than an inch, but I wanted it to be an inch) on the picture of my arch.

Joe
Attached Thumbnails
Flue Damper-img_0415.jpg  
Reply With Quote
  #7  
Old 10-12-2009, 01:35 AM
lwood's Avatar
Master Builder
 
Join Date: Jul 2009
Location: philippines
Posts: 642
Default Re: Flue Damper

It's funny when all of a sudden a light comes on when you understand how it is suppose to be. That damper thing was bothering me for a long time. I suppose I would have caught this at some point especially if I had looked at the FB drawings haha. It's difficult enough to build this project with all the intricacy. Even with pictures you do not catch all of them.

That's the beauty of this forum. You need some answers, there are lots of people and expertise to immediately set you straight. And a special thanks to the Forno Bavo people for sponsoring this and their infinite wisdom. Just had to say that.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Flue Damper martywatts Pompeii Oven Construction 2 08-29-2009 01:39 PM
Cracked chimney flue mfiore Pompeii Oven Construction 1 05-04-2009 02:35 PM
Chimney Flue Question RCANCILLA Modular Refractory Oven Installation 5 04-08-2009 07:47 AM
Damper inside chimney flue (Part 7) Marcel Brick Oven Photos 0 04-21-2006 12:37 PM
Flue Chimney Tips Alf Design Styles, Chimneys and Finish 1 08-02-2005 07:07 AM


All times are GMT -7. The time now is 05:27 PM.

Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
© 2006/10 Forno Bravo, LLC