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Propane pre-heating in WFO??? Possible or crazy?

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  • #16
    I am going to unapprove topic until we can get an consensus among the moderators and FB
    Russell
    Google Photo Album [https://photos.google.com/share/AF1Q...JneXVXc3hVNHd3/]

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    • #17
      This topic has been approve subject to the Sticky forum disclaimer at the beginning of the topic.
      Russell
      Google Photo Album [https://photos.google.com/share/AF1Q...JneXVXc3hVNHd3/]

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      • #18
        Originally posted by Gulf View Post
        Indoor or outdoor doesn't matter when your safety is of concern. An oven is a confined space where the collection of combustible gasses can occur..............with your face at the opening when they can ignite
        Truth be told, I'd be more worried about all the flying bricks and my hard work gone than my face! I think the flame safety device is most important. Unfortunately, the one local firm that makes such a thing specifically for pizza ovens are out of stock and the wok burners with fail safe devices are very expensive, so I'll need to think about this some more to find an economical and safe solution.
        My 42" build: https://community.fornobravo.com/for...ld-new-zealand
        My oven drawings: My oven drawings - Forno Bravo Forum: The Wood-Fired Oven Community

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        • #19
          Originally posted by UtahBeehiver View Post
          This topic has been approve subject to the Sticky forum disclaimer at the beginning of the topic.
          Cool! Thanks Russell.
          My 42" build: https://community.fornobravo.com/for...ld-new-zealand
          My oven drawings: My oven drawings - Forno Bravo Forum: The Wood-Fired Oven Community

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          • #20
            Originally posted by david s View Post
            Making up a homemade gas burner set up has been a taboo subject on this forum because of the safety aspect. I’m not sure of the current policy, but someone else may chime in. The burner should be fitted with a flame failure device (I don’t see one with your set up), as filling a hot oven with gas is a potentially dangerous situation. The problem is further compounded if wood is also used because it can provide an ignition source for unignited gas.

            I can appreciate your concern, but I ask you to go back through my posts and re-read all of them. I went through my entire procedure from honking it up to the tank, lighting it, inserting it into the oven, heating the oven, removing it and storing the assembly. You are stating things that simply aren’t true. Filling a hot oven with gas? Yes, if the flame goes out then it’s possible and I will look into a flame failure devise, but when or where did I make any mention of putting raw gas into a hot oven? Also, where did I state that I used gas and wood at the same time? I suggest a quick re-read so that nobody else misunderstands what I built and how it’s being used. I don’t want to start a disagreement but I don’t want someone taking something from this thread due to misinformation.

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            • #21
              I'm glad you have acknowledged the lack of a flame failure device on your burner. Should the flame fail, the hot oven will fill with gas and relighting it becomes extremely dangerous. I didn't say you were using gas in conjunction with wood, just a warning that the combination is extremely dangerous if no flame failure device is fitted.
              FB did post this disclaimer about the issue.

              https://community.fornobravo.com/for...mer#post443206
              Kindled with zeal and fired with passion.

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              • #22
                Originally posted by MarkJerling View Post

                Truth be told, I'd be more worried about all the flying bricks and my hard work gone than my face! I think the flame safety device is most important. Unfortunately, the one local firm that makes such a thing specifically for pizza ovens are out of stock and the wok burners with fail safe devices are very expensive, so I'll need to think about this some more to find an economical and safe solution.
                Ovens can be replaced. A handsome mug like yours, I'm not so sure . Seriously, don't use a device like this unattended. I use gas on one of my "throwed together" metal forges without any safety devices. I have had flame outs. But, I am there to immediately correct the problem! Propane will ignite at 920F to 1020F. Natural gas a little higher. WFO's will heat a projection of brick to those temperatures well before the oven is up to working temperature. It only takes a fuel source (gas), a slight draft of wind (O2), and the ignition temperature to cause a major problem!
                Joe Watson " A year from now, you will wish that you had started today" My Build Album / My Build

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                • #23
                  Originally posted by Gulf View Post

                  Ovens can be replaced. A handsome mug like yours, I'm not so sure . Seriously, don't use a device like this unattended. I use gas on one of my "throwed together" metal forges without any safety devices. I have had flame outs. But, I am there to immediately correct the problem! Propane will ignite at 920F to 1020F. Natural gas a little higher. WFO's will heat a projection of brick to those temperatures well before the oven is up to working temperature. It only takes a fuel source (gas), a slight draft of wind (O2), and the ignition temperature to cause a major problem!
                  Thank you, and yes, 100% agreed. Without a reliable flame failure device I'd certainly not even try it.
                  My 42" build: https://community.fornobravo.com/for...ld-new-zealand
                  My oven drawings: My oven drawings - Forno Bravo Forum: The Wood-Fired Oven Community

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                  • #24
                    Can someone point me toward a devise that would work with my set-up. Thanks.

                    Would this work? Click image for larger version

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                    Last edited by UtahBeehiver; 11-23-2021, 07:34 PM. Reason: Removed the hyperlink but cut and pasted the item.

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                    • #25
                      This question should be directed to a license professional, city inspector, or local gas provider as per the Forum disclaimer. I removed the direct hyperlink to the flame failure device.
                      Russell
                      Google Photo Album [https://photos.google.com/share/AF1Q...JneXVXc3hVNHd3/]

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