Ok to make a heat shield for the stove rather than the wall?

Dmils Posted By Dmils, Nov 27, 2018 at 10:43 PM

  1. Dmils

    Dmils
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    Hello, I am working on installing a Trolla 107a that's in good condition. I need to mount it so one side is facing the room and the other side is about 13" from the wall. Rather than mounting a huge heat shield one inch from the wall, can I bolt a smaller one to the stove? I would leave room for more than an inch of circulating air between the stove and the shield. I could make it large enough so there would still be metal between the stove and anything combustable within 36". I believe that the standard states a wall shield must be a at least one inch from the wall. Is there a maximum distance? Thanks for your thoughts.
     
  2. begreen

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    Unfortunately no. It may work but there is no testing to know how much heat that would reduce.
     
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  3. bholler

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    I disagree with you bg. The code only says atleast 1". All it is doing is blocking direct radiant heat. It works just as well on the stove as it does on the wall. It is just the same as using a pipe sheild.
     
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  4. begreen

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    The clearances and construction options for a wall shield are clearly spelled out. Walls in a residence are of predictable construction. Can you show me a clearance reduction table for a shield on an unlisted appliance? How would one know if the requested 13" is safe or not?

    A shield on a pipe reduces clearance 50%. By that logic on a stove it would be a reduction to 18". What rule applies here? Does it apply universally to all stoves? Typically adding a heat shield to the back of a stove does not create a 66% reduction. Look at tested stoves that have both options. For example this is from the Jotul 8. They tested with and without a rear shield and came up with a 36% reduction.

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  5. Dmils

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    Thanks to both of you. I can see it both ways. I had not thought of the comparison to the pipe shield, or to the tested stoves. Part of the difference may be that the stove shield would consist of less metal and therefore be less effective at blocking or distributing the heat. BG, I take your point that it's untested. With that in mind I've gone ahead and built a proper wall shield. Curious though, is there a formula for how much radiant heat a 24 gauge sheet of steel will reflect or transmit?
     
  6. begreen

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