Question on flap behind catalyst
- Thread starter Cburke
- Start date
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![[Hearth.com] Question on flap behind catalyst](/talk/data/attachments/344/344172-e4db9c359d9e2d7a8f5a2254951eb7ec.jpg?hash=9YORzm9knc)
I presume to make it read the cat temp better; it'll get hot from the radiation of the cat, and the probe then sits in a more flat temperature gradient, leading to a more correct reading.
And maybe it's useful for directing some exhaust flow too, leading to more heat transfer than the top of the stove rather than having the gases.exit straight to the flue from the back of the cat.
And maybe it's useful for directing some exhaust flow too, leading to more heat transfer than the top of the stove rather than having the gases.exit straight to the flue from the back of the cat.
