This question is mostly just being driven by my curiosity. I know that burning 100% corn requires special venting material. If one burns a 50/50 combination of wood pellets and corn, does one still need more expensive corn-rated venting?
Venting Requirements for Biomass Stoves
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vgrund said:
The special venting is required because burning corn produces products that are corrosive, burning a mixture just produces a smaller amount it doesn't prevent it from forming so the answer is yes.
I did a search on corn in the Mt Vernon AE manual (an insert I'm considering). It does not address it in any way, whether 100% corn or a mixture.
The manual says PL or L venting is to be used. It however is silent on what gets used when.
PL vent pipe is rated for both wood pellets and grain (corn), type L is rated for wood pellets.
So as they say pick your poison, my bet is the PL will stand up a lot better than the L when burning any quantity of corn. I wish I could remember where I saw a picture of some vent pipe after being used with corn that wasn't rated for it Holey would be the word I'd use to describe it.
PL vent pipe is rated for both wood pellets and grain (corn), type L is rated for wood pellets.
So as they say pick your poison, my bet is the PL will stand up a lot better than the L when burning any quantity of corn. I wish I could remember where I saw a picture of some vent pipe after being used with corn that wasn't rated for it Holey would be the word I'd use to describe it.
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