Harman XXV venting question

[johnhon]

I have an XXV stove I need venting information for. I want to vent my stove out the back horizontally through an outside wall then turn down with a 90, then run under a deck horizontally with another 90 for 10 ft, then terminate 2 ft. past the edge of the deck. I couldn't find any information for this configuration in the manual. Harman Stove wouldn't answer this for me. Do any of you know if this will work? Thanks.

 

[bogieb]

Running the vent downward does not sound like a good plan to me.

 

[Ssyko]

no info in the manual because the manufacturer does not recommend any downward angles, they all have to go upward for drafting

 

[SidecarFlip]

...additionally, with any run that length, you need to go to 4" venting, not 3. I believe you need to revise the location elsewhere. Any down venting will become a fly ash collector where it turns out again.