Help with stove Pipe length on Englander NC30

[Skitheeast]

Hi Everyone,
We purchased an NC30 this past spring with the advice of everyone on this site. This will be our second wood stove,as we have a Regency HI300 insert in our fireplace. The Englander will be installed in the basement. I am going with 2 45's from the masonry thimble -straight shot, (no bends) to the stove. The question I have is this, Is there a certain length of run (stove pipe) that you want to stay under? From the looks of it, I will need either 36" or 48" of stove pipe for where I want the stove positioned. I purchased double wall pipe for 45's and will be using double wall stove pipe as well. The 2 lengths mentioned were what is available through Olympia.
Any help or comments would be appreciated.

 

[velvetfoot]

I just put a couple of 45s in for my boiler. I think with the 45s you're stuck with the geometry you're given. The double wall stove pipe I got was adjustable. The mfr. says you can't cut the double wall. I think my sliding piece was 5' max. and I put in a baro damper for about 12" as well. I think the 45s are a good thing.

 

[Jags]

Length will be dictated by stove location. Unless there is some unique situation (like an abnormal horizontal run), just do what you gotta do.

 

[Highbeam]

I have 10 feet of single wall above my NC30 before hitting the class A chimney. I do believe that the manual had some guidance about pipe lengths.

 

[begreen]

Tell us a bit more about the chimney. Is there a clay liner, if so what is the tile ID size? Or has a 6" stainless liner been dropped down the chimney? What's its total height?

 

[blades]

I would advise against the barometric damper- introduces cool /cold air to flue - creates creosote. Just a regular damper would be enough if worried about to high a draw. Bigger problem with basement installs is start up on a cold flue- back drafting until flue gets warm enough to operate correctly. Single story you will have some 25-30 ft of flue length. You do not want to be feeding the exhaust of the stove into a larger flue nothing good will come of that.

 

[Skitheeast]

Thanks for all the responses. We will be venting into a 8X12 clay flue. Chimney was built in 09' - Exterior chimney around 25-27 feet tall or so. Was not planning on putting in a baro.

 

[begreen]

If the 8x12 is 7"x11" ID it should be lined with an insulated stainless liner. 77 sq in is too large for a 6" flue requirement.

 

[Skitheeast]

Great. Thanks everyone for your responses. I will probably line the clay flue with a ss liner before using this winter. My chimney guy told me that I may not be able to get a 6" liner down the flue? Would I be able to go with a 5.5"? What about those pre-insulated liners that are out now?

 

[blades]

Should not be a problem with the 5.5 with that length of flue. Of course you will need a reducer to adapt the 6" stove outlet.