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Questions On Selkirk DT Venting

Post in 'The Pellet Mill - Pellet and Multifuel Stoves' started by DonD, Nov 26, 2012.

  1. DonD

    DonD Member

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    I want to use black Selkirk DT vent pipe to give my upstairs 2nd stove a wood stove look and also a convienent OAK connection. The stove will vent out a clay thimble into an unused flue I had put in when the house was built and then into flex vent out to the termination at the top of the chimney. I think I have good handle on everything I need except for the Selkirk DT to clay thimble to flex connection. I can't figure that part out based on Selkirk's literature. They make a 'Masonary Chimney Conversion Kit' (4DT-MCK) but I'm not sure how that fits in or if it's even the right part for the job. I also want to incorporate a 45 deg elbow at the stove to try to center the vent on the stove.

    I don't have pictures (yet :cool: ) but will put some up as I proceed. Meanwhile I will describe what I think I need, starting at the stove. Please correct me if I got it wrong and help fill in where you can.

    1) stove
    2) appliance adapter (3VP-PC???)
    3) horizontal 45 deg elbow (3VP45EL)
    4) vertical 3" to 4" clean out tee (4VP3T)
    5) vertical pellet to DT pipe adapter (4DT-VPSA)
    6) vertical length of DT pipe/adjustable pipe
    7) 90 deg elbow to masonary thimble (4DT-EL90SB)
    8) something to connect the 90 deg elbow
    9) something to pass through the clay thimble
    10) something to connect to the flex vent
    11) flex vent (which I already own) up the flue
    12) termination (something to allow OAK air into the flue)

    I've seen 2 part flex connectors made for connecting inside the flue where there is no access. They work by connecting 1 part into the end of the flex and dropping it down the flue and the 2nd part goes into the clay thimble and connects with the 1st part, forming the tee inside the flue. Is there something like that that works with Selkirk DT?

    EDIT: like this, about 1 minute in:



    I plan to draw OAK air from the flue so if I use the Selkirk 'Masonary Chimney Conversion Kit' (4DT-MCK) will that be my OAK air inlet?

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  2. DonD

    DonD Member

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  3. DonD

    DonD Member

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    Anyone?
  4. kinsmanstoves

    kinsmanstoves Minister of Fire

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    The main thing with two in one pipe for a pellet stove is excessive cooling to the exhaust gasses. I still refuse to use any two in one pipe. Those gasses need to be above 190 degrees or creosote may form.

    Eric
  5. smoke show

    smoke show Guest

    I have 26ish feet of vertical venting, all DT, not a trace of creosote.

    Sorry, Don can't help with your transition question. Might give Selkirk a call?
  6. gfreek

    gfreek Minister of Fire

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    I tend to agree, I have some creosote the last 3 feet of pipe. Probably would not use again.
    I called Selkirk and not a problem getting someone to answer questions..
    kinsmanstoves likes this.
  7. Lowarea

    Lowarea New Member

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    Horseheads NY
    DonD - Did you resolve your design question?

    I'm a newbie facing a similar install. I'd like to bring Fresh air back down a masonry clay lined chimney that is on an interior wall. The stove is in finished living space so a nice clean solution to the O.A.K is preferred.

    Is using all DT a possibility? I'm guessing it is very expensive, meaning using flex in the chimney is far cheaper, yes??
  8. smoke show

    smoke show Guest

    No doubt. As far as I know, DT is the most expensive pipe on the market.

    Why not use a liner and bring the OAK down from the top?
  9. Lowarea

    Lowarea New Member

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    I would like to do just that. As in the above photo, i have a brick wall behind the stove and would like to bring outside air through the 7" thimble plus have 3" vent going out through the same 7" thimble and not be DT all the way.

    Is there a fitting that will accomplish this?

    2" flex from the top of the chimney all the way to the back of the stove plus 3" exhaust going out.
  10. Don2222

    Don2222 Minister of Fire

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    Hi

    Since wood pellets do not have bark, there is alot less creasote than wood. Also I do have the experience of doing a DT install. I used the Up & Out termination kit with a few straight sections and wow there is certainly never any caked ash in the burn pot from damp OAK air. I really like this stuff.

    However I never worked with the 4DT-MCK masonary conversion kit. It really seems impossible to tell how it works from what I have seen on the web.

    Maybe you could call Selkirk or just order up this kit and please let us know how you get the OAK air down the chimney?

    See my install pics and info here.
    http://www.hearth.com/talk/threads/hr-wp-up-and-out-dt-install-with-custom-lighted-hearth.90555/
  11. DonD

    DonD Member

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    I'm not 100% resolved but I have been in email and phone contact with Selkirk and I think it's going to work - just need to understand the last couple of connections.

    A 10,000 ft overview of what I plan to do is: a) Selkirk pellet pipe from stove to the DT pipe, b) DT pipe up and into chimney thimble, c) the Selkirk 4DT-MCK "Masonry Chimney Conversion Kit" Don mentioned through the chimney thimble, d) somehow (and this is where I don't fully understand) connect the conversion kit to a standard 2-part flex pipe connector and e) run the flex up the chimney to the Selkirk termination.

    It sounds to me, from talking to Selkirk, that the 4DT-MCK "Masonry Chimney Conversion Kit" is a two part adapter - one end is for the thimble and the other end is for the termination at the other end of the flex. What I want to do is use the flue for OAK air. They said that the thimble end of the conversion kit has the air inlet and I hope that the termination end allows OAK air into the flue so it can travel down the flue to the thimble end of the conversion kit. See page 11 of this pdf:

    http://www.selkirkcorp.com/WorkArea/showcontent.aspx?id=1878

    So I think it will work once I get a better understanding of the masonry conversion to flex connections and the termination air inlet. I'll post more info when I get it. You might want to call the directly. Karen is the tech and she knows her stuff. She can be reached directly at the 740-385-5666 number from the Selkirk web site contact page.
  12. Don2222

    Don2222 Minister of Fire

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    That seems to explain it! The flex pipe in the chimney is for the flue exhaust and the space around the flex pipe is used for the OAK air.

    I was thinking of running DT pipe inside the chimney! LOL It would work but be more costly and harder to install! LOL

    Thanks for explaining that, I may be doing it to my house!
  13. Don2222

    Don2222 Minister of Fire

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  14. DonD

    DonD Member

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  15. Don2222

    Don2222 Minister of Fire

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