Outside venting

XXV Posted By XXV, Aug 6, 2019 at 9:43 PM

  1. XXV

    XXV
    New Member 2.
    NULL
    

    Aug 6, 2019
    1
    0
    Loc:
    Maine
    I just purchased a Harmon XXV, planning to vent it through my chimney, do I need outside air or will chimney have enough draft. (1500 ft Cape, pellet stove in living room, chimney runs from basement through attic, three floors. Yes I have separate ceramic flues in chimney, one for furnace, one for stove.)
     
  2. Darkwing

    Darkwing
    Member 2.
    NULL
    

    Oct 11, 2018
    109
    10
    Loc:
    New Jersey
    Hello...
    Since your pellet stove is forcefully aspirated, the draft in the chimney should not be a concern since the stove is pushing the gasses out by itself...
    The Outside air is "just" a nice feature so that the stove does not pull cold air into the house to replace the air that left the house by fan through the chimney...if you have a "good" house (ach50 below 2) you should consider the outside air due to potential vacuum issues by tight house not replacing vented air fast enough...
    Even i do not have such "good" house yet, i have the outside air hooked up, that that i dont have a constant air stream coming cold from other rooms towards stove...
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
  3. johneh

    johneh
    Minister of Fire 2.
    NULL
    

    Dec 19, 2009
    2,141
    935
    Loc:
    Eastern Ontario
    That's why I have an OAK (outside air kit)
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
  4. Oregun

    Oregun
    Member 2.
    NULL
    

    Jan 12, 2017
    55
    6
    Loc:
    Oregon
    I installed our XXV into existing 8" metal chimney and it runs fine without the outside air kit.
    Our house is not very tight however.
     
  5. Overfireinthehole

    Overfireinthehole
    Feeling the Heat 2.
    NULL
    

    May 5, 2017
    317
    72
    Loc:
    Miller MO
    It depends on who you ask but my professional opinion is always that it depends on how tight your house is and how high up you live. If your house is not spray foamed and is less than 1500’ BSL and your not putting it in a box basement or manufactured home, then you probably will be fine without.
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
  6. Talegas

    Talegas
    Burning Hunk 2.
    NULL
    

    Oct 26, 2016
    145
    49
    Loc:
    Metrowest MA
    My house is not airtight and my stove is in the basement. One season i was not using an OAK, the second season I was venting from the chimney (the clean out and left the ash dump and damper open while using those doors closed in the fireplace). I found no difference whatsoever. I liked the idea of cycling the air in the basement, so no OAK for me.
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
    Overfireinthehole likes this.

Share This Page