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Thread: Venting

  1. 10-15-2013, 06:12 PM #1
    11crv
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    Venting

    Im going to replace my rheem modulating with a new Airease mod. Furnace this weekend. My current setup is single piped with 3"about 20' with a 2" termination through the wall. The venting is short so i can stick with 2" or should i do 3"? I guess my question is is larger better for a short run? Are there pro vs cons for short 3" runs? What would you do?
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  2. 10-15-2013, 06:39 PM #2
    martyinlincoln
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    Follow the installation instructions.
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  3. 10-15-2013, 07:51 PM #3
    11crv
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    The install manual says i can use something like 100' give or take of 2" or 3". I will use 4 elbows total. Just wondering if one size is better than the other being that i have such a short run.
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  4. 10-15-2013, 08:48 PM #4
    second opinion
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    Quote Originally Posted by 11crv View Post
    The install manual says i can use something like 100' give or take of 2" or 3". I will use 4 elbows total. Just wondering if one size is better than the other being that i have such a short run.
    Smallest for short run
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  5. 10-16-2013, 04:31 AM #5
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    LibertyTree
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    Who makes Airease?
    America; first we fight for our freedom,
    then we make laws to take it away.

    -Alfred E Newman
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  6. 10-16-2013, 07:15 AM #6
    11crv
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    Lennox
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  7. 10-16-2013, 09:03 AM #7
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    kdean1
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    Pardon my bringing it up, but this shouts DIY to me even though it is posted in tech-to-tech. I would expect any technician to know what the OP is asking.
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  8. 10-16-2013, 09:44 AM #8
    second opinion
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    Quote Originally Posted by kdean1 View Post
    Pardon my bringing it up, but this shouts DIY to me even though it is posted in tech-to-tech. I would expect any technician to know what the OP is asking.
    I would expect them to know also but not necessarily reality. Reading the instructions and following them is a huge issue with catagory 4 equipment.
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  9. 10-16-2013, 11:49 AM #9
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    JKopp
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    I found this one yesterday on an estimate to replace the existing furnace. I bet it was like this from day one. Then I am looking at it more, why did the tract guy put duct tape on the connection?

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  10. 10-16-2013, 03:40 PM #10
    11crv
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    All I wanted to know is if the furnace will benefit from one size or the other. There is only a 20' length difference between the 2" and 3". I am s tech and help the installers when we get swamped. From a performance stand point which is better or doesn't it matter. I'm just curious.
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  11. 10-16-2013, 04:49 PM #11
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    JKopp
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    Sorry I ment to post the photo on another thread. Your 2" should be fine. But as you say 3" is ok too. I would run 2" if book says it's ok.
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  12. 10-17-2013, 03:41 AM #12
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    LibertyTree
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    Quote Originally Posted by JKopp View Post
    I found this one yesterday on an estimate to replace the existing furnace. I bet it was like this from day one. Then I am looking at it more, why did the tract guy put duct tape on the connection?

    Looks like it was too short and had 1/2 of bite so duct tape was the hack. A mouse ran by and it came loose. That's criminal
    America; first we fight for our freedom,
    then we make laws to take it away.

    -Alfred E Newman
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  13. 10-17-2013, 11:16 PM #13
    cduff
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    20 ft + 4 ells =60ft, to me that's not a short run, 3" JMO......
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