Advice needed on bending lineset

Discussion in 'HVAC Heating & Cooling' started by jfls49, Nov 17, 2012.

  1. jfls49

    jfls49 New Member

    Joined:
    Nov 9, 2012
    Location:
    Prospect, PA
    I've pulled out an old 7/8" R-22 lineset and replacing with a 1 1/8" R-410A lineset. I'm running the new lineset myself and a local HVAC guy is going to complete the install of my new heat pump and air handler.

    My first question involves bending the new lineset and installing the same method of the old: is there tool that the HVAC contractor will have to do the necessary 90 bend with the new lineset already in place in the ceiling? My thought is probably not so what about the 1 1/8 line being cut and 90 degree elbow used to bring the tube down toward where you see the old line going out through the cinderblock? I can notch out more of the hole to give more access for a brazing tip.

    I am also considering running the 1 1/8" tube straight out the wall and have the bends on the outside of the house.

    Thanks for any advice in advance.
     

    Attached Files:

    Last edited: Nov 18, 2012
  2. jimbo

    jimbo Plumber

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    Aug 31, 2004
    Location:
    San Diego, CA
    Perhaps take the hint that this work should be left for your pro.
     
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  4. nukeman

    nukeman Nuclear Engineer

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    I've done this myself, but if you are getting a pro to install the rest, you might as well have him do the lineset as well. I can't imagine that it would add much to the cost. They do have tools to bend the lineset, but they may use an elbow instead, depending on how much room they have, etc. Another thing to remember is if you rolled out the soft copper, it will start to "work harden" as you mess with it and it will become difficult to bend.
     
  5. BobL43

    BobL43 DIY Senior Member

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    Long Island, NY
    For what its worth, it looks like the end of that line is uncapped; not a good idea to let any debris fall into it:eek:
     
    Last edited: Nov 21, 2012
  6. jfls49

    jfls49 New Member

    Joined:
    Nov 9, 2012
    Location:
    Prospect, PA
    That is the old lineset

    I left it in the wall, if it was the new lineset we wouldn't be having this conversation

     
  7. BobL43

    BobL43 DIY Senior Member

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    Long Island, NY
    Looks brand new!
     
  8. kyleanderson

    kyleanderson New Member

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    Jan 19, 2013
    Location:
    manchester, kentucky
    our line set are cap and dry. outside air has water droplets and 410a and water is like electric and water, thay will mix but the out come isnt good. first of all looks like an old unit. the lineset did have a bend the last picture has the bend but isnt long enought and turned down, and the 1 1/8 line geo just what size unit do you have there? and there are tube benders for the soft copper that you have. any hvac man without one i cant see how he does most jobs. 7/8 in hard but 1 1/8. that do make spring look trick you slip over the tubing and bend and move bend and move i have some but never did use them to slow. I can see the old old timer filling with sand and bending the sand and bending, but a very bad idea. lol lol. I think you are going to have a troubled system and you will pay each and every month for the way its installed by the way of electric and break downs. I wish you the very best of luck sit.
     
  9. TeXan

    TeXan New Member

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    jfls
    here is a nice link. if the bend is too sharp an elbow should be placed.
    https://www.alpinehomeair.com/related/AC Installation Guide Update.pdf

    I'm thinking of updating my furnace and AC also. mostly you just set the furnace in place and the A frame evaperator and then the line set.
    the brazing / silver soldering maybe should be done by pro but I suspect they just have the right tools and a little experience.

    Bending tool
    http://www.homedepot.com/p/TEKTON-T...dbG25nXeHT_BYQwhgNkD4aAp5P8P8HAQ&gclsrc=aw.ds

    how to use tubing bender


    bending spring
    https://www.amazon.com/Spring-Tube-...&sr=8-3&keywords=copper+tubing+bending+spring
     
  10. WorthFlorida

    WorthFlorida USCG escorting cruise ship leaving Port Everglades

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    Oct 28, 2009
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    Retired
    Location:
    Orlando, Florida
    My question is why did you feel you have to increase it to 1 1/8"? What size is the liquid line? What is the approx. length from the A coil to the out compressor? What tonnage are you installing. I know this is not your question but in AC over sizing is not necessarily better. It states it in this .pdf file. Here is a easy to understand document in line sizing.
    https://sunpump.freshdesk.com/helpdesk/attachments/6004330025

    Have your AC guy do it. You cannot bend 1 1/8" that much to make 90* bends in tight or in a short span. The compressor and at the air handler will always will have elbows to to make the connections no matter what the size is. It's rare that the lines from the wall go straight into the AC connections.
     
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