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  1. #1
    Join Date
    Mar 2004
    Posts
    171
    I read the post linked below as it pertains to heat pumps, and I'm pretty sure the answer is the same for a furnace to condenser line set. On a new install, the black foam insulation on the vapor line has been sliced along its length every 6-12 inches or so across the diameter of the insulation. The copper line is exposed. The slicing almost looks intentional, but it could be that the line/insulation got stuck on something when they were pulling it between the condenser and the furnace. Can this be fixed with duct tape, or should I request new insulation? Thanks.

    http://www.hvac-talk.com/vbb/showthr...threadid=97690

  2. #2
    Join Date
    Aug 2006
    Location
    High Point, NC
    Posts
    155
    It can be taped back where it is not missing insulation. They make a foam insulating tape that might be better. In a tight fit it is easy for the insulation to get torn when trying to install the new lines.

  3. #3
    Join Date
    Jul 2000
    Location
    Northern Wisconsin
    Posts
    1,976
    Call the installer and ask when they're coming back to finish the installation. IE: To fix the damaged insulation.

  4. #4
    Join Date
    Jul 2006
    Location
    Connecticut
    Posts
    271
    Sounds like a good place to use that pre-slit insulation with the pre-applied contact cement and a strip you pull to expose the cement when ready to seal it. Can come out neatly if careful.
    Tom D. - Long-time Journeyman from CT.

    On account of being a democracy and run by the people, we are the only nation in the world that has to keep a government four years, no matter what it does.

  5. #5
    Moisture from condensation can leak from those cuts if exposed....but duct tape will not work for long before it rots from the moisture. You really should just ask the installer to take care of it for you, sure he won't mind.

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