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  1. #1

    Long lineset concerns?

    My installer is planning to place the AC condenser (Goodman SSX160601) on a concrete pad behind the house. To connect it to the coil in the attic, the lineset would require a 30 ft rise, and then about 40 ft across the attic.

    I wondered about the 70 ft length of the lineset, and he said that as an alternate, he can put the condenser on the garage roof, which would result in a 12 ft rise and 10 ft in the attic. But this would require building a support structure on the roof, which he seems reluctant to do. It would also be very visible from the backyard, which I don't like too much.

    Should I be concerned with the long lineset and go for roof mounting, or should I go with the original plan? Are there any special steps he needs to take for the long lineset (he mentioned using 1 1/8" line, a hard start capacitor, and crankcase heater)?

    Thanks,

    Mark

  2. #2
    Join Date
    Mar 2005
    Location
    Suppy NC
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    with a run like that i would also recomend a pump down selenoid sized for the tonage and type refrigerant at the evap coil

  3. #3
    And you would go with the long lineset run over the roof mounting?

  4. #4
    Join Date
    May 2002
    Location
    Houston Texas
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    6,316
    Your contractor needs to check on the refrigerant line sizing chart, I don't think the two stage scroll can handle a verticle lift of more than 20-feet. I haven't had to deal with this in a long time and don't have access to literature right now.

    I do agree with the CCH, not so much on the start assist as long as the system has a timer. The LL solenoid is a very good idea I would even put the solenoid on a 10 or 15 second delay.

  5. #5
    Join Date
    Mar 2005
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    Suppy NC
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    Quote Originally Posted by classical View Post
    Your contractor needs to check on the refrigerant line sizing chart, I don't think the two stage scroll can handle a verticle lift of more than 20-feet. I haven't had to deal with this in a long time and don't have access to literature right now.

    I do agree with the CCH, not so much on the start assist as long as the system has a timer. The LL solenoid is a very good idea I would even put the solenoid on a 10 or 15 second delay.

    I have heard this before but was never explained why
    what is the reason for the 10/15 second delay?

  6. #6
    Join Date
    May 2002
    Location
    Houston Texas
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    Quote Originally Posted by tinknocker service tech View Post
    I have heard this before but was never explained why
    what is the reason for the 10/15 second delay?
    To have liquid to the coil mostly, there is more to it but I don't remember.

  7. #7
    Join Date
    Jan 2004
    Location
    Lancaster PA
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    67,717
    Maybe, a CCH.
    No real reason for a LLSV.

    He should check with Goodman to see what they say about teh line set length, and what should or shouldn't be done in the way of adding or not adding componets.

    After all, they are the ones that can void warranty.
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    How many times must one fix something before it is fixed?

  8. #8
    Join Date
    Apr 2007
    Posts
    6,285
    Long line set recommendations from Goodman don't start suggesting accessories until 80 ft.

    Is it R-410A or R-22?

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