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  1. #1
    Join Date
    Sep 2002
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    Help me Hack a Geo -

    Existing house with geo was purchased by customer. Field-loop of unknown construction. Single pump. 36K R-22 Climatemaster pooped the bed at some point and was replaced by 36K R-410 Bosch. Pump has now failed. Existing pump is 37 GPM max and 37' max. I am no geo expert - but I have pumped some water around - and that seems HUGE to me. Unit charts state 6.1 feet at 9 GPM. In your opinions, is it possible that the field loop represents an additional 30' friction head?

    And, based on your wide and varied field loop experiences - what kind of friction numbers Would / might be likely / typical? I would ask for a Rule-Of-Thumb - but HVAC Marc kind of scares me.
    PHM
    --------
    The conventional view serves to protect us from the painful job of thinking.

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  3. #2
    Join Date
    Mar 2013
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    Billington Heights, NY
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    man, you're mean.

    this is all i have on geos:

    Experience - knowing when to get the hell out of the way and plug your ears. "Don't be a sissy. Turn it on!"

    Poodle Head Mikey - "the world is well populated with the unknowing and the uncaring and the stupid."

    Jtrammel - "I’m going to sell hvac systems derp derp derp"
    BBeerme - "every time he opens his mouth, he reminds me of a cow without the fart bag."

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  5. #3
    Join Date
    Sep 2002
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    Thread Starter
    Thanks! You just made me realize that I posted my question in the wrong place. <g>

    PHM
    -------


    Quote Originally Posted by HVAC_Marc View Post
    man, you're mean.

    this is all i have on geos:

    PHM
    --------
    The conventional view serves to protect us from the painful job of thinking.

  6. Likes HVAC_Marc liked this post
  7. #4
    Join Date
    Feb 2015
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    Not sure what pump you've got there, but I've got a Grundfos UPS 26-99 on my 4 ton ClimateMaster. All my readings say this pump covers almost all 4 ton and below closed loop applications.

    Just a geo homeowner here...

  8. #5
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    Sep 2002
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    Thread Starter
    This was a Grundfoss UP 26 116 but the closest I could find off-the-shelf to replace it with was a Taco 013.

    How old is your Climate Master?

    PHM
    -------


    Quote Originally Posted by stickman42 View Post
    Not sure what pump you've got there, but I've got a Grundfos UPS 26-99 on my 4 ton ClimateMaster. All my readings say this pump covers almost all 4 ton and below closed loop applications.

    Just a geo homeowner here...
    PHM
    --------
    The conventional view serves to protect us from the painful job of thinking.

  9. #6
    Join Date
    Feb 2015
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    Quote Originally Posted by Poodle Head Mikey View Post
    This was a Grundfoss UP 26 116 but the closest I could find off-the-shelf to replace it with was a Taco 013.

    How old is your Climate Master?

    PHM
    -------
    Tranquility 27 split installed in October 2013. In another forum, the reasoning for going to a 26-99 from a 26-116 was sound.

  10. #7
    Join Date
    Mar 2015
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    Hamersville, Ohio
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    Quote Originally Posted by HVAC_Marc View Post
    man, you're mean.

    this is all i have on geos:


  11. #8
    Join Date
    Mar 2015
    Location
    Hamersville, Ohio
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    Quote Originally Posted by Poodle Head Mikey View Post
    Existing house with geo was purchased by customer. Field-loop of unknown construction. Single pump. 36K R-22 Climatemaster pooped the bed at some point and was replaced by 36K R-410 Bosch. Pump has now failed. Existing pump is 37 GPM max and 37' max. I am no geo expert - but I have pumped some water around - and that seems HUGE to me. Unit charts state 6.1 feet at 9 GPM. In your opinions, is it possible that the field loop represents an additional 30' friction head?

    And, based on your wide and varied field loop experiences - what kind of friction numbers Would / might be likely / typical? I would ask for a Rule-Of-Thumb - but HVAC Marc kind of scares me.
    PHM, I Subcontracted with a Climate Master buddy in Cinti., Ohio for awhile, & if I'm remembering correctly 9GPM per ton was used in several cases.

    Did You try to run the Home Owner's address with the Climate Master Distributors in the area? I'm just wondering if they would be able to give you the Closed Loop data, as well as any data on the previous unit.

  12. #9
    Join Date
    Sep 2007
    Location
    edmonds wa
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    I take it there are no petes plug or a way to get the pressure and temp drop on the coaxial? Most geo mfgs put some decent charts for this in the paperwork.
    UA Local 32

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