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  1. #1
    Join Date
    May 2012
    Location
    Grand Junction, CO
    Posts
    236

    Ground loop purging

    On a geo call and found a bad compressor. Saw this on the flow center and this note written on the wall above it from this past january. Someone tried to purge it with a garden hose
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  2. #2
    Join Date
    Nov 2006
    Location
    Athens, Ohio
    Posts
    1,888
    DIY flush cart.

  3. #3
    Join Date
    May 2012
    Location
    Grand Junction, CO
    Posts
    236
    Quote Originally Posted by kdean1 View Post
    DIY flush cart.
    Yep. There was almost no pressure and i could hear the air in the lines

  4. #4
    Join Date
    May 2000
    Location
    Urbandale IA. USA
    Posts
    4,940
    As captain jack sparrow once said "apparently there's a leak".
    .
    Those who dance, appear insane to those who do not hear the music.
    Those who believe, appear ignorant to those who do not know God.

  5. #5
    Join Date
    Jan 2013
    Location
    Henry county,ky
    Posts
    82
    Well if the person trying to purge the lines with a garden hose didnt get the air out of the hose then they injected more air into the system, thus creating false pressure readings because air compresses and water doesn't. Also the loop conditioner for loops works pretty good in stopping small leaks that otherwise would be costly to repair.
    " dirty filter??!!! Buts its only 2 years old" You never learn everything you need to know is this industry

  6. #6
    Join Date
    Oct 2012
    Location
    Torrington CT
    Posts
    82
    OK i have never done ground loop system before, How would purge out the system?

  7. #7
    Join Date
    Jan 2013
    Location
    Henry county,ky
    Posts
    82
    To purge the air out of a ground loop, you need a pump that can circulate the water. A bucket to pump the water from. Draw the water from your bucket thru the pump into the system, the outlet side would dump into the bucket. That way your air is forced out and replaced with the water. We have what's called a flush cart that has a 2 hp pump installed and a holding tank open to thr air(approx. 10 gal cap.) that way you can see the air coming out. Plus you know all the air is removed with the flush cart because you can shut the pump off and see if there is a rise in the water column(air in system will force the water up) but in your case a 5 gal bucket a 1/2 hp inline pump and some washer machine hoses will do the trick. Just make sure that you turn the 3-way valves on the flow center to isolate the ground loop from the unit. That make sure your water flow isn't short cycling thru the unit instead of the ground loop
    " dirty filter??!!! Buts its only 2 years old" You never learn everything you need to know is this industry

  8. #8
    Join Date
    Oct 2012
    Location
    Torrington CT
    Posts
    82
    so it is just like how i purge out a boiler system with a pump for antifreeze.

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