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  1. This "opportunity" is missed by most contractors...

    This "opportunity" is missed by most contractors and provides highest efficiency and comfort levels.
  2. Replies
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    You should have outdoor reset with W to W...

    You should have outdoor reset with W to W geothermal and lock out the W signal above a set temperature. How do you get 2 ton air heat during spring and fall?

    You will need more than this...
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    3,878

    By the model # I assume this is a 3 ton unit. You...

    By the model # I assume this is a 3 ton unit. You will need 6 GPM for heating in your area. In summer it could be reduced a little 4-4.5 GPM. A larger tank would help but the 1/2 HP pump may not do...
  4. The commercial line incoperates the FX10 control...

    The commercial line incoperates the FX10 control board by Johnson Controls for BAC and uses an external MUI to communicate....but that's a whole new ballgame.
    Residential Envision models use the...
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    2,847

    The whole point is proper backfill for good heat...

    The whole point is proper backfill for good heat Xfer. You wouldn't put in a vertical loop without grouting to get heat Xfer.
    IGSHPA wrote the book on loops not the manufacturers.
  6. I'm not aware of a "special tool" required to...

    I'm not aware of a "special tool" required to read faults or set blower speeds on the Envision as these functions are performed by moving the dip switches. However knowledge of the board and dip...
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    That's the problem with this industry too much...

    That's the problem with this industry too much misinformation and opinions.
    The best loop for any installation depends on location survey and soil conditions.
    If sized and installed properly all...
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    2,847

    Pardon my ignorance but.... just what is "cracker...

    Pardon my ignorance but.... just what is "cracker dust"?
  9. TxTurbo is right The 3 ton Envision is also...

    TxTurbo is right

    The 3 ton Envision is also the most efficient unit they make
    Enhancing your ROI
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    2,847

    I'm curious 5ft wide trench what or how do you...

    I'm curious 5ft wide trench what or how do you dig that @ 5-6ft deep.
    Most diggers around have around 40 inch buckets.
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    Slinky loops are put in a trench around 125ft...

    Slinky loops are put in a trench around 125ft length for 600ft of pipe (extended slinky). Deeper the better but cost and safety become the issue. The trenches are separated by at least 10ft

    Your...
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    2,847

    Dealers have a program they use for loop length...

    Dealers have a program they use for loop length by entering heat loss/gain loop type and soil conditions.
    An accurate heat load is imperative don't size by existing equipment!
    The program will...
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    1,465

    Your not the first one to ask the question but...

    Your not the first one to ask the question but that is a pretty good answer.
    The idea of a loop is to spread the pipe to cover a large area of ground to extract or reject the needed BTUs. Typically...
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    7,174

    water into the unit 80f water out 125f Normal...

    water into the unit 80f water out 125f

    Normal split is 10 - 15F in cooling depending on flow.

    You have a flow and or fouling issue.
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    2,901

    I'll go with Bergy on this one two 50 gal should...

    I'll go with Bergy on this one two 50 gal should work fine for your needs.
  16. Replies
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    1,441

    The unit is sitting on nine 3" thick foam blocks...

    The unit is sitting on nine 3" thick foam blocks which are sitting inside a metal drain pan, which is sitting on the attic floor, which is directly above my kitchen.

    I would use 1 piece to support...
  17. Replies
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    5,423

    I suggest a data logger on EWT & LWT you need...

    I suggest a data logger on EWT & LWT you need some exact numbers.
    You are making too many assumptions. It sounds like a water problem be it temp, flow, or fouling.
  18. Replies
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    5,423

    I'm curious why you replaced the coil? Was it...

    I'm curious why you replaced the coil?
    Was it fouled (dirty)?
    You are running at the edge water inlet temps, most rated to 110F @ 3 GPM per ton. Increased water flow will help.
    High air flow will...
  19. I don't know what information you can "glean"...

    I don't know what information you can "glean" from a short looped unit that will tell you what size unit to replace it with, other than loop size. Rule of thumb is 150 ft well or 300 ft of pipe per...
  20. - Are you saying that new units can do less with...

    - Are you saying that new units can do less with the same loop than the older ones -- they need larger loops to be more effective?

    No not what I'm saying the new units operate more efficiently.
    ...
  21. The heat loss/gain load calculation is very...

    The heat loss/gain load calculation is very important and the loop is designed around those numbers....so make sure the loop is sized properly.

    If the upstairs did not heat and cool properly...
  22. I have weighed everything and I am going to...

    I have weighed everything and I am going to install a geocomfort 2 stage 3 ton unit with three 200' vertical wells containing 3/4" piping, A desuperheater, dual geo double pump flow center, an...
  23. I don' think the capacity would be that much...

    I don' think the capacity would be that much different but the COP and EER would be.

    I would suggest a proper load calculation and loop evaluation by a competent geo GSHP installer.
  24. Curious why you say a new control board won't do...

    Curious why you say a new control board won't do any good? Is it because the control board is being driven by the Intellizone board?


    That is correct. Intellizone is controlling the fan...
  25. Both high and low 40A relay contacts were pitted....

    Both high and low 40A relay contacts were pitted. I cleaned them up and they are working fine, but the problem still occurs. Are the relay contacts replaceable or do you replace the whole relay?
    ...
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