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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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    3,998

    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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    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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    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
  10. Replies
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    2,918

    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...
  12. Replies
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    2,918

    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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    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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    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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    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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    1,483

    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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    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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    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?
    ...
  26. I should state that water furnace is more...

    I should state that water furnace is more expensive so I am weighing the payback. Do the systems really achieve the stated EER or is that only under lab conditions and they really are equal.

    Hard...
  27. A couple things I'd like to know, can the current...

    A couple things I'd like to know, can the current sensor be tested or bypassed to see if it a source of the trouble?

    You can bypass the current sensor. If low pressure goes away and unit is not...
  28. Replies
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    2,594

    whistle

    I'm with the other installers it should not whistle.
    You would also have to define " water not chilled enough " what kind of temps are we talking about in and out of the unit?
    The noise has to be...
  29. Replies
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    2,555

    Good detective work! Commonly referred as to as...

    Good detective work!
    Commonly referred as to as troubleshooting... when all else fails get out the volt meter and check for voltage.
    I can't tell you how many calls I've taken for things like...
  30. Replies
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    condensation

    Condensation is common in some units especially in humid a basement but that sounds excessive. I would have a competent GEO professional evaluate this.
  31. Replies
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    Find out what kind of training and certifications...

    Find out what kind of training and certifications they have, make sure they know how to install a geo unit properly. A good unit installed wrong turns into a bad unit very quickly

    That's some...
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    Repairs

    Well I guess you got me there, but nobody said anything about repairs.

    If you bury water or sewer next to a loop you will likely need repairs too.

    Moral of story.... keep the loop in it's own...
  33. Replies
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    Why not

    While you are at it you could also add water, sewer, phone, cable, and gas.
    One trench for everything.
    What could possibility go wrong with that.
  34. Replies
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    wells

    If we're going to "shoot from the hip" here why not go 7 wells @ 175ft.
    Gets the job done without the extra bore hole.
    Easier to header and better Re numbers.

    Or 6 wells @ 200ft for that matter.
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    capacitor

    Is this a 2 speed model?
  36. Replies
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    A 2 stage GSHP will help by reducing cooling...

    A 2 stage GSHP will help by reducing cooling capacity 30% in first stage.
    There are other choices for back up heat (wood burner, fireplace, solar) dependent on energy costs.
  37. I believe you are referring to a "standing column...

    I believe you are referring to a "standing column well" one the options of an open loop system where water is returned to the same well.

    The fact that is has run for 20 yrs is testament in itself....
  38. well water

    You have three things to consider when using a well.

    1 water quality
    2 water quantity
    3 where the water goes after it leaves the GSHP

    Some people drill a second "return" well to deal with #3....
  39. Replies
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    1,573

    pumps

    I never heard of pumps pulling as much as a 3 ton GSHP.
    What pumps are you using? How many and voltage?
    Sounds a bit over-sized to me.
  40. Replies
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    The problem comes with the ground loops, which we...

    The problem comes with the ground loops, which we currently don't have.

    IGSHPA would be a good source for ground loop information.
    They have a new "updated" install manual.
    Residential and...
  41. Replies
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    1,946

    Synergy 3D

    The synergy 3D is a bit more complex than a normal GSHP.
    I would make sure you have a thorough understanding of it's operation.

    Is familiarization with components, water/loop...
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    pressure drop

    pressure drop tables enclosed
  43. Replies
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    to make sure the correct amount of return air...

    to make sure the correct amount of return air flow still occurs on the upper floors


    The existing RA should be modified to accommodate more air flow.
    Adding another 20 X 20 in the basement...
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    There is a huge square duct box (36" x 36")...

    There is a huge square duct box (36" x 36") attached to the unit's side. They attached a 20" x 20" duct box to it on one side and that is where all the current filtered return air comes form. I was...
  45. Replies
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    noisey

    The HVAC installer has all duct returns going through a Fresh-Aire UV purity system that has a 4" x 20" x 20" filter. I've noticed that as the filter gets slightly dirty the fan speed on the unit...
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    3,709

    Tstat

    As long as a Tstat meets staging requirements and is heat pump ready it will work. A Climate master Tstat may be able to read fault status (depending on model). Honeywell has a new GEO friendly Tstat...
  47. Replies
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    Temp probe

    May I suggest you get an electronic with 2 wired probes and strap them to the water lines inside the unit cabinet under the insulation. That way you can leave them there without disturbing the P/T...
  48. Thread: command aire

    by teeball57
    Replies
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    1,082

    Are you referring to the coax?

    Are you referring to the coax?
  49. Replies
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    1,700

    Hydroheat

    You can got to their website with model and serial number and send them an E-mail under contact us.
    The manufacturer date is in the serial number with most units.
  50. Replies
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    Well said. Some GEO manufacturers are working...

    Well said.
    Some GEO manufacturers are working with VRV and I suspect you'll see one in the next 1 - 2 years.
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