docjenser's Recent Activity

  1. docjenser replied to the thread Washington Thermal expansion tank with geothermal DSH.

    Expansion tank is required by code (at least around here) in the hot water lines after the tank. In any case, cold water lines in, DSH...

    Feb 24, 2020 at 11:27 AM
  2. docjenser replied to the thread Where's the primary electric consumption in a geothermal system?.

    I would shoot for a 20F delta on the air side in C4, Pumping power is good. Loop looks very good. Your ductwork sizing looks good...

    Feb 24, 2020 at 11:16 AM
  3. docjenser replied to the thread Where's the primary electric consumption in a geothermal system?.

    1/2/6/10 is what I would recommend. Do you have an aid tool? If yes, what is the delta T over the air coil? And the delta T for the...

    Feb 23, 2020 at 6:37 PM
  4. docjenser replied to the thread New Hampshire Resonant Vibration: New Hydron Unit.

    The heat pump should be on the pad, but the pad should not be on cement blocks.

    Feb 23, 2020 at 8:08 AM
  5. docjenser replied to the thread Washington New GSHP s 3 stage and very happy.

    Your temps will decrease over the heating season. If your LWT is 34 now, it might be 28F in a couple of month. You need antifreeze in...

    Feb 23, 2020 at 7:58 AM
  6. docjenser replied to the thread New York Years to System payoff.

    The issue is that you rip out your existing infrastructure and replace it with a new one just for the savings. Yes, about $20K, upfront...

    Feb 23, 2020 at 7:48 AM
  7. docjenser attached a file to the thread Where's the primary electric consumption in a geothermal system?.

    We replaced a 6 ton dual stage TT27 climate master with (2) circulation pumps (26-99) with a 5 ton 7 series variable speed heat pump...

    TT27 6 ton replaced by 7 series 5 ton.jpg Feb 23, 2020 at 7:20 AM
  8. docjenser replied to the thread Where's the primary electric consumption in a geothermal system?.

    Check if you can slow down your fan, 11% are quite high. We are trying to have the fan consuming around 5%. you can save 6% on the fan,...

    Feb 23, 2020 at 7:07 AM
  9. docjenser replied to the thread Horizontal Slinky(s) in 21' Deep Excavation!.

    To all here. If your aux kicks in when your loop field is in the 30s, that means that your heat pump capacity is not large enough, not...

    Feb 23, 2020 at 7:01 AM
  10. docjenser attached a file to the thread Are there geothermal water heaters? (not desuperheaters).

    The problem is that you run your hot water off your radiant hot water. Thus your radiant has to be at least 120F. Look at the complexity...

    + DHW.jpg Feb 23, 2020 at 6:16 AM
  11. docjenser replied to the thread Missouri Choosing between St. Louis Bids - Price or Experience?.

    I don't know. Normally, unless you have a very leaky house, 1500 sqf sounds more like a 2-3 ton than a 4-5 ton, especially on a single...

    Feb 22, 2020 at 5:05 PM
  12. docjenser replied to the thread Horizontal Closed Loop Placement.

    OK...this is advise over the internet. I do not know your grout conductivity. Usually, in my area, 400-500 ft with 1.0 to 1.6 conductive...

    Feb 22, 2020 at 4:55 PM
  13. docjenser replied to the thread Loop balancing.

    Or you could just let the flow take its path. Keep in mind that even if the flow doubles, the pressure drop will quadruple. Meaning that...

    Feb 22, 2020 at 1:40 AM
  14. docjenser replied to the thread Are there geothermal water heaters? (not desuperheaters).

    You only heat the water when it drops below 95F and then only heat it up to 100F? If it is 98F it does not get heated? Let me ensure...

    Feb 19, 2020 at 4:20 PM