"Botched" Loop Field
Last Post 12 Oct 2013 04:46 PM by AZ-gshp. 7 Replies.
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AZ-gshpUser is Offline
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24 Sep 2013 01:29 PM
First of all I posted about 3 weeks ago regarding high EWT that went up very fast in the first 30 minutes.
Lots of you responded and I want to say how much it was all appreciated and helpful.   Thank you

One person responded and I did not go back to find out who but they simply said your Loop Field install
was "Botched".      So for the rest of this post can we just Assume  that the person was spot on.

It is botched because of the grouting method used, pouring it in from the top versus the correct method bottom up.
I have had the load calc. looked at and am told I have plenty of feet in the ground for climate data,
soil type etc.    Roughly 5 holes at 200 feet each.   5 Ton TTV064 for practical purposes but it is badged as a Bryant.

But back to the assumption:   the 5 holes are performing at some level but not well.  They were
connector together in a trench and 2 lines ran in another trench into the garage and ultimately the unit.

Is this idea completely brain dead???

I bore another 200 foot hole, run it into my garage where unit and other lines are located.
Header the new hole to the two existing lines with some valves and the other things to
do it correctly inside the garage.   Of course grout this new hole correctly.

Thus I overcome my loop field under performing by just putting more feet in the ground.

Before someone asks how I know I just need one 200' hole.    I don't  -- it is for now just an assumption
that I would like some feedback/expert advise.




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25 Sep 2013 12:33 AM
No, this is doable.
www.buffalogeothermalheating.com
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25 Sep 2013 01:20 AM
Agreed its doable but you need to make sure you reverse return it when adding it in, which should be easily doable if the loop is added in a different area than the main loop field. Ultimatly it comes down to how many BTU's you can extract from the ground vs how many your house needs to heat. If there is not enough pipe grouted then you need to add more to get the heat desired. In most areas 200' ft per ton of vertical drilling is about right, but thats a rule of thumb and I never use rule of thumbs ;-)
Visit my Youtube channel for product reviews and customer testimonials http://www.youtube.com/user/skyheating1
http://www.welserver.com/WEL0626/
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25 Sep 2013 06:13 AM
Agree with everything, but the statement about the grout. Data is clearly indicating that pipe in the ground will not support your load. Reduce the load or increase pipe. I have added loops to existing fields before and had good results.
Eric
Eric Sackett<br>www.weberwelldrilling.com<br >Visit our Geothermal Resource Center!
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25 Sep 2013 11:19 AM
I agree too.
I would try to keep it as close to 200" as possible to help keep as balanced flow as possible.
Dan Callahan
Www.CallahanWellDrilling.com
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11 Oct 2013 01:44 PM
Or you could go with closed loop, air-to-water heat exchanger auxiliary that would supplement your loop field.  Cost savings is considerable rather than drilling!  PM with your email address if you are interested. 
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12 Oct 2013 03:13 PM
ALA Egg????
Eric Sackett<br>www.weberwelldrilling.com<br >Visit our Geothermal Resource Center!
AZ-gshpUser is Offline
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12 Oct 2013 04:46 PM
Thank you to all that replied. And to the person that wrote ALA Egg?? -- I am sorry but count me clueless. I have all the answers I need on this one.
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