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Bruce

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Posts: 112
Reply with quote  #11 
JP

I ran my return back down the same way as your diagram (mirror actually) and it works fine for years.  Maybe a little more noise inside the wall, but I find it comforting to hear in my office during a cold sunny day ;-)\

Bruce

Bruce

Registered:
Posts: 112
Reply with quote  #12 
Apdate:  Actually, I ran the return pipe down first and then crossed back to the other side along the bottom. I figured that way it would drain back better...but I am no scientist.  
JPWright

Registered:
Posts: 19
Reply with quote  #13 
Thanks for the encouragement Bruce. What is your head and what pump do you use?
JPWright

Registered:
Posts: 19
Reply with quote  #14 
Willie, I like the idea of a small pump given the problems you pointed out with check valves. As far as freezing goes, I can just add some antifreeze to the water.

What is your favorite pump/panel combination for this long hizer, 110 gallon system?
stmbtwle

Avatar / Picture

Registered:
Posts: 2,804
Reply with quote  #15 
This one is probably the "standard"
https://www.amazon.com/GPM-11-5-LPM-Solar-Threads/dp/B0075J6S3W/ref=sr_1_5?ie=UTF8&qid=1482440125&sr=8-5&keywords=solar+pump

However I don't use it on account of cost. There are any number of pumps out there on ebay that work fine. Most don't have US tapered thread but the diameter and pitch are the same and they will mate up just fine with a bit of thread tape.

What I look for:
Brushless (no bearings or brushes to wear out)
Head (3-5 m is common though you may want more depending on installations)
12-24 volts (already discussed)
Submersible (I don't submerge them but I do mount them outdoors)


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Solar is like the wind. It may be free, but putting it to work isn't!
Willie, Tampa Bay
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