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Have you made your own outdoor insulated PEX lines

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Treecutter

09-23-2004 12:27:19




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I"m puting an outdoor furnace and would like to make my own insulated line coming from the boiler to the house. I"ll use PEX tubing and need to place it in something and insulated it so that it can be buried. Have any ideas? It will be roughly 100ft from the house. Thanks




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Hound

09-24-2004 05:36:08




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 Re: Have you made your own outdoor insulated PEX l in reply to Treecutter, 09-23-2004 12:27:19  
Lately, I've seen guys, dig trench, put stone and drain down(in our area it needs to be drained), overlap trench with plastic, cut rigid blue styrofoam strips(approx 10"), put plastic sewer pipe on top of blue styrofoam, call spray styrofoamers, incase plastic pipe with foam, fold plastic over styrofoam, cover by hand, then machine. Looked like some work, but they all said it saved them some money. Hound

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JMS/MN

09-23-2004 23:32:40




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 Re: Have you made your own outdoor insulated PEX l in reply to Treecutter, 09-23-2004 12:27:19  
I used 2 inch thick styrofoam, cut into 8 inch wide strips, 8 feet long. Two passes with a router with 1 inch half moon bit. Sandwich these on both sides of the pipes, held together with spikes during backfilling, buried 30 inches. Doing it again I'd probably run the pipes through pvc, to make it easier to replace them. They could be insulated on the outside with styrofoam.



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Brent in IA

09-24-2004 16:49:42




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 Re: Have you made your own outdoor insulated PEX l in reply to JMS/MN, 09-23-2004 23:32:40  
You must have had a lesson from the same place I got my burner from when I lived in MN. Did the same thing and worked real well for me. Kinda messy when routing the foam but well worth it when you look at the money saved.



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JMS/MN

09-25-2004 20:15:19




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 Re: Have you made your own outdoor insulated PEX l in reply to Brent in IA, 09-24-2004 16:49:42  
Would that be Aqua-Therm at Brooten? Old Ivan was quite a fellow. Liked to tinker and came up with many good ideas.



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Brent in IA

09-28-2004 06:20:09




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 Re: Have you made your own outdoor insulated PEX l in reply to JMS/MN, 09-25-2004 20:15:19  
Yep, that was the place, great ideas and great furnace. I heated the shop and our 2,000 sq ft drafty farmhouse, including the tap water with that furnace, burning used railroad ties for fuel no less. It was a great system, wish I had it here in Iowa, thoughit isn"t as cold down here, rarely hits -10 at the most. :-)



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Moline

09-23-2004 19:42:37




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 Re: Have you made your own outdoor insulated PEX l in reply to Treecutter, 09-23-2004 12:27:19  
My stove came with a foam insulation that had 2 holes in it for the PEX to go through.They were 8 ft in length and when installed were butted up to each other and duct taped at the joint.Then you slide a plastic sleeve over the whole thing.My stove was a central boiler but I am sure you could just buy the insulation kit.Moline



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Jim Z

09-23-2004 17:22:09




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 Re: Have you made your own outdoor insulated PEX l in reply to Treecutter, 09-23-2004 12:27:19  
My outdoor burner PEX lines are ran through pvc pipe that is lined with foilfaced insulation. The ends of the pvc pipe are filled with expandable foam insulation.I got the pipe and insulation from the stove dealer. He also had a larger,better insulation system. Mine was the cheaper of the two, and fit in the 6 inch trench. If you want more info, let me know I'm sure I still have some information kicking around here somewhere. Jim in N.D.

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TheRealRon

09-23-2004 13:33:42




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 Re: Have you made your own outdoor insulated PEX l in reply to Treecutter, 09-23-2004 12:27:19  
Any place that sells PEX sells insulation made to be used with PEX in underground installations.



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tn terry t

09-26-2004 19:38:40




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 Re: Have you made your own outdoor insulated PEX l in reply to TheRealRon, 09-23-2004 13:33:42  
anyone know of any sites that show this type set up i have never seen one thanks



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frankh

09-26-2004 03:41:07




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 Re: Have you made your own outdoor insulated PEX l in reply to TheRealRon, 09-23-2004 13:33:42  
I have put in a lot of underground piping for outdoor furnaces. I have used PVC in the past, but corrugated, non-perforated pipe works great. It's one piece, no joints and flexes around bends. You can wrap the pex in foil faced bubblewrap. A company that makes exactly this product claims an R-17. The best thing about having a waterproof conduit(the corrugated pipe), is it keeps any ground water away from the pex. If you get ground water touching the pex, you're all done! I don't mean to offend anyone, but I've seen the CB green foam, with a plactic sleeve, come out of the ground saturated with water. The four, or five foot piece I saw must have weighed forty pounds. Be careful when you backfill. A layer of sand, or gravel around the pipe is good.

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