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[BIGDIESEL20S]

Well I brought my Hardy home about 3 weeks ago and got the location of where the wife and I want to put it,after many talks about it .
So I got everything around and poured my pad. Then got a locate on all the underground lines in my yard that will be in my way. now I'm up to the pipe.
So my question is will I need to buy oxygen barrier pex? It's going to be inside a pipe from the house to the stove so it's not going to be exposed no where. Next question my plan is to run my 4 pex pipes with split foam pipe insulation on all 4 pipes inside a 6in S&D pipe and I plan on putting it about 3 feet deep, frost line here about 16 to 20in. Will that work well or is there somthing else I need to cosider? And now for my last question I've been lookin at the pex pipe and some of it is rated for 160F, 180f, and some is 200f. is there some special pipe I need to get?

[Ridgekid]

It was recently a topic of discussion.

http://outdoorwoodfurnaceinfo.com/forum/index.php?topic=1010.0

[rosewood]

I have made my pipe similiar to what you are considering, and have hsadgood results. Some may say that you should buy the good stuff. I believe you can get the same insulation factor as store bought products but the water proofing is the important part.if you have A high water table or you think this could be a problem for you then buy a good quality brand . Where I'm located I have nothing but sand and lines. Are buried 5' deep. Why are you doing 4 line.  I would buy the 200 deg pex ,don't think it will be much of a price difference.  Ppp

[RSI]

Pex is all pretty much rated the same. As the temperature goes up the pressure rating drops. Some advertise a lower temperature so they can show a higher pressure. The ASTM rating is at 180 degrees and pretty much any brand will have that.

If your boiler is pressurized then you probably want to use oxygen barrier. If it is open then you can use either.

I would insulate better than what you described. When I made mine I did that but also wrapped one layer of bubble foil around it. I buried it shallow and it melts snow in late spring.

How many feet is the boiler from the house?

[BIGDIESEL20S]

Thanks for the link. The 4 lines, 1 water supply to furnace ,2 DHW from furnace to house, 3 supply to heat coil, 4 return from heat coil. the furnace is only about 50 feet from house, but as the pipe will have to be ran it will be about 95feet from furnace to basement wall then 10feet to heat coil. and 30 feet to HWH.

[ijon]

I have a 1994 Woodmaster 546. When I got it I put in this styrofoam type insulation on the pex no wrap, bad move, when I dug it up it was full of water. The dealer at the time knew less about the stoves and installation than I did. I since then installed the good pex from Central Boiler. I could not be happier. No heat drop from stove to house.