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Author Topic: what size of underground pipe to go with  (Read 4521 times)

birchbark

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what size of underground pipe to go with
« on: February 28, 2013, 10:07:04 PM »
I will be replacing my piping from the house to the owb this summer and I have my mind made up on using Thermopex, I am just not sure if I should go with 1" or 1.25".  I am heating right around 4800 sq feet, older home, not great insulation.  My current setup is 2 supply and 2 returns 3/4" from the boiler that are not insulated.  I can heat my house fine with it, but I have a heck of a temp drop from the boiler to the house.  I got a quote of $12 a foot for 1" and $16 a foot for 1.25", I need 100 feet, so a difference of $400, just not sure if it is required or worth it.  If I want the 1.25", the dealer I am getting it from, suggests getting it ordered as sometimes it can take a long time to come in.
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Scott7m

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Re: what size of underground pipe to go with
« Reply #1 on: February 28, 2013, 10:24:15 PM »
I'd hit the middle and go with logstor, it's in between the 1" thermopex and the 1 1/4" thermopex.

My distributor for logstor and thermopex is a very large central boiler dealer, he reccomends logstor and installs it on over 90% of his installations...   It has a couple features that thermopex doesn't, for $1/ft more in most cases.   

If you are interested in that I could help you out, ships straight to your door really quick
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Scott7m

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Re: what size of underground pipe to go with
« Reply #2 on: February 28, 2013, 10:26:01 PM »
Logstor is a little over an inch inside, thermopex 1" is actually 7/8" inside.  There 1 1/4" is only a smidge bigger than the logstor 1"
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RSI

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Re: what size of underground pipe to go with
« Reply #3 on: March 01, 2013, 07:57:24 AM »
Probably just screw the fittings for each together to make a coupler. That is what I do when switching over from pex to pex-al-pex.
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Scott7m

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Re: what size of underground pipe to go with
« Reply #4 on: March 01, 2013, 09:19:13 AM »
Quote from: RSI on March 01, 2013, 07:57:24 AM
Probably just screw the fittings for each together to make a coupler. That is what I do when switching over from pex to pex-al-pex.

Yep...    Think pex al pex compression fittings will work on logstor pex
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RSI

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Re: what size of underground pipe to go with
« Reply #5 on: March 04, 2013, 05:15:07 PM »
It is just another type of pipe that some people use instead of pex. It is the metric size like the Logstor pex but sold as 1", but larger than regular pex.
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MattyNH

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Re: what size of underground pipe to go with
« Reply #6 on: March 04, 2013, 07:23:46 PM »
 I use pex-al-pex piping..Its a true 1 inch opening..
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RSI

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Re: what size of underground pipe to go with
« Reply #7 on: March 04, 2013, 07:43:39 PM »
The pex that Scott Suggested in the exact same inside diameter as pex-al-pex.
As as I know, no one makes the type of insulated pipe he wants with pex-al-pex.
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