Outdoor Wood Furnace Info

All-Purpose OWF Discussions => General Outdoor Furnace Discussion => Topic started by: MD20/20 on November 21, 2012, 05:33:42 PM

Title: pex expansion
Post by: MD20/20 on November 21, 2012, 05:33:42 PM
How do you guys deal with expansion of pex in your basements?  I have over 2ft of expansion over approx 30 ft. of pex line in my basement going to heat exchanger.  The total line in 260ft.  My original set up leaked on start up this year and I made some modifications and they seem to be working.
Title: Re: pex expansion
Post by: BoilerHouse on November 21, 2012, 07:04:40 PM
My line from OWB to house is 160 ft.  Inside the house it runs another 15 or 20 ft and there are a couple of lazy 90 deg bends that allow for expansion and contraction. 
Title: Re: pex expansion
Post by: yoderheating on November 22, 2012, 06:57:53 PM
 If I don't want it to move I fasten it down before we fire the furnace up.
Title: Re: pex expansion
Post by: MD20/20 on November 22, 2012, 07:24:38 PM
Where does the expansion occur if you fasten it down? In the buried section of the PEX?
Title: Re: pex expansion
Post by: yoderheating on November 22, 2012, 07:31:07 PM
I assume so, I just know if I attach it securely in the basement it doesn't expand into there.
Title: Re: pex expansion
Post by: Red_Nek on November 22, 2012, 11:26:17 PM
How do you guys deal with expansion of pex in your basements?  I have over 2ft of expansion over approx 30 ft. of pex line in my basement going to heat exchanger.

When I installed my furnace, I had prior knowledge of the pex expansion issue. With this in mind, I decided to leave a service loop on the wall so that it could expand there. This way the expansion didn't torque a fitting or bind up in an area that couldn't handle it.

Dave