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Author Topic: Question about Outdoor boilers  (Read 13502 times)

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Offline Dana

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Re: Question about Outdoor boilers
« Reply #20 on: January 20, 2007, 07:36:36 AM »
Central Boiler recommends the shallow bury depth in case you have ground water near the surface. Water will conduct heat out of the plumbing much quicker than frozen earth.
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Offline woodmills1

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Re: Question about Outdoor boilers
« Reply #21 on: January 20, 2007, 08:54:23 AM »
Yes, ground water in contact with the heat pipes would be a much larger problem.  My pipes are shallow, around 2 foot.  They have a 1 inch black foam insulation and then a styrofoam box around that.  The whole outside run was then encased in a 9 mil poly sock, one piece from cellar to stove, being careful not to perforated it during installation.  I also lined the trench with sawdust and then covered the pipes with sawdust to keep from puncturing the bag.  My company, Free Heat Machine, made a big deal about excluding water from contact with the pipes.  Waters ability to either hold or remove heat is amazing.  I can still see the look on my students faces when I boiled water in a plain dixie cup using a bunsen burner. :D :D
James Mills,Lovely wife,collect old tools,vacuuming fool,36 bdft/hr,oak paper cutter,ebonic yooper rapper nauga seller, Blue Ox? its not fast, 2 cat family, LT70,edger, 375 bd ft/hr, we like Bob,free heat,no oil 12 years,big splitter, baked stuffed lobster, still cuttin the logs dere IAM

Offline Furby

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Re: Question about Outdoor boilers
« Reply #22 on: January 20, 2007, 02:51:45 PM »
That's why dirt is such a poor insulation.

Offline OneWithWood

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Re: Question about Outdoor boilers
« Reply #23 on: January 22, 2007, 03:06:45 PM »
Much to my horror I discovered that wrapping the pipes in plastic was a big mistake.  It just traps condensation, saturating the styrofoam  :(
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Offline woodmills1

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Re: Question about Outdoor boilers
« Reply #24 on: January 22, 2007, 08:43:18 PM »
my plastic is a one piece bag from back of stove to inside the house.
James Mills,Lovely wife,collect old tools,vacuuming fool,36 bdft/hr,oak paper cutter,ebonic yooper rapper nauga seller, Blue Ox? its not fast, 2 cat family, LT70,edger, 375 bd ft/hr, we like Bob,free heat,no oil 12 years,big splitter, baked stuffed lobster, still cuttin the logs dere IAM

Offline Mtnjack

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Re: Question about Outdoor boilers
« Reply #25 on: January 22, 2007, 09:17:17 PM »
Remember insulation only slows heat transfer, does not stop it,just have to start mowing before every one else.I heat with a taylor 165 feet from house and lose 10 to 20 degrees,180 to 160 not a problem. Just taped bbq meter to pipe in basement.House is plenty warm. Mtn Jack


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