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Author Topic: Radiant walls  (Read 6957 times)

wreckit87

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Re: Radiant walls
« Reply #30 on: September 30, 2018, 08:08:06 AM »

175? Small. That size space with average insulation in my neck of the woods would only take about 2000 BTU, so a 6 foot section of 3/4" with 180 degree water would be plenty
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sceptre74

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Re: Radiant walls
« Reply #31 on: September 30, 2018, 12:45:03 PM »

Good. Thanks for the help.
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mlappin

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Re: Radiant walls
« Reply #32 on: July 16, 2019, 11:22:45 AM »

Gotcha! I really don't think you would like running 180 through there. The linear expansion and noise is enough to drive a guy batty. Pex-Al-Pex will help considerably with that, but it'll still be noticeable if you're trying to keep them straight and/or sandwiched. How long are these walls? The BTU output is pretty minimal and takes a whole lot of tubing. I took a course with Uponor this summer and was trained in their Quik-Trak system, and must say I was very surprised with how little the output really is. And sheetrock cannot withstand anything over 130* water without warping and cracking, so that limits a lot of output also. As for knocking your temp down, if you'd be adding a pump for this loop anyway, why not just pipe a mixing valve in between the primary and circulator? Then you have whatever temp water you need

So if I read this correctly, even using the quik-trak on a wall the temp will need to be mixed down to 130 or less?
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wreckit87

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Re: Radiant walls
« Reply #33 on: July 16, 2019, 03:19:48 PM »

Depending on finish, maybe. I'd have to look in the paperwork but I want to say the max temp for Quik-Trak was 140
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