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No PEX within 12\" of recessed lighting?
Paul E.
Member Posts: 7
Why is it that they say not to install PEX within 12" of recessed lighting? Is it because the lighting might heat/melt the PEX? Or is it a UV thing (light escaping from the can might hurt the PEX?)
On a planned underfloor staple up job, in the basement I have IC rated recessed cans for lighting. Above the cans would be a layer of insulation, then the aluminum plates, then the PEX. I can touch my hand on top of the recessed can without pain <g> - it doesn't seem like the light can is gonna hurt tubing with 130 degree water running through it???
Thanks,
Paul
On a planned underfloor staple up job, in the basement I have IC rated recessed cans for lighting. Above the cans would be a layer of insulation, then the aluminum plates, then the PEX. I can touch my hand on top of the recessed can without pain <g> - it doesn't seem like the light can is gonna hurt tubing with 130 degree water running through it???
Thanks,
Paul
0
Comments
-
Who
says this?Retired and loving it.0 -
I believe it is in the Wirsbo design manual...I have read it as well.
I don't know, but I assume it is fear of heat and a tube actually touching a can and eventually melting.
That's my guess and assumption.
If its burried behind insulation...I can't believe its a problem at all. I have it over my cans anyways.0 -
sounds familiar
I recall hearing the same thing. I believe I heard it at Wirsbo factory training. It may have more to do with the high temp affecting the lighting. I'm not sure but I will check my notes and get back to you if I find anything.
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I believe
It's because of the heat potential. All pex, that we've used, has the same standard as well it's a part of our local code.
:-) Kca:-) Ken0 -
safety first?
would it have something to do wiuth putting waterline over electrical device?
same reason you do not run your waterlines over your breaker box.
Terry
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Here's the links to RTI's manual -
For the plumbing pex, top of page 6 they say 12" vertical and 6" horizontal clearance with a little drawing:
http://www.radiant-tech.com/assets/documents/PlumbingDesignInstall.pdf
For the heat pex, just one line at the bottom of page 6. No explanation why in either case.
http://www.radiant-tech.com/assets/documents/HeatingDesignInstall.pdf
-- Paul0 -
The newer style
can lights are a double wall product with thermal cut out switches. I have noticed these IC's run much cooler than the old style cans.
If you "over bulb" them they trip the thermal cut outs. Hard to believe you coulcdn't pex within a foot of those, especially with insulation between!
hot rodBob "hot rod" Rohr
trainer for Caleffi NA
Living the hydronic dream0 -
bonded
What do you think about bonded pex-pipe with an aluminium coated surface inside. No fear of heat.
Ciao Rene0 -
The aluminum
would do fine, it's the PEX that still has an issue with the heat..
:-) Kca:-) Ken0
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