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Author:
mr leak (CA)
Some years ago I installed a tankless on demand water heater in a "crawl area" so I had an abandoned water heater B vent pipe to the roof. I used this abandoned pipe to run a 1/4 inch soft copper water line up to an evaporative [swamp cooler] on the roof and then at the roof, inserted the soft copper into 1/2 inch sunlight resistant non metallic electrical conduit to both protect the water line and somewhat insulate it from the hot sun. My question is ? Should I be concerned about the soft copper pipe probably touching a few spots inside the B vent pipe and electrolysis from dissimilar metals i.e copper and B vent metal? Otherwise I should have put this soft copper in a 1/2 pex sleeve ? or no big deal as is ?
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Author:
KCRoto (MO)
It shouldn't be an issue as they aren't in an electrolyte. Add some oxidation to the copper and I doubt it will have any effect.
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Author:
mr leak (CA)
Thanks for reply regarding water line inside B vent
Another question
The person who owns the house with the roof swamp cooler had his son go up on the roof with a bag of ice which he put in the water reservoir and within minutes it really cooled his house. So he then asked me if there was an electric cooling apparatus that could be used to cool the water in the 1/4 inch line before it heads up to the roof swamp cooler. There is adequate room in the "crawl "area 8 plus feet and electrical outlets ??
Wait for peoples thoughts
Thanks
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