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Author:
kharrington (CA)
Hi, I think I need a plumbers input.
I have a solar hot water system using glycol. It uses a wand inside our hot water tank to heat the water. The water temp reaches 250F. So I have extra heat that can heat my spa/hot tub. Ideally, I want to use the hot glycol by plumbing it through another wand in a 2nd hot water tank filled with spa water. This will super heat the water to I estimate 200F. My question is: how can I put the super hot water back into the spa without burning the occupants? My idea is to mix the spa and superhot water somehow then put it into the spa. I think I could pump water at (102F) out of the tub and mix it with (200F) from the tank with the wand until it reaches 104F then put it back into the spa.
What do you think of my idea, and how can I make it work?
Thanks,
kharrington
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Author:
North Carolina Plumber (NC)
It'll work but we would need to see what you've got to know exactly what you need. I'd install a mixing valve using the exisiting spa water to temper the hot water.
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Author:
waukeshaplumbing (WI)
I was trained in Solar hot water heating(never was able to sell a job)
you need to get a mixing valve after the heater to mix cold with the hot to temper it back down.
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Author:
North Carolina Plumber (NC)
If he uses cold to temper the spa water he could overfill the spa.
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Author:
hj
He would have to use the "tepid" water circulating from the tub as the "cold" water
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