[Greenbuilding] PEX and solar

[Vadurro, Rob, EMNRD]

Sacie sez:

 

>I learned to my distress PEX can not be used in solar water systems

because it can't take the heat, distressed because I embedded it in my
walls and to the roof in preparation for just this.  But 

otherwise, what is bad about it?   Sacie 

 

>Uh oh, I did the same rough-in.  If PEX will take 120F for domestic hot
water, why not solar?  Are you expecting more than 120F in a solar hot
water heater?  

 

>A newer vacuum collector might get so hot, the older, less insulated
collectors may not.  Any experiences?  

 

--Lawrence

 

I recently installed a couple of Heliodyne collectors and water systems.
There were two temperature settings for the water coming off the
collectors- the lowest one was 160 degrees F.

 

-Rob Vadurro



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