To get email notification when someone adds to a thread you're following, click on the star in the thread's header and it will turn yellow; click again to turn it off. To edit your profile, click on the gear.
The Wall has a powerful search engine that will go all the way back to 2002. Use "quotation marks" around multiple-word searches. RIGHT-CLICK on the results and choose Open Link In New Window so you'll be able to get back to your results. Happy searching!
In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
Louisiana code for Backflow preventer on solar hot water systems
I have been talking with a gentlemen in New Orleans about solar thermal. He is having problems selling the systems because the Dept. of health demands that a backflow preventer is put on the main water line coming into the house, thus creating a higher cost to the customer.
I understand why back flow preventers are put on residential and commercial water systems, (kind of, I don't understand where contamination would come from) But why, on a solar thermal system would you need a backflow preventer on the main water system coming into the house?
Here is a link about the Louisiana code:http://www.lses.org/problems-heating-up-for-solar-water-heater-installations-in-la/
0 · ·