Quote:
Originally Posted by SimpleManLance
I just checked out both your systems. very cool! On your drain back system, don't you need some sort of a vacuum break to get the water to drain back into the 6 gallon tank?
|
To answer your question YES...
Even though the water being pumped up to the collectors was returning to my drainback tank in the basement I added a T fitting and ball valve to the pipe entering the small drainback tank up on top. I then opened the ball valve just a crack to allow air to enter while water was draining back into the tank. By doing that the returning water returned much faster then without the ball valve air opening.
I also went up on the roof and installed a vacum break type valve at the highest point where hot water leaves collectors on route back to drain back tank. This valve allows a pinch of air into piping as water flows by but will not allow water to leak out. Just perfect for the application.
any other questions just let me know.
I love talking about all this solar stuff.
Thanks!