Pics of 2 DIY systems being built / Hot Air Collectors and Drainback System - Page 6

solarhotairpanels · 12-28-20, 06:50 PM

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?

I forgot to mention that I 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.

skyking · 12-23-21, 07:00 PM

Do you think a single collector would suffice for the average home hot water supplement?
Now I am considering point of use tankless electric heaters, one at each bathroom and at the kitchen, and put two of those zones on a circ pump with timer and put the solar trank system near the other.
I'd go with your drainback system and a modest 30~40 gallon storage.

12-23-21, 07:00 PM	#52
skyking Helper EcoRenovator Join Date: May 2011 Location: Western Washington Posts: 91 Thanks: 47 Thanked 20 Times in 13 Posts	Do you think a single collector would suffice for the average home hot water supplement? Now I am considering point of use tankless electric heaters, one at each bathroom and at the kitchen, and put two of those zones on a circ pump with timer and put the solar trank system near the other. I'd go with your drainback system and a modest 30~40 gallon storage.