expansion tanks

[coolidge]

Is there a formula to calculate what size expansion tank one needs. I am going to have about 300 gallons.

Thanks

 

[stee6043]

I think the most conservative way to figure it out is to take somewhere between 4-8% of your total system volume. That's roughly how much expansion acceptance volume you need.

Check out this link for some helpful info:

http://eoa.elbi.it/prodroot/body.pe?category=xt