If you need any help this link file is it. It's better than some Radiant Books I have Wirsbo. Simple and easy to understand.

Pass it on to those in need.


Mike


LINK

Thanks for the link.  Looks like a good quality company.

 

Steve

Helped me several times and I have Wirsbo Design Guide Books . What I like is that it shows clearly Pumping and ZVC configurations. I use Taco Controllers SR and ZVC,ZVC-EXPS but I know great info when I see it.

Have you noticed the last page says $20 bucks?