Cpeters
In the Trades
I'm replacing my cga4 with a Aquabalance wmb120. I have 2 taco 007 with built in check valves and have a question about the Primary/secondary connection. Where does it go? Is it necessary? I have 2 taco 007 on the boiler return, one per zone hooked up to a taco 2 zone controller. I have my air separator and expansion tank set on the supply side. Just not sure where this connection should go. It looks like it should go above the return pumps. Is it necessary for anything other than efficiency? Thanks in advance.