Anthony mercurio  | 

We Just installed one of these mixing manifolds for the first time, how do we purge the air? I feel as if when we bleed the water is coming thru H fitting directly to return side of manifold & not thru our individual loops. We closed all return loops & we still get flow thru bleeder hose. What are we missing?
Thanks, we use a lot of your products, this manifold is a great time saver & looks great... I truly hope I’m missing something simple on purging.