Circulator pump placement

Ric_2

Does it matter where I place a new circulator pump? I have an existing large pump on a 1 1/4 pipe going to the return on my boiler. I have a second pump returning below it on a 3/4 pipe. I need to add another pump on a 3/4 pipe for a third zone. Can I have it pipe into the 1 1/4 pipe above the larger pump? If I pipe it in below, can I take it straight into the return at the base of the boiler by adding a tee to where the drain valve is now and just add the drain valve to the end of that? See enclosed picture.

Al Letellier_21

Pump placement

Hard to tell from the photo but you should be able to install a tee at the current drain location, assuming the new tee and the return into the boiler are properly sized. Never tie in above an existing circulator with another....each circ should move water directly into the boiler, or better yet, away from the boiler.

Ric_2

Thanks

Thanks Al. The other two circulator pumps were installed to flow into the return. Guess they don't subscribe to Dan's pumping away thoughts. I'll see if I can locate the new one to work with the pump away plan. If not, I'll tee it into the drain at the return. Thanks for your reply. Eric