recirculation

Hello everyone, I'm facing a rather complex situation and I need your expert advice. My neighbor and I share a boiler for hot water, and we have a single recirculation pump serving both of our homes. However, after the pump, the recirculation circuit splits into two separate branches, each...

I'm not a plumber but I carefully installed a recirculation loop and pump and it doesn't leak. However, it didn't work either. I suspected the pump was air-locked, installed a hose bib near the pump to purge air. Success! But every week or two the system fails. I had assumed any air would...