heatmeiser
New Member
I've noticed recently that the baseboards for one of my heating zones are pretty noisy. When the heat kicks on for that zone, I can hear some noise from the circulator pump and then gurgling sounds from the baseboards. My only guess is that there is air in the system and it needs to be bled. I replaced a vacuum relief valve back in early September so perhaps that is the cause of added air into the system? I have a 3-zone FHW system utilizing 3 circulator pumps and Taco switch relays for each pump. I've watched some YouTube videos on how to bleed air from the system, but I'm not sure how to do it since I have relay switches. Also, I have yet to see any bleeder valves on any of my baseboards. Can someone tell me how to approach this?