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Unable to purge air from hydronic baseboard heating system
Recently, my Taco 007 went on me. I have a Weil McLain gas fired hydronic baseboard system. Unfortunately, whoever installed this system, did it on the cheap. There are no isolation valves at the circulator or bleeder vents at the baseboards. I have sucessfully purged air from the system before, but this time, I am having no luck. I had to drain the system to replace the circulator. Once repaced, I filled the system with the fast fill on the automatic feed. Then I attached a hose to the drain before the circulator and let it purge at about 25 PSI. The system is still full of air. The house is heating, but I can hear the water cascading through the piping. I am selling the house in a week and need to resolve this issue before then. Should I install a valve between the drain on the return line and the circulator? Is there something I am doing wrong? Any help is greatly appreciated.
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