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Help with trapped air in system!
Hey guys new to the forum but have used this site many times in the past in a pinch! Hopefully I’m putting this post in the right area. I have a triangle tube challenger combi system and recently needed to move a pipe on the second floor. In the process I believe I have trapped some air in the second floor loop. It still heats up but I can definitely hear a difference in the water flow as well as the challenger has gone into lockout due to over temp. Just curious if someone could give me a few pointers on best way to bleed/purge the system I’ll attach a few photos of the system! Thanks in advance and again sorry if I posted this in the wrong area!