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UserRemoved · 06-12-2011, 07:53 AM

I have 3 zones in my system, last spring I had a zone in the family room that was getting hot by itself. I was running wide open, disconnected the thermostat and didn't make any difference. The taco circulator wasn't running that I could tell but only this zone was getting so hot you couldn't touch the pipes in or out.

I figured it was somehow gravity bleeding and shut the valve off at the circulator. My question is this: Is this a bad circulator or is this a bad flow control valve on the other side near the expansion tank? Not sure what that flow control valve does..

06-12-2011, 07:53 AM	#1
UserRemoved GrayBeards iTrader: (0) Join Date: Jan 2011 Posts: 1,132	Plumbing/HW oil burner question I have 3 zones in my system, last spring I had a zone in the family room that was getting hot by itself. I was running wide open, disconnected the thermostat and didn't make any difference. The taco circulator wasn't running that I could tell but only this zone was getting so hot you couldn't touch the pipes in or out. I figured it was somehow gravity bleeding and shut the valve off at the circulator. My question is this: Is this a bad circulator or is this a bad flow control valve on the other side near the expansion tank? Not sure what that flow control valve does..