"Superstore" 40 gal hot water tank discharging through overflow - why?
We were away for a few days and shut off the oil burner/boiler (Weil-McClean Gold) while we were gone. We turned the boiler on when we got home. A day after returning home I heard water running in the cellar - the overflow from the Superstore was discharging into the one gallon pale on the floor and overflowing. The cellar floor was soaked. I flipped the spring loaded pressure release valve at the top of the discharge pipe and the discharge opened up full force. Releasing the valve did not return the flow to a strong trickle instead it was a stronger flow. Finally I turned off the cold water feeding the tank and shut off the boiler. What's going on and how do I correct the problem?
Reply to Jim and Red with pictures.
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Originally Posted by jadnashua
I am slowly beginning to know my way around this system but it is all new to me. The air purge mechanism appears to be missing from the boiler. Unless the "flow control" is for air purging... it is inline with the green boiler expansion tank mounted between the joists.