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fourth year.
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MasterPlumbers
I have a forced hot water system and I am getting what I think is gravity circulation in my first floor loops. I have 2 loops and the unpowered circulation (gravity?) can occour in either loop.
Help? -
There should be Flo-control valve on the pipe out of the boiler to prevent that problem. It is usually red but could be some other color. If it is there, it has a lever on the top that can be rotated clockwise to lift the gate and allow gravity circulation. Screwing it counterclockwise restores it to a forced system.
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