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water level

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Eric_15
Eric_15 Member Posts: 4
in THE MAIN WALL
I just replaced my expansion tank. Thanks alot for the help. Now I have a another problem how do i know when my system is full.

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  • scott75
    scott75 Member Posts: 100


    Steam or hot water? If hot water, make up valve is left open all the time. If steam, there should be a water level mark on boiler jacket behind sight glass. If there isn't, usually half to two-thirds up the sight glass is fine. But maybe not. Best I can tell you.
  • Eric_15
    Eric_15 Member Posts: 4


    its a water system.Make up valve? Is that the valve releasing the house line to the boiler. That valve is before the pressure reducing valve, then there is a valve with a pipe going to the floor.And then into a tee which goes up to the expansion tank and then the air vent valve, the other way of the tee goes into the boiler.
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