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Zero pressure in steam boiler

The water should be regulated by a water feeder, if your system has one. Otherwise you have to add it manually to about 1/2 the gauge glass, give or take depending on how things are set up.

The water will have nothing to do with the pressure. Most gauges will barely move even with the unit up to max as most systems run less than 2psi.

I could be a venting issue, a burner issue, or many other things. Best bet may be to use the resources tab at the top of the page and find a pro to check out the system.


  • Janice_2
    Janice_2 Member Posts: 3
    Zero pressure in steam boiler

    Hi ALL. I have a steam heating system in my house. The radiators are single piped systems that are controlled by thermostats. The boiler is similar to the one found here: http://www.vonwentzel.net/HVAC/SteamBoilerDryFire/index.html

    My problem is that not enough heat is coming up to the 2nd level of house. Is this a pressure issue? The gauge in the boiler registers 0 so i added more water from the auto fill to increase the pressure but this did nothing.

    Please help. What am i doing wrong?

    Thanks in advance
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