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Flooded Steam Boiler

We have a two pipe steam system w/ zone valves and a boiler feed pump. The Mcdonnell Miller # 150MD has been tested and checked, yet every morning for three weeks this fall the boiler has flooded. Could this be because we aren't really in the heating season or is something else wrong?

Comments

  • Dale
    Dale Member Posts: 1,317
    Wrong

    Something is wrong, if you have a domestic coil it could be leaking inside the boiler or the makeup feed valve leaking, or sometimes the manual feed valve leaking. I guess it's possible that the makeup to the tank is leaking so much the tank is full. You'll need to isolate one at a time to find the culprit.
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