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Pressuretrol Settings

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QuintonS
QuintonS Member Posts: 49
edited December 2025 in Strictly Steam

Trying to see what would make the most sense on my subtractive pressuretrol. Should I do 2psi main & 1psi differential, 2psi main & 0.5psi differential, or 1psi main & 0.5psi differential? It is a one pipe system, No insulation in the house (located in Northeast too), EDR of all radiators is about 605, have a gorton #2 for main venting, and varivalves at radiators (planning on replacing over the next few years)

Comments

  • Jamie Hall
    Jamie Hall Member Posts: 26,998

    Any of those would work… my own whimsy would be 1.5 psig main, 0.7 psig differential.

    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 19,881

    Try running 1.5 cut off and make the differential as wide as possible. If you make it too wide the boiler won't restart.

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