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Hot water boiler problems

Well the relief valve was triggered at 30 psi. But here is the rub. The boiler was off. So must be the pressure reducer because city water is 70 psi. Changed out the pressure regulator...Watts 1156F and the pressure relief valve 30 psi. Boiler still hitting the 30 psi and dumps. Remove the expansion tank and install new Extrol SX-30V. Boiler still dumps at 30 psi. Currently boiler is off and temp reads 100 degrees. Pressure is over 30 psi and dumping water....Help

Comments

  • rbeck
    rbeck Member Posts: 56
    Does the boiler have a domestic hot water coil or an indirect water heater tank?
  • lchmb
    lchmb Member Posts: 2,997
    coil on the boiler or indirect coil has failed? have you shut off the fill valve to the boiler?
  • HVACNUT
    HVACNUT Member Posts: 4,185
    > @lchmb said:
    > coil on the boiler or indirect coil has failed? have you shut off the fill valve to the boiler?

    > @rbeck said:
    > Does the boiler have a domestic hot water coil or an indirect water heater tank?

    You guys beat me to the punch.
    If an indirect, I'll say it's a Superstor, Weil McLain or Triangle Tube bladder tank. Wagers?
  • Solid_Fuel_Man
    Solid_Fuel_Man Member Posts: 2,303
    I'm going with tankless coil.....for $500 please.
    Serving Northern Maine HVAC & Controls. I burn wood, it smells good!
    Zmankcopp
  • Leonard
    Leonard Member Posts: 903
    I bet Tankless coil, too.