backup wood boiler wont shut off

Discussion in 'Boiler Forum' started by wilty74, Dec 13, 2009.

  1. wilty74

    wilty74 New Member

    Dec 13, 2009
    My wood boiler is a backup to my gas boiler the gas boiler is working fine but when the wood boiler is up the temp the pump will not shut off was working fine just all the sudden quite shutting off any help is appreciated thanks
  2. johnjh2o1

    johnjh2o1 Plumbing Contractor for 49 years

    Aug 9, 2009
    Sounds like your over heating the wood boiler. The circulator keeps running to stop the boiler from over heating. The boiler temperature should not be any hotter then 180. Most wood boilers are wired so the circulator will run when the temperature exceeds 180 if the thermostat is calling or not.

    Last edited: Dec 14, 2009
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