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pressuretrol settings - are these right?

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elfie
elfie Member Posts: 266
in Strictly Steam
 its an ultra low pressure system



trying to set the pressure to 1.5 but i dont think these settings are correct.  pressure tends to cut off closer to 5 psi

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  • Joe V_2
    Joe V_2 Member Posts: 233
    No

    The MAIN scale sets the boiler's cut off pressure.  The DIFF. is subtracted from the MAIN to set the cut-in pressure.

    These devices work well but they dont have great resolution on the low end.  You need to adjust the main to 1.5psi and the DIFF to as low as practical- interpolate 1psi- so burner extinguishes at 1.5psi and re- lights when pressure is 0.5psi and will continue to do so until thermostat is satisfied.



    Disclaimer: I am a homeowner.

      
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