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Johnson Controls Pressuretrol

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cwaz
cwaz Member Posts: 22
in Strictly Steam
Hello all,

    I am looking for some advice on the Johnson Controls pressuretrol that is currently set up on my WM P-SGO-3 (oil fired steam boiler).  The lowest pressure I have been able to get the system to operate at is 4.5psi ( I attached a 0-5psi gauge to better trouble shoot), which I thought was way too high for the sake of vents, fuel efficiency, etc,  If I dial the cut out on the pressuretrol any lower it will not cut back in and allow the boiler to fire again.  I attempted to find  manual for the pressuretrol in hopes of figuring this out, but have been unable to do so.  A search on the great inter web barely has any info.  I would love any input on how to lower the operating pressure of my system.  Thanks in advance.    

Comments

  • Steamhead
    Steamhead Member Posts: 18,203
    Check the pigtail under the pressuretrol

    to see if it's plugged up. This can cause your symptoms. I usually blow into the pigtail, but that doesn't taste so good. 
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • cwaz
    cwaz Member Posts: 22
    Clean as a whistle

    The pigtail was clean, shot some compressed air for good measure, but there was very little buildup. It still ran: cut in 1, cut out 4.5, which is not even close to what is set on the pressuretrol.
  • Steamhead
    Steamhead Member Posts: 18,203
    edited January 2014
    Then

    you need a new pressure control. If that were mine I'd spend the extra money for a Vaporstat. You really don't need more than a pound anyway.
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • cwaz
    cwaz Member Posts: 22
    Reccomendations

    I figured that was my next step. I can't even get the listed manufacturer (Johnson controls ) to give me any info on it so I'm sure it's probably older than the kid I talked to on the phone. Any suggestions on which model of vaporstat would best suit my needs?
  • Steamhead
    Steamhead Member Posts: 18,203
    L408J1009

    maxes out at 16 oz- 1 pound.
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting

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