Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

Resources on best testing/setting for single steam pressuretrol setting?

Chris_Williams
Chris_Williams Member Posts: 8
in Strictly Steam
Hey guys,



My sister has just had her boiler replaced. She lives in the bronx, NYC and the process has been a nightmare. The contractor she worked with was really bad, after the boiler was replaced a lot of the distribution pipes started leaking and the contractor wouldn't fix them, so she had to.



She started asking me if it was operating at too high of a pressure and sent me the attached pic. I just bought Dan's book for her for a resource, but can you recommend any resources on setting and adjust the pressure troll?

Comments

  • Jamie Hall
    Jamie Hall Member Posts: 24,852
    Don't know what you mean by resources

    other than us -- and our experience.  Or Dan's books...



    And, based on that, that pressuretrol is set way too high.  The main scale should be set at 2 (setting below that can create problems with the linkage -- although it would nice to be able to set it lower) and the diff. (differential) scale should be set at 1.
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
  • Chris_Williams
    Chris_Williams Member Posts: 8
    Scrolling through past posts

    I know there's a tons of threads on this, I'm trying to find them right now, but if anyone has the URL off the top of their head, let me know!
  • Chris_Williams
    Chris_Williams Member Posts: 8
    Thanks Jamie

    Thanks Jamie, would there be a risk setting the DIFF to .5 PSI?
  • MDNLansing
    MDNLansing Member Posts: 297
    Just Slide

    Just slide the Main (grey) one to 2 and the Diff (white) one to 1. That's really all there is too it.



    As Jamie Hall stated, don't lower the Main below 2 or the linkage might bind up.
  • Rod
    Rod Posts: 2,067
    Pressuretrol Setting

     Hi- Go with Jamie's recommendations. He's very experienced.   Residential steam systems operate at a maximum of 2 PSI  (Even the Empire State Building's maximum is 3 PSI) 

    Set the Main scale at "2"   and the Differential scale at "1".   That means when the thermostat starts the burner, that the pressure will build to 2 PSI before the Pressuretrol shuts the burner off.  As the pressure drops, the pressuretrol will then turn on the burner  when the pressure reaches 1 PSI. This cycling between 1 PSI and 2 PSI will continue until the temperature setting on the thermostat is satisfied.  If you want to try a sightly longer cycle you can change the Differential to "1.5" but leave the Main at "2".  That means it will cycle between 1/2 PSI and 2 PSI.

    - Rod
  • ChrisJ
    ChrisJ Member Posts: 16,315
    Adjusting

    I didn't see anyone mention if but if it has been said I'm sorry for repeating.

    To adjust I believe there should be two screws on top of the unit you turn.  As you turn each one the sliders will move up and down.

    Single pipe 392sqft system with an EG-40 rated for 325sqft and it's silent and balanced at all times.

  • MDNLansing
    MDNLansing Member Posts: 297
    Manual

    This shows you exactly how to adjust



    https://customer.honeywell.com/resources/techlit/TechLitDocuments/60-0000s/60-2150.pdf
This discussion has been closed.

Categories