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Understanding the PTA gauge, this weeks video

RayWohlfarth
RayWohlfarth Member Posts: 1,654
edited October 4 in THE MAIN WALL

One of the most common questions I get asked in my classes is how much pressure should be on the hydronic boiler. So this video explains how to determine how much pressure is required. I hope you enjoy it.

https://youtu.be/c-AN6-5wkK8?si=xtr1mLXUgzZ1Uq4b

Ray Wohlfarth
Boiler Lessons

Comments

  • EdTheHeaterMan
    EdTheHeaterMan Member Posts: 9,378

    Nice video Ray, I like the part about mechanics believing that the Circulator Pump pushes the water up to the empty radiators. I just reviewed that concept with a new member of HeatingHelp.com. It took several diagrams and comments to get him to realize that the system must be full of water all the way to the top radiator for it to work properly. I wish I had this video three weeks ago.

    Edward Young Retired

    After you make that expensive repair and you still have the same problem, What will you check next?

    RayWohlfarth
  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 16,474

    4-5 psi at the highest point in the system static with the pumps off. That is if your pumping away from the ex tank. If pumping toward the ex tank and the system had a high head loss you could have a vacuum at the top of the system….seen that many times.

    EdTheHeaterManhot_rodRayWohlfarth
  • RayWohlfarth
    RayWohlfarth Member Posts: 1,654
    edited October 5

    @EdTheHeaterMan thank you Ed appreciate it

    @EBEBRATT-Ed Good point Thanks

    Ray Wohlfarth
    Boiler Lessons
  • mattmia2
    mattmia2 Member Posts: 10,926

    I'd also add the leaking indirect coil or tankless coil to the pressure creeping up without heating.

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