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Circulating orientation + air leak during pressure test questions

Fluke216
Fluke216 Member Posts: 33
Are these pumps orientated correctly? It’s hard to tell exactly from the diagram in the paperwork.  Also the gaskets on either side of one of the pumps was  leaking air around 50 psi tightened them some more then around 60 they were leaking again anyone have experience with these I think I over tightened now as they were continuing to leak air. The systems only going to be at 12 psi and maybe water will be fine I could isolate them and test rest of piping anyway any advice is appreciated thanks. 

Comments

  • Jamie Hall
    Jamie Hall Member Posts: 24,138
    The leaking gasket problem may be from misalignment of the pipes. Gaskets are meant to seal, and usually won't tolerate any significant angular misalignment.
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
  • hot_rod
    hot_rod Member Posts: 22,826
    you need to use the Grundfos gaskets with those iso  valves, any other type or combination will often leak

    30 psi test should be plenty?
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 16,102
    edited December 2023
    The flow is going left to right. Not sure if the pumps should be mounted upside down check the install sheet.
  • ScottSecor
    ScottSecor Member Posts: 878
    Motors should not be installed facing the floor or the ceiling. The motor shaft must be installed horizontally.
    chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://s3.amazonaws.com/s3.supplyhouse.com/product_files/UPS15-58FC-install.pdf
    ZmanSuperTech
  • pedmec
    pedmec Member Posts: 1,009
    You should use the rubber ring gaskets that come with the circulator. they never leak. And will last far longer

    spin circulators 90 degrees for proper orientation.
  • hot_rod
    hot_rod Member Posts: 22,826
    The ring gaskets will not work with those flanges. Needs to be flat gaskets with no larger than  a 1” hole or gaskets miss the sealing surface on the valve. The gaskets that come with those valves fit perfectly 
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
  • Fluke216
    Fluke216 Member Posts: 33
    edited December 2023

    Sorry guys thanks , turns out I’m an idiot I few minutes after I posted this it clicked. I installed both gaskets I took the rings out and it worked perfectly I think I have the correct pump orientation now I spun the pumps up so the junction box is facing up.