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Regulator and backflow preventer in the feed line

photokynetics
photokynetics Member Posts: 52
in Domestic Hot Water

I have an aqua balance spoiler system and

Screenshot_20240903_073804_Chrome.jpg

I ran into an article but discusses how the backflow preventer should be before the pressure regulated in order for the system to work right, I have enclosed a copy of that article along with a photo of my system, any thoughts on this?

Screenshot_20240903_082923_Chrome.jpg

Comments

  • Ironman
    Ironman Member Posts: 7,603

    By code, the vent outlet of the BFP has to point downward when it’s installed in the horizontal position.

    Bob Boan
    You can choose to do what you want, but you cannot choose the consequences.
    mattmia2
  • hot_rod
    hot_rod Member Posts: 23,750
    https://forum.heatinghelp.com/discussion/comment/1809296#Comment_1809296

    and a discharge pipe to the floor or indirect waste

    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
    mattmia2
  • photokynetics
    photokynetics Member Posts: 52

    Okay now that we got that code violation out of the way what about placement of the regulator in relation to the backflow preventer?

  • HomerJSmith
    HomerJSmith Member Posts: 2,635

    Backflow preventer first-regulator second-boiler third. Do I have that right??? hmmm

  • EdTheHeaterMan
    EdTheHeaterMan Member Posts: 9,681
    edited September 2024

    From what little I can see in that photo, you need to get a professional to review that work. Especially the relief valve configuration. Also, there is no safe discharge or safety tube attached to your back-flow preventer

    Other than that, I have no idea what that arrow is pointing to. But I never installed or serviced that brand of equipment.

    Edit: what can happen if your relief valve does not work because it is installed backwards

    https://makeagif.com/gif/mythbusters-water-heater-explosion-yInJnq

    https://makeagif.com/gif/mythbusters-water-heater-explosion-yInJnq

    From the photo I can't tell if the relief valve is connected properly to the pressure vessel. Is that a tapping on the right from the boiler that is painted white or is the white device on the left where the elbow is connected to a pipe nipple, a tank that is painted white?

    Edward Young Retired

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

  • Larry Weingarten
    Larry Weingarten Member Posts: 3,630

    Hi, About the T&P, if it is the type that really has the temp probe, it cannot really sense the stored hot water temperature as it's out in a pipe. So, whether you go with the Mythbuster video or the "Explosion Danger Lurks" video from 1942, the result is the same. It's unsafe as installed.

    Yours, Larry

  • mattmia2
    mattmia2 Member Posts: 11,117
    https://forum.heatinghelp.com/discussion/comment/1809451#Comment_1809451

    It also looks to be backwards but I can't quite tell from that picture. The male tapping in line with the stem pf the pressure relief valve should be in the pressure vessel.

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