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Monoflo tees

cm6230
cm6230 Member Posts: 8
in Radiant Heating

what is everyone’s opinion on monoflo tees oriented so that the branch is laying flat up against the floor joist? 3/4”x1/2” “scoop” tee? Should I use two monoflo tees instead of one on the return? Kickspace is above. About 15-20 feet of branch piping. I’ll have the tees about 13” apart, that’s all the room I have.

Thanks guys

Comments

  • mattmia2
    mattmia2 Member Posts: 13,935

    A monoflo tee has a physical partition that divides the flow. that does a lot more to encourage flow in the branch than the pipe between tees. One or 2 depends on the resistance of the emitter and output and if it is above or below the main.

    cm6230
  • cm6230
    cm6230 Member Posts: 8

    would having the tees lay flat matter? Instead of looking up or down?

  • Jamie Hall
    Jamie Hall Member Posts: 26,292
    https://forum.heatinghelp.com/discussion/comment/1863838#Comment_1863838

    no

    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
    cm6230
  • mattmia2
    mattmia2 Member Posts: 13,935

    It shouldn't make a difference. You will need a bleeder on the emitter because you won't be able to get the kind of flow you need to purge the emitter. That isn't specific to the tee orientation but because it is monoflo.

    cm6230
  • cm6230
    cm6230 Member Posts: 8

    thanks guys, appreciate your feedback!

  • Ironman
    Ironman Member Posts: 7,752

    15-20 feet of branch piping is a concern with only 13” between the Tees. The basic rule is that you should have as much spacing between the Tees as there is in the branch. Two Monoflo Tees will help, but I’d be concerned about that much branch piping with only 13” between the Tees.

    A small circulator with two closely spaced standard Tees (primary/secondary) would be a sure solution.

    Bob Boan
    You can choose to do what you want, but you cannot choose the consequences.
    cm6230EdTheHeaterMan
  • mattmia2
    mattmia2 Member Posts: 13,935

    You could put a balancing valve on the main between the tees if you aren't getting enough heat from the emitter. Use long sweep 90's on the branch and use 45's and an offset wherever you can, 90's will be more restriction than the pipe itself.

    cm6230
  • Big Ed_4
    Big Ed_4 Member Posts: 3,246

    I would use two MF tees for a kicker and add a purge set .. so you don't have the need for a constant rise …

    There was an error rendering this rich post.

    cm6230

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