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CI Baseboard water in and out

heatingFun Member Posts: 84
For CI baseboards, the water should be bottom in and bottom out or should be bottom in and up out?

My existing CI baseboards are bottom in and bottom out. Somebody told me it should be bottom in and up out. It seems better to me.

Which way is better?


  • Eric_32
    Eric_32 Member Posts: 267
    edited March 2012
    always piped bottom/bottom

     unless on a steam system. Top supply/ opposite bottom condensate drain.

    I have almost always found CI BB to be piped in and out thru the bottom tappings and the upper tapping away from the supply gets the coin vent.

    Here is some good reading material for you:

  • Mark Eatherton
    Mark Eatherton Member Posts: 5,839
    Bottom in, top out eliminates need for individual air bleeders...

    You could then power purge from the basement instead of having to visit each individual radiator with a screw driver and a towel...

    If it affected the output by more than 2%, I 'd be totally surprised.

    It will work fine either way. Just makes it easier and cleaner to get the air out from the mechanical room.

    It's not so much a case of "You got what you paid for", as it is a matter of "You DIDN'T get what you DIDN'T pay for, and you're NOT going to get what you thought you were in the way of comfort". Borrowed from Heatboy.
  • Big Ed_4
    Big Ed_4 Member Posts: 1,882
    edited March 2012
    Makes Sense

    You learn something every day , thanks
    I have enough experience to know , that I dont know it all
This discussion has been closed.