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hot water circulator location

Phil_3 Member Posts: 3
The shipping co should consider having the pump on the supply sticking out of the crate so the installers have a nice handle to carry the boiler down stairs and across dirt floors etc.


  • steve curran
    steve curran Member Posts: 6
    installation of hot water circulatior

    I would Like To Know Which Is A Better Performing Circulator If It Is Installed On The Return Side Of The Boiler Or The Supply Side Of The Boiler.I Am Thinking It Is Better To Install On The Supply Side Or Discharge Side Of The Boiler Because On The Return Side It Has To Circulate Through The Boiler. Will Be Looking For Answers Or Opinions. So Why Is Residential Installations On Package Boilers On The Return Side.
  • circ. on supply

    absolutly put the pumps on the supply, it works a lot better. check out dan's book "pumping away" and pipe it in just like it says. bob
    To learn more about this professional, click here to visit their ad in Find A Contractor.
  • John Fernandez_2
    John Fernandez_2 Member Posts: 40

    The pump is on the return side because of the short bx cable. Just kidding Dan!
  • Earthfire
    Earthfire Member Posts: 543

    That and the shipping department likes it there I've been told that they don't do it that way in europe. If the manufacturer mounted the circ on top the crate would be higher, and fewer boiler crates in the truck. Marketing runs the world. Long Live the Pencilpushing Geeks
  • Mark J Strawcutter
    Mark J Strawcutter Member Posts: 625
    but they sell

    bx in long rolls - they really do!

    (see Dan, sometimes we actually remember what we read :-)

  • Dave Flood
    Dave Flood Member Posts: 14
    Circulator position

    Hi Steve,
    In schools and seminars I've attended over the years, it has been explained to me that years ago, cicrculators were installed on the return side because of problems with the seals. The circulators couldn't take the heat of the water on the supply side of the system. We don't have that problem with ciculators of today. On most residential applications, the head that the pumps work against is not a problem, so you can place the circulator on either side. However, we achieve better performance if a pump is on the supply side. With the pump on the return side, we tend to pull the air out of the water and create gurgling in the system. With the pump on the supply side, we push the air back into the water.

    Dave Flood
    Dir of Tech Trng
    ICPA Tech Trng Ctr
    Wallingford, Ct
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