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Primary Secondary Piping

Steamhead (in transit)
Steamhead (in transit) Member Posts: 6,688
in THE MAIN WALL
if you did it the other way, it would induce flow in the secondary loop when the secondary pump wasn't running. Not good.

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Comments

  • Patrick_33
    Patrick_33 Member Posts: 3
    Primary Secondary Piping question

    Should the piping for the secondary loop be taken off the primary loop from the bullheads? Or does it matter if you come off the ends of the tees? Thanks
  • Patrick_33
    Patrick_33 Member Posts: 3


    Thanks. We're piping several boilers in a condo complex. One of the crews piped off the ends of the tees. Should we change it? Or go on to the nest one? Also I have all of Dan's books. Does he specify this somewhere? Thanks
  • Bob Sweet
    Bob Sweet Member Posts: 540
    What are you

    heating with the boiler? Indirect, two temp. system? Maybe I am not seeing this correctly, but if you are creating a low pressure drop between pri and sec (closely spaced tees) not sure if it matters whether you use the bull heads for your pri loop or your sec loop. The key is to hydraulically seperate the two. Again maybe I'm not seeing it right. Could you describe the system piping a bit more?

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  • Patrick_33
    Patrick_33 Member Posts: 3


    We are heating apartments with wall type radiators (possibly Myson brand). 3 to 7 rads per apartment, piped off a manifold (home run system). The boilers are Trinity Combis. They require thr primary secondary loops.
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