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  1. #1
    Join Date
    Apr 2005
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    Question Indirect pump primary loop or secondary

    What does everyone think about installing the indirect pump in the secondary loop vs in the primary boiler loop. Pros and cons

  2. #2
    Join Date
    Feb 2010
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    In a boiler room
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    Quote Originally Posted by t2 View Post
    What does everyone think about installing the indirect pump in the secondary loop vs in the primary boiler loop. Pros and cons
    It works. Just have to run two circs instead of one on a dhw call. A little harder to prioritize the dhw call since most newer boilers have dhw capability built in.

    What is the project? Every job is a little different.

  3. #3
    Join Date
    Jan 2012
    Location
    Broomall, PA
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    440

    post a pic....or draw a diagram

    Like t2 said, there's more then one way to solve your problem. If you have many zones, or different mixing involved, you may have everything come off your primary loop as secondary loops, even the boiler loop can be a secondary loop.

  4. #4
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    Apr 2005
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    somewhere out there
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    lochnivar knight squire indirect the boiler can control the boiler pump and the indirect pump in the primary but the indirect can also be put with the other 4 zones and the zone panel can run it just wondering if one is more efficient than the other

  5. #5
    Join Date
    Jan 2012
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    Broomall, PA
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    440
    If you have the knight, I think you're better off letting the boiler control the indirect, would be the most efficient. Would work the other way, but would not be efficient during WWSD. Also, during the winter, you primary boiler loop will be running at the DHW set point every time there is a DHW call, not at boiler reset temps.

  6. #6
    Join Date
    Feb 2010
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    Quote Originally Posted by STEVEusaPA View Post
    If you have the knight, I think you're better off letting the boiler control the indirect, would be the most efficient. Would work the other way, but would not be efficient during WWSD. Also, during the winter, you primary boiler loop will be running at the DHW set point every time there is a DHW call, not at boiler reset temps.

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