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How's This Work?

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kurt_9
kurt_9 Member Posts: 4
in Radiant Heating
I saw this today and don't understand how's this work? Wouldn't there be a "short circuit" between the supply and return? Tankless wall hung unit, everything else typical.


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  • Paul S_3
    Paul S_3 Member Posts: 1,261
    edited November 2016
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    No ..... there is hydraulic seperation between the boiler loop and the system loop.....they shouldve piped at least 12 or so inches of straight pipe before piping in a elbow for the system loop....i also wouldve piped the closely spaced tees closer....
    ASM Mechanical Company
    Located in Staten Island NY
    Servicing all 5 boroughs of NYC.
    347-692-4777
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    ASMHVACNYC.COM
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  • kurt_9
    kurt_9 Member Posts: 4
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    Thanks. So, you're saying this can work OK, but could have been piped "better"?

    As it is, it actually worked just fine, satisfactory distribution and temps throughout the entire floor. I'd just not ever seen this arrangement before.

    I'm not entirely clear on the "hydraulic separation" part. Can you explain a little more?
  • kurt_9
    kurt_9 Member Posts: 4
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    OK, never mind. I googled it up, and found the explanations. I'd not yet heard of hydraulic separation in this form. Thanks much for your time.
  • Paul S_3
    Paul S_3 Member Posts: 1,261
    edited November 2016
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    @kurt .... watch some "coffee with caleffi" youtube videos....they explain it really good.....or you can buy one of Dan Holohan's books..."primary-secondary made easy" http://astore.amazon.com/heatinghelp-20/detail/0996477268
    ASM Mechanical Company
    Located in Staten Island NY
    Servicing all 5 boroughs of NYC.
    347-692-4777
    ASMMECHANICALCORP@GMAIL.COM
    ASMHVACNYC.COM
    https://heatinghelp.com/find-a-contractor/detail/asm-mechanical-company
  • kurt_9
    kurt_9 Member Posts: 4
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    Yeah, the google found caleffi, and I took it from there. thanx again.

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