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Pump Wiring

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Alan (California Radiant) Forbes
Alan (California Radiant) Forbes Member Posts: 4,002
edited February 2021 in THE MAIN WALL
I just replaced a pump where the original installer shuttled the wires for the other pumps - two of them - through the wiring box for the first pump. Tricky, unusual, but more than anything, a pain in the butt for the guys that come afterwards to do the service work. :/

8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hour

Two btu per sq ft for degree difference for a slab

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  • Intplm.
    Intplm. Member Posts: 1,948
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    @Alan (California Radiant) Forbes

    I can't tell you how many times I have seen this. I agree it's a big PITA
  • Zman
    Zman Member Posts: 7,569
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    I think that anything I would say about this would be against sites rules :s
    "If you can't explain it simply, you don't understand it well enough"
    Albert Einstein
    Erin Holohan Haskell
  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 15,523
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    Dumb
  • mattmia2
    mattmia2 Member Posts: 9,639
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    I try to leave a loop so someone can cut it later if they have to when I do something like that.
  • Alan (California Radiant) Forbes
    Alan (California Radiant) Forbes Member Posts: 4,002
    edited February 2021
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    I try to leave a loop so someone can cut it later if they have to when I do something like that.
    A loop would have been nice, but there was probably no room for the extra length; that box was pretty full when I opened it. There was extra wire at the other end where it terminated in the pump control.

    I know the guy that originally installed it back in the 90's after the original house burned along with 3,000 others in the Oakland Firestorm. He was one of very few that had any knowledge of hydronic heating back then. Almost always used the same Laars boilers. He used to hang out here on HeatingHelp, but don't know if he's still around.
    8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hour

    Two btu per sq ft for degree difference for a slab
  • ratio
    ratio Member Posts: 3,626
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    It looks pretty & saves some material. Probably a code violation on the conductor fill, though.

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