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Rat's Nest

Alan (California Radiant) Forbes
Alan (California Radiant) Forbes Member Posts: 4,214
in THE MAIN WALL
We've come a long way, haven't we.
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

Comments

  • Steamhead
    Steamhead Member Posts: 17,387
    Well, at least

    you can replace the relays and transformer in that box- not always true with newer ones.



    What is it used for- zone valves?
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • Jamie Hall
    Jamie Hall Member Posts: 24,861
    That's exactly

    what I was thinking, Steamhead!  But I didn't want to sound like I was an old-timer...
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
  • Alan (California Radiant) Forbes
    Alan (California Radiant) Forbes Member Posts: 4,214
    Controller

    Frank: Those relays control pumps in a 5-unit apartment building.



    When I first saw this, I wanted to sell the owners a more modern pump controller, but after thinking about it, I don't believe it would be in their best interests since those relays and transformer are probably original equipment.  The pumps are all original Grundfos as well.
    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
  • Steamhead
    Steamhead Member Posts: 17,387
    Do the relays

    also start and stop the burner?
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • Alan (California Radiant) Forbes
    Alan (California Radiant) Forbes Member Posts: 4,214
    Burner

    Yes, those relays turn on the burner.
    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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