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burnt up or fried 24 volt transformers

geno54 Member Posts: 43
In the future when troubleshooting, a low amperage inline circuit breaker or 3 amp fuse ( automotive style )will help save many a transformer. Just a tip


  • burnerman_2
    burnerman_2 Member Posts: 297
    24 volt transformers

    ok guys put on your thinking caps we installed a new boiler (gas) steam 3 weeks ago we have replaced 4 24volt transformers we had an electraicain in if we disconnect the water feeder(on the 24 vt. system)it works ok tryied a new feeder thought the first one was faulty fried another one so what could be doing this we are all baffled we checked all we can check and r stumped what are we overlooking guys?? burnerman/royboy
  • David Nadle
    David Nadle Member Posts: 624
    Check the specs on the transformer and the water feeder

    Some of those 24V water feeders take 40 watts, and some of those 24V transformers are only good to 20 watts. It's probably not a short becuase you'd smell that right away.

    Make sure your transformer is rated for the water feeder load.
  • Wayco Wayne_2
    Wayco Wayne_2 Member Posts: 2,479
    I buy

    control transformers with built in circuit breakers. It's a lot easier resetting a button than rewiring a new transformer every time there's a problem. Gives you more chances when troubleshooting too. The brand my supply house uses is Jard. Just look for a CB at the end of the model number on the box that indicates circuit breaker. WW

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  • Tony_23
    Tony_23 Member Posts: 1,033
    Too much load

    You'll need either a higher capacity t-former or a seperate one for the feeder.
  • mtfallsmikey
    mtfallsmikey Member Posts: 765
    Jard good

    Also; Honeywell AT 150/175
  • jim lockard
    jim lockard Member Posts: 1,059
    Save the transformers

    a couple of 1/4" spade connectors a 3 amp fuse and a little black tape has saved many a transformer J.Lockard
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