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flame inside burner

craig_10
craig_10 Member Posts: 7
in THE MAIN WALL
it is natural gas and it is in an out building heating sand for a steel foundry. it calls for 7" in and im a little short the regulator is inaccessible durring production but it's been that way since installed in 90's.

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  • craig_10
    craig_10 Member Posts: 7
    flame inside burner

    i am working on an enerco technical products vent free radiant heater. milivolt system. after the call for heat opens the gas control, a nice blue flame sweeps over the ceramic burners' face and all is well. for about 3 to 5 minutes then poof, the flame backs up and is inside the burner. i blew out the ceramic burners and made sure all the little holes were clear and checked gas pressure. when this happens on a conventional furnace i slow down the fuel mixture or replace the worn out ribbon burners. not sure what to do here.
  • Jeff Lawrence_25
    Jeff Lawrence_25 Member Posts: 746
    first problem

    Vent free? Do you know how dangerous an appliance like that is?

    That being said, is this natural or propane gas? You may need to check the gas pressure.
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