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Oil burner monitor and diagnostic apparatus

  • US 5,612,904 A
  • Filed: 04/25/1996
  • Issued: 03/18/1997
  • Est. Priority Date: 04/08/1994
  • Status: Expired due to Term
First Claim
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1. A monitor and diagnostic apparatus for an oil burner, with said oil burner having a low voltage thermostat, and an ignition transformer, with both having a measurable voltage independent from each other, and with said oil burner further having a vent stack with an outside measurable temperature, said oil burner having an operational history comprising a sequence of on/off cycles and performance events within each on/off cycle, said apparatus comprising:

  • a data recording unit comprising;

    first sensing means for providing a first signal corresponding to the voltage at the thermostat of said oil burner;

    second sensing means providing a second signal based on measuring the voltage at the ignition transformer of said oil burner;

    third sensing means for providing a third signal corresponding to the temperature on the outside of the vent stack;

    central processing means for processing said first, second, and third signals from said first, second and third sensing means, respectively, said central processing means providing an output of at least one signal corresponding to the performance events of said oil burner over a pre-selected time interval;

    memory means for recording the output of said central processing means over the pre-selected time interval in the sequential order and timing corresponding to the performance events and sequence having occurred in said oil burner;

    wherein, said pre-selected time interval extends over a plurality of on/off cycles such that said recorded output from said central processing means can be used to diagnose the operational history of said oil burner.

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