FyriteINSIGHTPlus Manual Operation0024-9487 Rev 1 594.3. Combustion Testing ProcessWARNING: The Fyrite INSIGHT Plus calculates combustionparameters based on North American or Siegert combustionequations. NA or Siegert configuration is selected in the SETUPMENU. Be sure that your Fyrite INSIGHT Plus is properlyconfigured for your region and desired combustion calculations.Step Example Combustion Testing Procedure1 Confirm that testing prerequisites have been completed (see page 56).2 Based on the sampling point examples (see page 56) and your combustionapplication, locate and prepare an appropriate sampling point.3 Insert the probe into the combustion location.4 Press the RUN/HOLD button to begin sampling gas. You should see theword RUN in the upper left corner of the display and hear the samplepump turn on. If you see the word HOLD, press the RUN/HOLD buttonagain.5 Monitor the display for combustion data.6 If desired, turn on your optional IrDA printer, then press the F1 button onthe Fyrite INSIGHT Plus to print the current combustion data. (Seepage 64 for additional printing information.)7 Press the F3 button as desired to save combustion data for later retrieval,review, and/or printing.8 Press the RUN/HOLD button to stop the test. You should see the wordHOLD in the upper left corner of the display and hear the sample pumpturn OFF. If you see the word RUN, press the RUN/HOLD button again.(You may optionally choose to print test data while in HOLD mode.)9 Remove the probe from the sampling point and disconnect the probe.CAUTION: The probe may be very hot. Allow it to cool,then wipe it clean with a dry cloth.10 Move the instrument to a clean air environment and press the POWERbutton to turn off the instrument. The shutdown procedure includes apurge component that clears the sensors of combustion gases.