Fyrite INSIGHT
35
4.5 Performing a Combustion Test
Ensure that the following has been completed, and then proceed with the
combustion test as described below:
• Power on the analyzer and allow it to warm up (Section 4.2).
• Select fuel being burned (Section 4.3).
• Inset probe into proper sample location
(Section
4.4
).
• If necessary, insert optional primary air thermocouple into combustion-
air stream of burners that use an outside source of combustion air.
1. Press the
RUN/hOlD
button to start the test. The pump will start
running and the word RUN will appear at the top of the Combustion
Test screen.
Sensor Indicators:
The following indicators appear in the sensor’s data
field depending on certain conditions:
(
∗ ∗ ∗
) Sensor that is not calibrated or installed.
(XXX) Sensor overrange
(
- - -
) The calculated data cannot be displayed because the measured data
necessary to make the calculation is out of range (i.e., oxygen level above
18.8%).
2. Scroll to the T-STK reading. Loosen the thumbscrew on probe stop and
move probe in and out of the stack until the stack’s core temperature
(
hot spot
) is located as indicated by the highest T-STK reading; then
tighten thumbscrew to prevent further probe movement.
Locating the
highest stack temperature is very important for accurate efficiency cal
-
culations. Note that the recommended time to achieve a stable reading
is a minimum of 3 minutes.
3. You can now begin burner-service procedures. The analyzer readings
will change quickly to show changes in burner performance.
CAUTION:
Position the water trap with its gas-flow arrow
pointing upward. Do not allow water condensate above the tip
of the riser tube. The sensors could be damaged if water would
enter the analyzer. Empty the water trap after every combus
-
tion test (refer to Section 4.10)
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