Operation
ECA 450
14
Instruction 0024-9400
7.
Tip:
Use < > keys to quickly advance to the top and bottom of screen.
Also note that if “– – – –”, “x x x x”, or “* * * *” appear in a data field,
then data cannot be displayed for that measurement. Refer to Section
5.3
Error Symbols
for an explanation of these symbols and why data is not
being displayed.
O2
= % Oxygen
CO
= Carbon Monoxide
(1)
EFF
= % Combustion Efficiency
CO2
= % Carbon Dioxide
T-STACK = Stack Temperature
T-AIR
= Room/Primary-Air Temperature
EA
= % Excess Air
NO
= Nitric Oxide
(1)
NO2
= Nitrogen Dioxide
(1)
NOX
= Oxides of Nitrogen (combination of NO and NO
2
)
(1)
SO2
= Sulfur Dioxide
(1,3)
HC
= % Combustibles (Methane based)
CO(n)
= Carbon Monoxide content referenced to a percentage of
Oxygen
(2)
NO(n)
= Nitric Oxide referenced to a percentage of Oxygen
(2)
NO2(n) = Nitrogen Dioxide referenced to a percentage of Oxygen
(2)
NOX(n) = Oxides of Nitrogen (combination of NO and NO
2
)
referenced to a percentage of Oxygen
(2)
SO2(n)
= Sulfur Dioxide referenced to a percentage of Oxygen
(2)
(1)
Unit of measure is determined by the selected Pollution Units. Refer to
Section 2.17.3.
(2)
The letter “n” represents the operator’s selected Oxygen reference level
of between 0 and 15%. Refer to Section 2.17.7.
(3)
The SO
2
sensor cannot be installed without the NO
2
sensor also being
installed.
8.
Use
∧∨
keys to scroll to the T-STACK reading. Loosen thumbscrew on
probe stop and move probe in and out of the stack until stack’s core
temperature
(hot spot)
is located; then tighten thumbscrew to prevent
further movement of probe.
Locating the highest stack temperature is very
important in obtaining accurate efficiency calculation results
.
9.
Burner-service procedures can now begin. The readings on the analyzer
will quickly change to show changes in burner performance.
10.
If desired, combustion test readings can be saved. Refer to Section
2.7
Saving Test Data
.
CAUTION:
The sensors could become damaged if water enters the
analyzer. Drain the water condensate in the Water-Trap / Filter Assembly
as necessary during a combustion test as described in Step 10.
11.
During an efficiency test, periodically check water level inside the probe’s
Water-Trap / Filter Assembly. With this assembly stood up on its Outlet
End, do not let water condensate build up beyond tip of riser tube. Drain
water condensate after every combustion test. For additional information
on this subject, refer to Section 4
.2 Water-Trap / Filter Assembly
.