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warmhaus.com
4.14. CO/CO2 COMBUSTION CHECK
CAUTION
Start
Run the boiler in maximum
output e.g. Service Mode
Purge your flue gas analyzer into fresh air, let it stabilize and ensure
you have:
0
2
readings of 20.6 or above
C0
2
readings of below 0.2% C0
2
.
Insert your flue gas analyzer in the appliance test point and ensure the
appliance is maintaining maximum power output and allow the
readings on the analyzer to stabilize.
Readings should be:
CO - less than 300 ppm
CO/CO
2
ratio -0.004 or below
Yes
Boiler is operating correctly and within the
combustion limits, bring the boiler out of
the Service Mode and no further
adjustments are required.
No
Boiler combustion limits are not met, if all
previous checks have been completed
correctly e.g. gas pressure, gas rate, and
flue Integrity checks then please run Auto
Calibration /please follow Auto Calibration
procedure/
