Flue gas test
65
Greenstar FS/Combi FS – 6 720 810 590 (2020/04)
Do not operate the appliance if the measured value is below or above
these values. Determine the cause and eliminate the fault. If this is not
possible, block the appliance on the gas side and notify the gas supplier.
▶ Press the emissions test button C until the light goes out. The display
returns to the supply temperature.
▶ Switch the appliance OFF, turn off the gas cock, remove the pressure
gauge and tighten the screw in the test port for gas inlet pressure.
▶ Reinstall the cover.
13 Flue gas test
13.1 Emissions test button
The following appliance outputs can be selected by pressing the
emissions test button until it lights up:
Fig. 80 Press the emissions test button
• = Maximum set output in heating mode ( Maximum heating
output, page 57)
• = maximum nominal output
• = Minimum nominal output
You have 15 minutes to complete the tests. After that, the appliance
returns to default mode.
13.2 Measuring CO content of the flue gas
Use a multiport flue gas probe for the measurements.
▶ Open one of the flue gas test ports ( Fig. 75).
▶ Insert the flue gas probe approx. 2¾ inches (70 mm) into the test
port and seal around it.
▶ Press the emissions test button to select = maximum nominal
output.
▶ Measure the CO levels.
DANGER:
Risk of flue gas poisoning.
The CO level in the flue gas must be below 200 ppm (air free).
▶ If 9.4 Vol.%
1)
CO
2
and a CO level under 200 ppm (af) can not be
achieved due to the gas supplied, use a lower CO
2
level with CO
emissions under 200 ppm (af) instead.
▶ Repeatedly press the emissions test button C until the light goes out.
The display returns to the supply temperature.
▶ Remove flue gas probe and close the flue gas test port properly.
1) 9.4 Vol.% with NG and 11.0 Vol.% with LPG (propane)
max
1
2
34
5
6
eco
reset
6 720 641 933-51.1O
max
1
2
3
4
e
6
min
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