9. Test the nozzle pressure at the
lower rated output. In case of
deviations from the value
shown in the table below, adjust
the nozzle pressure for the lower
rated output using cross-head
screw D. Hold screw C (SW 10)
to counter the torque applied.
10. Snap cap B into place.
11. Check the setting values and
record them in the service report.
12. Press d.
Operation with the lower output is
terminated.
13. Switch OFF the system at the
control unit (the boiler shuts
down), close the gas shut-off
valve, remove the pressure gauge
and close test connector A with
the screw.
14. Open the gas shut-off valve and
start up the boiler.
Danger
Gas escaping from the test
port leads to a risk of
explosion.
Check the test connector
for soundness.
Note
The values in the nozzle pressure table apply to the following ambient condi-
tions:
&
Air pressure: 1013.25 mbar
&
Temperature: 15 °C
Wobbe index see page 23.
Nozzle pressure table
Output kW 10.5 24
29
*
1
Nozzle pressure
Gas Supply pres-
sure in mbar
Nozzle 7
in mm
Natural
gas E
20 1.25 mbar 2.0 10.2 15.1
Natural
gas LL
20 1.40 mbar 2.0 10.2 14.7
LPG 50 0.89 mbar 3.3 14.8 22.6
Setting the maximum output
You can limit the maximum output for heating operation. The limit is set via the
modulation range.
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