48
08. Select the lower heating output:
Use / to switch directly
between the upper and lower heat-
ing output.
For the lower heating output select
"LO".
Note
Operation with the upper or lower
heating output is automatically
reset after approx. 30 min, or press
OK and MODE simultaneously
until flashes.
09. Test the nozzle pressure at the
lower rated heating output. In the
case of deviations from the value
shown in the following table, adjust
the nozzle pressure for the lower
heating output using Phillips
screw
D
. Counterhold screw
C
(spanner size 10).
10.
Fit cap B.
11. Check the setting values and
record them in the enclosed "Guar-
antee card".
12. Turn OFF the ON/OFF switch on
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.
13. Open the gas shut-off valve and
start the appliance.
Danger
Gas escaping from the test
connector leads to a risk of
explosion.
Check the test connector
for gas tightness.
Gas system boiler (heat only)
Rated heating output kW 5.4 18
Natural gas (12T)
Nozzle ø mm 1.25 1.25
Nozzle pressure
based on a supply pressure of 20 mbar
mbar 1.1 11.3
Note
The values for nozzle pressure given in
the tables apply to the following ambi-
ent conditions:
■ Air pressure: 1013 mbar
■ Temperature: 15 °C
Wobbe index see page 42.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5837146
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