18
Initial start-up, inspection and maintenance
Further details regarding the individual steps (cont.)
Checking air pressure switch
At the factory, the air pressure switch is adjusted to the corresponding
switching point, so that readjustment is generally not required. However,
should an adjustment nevertheless be required, check the air pressure switch
setting and correct, if required, in accordance with the details below by
rotating black scaled ring B.
A Adjustment markings (shutdown
when pressure drops)
B Scaled ring, black
Rated output range
kW
90 to 100 125 to 140 150 to 165 190 to 210
Air pressure switch
setting values
mbar
3.8ĂĆĂ4.3 3.8ĂĆĂ4.3 3.8ĂĆĂ4.3 5.0ĂĆĂ5.5
System shutdown
1. Switch OFF the mains electric
power, the system ON/OFF switch
or the mains isolator and
safeguard against unauthorised
reconnection.
2. Pull plug-connectorĂfA and lÖ
from the burner.
3. Close the main gas shut-off valve.
5692Ă534ĂGB
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