11
Initial start-up, inspection and maintenance
Further details regarding the individual steps (cont.)
Supply pressure
ĂĂ7. Start the burner.
Please note:
Initial start-up, see pageĂ8.
Switch the burner to stage 2. To
do this, activate the emissions
test switch on the control unit.
ĂĂ8. Check the supply pressure (flow
pressure), see the table below.
Please note:
The supply pressure (flow
pressure) should be between 20
and 25Ămbar. The gas governor is
factory-set to 12.5 mbar. Do not
change this setting.
ĂĂ9. Record the actual values in the
commissioning report on page 50.
10. Close the gas shut-off valve.
11. Remove the U-shaped pressure
gauge and close test nippleĂ
.
Supply pressure
(flow pressure)
Remedy
below 15 mbar Do not change the settings. Check the filter in the gas train
and notify your local gas supply company.
15 to 18 mbar Please note: The boiler may only be temporarily operated
at this setting on stage 1 (emergency mode).
Check the filter in the gas train. Notify your gas supply
company.
18 to 50 mbar Start up the boiler.
above 50 mbar Install a separate gas pressure valve with zero off
upstream in the boiler system, and regulate the pressure
to 20 mbar.
Notify your gas supply company.
5692Ă534ĂGB
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