9
Supply pressure
A
1.
Start the burner.
Note
For commissioning, see page 6.
Switch the burner to maximum out-
put. To do so, activate the emissions
test switch on the control unit.
2.
Check the supply pressure (flow
pressure); see table on page 9.
Note
The supply pressure (flow pressure)
should be between 17.4 and
50 mbar. The gas pressure switch is
factory set to 10 mbar. Never alter
this setting.
3.
Record the actual value in the report
(on page 45).
4.
Close the gas shut-off valve.
5.
Remove the pressure tester and
close test nipple
A
.
Supply pressure
(flow pressure)
Measures
below 15 mbar
Make no adjustments and contact the gas supply utility.
15 to 17.4 mbar
Caution! The boiler may only be operated temporarily with this
setting (emergency mode).
Notify the gas supply utility.
17.4 to 50 mbar
Start the boiler.
above 50 mbar
Install a separate gas pressure governor with zero off upstream
in the boiler system, and regulate the pressure to 20 mbar.
Notify the gas supply utility.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5692 488 GB
