Unit installation

13
Supply pressure
1. Start the burner.
Note
For commissioning, see page 7.
Switch the burner to maximum heat-
ing output. For this, activate the emis-
sions test switch at the control unit.
2. Check the supply pressure (flow
pressure), see table on page 13.
Note
The supply pressure (flow pressure)
should be between 20 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 61).
4. Close the gas shut-off valve.
5. Remove the pressure tester and
close test nipple
A
.
Supply pressure
(flow pressure)
Measure
Below 15 mbar Make no adjustments and notify the gas supply utility.
15 to 20 mbar Please note The boiler may only be operated temporarily with
these settings (emergency mode).
Notify your gas supply utility.
20 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 your gas supply utility.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5692 907 GB