44
9. 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.
Supply pressure (flow
pressure)
Measures
Below 15 mbar (1.5 kPa) Do not commission the appliance, and notify the gas
supply utility.
15 to 30 mbar
(1.5 - 3.0 kPa)
Start the boiler.
Above 30 mbar (3.0 kPa) Connect the separate gas pressure governor up-
stream of the system and set the pre-charge pressure
to 20 mbar (2.0 kPa). Notify the gas supply utility.
Checking the nozzle pressure, 18 kW
Gas combi boiler
A
Test connector
B
Cap
C
Bolt
D
Phillips screw
01. Turn off the ON/OFF switch on the
control unit (the boiler shuts down).
02. Close the gas shut-off valve.
03.
Undo screw in test connector A,
but do not remove. Connect the
pressure gauge.
04. Open the gas shut-off valve. Turn
ON the system ON/OFF switch on
the control unit.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5837146
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