15
1.
Close the gas shut-off valve.
2.
Release screw
A
inside test nipple
"PE" on the gas train, but do not
remove it; then connect the pressure
gauge.
3.
Open the gas shut-off valve.
4.
Measure the static pressure and
record it in the service report on
page 138.
Set value: max. 57.5 mbar.
5.
Start the boiler.
Note
During commissioning, the boiler can
enter a fault state because of airlocks
in the gas line. After approx. 5 s press
reset button R to reset the burner.
6.
Check the supply (flow) pressure.
Set value:
■ Natural gas: 20 mbar
■ LPG: 50 mbar
Note
Use suitable test equipment with a
resolution of at least 0.1 mbar for test-
ing the supply pressure.
7.
Record the actual value in the report
on page 138.
Take the action shown in the follow-
ing table.
8.
Shut down the boiler, close the gas
shut-off valve, remove the pressure
gauge and close test nipple
A
with
the screw.
9.
Open the gas shut-off valve and start
the appliance.
Danger
Gas escaping from the test
nipple leads to a risk of explo-
sion.
Check gas tightness at test
nipple
A
.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5692 860 GB
Summary of Contents for CU3A
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