1.
Close the gas shut-off valve.
2.
Release screw
A
inside test con-
nector "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 118.
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 pipe. After
approx. 5 s press "
E
" to reset the
burner.
6.
Check the supply (flow) pressure.
Set value:
&
Natural gas: 20 mbar
&
LPG: 37/50 mbar
Note
Use suitable test equipment with a
resolution of at least 0.1 mbar to
measure the supply pressure.
7.
Record the actual value in the ser-
vice report on page 118.
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 port
A
with
the screw.
9.
Open the gas shut-off valve and
start up the boiler.
Danger
Gas escaping from the test
port leads to a risk of explo-
sion.
Check test connector
A
for
soundness.
Further details regarding the individual steps
(cont.)
15
Commissioning, inspection, maintenance
5692
731
GB
Summary of Contents for VITODENS 333-F WS3A
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