7.
Record the actual value in the ser-
vice report.
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.
Danger
Gas escaping from the test
nipple leads to a risk of
explosions.
Check for tightness.
Open the gas shut-off valve, start
the boiler and check for tightness at
test nipple
A
.
Supply pressure (flow
pressure)
Remedy
below 15 mbar
Do not commission, and notify the gas supply utility.
15 to 25 mbar
Start the boiler.
above 25 mbar
Install a separate gas pressure governor upstream
of the system and set the inlet pressure to 20 mbar
for natural gas. Notify your gas supply utility.
Setting the maximum output
Note
You can limit the maximum output for
heating operation
. The limit is set via the
modulation range. The max. adjustable heating output is limited upwards by the
boiler coding card.
1.
Start the boiler.
Further details regarding the individual steps
(cont.)
15
Commissioning, inspection, maintenance
5692
761
GB
Summary of Contents for Vitodens 200-W WB2B Series
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