32
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 the reset button R (see operat-
ing instructions) 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 to
measure the supply pressure.
7.
Record the actual value in the service
report on page 157.
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 boiler.
Danger
Gas escaping from the test
nipple leads to a risk of explo-
sions.
Check test nipple
A
for tight-
ness.
Supply (flow) pres-
sure for natural
gas
Supply (flow)
pressure for LPG
Measures
below 17.4 mbar
below 42.5 mbar
Do not start the boiler. Notify your gas
supply utility or LPG supplier.
17.4 to 25 mbar
42.5 to 57.5 mbar
Start the boiler.
above 25 mbar
above 57.5 mbar
Install a separate gas pressure governor
upstream of the system and regulate the
pre-charge pressure to 20 mbar for natu-
ral gas or 50 mbar for LPG. Notify your
gas supply utility or LPG supplier.
Setting the maximum output
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.
Weather-compensated control unit:
1.
Press
OK
and
å
simultaneously
for approx. 4 s.
2. "Service functions"
3. "Max. output"
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5457 552 GB
Summary of Contents for FS2B
Page 163: ...163 5457 552 GB ...
