Operating instructions

36
A
1. Close the gas shut-off valve.
2.
Undo screw A in test nipple "IN" on
the gas train but do not remove it, and
connect the pressure gauge.
3. Open the gas shut-off valve.
4. Check the static pressure and record
the actual value in the report on
page 179.
Set value: max. 57.5 mbar
5. Switch on mains voltage and start the
boiler.
Note
During commissioning, the boiler can
enter a fault state (fault EE is shown)
because of air 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: 37 mbar
Note
■ Use a suitable measuring device
with a resolution of at least
0.1 mbar to check the supply pres-
sure.
■ The pressure drop between the
gas tap and gas valve is 0.5 mbar
at full load.
7. Record the actual value in the report
on page 179.
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.)
5772 909 GB