11
A
A
Top test nipple: "P.IN" (input), static
and supply pressure
0
1.
Close the gas shut-off valve.
0
2.
Remove the screw inside top test
nipple
A
at the gas train and con-
nect the pressure gauge.
0
3.
Open the gas shut-off valve.
0
4.
Check the static pressure:
■ Natural gas: max. 25 mbar
(2.5 kPa)
■ LPG: max. 57.5 mbar (5.75 kPa)
Record the actual value in the serv-
ice report.
0
5.
Start the boiler.
Note
During commissioning, the boiler
can enter a fault state (several
times) because of airlocks in the gas
line. To reset, switch the control unit
ON/OFF switch OFF and ON again.
The ignition process will then be
repeated.
0
6.
Check the supply pressure (flow
pressure):
■ Natural gas: 17.4 to 25 mbar (1.74
to 2.5 kPa)
■ LPG: 42.5 to 57.5 mbar (4.25 to
5.75 kPa) (at 50 mbar/5 kPa pre-
charge pressure)
Record the actual value in the serv-
ice report.
Note
Use a suitable measuring device
with a resolution of at least
0.1 mbar (10 Pa) to check the supply
pressure.
0
7.
Take action as shown in the follow-
ing table.
0
8.
Switch OFF the control unit ON/OFF
switch (the boiler shuts down).
0
9.
Close the gas shut-off valve.
10.
Remove the pressure gauge and
seal top test nipple
A
with screw.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5692 704 GB
