45
2.
Loosen the screw inside test connector "PE"
A
at
the gas train but do not remove it; then 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 148.
Set value: max. 57.5 mbar (5.75 kPa).
5.
Start the boiler.
Note
During commissioning, the boiler can enter a fault
state (fault EE is displayed) because of air in the
gas line. After approx. 5 s, press reset button
R
(see operating instructions) to reset the burner.
6.
Check the supply (flow) pressure.
Set value:
■
Natural gas: 20 mbar (2.0 kPa)
■
LPG: 50 mbar (5.0 kPa)
Note
Use a suitable measuring device with a resolution
of at least 0.1 mbar (0.01 kPa) to check the supply
pressure.
7.
Record the actual value in the report on page 148.
Implement measures as indicated in the table
below.
8.
Shut down the boiler, close the gas shut-off valve,
remove the pressure gauge and tighten the screw
in test connector
A
.
9.
Open the gas shut-off valve and start the appliance.
Danger
Gas escaping from the test connector leads
to a risk of explosion.
Check gas tightness at test connector
A
.
Supply pressure (flow pressure)
Measures
For natural gas
For LPG
Below 17.4 mbar
(1.74 kPa)
Below 42.5 mbar
(4.25 kPa)
Do not commission the boiler. Notify your gas supply
utility or LPG supplier.
17.4 to 25 mbar
(1.74 to 2.5 kPa)
42.5 to 57.5 mbar
(4.25 to 5.75 kPa)
Start the boiler.
Above 25 mbar (2.5 kPa)
Above 57.5 mbar
(5.75 kPa)
Install a separate gas pressure governor upstream of
the system and set the flow pressure to 20 mbar
(2.0 kPa) for natural gas or 50 mbar (5.0 kPa) for LPG.
Notify your gas supply utility or LPG supplier.
Commissioning, inspection, maintenance
Checking the static pressure and supply pressure
(cont.)
5773 238 GB
