Operating instructions

6. Check the supply (flow) pressure; it
should be
&
20 mbar for natura l gas,
&
50 mbar for LPG.
Note
Use suitable test equ ipment with a
resolution of at least 0.1 mbar to
measure the s upply press ure.
Record the actual value in the ser-
vice report.
Taketheactionshowninthetable.
Supply (flow)
pressure for nat-
ural gas
Supply (flow)
pressure for
LPG
Remedy
below 17.4 mbar below 42.5 mbar Do not start up. Noti fy your mains gas o r
LPG supplier.
17.4 to 57.5 mbar 42.5 to
57.5 mbar
Start up boiler.
in excess of
57.5 mbar
in excess of
57.5 mbar
Install a separate gas governor down-
stream of the system and regulate the
pressure to 20 mbar for natural gas, or
50 mbar for LPG. Notify y our mains gas
or LPG supplier.
7. Shut down the boiler, close the gas
shut-off valve, remove the pressure
gauge, and close test nipple A
with the screw.
8. Open the gas shut-off valve and
start the boiler.
Danger
Gas escaping fro m the test
nipple leads to a risk of
explosion.
Check test nipple A for
soundness.
Further details regarding the individual steps (cont.)
14
Initial start-up, inspection, maintenance
5692 548 GB