10
Checking the nozzle pressure
Preparing the test
A
B
C
D
E
1.
Undo the screw inside test nipple
A
, but do not remove.
2.
Connect the pressure tester at test
nipple
A
.
3.
Open the gas shut-off valve.
4.
Start the burner (see page 6).
5.
Press "S"
D
and "-"
C
simultane-
ously.
Display
C
will then show the follow-
ing:
■ Under status: "d" (= control stop)
■ Under service: Modulation level in
% ("00" = 100 % = upper output,
"00" = 0 % = lower output)
Testing the nozzle pressure at the upper output
1.
Press "+"
E
until the service display
has incremented to "00" (=100 %).
2.
Check the nozzle pressure in accord-
ance with the Wobbe index and the
output in the nozzle pressure table on
page 11.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5692 488 GB