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Further details regarding the individual steps
05. Adjust the nozzle pressure at the
l.h. gas train (BV1) with hexagon
screw C in accordance with the
value in the table on page 16.
Note
Turning clockwise: Nozzle pressure
rises.
06. Pull one of the two plugs a:Ö E
from the modulation coil on the gas
train.
07. Test the nozzle pressure at partial
load.
In case of deviation from the value
in the table on page 16:
■ Counterhold hexagon screw C.
■ Adjust the nozzle pressure at Phil-
lips screw D.
Note
Turning clockwise: Nozzle pressure
rises.
08. Check the setting values and record
them in the report.
Rated heating
output
Natural gas E / G20
Pilot gas nozzle 26-2
Nozzle pressure at
full load
Nozzle pressure at
partial load
Nozzle designation
Air restrictor
kW
72
mbar
14.7
14.7
kPa
1.47
1.47
mbar
6.6
6.4
kPa
0.66
0.64
2.90
2.90
7 mm
—
Commissioning, inspection, maintenance
(cont.)
09. Shut down the boiler and close the
gas shut-off valve.
10. Remove the pressure gauge from
bottom test nipple F of the l.h. gas
train (BV1) and seal aperture with
screw.
11. Connect plug B to the r.h. gas train
(BV2).
12. Remove all nozzle caps from the
r.h. half of the pilot gas nozzles.
13.
Danger
Gas escaping from the test
nipple leads to a risk of
explosion.
Check the test nipple for gas
tightness.
Open the gas shut-off valve and
start the appliance.
84
96
108
14.3
14.5
1.43
1.45
6.2
6.3
0.62
0.63
2.95
2.95
—
—
—
120
132
144
13.9
14.0
14.1
1.39
1.40
1.41
6.0
6.0
6.2
0.60
0.60
0.62
3.00
3.00
3.00
—
—
—
15
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