5. Use the adjustment screw A to set the percentage of O
2
/CO
2
for the
gas type being used to the nominal value.
Increasing the gas flow, will decrease O
2
and increase CO
2
. The
direction in which the adjusting screw must be turned to increase or
decrease the gas flow is indicated on the gas control valve. The 5- to
9-section boilers are supplied with a different gas control valve from
the 10-section boiler. See drawing for the position of adjusting screw
A for full load.
6. Check the flame through the inspection glass. The flame must not
blow off.
Performing the low load test
1. If the full load test is still running, press the button to change the
load test mode.
2. If the full load test was finished, select the tile [ ] to restart the
chimney sweep menu.
A Change load test mode
B Low power
3. Select the Low power test in the menu Change load test mode.
The low load test starts. The selected load test mode is shown in
the menu and the icon appears in the top right of the screen.
4. Check the load test settings and adjust if necessary.
Only the parameters shown in bold can be changed.
5. End the low load test by pressing the button.
The message Running load test(s) stopped! is displayed.
Checking/setting values for O
2
/CO
2
at low load
1. Set the boiler to low load.
2. Measure the percentage of O
2
/CO
2
in the flue gases.
Fig.76
Adjusting screw A
AD-0000492-01
O
A
A
3
Fig.77
Low load test
AD-3000941-03
..... ... ....... .... .. ..... ....
.........
..... ... ....... ....
..... ... ....... ....
....... .... .. ..... ....
.......
....... ...........
......
.....
...
.....
..... ... ....... .... .. ..... ....... .... ..... .......
i
.....
....... .... ....... .... .......
.... ...... ....
... ......
11:20
A
B
7 Commissioning
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