Checking And Adjusting The Gas:air Ratio; 1Setting And Checking The Co2 Values Under Full Load (70-80 %); Under Partial Load - Buderus Logano plus GB402 Installation And Maintenance Instructions Manual

7
Commissioning the heating system
7.10 Checking and adjusting the gas:air
ratio
7.10.1 Setting and checking the CO
full load (70-80 %)
B Read off load at the RC35 or via the service key.
B Wait until at least 70-80 % of the load is reached.
B Insert the test sensor through the test port
( Fig. 36, page 35) in the flue into the core flow and
check the CO content.
2
B In the case of CO
values below 8.5 % or above
2
9.6 %, correct the setting on the high load adjusting
screw to 9.1 % (see Fig. 32).
– Turning clockwise will reduce the CO
– Turning anticlockwise increases CO
B Recheck the CO
content and enter the value into the
2
commissioning report, Chapter 7.18, page 38.
Fig. 32 Checking the CO
1 High load adjusting screw
34
values under
2
level.
2
.
2
setting at full load
2
7.10.2 Setting and checking the CO
partial load
B Press
, until the decimal point in the status display
illuminates (min. 2 seconds).
This turns on the flue gas test.
B Hold down
and
5 seconds.
Fig. 33 Accessing partial load at the BC10
With standard settings, the display shows "
B Press to reduce the boiler output in percent until
"L20" is displayed.
B Read off load at the RC35 or via the service key.
B Wait until 20 % of the load is reached.
B Insert the test sensor through the test port
( Fig. 36, page 35) in the flue into the core flow and
check the CO content.
2
B In the case of CO
values below 9.0 % or above
2
9.6 %, correct the setting on partial load adjusting
screw [1] to 9.3 %.
– Turning clockwise will reduce the CO
– Turning anticlockwise increases CO
B Recheck the CO
content and enter the value into the
2
commissioning report, Chapter 7.18, page 38.
Fig. 34 Checking the setting under partial load
Logano plus GB402 - Subject to technical modifications!
values under
2
simultaneously for approx.
".
level.
2
.
2