84
Commissioning
Flue gas analysis
Adjustment on the gas valve (Step 3/3)
Step 3: Adjustment on the gas valve
Adjust the gas valve only in case the
measured values lies out of range of
the values mentioned in the table on
previous page.
- Open the boiler as described on
page 85;
- First put engine 1 on full load (see
Step 1) and follow next steps;
- The O
2
/CO
2
values are set by using
an Allen key (2 mm), or a large flat
head screwdriver, on the screw
“3”. Please observe the following
rotating direction;
- Clockwise means more O
2
/
less CO
2
;
- Counterclockwise means less O
2
/
more CO
2
;
- Once done, repeat the steps above
for engine 2*.
Legend
1. Measuring point for the flue gas
probe
2. Offset regulation
3. Main throttle regulation
4. Pressure P-int
5. Pressure P-out
After this setting has been made, once more test the O
2
/CO
2
value at full
load and low load. See Step 1 and 2.
1
5
2
3
4
Adjustment of the gas valve in case the measured values lies out of range of the values on full load (Step 3)
Full load
Natural gas (G20)
Propane (G31)*
O
2
4,8%
5,0%
CO
2
9,0%
10,5%
Values are valid with closed cover/air box.
*only possible if LPG conversion kit is installed
Attention; close the venturi intake for the non-running engine (bare in mind
there is a 3 minute post purge time active).
* Engine change
Press Mode button, menu returns to
selection for engine 1 and/or 2.
