60
Commissioning
Combustion analysis
Settings on the gas valve (Step 3/3)
Legend
a Measuring point of the waste
gas probe
b Set screw for O
2
/CO
2
Step 3: Adjustment on the gas valve
Only if the measured values are
outside the range of the table on the
previous page.
- Open de boiler as described on
page 61;
- The O
2
/CO
2
values are set by using
an Allen key (4 mm), or a large flat
head screwdriver, on the screw “B”.
Please observe the following
rotating direction:
- Clockwise means less O
2
/ more
CO
2
- Counterclockwise means more O
2
/
less CO
2
The adjustment is for each individual
burner. Adjust the gas valve of burner
A for burner A and gasvalve of burner B
for burner B.
a
b
Legend:
A On/Off switch
B Back button (ESC)
C Plus button (value increase/change)
D Confirmation button (OK)
E Arrow button right (forward)
F Chimney sweep function button
G Arrow button left (backward)
H Reset button
I Minus button (value decrease/
change)
L Display
R
OK
-
+
R
OK
-
+
F C
D
B A
L H G C E
Adjustment of the gas valve in case the measured values lies out of range of the values on full load
Full load
Natural gas E (G20), LL (G25)
Propane (G31)*
O
2
4,7%
5,1%
CO
2
9,0%
10,3%
Values are valid with closed cover/air box.
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.
* Only possible if LPG conversion kit is installed!
