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00CNO0192-E (U0627512)
CONDENSINOX -
Installation, Use and Maintenance
4.7.2.
Changing from G20 to G31
ATTENTION:
ONLY for boilers connected with B23 and B23P.
4.7.2.1.
Phase 1: Procedure for changing the ignition power
Set the boiler to standby mode (see section 3.3.1 of the NAVISTEM B3000
boiler controller manual).
If necessary, press the ESC button to return to the standard screen.
Access the
Settings
menu (see section 3.6 of the NAVISTEM B3000 boiler
controller manual), "OEM" level.
Adjust the ignition speed (9512), minimum (9524) and maximum (9529) settings:
Models
Gas
9512
9524
9529
40
G20-G25
3950
1600
6700
G31
3650
3000
6100
60
G20-G25
4550
1860
7800
G31
2650
2350
6800
80
G20-G25
2300
1500
6400
G31
2550
1750
6300
100
G20-G25
2350
1750
7550
G31
2750
1750
7550
4.7.2.2.
Phase 2: Modifying the valve setting and checking the combustion parameters
Before starting the burner, on the gas valve, preset the gas flow rate, using
the R1 gas flow rate adjustment screw, to the appropriate value given in the
table above.
Start the burner at maximum power.
Using a combustion analyser, measure the CO
2
ratio in the exhaust gases:
on the concentric adapter, remove the plug from the lower opening and insert
the CO
2
measurement sensor into the centre of the flow in the exhaust duct.
Check the CO
2
value at maximum power and, if necessary, use the R1 valve
gas flow rate adjustment screw to obtain the values of CO
2
in the table above.
Change to minimum power and check that the CO
2
value is within the range
in the table above. If necessary, use the R2 setpoint adjustment screw.
If the setting is adjusted at minimum power, go back to maximum power and
recheck the CO
2
value. Repeat the operation until both values comply with
the table in the previous section.
Return to the standard operating mode.
After making the gas change settings, stick the label corresponding to
the new gas type in place of the old one.
