7.4.1.
Checking the hydraulic pressure
The hydraulic pressure must reach a minimum of 0,8 bar. If the
hydraulic pressure is lower than 0,8 bar, the symbol
bar
flashes.
If necessary, top up the water level in the heating system
(recommended hydraulic pressure between 1,5 and 2 bar).
7.4.2.
Checking the expansion vessel
1. Remove the cover from the sealed chamber.
¼
see chapter: "Removing the cover from the sealed
2. Check the expansion vessel and replace it if necessary.
7.4.3.
Checking the ionization current
The ionization current is displayed in the menu
#MEASURES
.
¼
See chapter: "Reading out measured values", page 81
7.4.4.
Checking the tightness of the flue gas
evacuation and air inlet connections
Check the tightness of the flue gases evacuation and air inlet
connections.
7.4.5.
Checking combustion
The check on combustion is done by measuring the percentage of
O
2
/CO
2
in the flue gas discharge flue. To do this, proceed as follows:
1. Unscrew the plug of the flue gas measurement point.
2. Connect the flue gas analyser.
CAUTION
Ensure that the opening around the sensor is completely
sealed when taking measurements.
3. Set the boiler to full load.
¼
See chapter: "Setting the air/gas
ratio (Full load)", page 71. The boiler is now operating at full
load. Measure the percentage of CO
2
and compare this value with
the checking values given.
4. Set the boiler to part load.
¼
See chapter: "Setting the air/gas
ratio (Part load)", page 72. The boiler is now operating on part
load. Measure the percentage of CO
2
and compare this value with
the checking values given.
M002534-A
1
2
7. Checking and maintenance
AGC 10/15 - AGC 15 - AGC 25 - AGC 35
100
20/01/2012 - 300026081-001-B