8.2.5.
Checking the DHW transfer capacity
If tap capacity falls significantly (due to insufficient temperature and/
or flow rate), clean the plate heat exchanger (hot water side) and the
tap water cartridge:
¼
See chapter: "Cleaning the plate heat exchanger", page 59.
8.2.6.
Checking the flue gas discharge and the air
supply
Check the tightness of the flue gases evacuation and air inlet
connections.
8.2.7.
Checking combustion
Measure the percentage CO
2
in the flue gases. To do this, proceed
as follows:
1. Heat the water in the boiler to a temperature of approx. 70 °C.
Allow the combustion to stabilise before inserting the
combustion analyser probe into the measurement
opening. This will prevent saturation of the analyser.
2. Unscrew the plug of the flue gas measurement point.
3. Insert the probe for the flue gas analyser into the measurement
opening.
4. Measure the percentage CO
2
in the flue gases. Perform
measurements at full capacity and low capacity. Compare this with
the control value.
¼
For further information: See chapter:
"Checking combustion", page 45
8.2.8.
Checking the automatic air vent
1. Check that the automatic bleed is working (This is visible on the
right on top of the boiler).
2. The air vent can be closed off with the cap that can be found next
to it.
3. If any leaks are detected, replace the air vent.
R000406-A
T003127-B
R000350-A
Baxi MainEco Combi and System 24 - 28 - 35 / 18 - 24
8. Checking and maintenance
02092014 - 7619497-02
55
