Shutting Down The System; Checking The Burner Gauze Assembly; Checking The Ignition Electrodes And Ionisation Electrode - Viessmann MatriX Service Instructions For Contractors

Commissioning, inspection, maintenance

Shutting down the system

1. Switch OFF the mains isolator or the power supply
and safeguard against unauthorised reconnection.
Danger
Mains voltage can be life-threatening.
For maintenance work, isolate the system
from the power supply.

Checking the burner gauze assembly

Danger
Escaping gas leads to a risk of explosion.
Close the gas shut-off valve.
C
B
A
Fig. 11
1. Undo fitting from the gas supply pipe.
A

Checking the ignition electrodes and ionisation electrode

Ignition electrodes
3,5±0,5
Fig. 12
14
2. Remove the burner hood.
3. Remove burner cable with plug
burner control unit and pull out of the burner cas-
ing.
4. Close the gas shut-off valve.
2. Undo the screws on the boiler door and open the
door.
3. Check the wire mesh of burner gauze assembly
and thermal protection ring
wavy deformations of burner gauze assembly
are OK.
4. If required, replace burner gauze assembly
together with thermal protection ring
!
Please note
Scratches inside the combustion chamber can
lead to corrosion.
Never place tools or other objects inside the
combustion chamber.
Burner component installation instructions
For cleaning the combustion chamber and flues,
see boiler service instructions.
Ionisation electrode
Fig. 13
Check ignition electrodes and ionisation electrode for
correct gap to the burner gauze assembly and for pos-
sible damage. Replace electrodes if required.
Installation instructions "Replacing burner com-
ponents"
and from the
fA lÖ
B
C for damage. Slight
B
B
.
C