Checking The Flue Gas Temperature; Checking The Ionisation Current; Shutting Down The System; Opening The Boiler Door - Viessmann MatriX Service Instructions For Contractors

Commissioning, inspection, maintenance

Checking the flue gas temperature

Enter actual value into the report in the appendix.

Checking the ionisation current

Note
The ionisation current must be called up via the burner
control unit. It is not possible to check the ionisation
current with a Testomatik-Gas or a multimeter.
Press the following buttons:
01. Hold down S for approx. 2 s; " " flashes.
02. until "5" is shown under "Service".
03. Press S. "5" is displayed under "Status".
04. until "3" is shown under "Service".
05. Press S. "3" is shown under "Status"; under "Serv-
ice" the ionisation current is shown during opera-
tion (e.g. 30 = 3.0 A).
µ
06. Start the burner via menu point Emissions test
mode in the control unit menu.

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 gas fan
from the power supply.

Opening the boiler door

Danger
When working with high temperature insulating
materials that contain zirconium or aluminium
silicate ceramic fibres, fibre dust may
develop. This fibre dust can be harmful to
health.
Only trained personnel may adjust or replace
the insulation. Wear suitable protective clothing,
especially breathing equipment and safety gog-
gles.
20
07. Read the ionisation current.
08. Record the actual value in the report.
09. Hold down S for approx. 2 s; " " flashes.
10. until "5" is shown under "Service".
11. Press S. "5" is displayed under "Status".
12. until "0" is shown under "Service".
13. Press S. The operating display will be shown
again.
Note
Approx. 2 to 3 s after the gas train has opened and
during operation, the ionisation current should be at
least 3 A.
µ
2. Remove the connecting plug from the burner. See
Fig. 16.
3. Close the gas shut-off valve.