Viessmann B2TF Installation And Service Instructions Manual page 44

Commissioning, inspection, maintenance
Removing the burner
4x
G
D
C
B
Fig. 33
1. Turn off the ON/OFF switch.
2. Close the gas shut-off valve and safeguard against
reopening.
3. Release the clips and remove the cover panel.
4. Disconnect cables and leads from:
Fan motor
■ A
Adaptor, CAN bus fan
■ Ionisation electrode
■ Ignition unit
C
Earth
■ D
44
F
A
B
E
5. Undo gas supply pipe fitting
6. Detach Venturi extension
7. Undo 4 screws and remove the burner.
G
Note
Cover gas connection
can fall into it.
.
E
from fan unit.
F
E so that no small parts