S I M 13. Remove Burner - Viessmann VITODENS 100-W WB1B Series Installation And Service Instructions Manual

Initial Start-up, Inspection and Maintenance
Steps
(continued)
Maintenance
Start-up and Maintenance
Fig. 58
56
13. Remove burner
1. Switch the burner OFF (shut off
main service switch).
2. Shut off the gas supply.
3. Pull power cables from fan motor
A, gas valve B and electrode
block C.
4. Pull the Venturi extension D from
the fan.
CAUTION
To avoid damage to the burner,
do not lay burner on its cylindrical
burner tube.
Failure to heed this caution may
cause damage to the burner
tube, which may lead to improper
operation.
5. Release gas supply pipe fitting E.
Note:
There is a gasket between the gas
valve and this connection.
6. Loosen four Torx (T-30) screws
F and remove burner.