Opening The Boiler Door - Viessmann Vitocrossal 300 Service Instructions Manual

Opening the boiler door

Danger
When working with high temperature insulation
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 adapt or replace the
insulation. Wear suitable protective clothing,
especially breathing equipment and safety gog-
gles.
E
A
F
B
C
D
Fig. 11
1. Undo the quarter-turn rotary latches on the sides of
burner hood and remove burner hood
A
2. Release burner cables
the burner control unit and remove them from the
burner casing.
.
A
with plugs and at
C fA lÖ
Commissioning, inspection, maintenance
3. Release power cable
unit connecting cable
burner and the strain relief; remove them from the
burner casing.
4. Remove gas supply pipe
with plug and control
D fÖ
F with plug fÖ / aBH at the
.
B
15