Shutting Down The System; Opening The Boiler Door - Viessmann VITOCROSSAL 300 Service Instructions Manual

Further details regarding the individual steps
A
B
C
D

Shutting down the system

1. Switch OFF the mains isolator or the
power supply, and safeguard against
unauthorised reconnection.

Opening the boiler door

1. Remove the gas supply pipe.
2. Undo the screws on the boiler door
and open the door.
E
Commissioning, inspection, maintenance
1. Remove back panel C; for this undo
quarter-turn closures E.
2. Undo nut A on lever B of rotary
damper D.
3. Adjust the lever until all pulsation
noise has ceased (the lever mirrors
the position of the rotary damper).
4. Lock the rotary damper with nut A.
5. Remount the back panel.
6. Re-adjust the burner if required.
2. Pull plug-in connectors fA and lÖ
from the burner.
3. Close the gas shut-off valve.
!
Please note
Scratches inside the combustion
chamber can lead to corrosion.
Never place tools or other objects
inside the combustion chamber.
(cont.)
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