Shutting Down The System; Opening The Boiler Door; Separating The Neutralising System From The Boiler And Connecting The Drain Hose - Viessmann VITOCROSSAL 300 Type CT3 Service Instructions Manual

Further details regarding the individual steps
1. Undo nut A on lever B of rotary
damper C.
2. Adjust the lever until all pulsation
noise has ceased (the lever mirrors
the damper position).

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.
Separating the neutralising system from the boiler and connect-
ing the drain hose
1. Separate hose or pipe A to the neu-
tralising system from the flue gas col-
lector or siphon.
2. Remove the siphon (if installed) from
the condensate drain.
Commissioning, inspection, maintenance
3. Lock the rotary damper with nut A.
4. Re-adjust the burner if required.
2. Pull plug-in connector 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 put tools or other objects
into the combustion chamber.
A
3. Clean the inside of the condensate
drain with a plastic brush.
4. Connect the drain hose to the con-
densate drain and run to a sewer.
(cont.)
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