Viessmann Vitocrossal 300 CT3 SERIES, Service Instructions Manual

Page: 9 / 36

9
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).
3.
Lock the rotary damper with nut
A
.
4. Re-adjust the burner if required.
Shutting down the system
1. Switch OFF the mains isolator or the
power supply and safeguard against
unauthorised reconnection. 2. Pull plug-in connector fA and lÖ
from the burner.
3. Close the gas shut-off valve.
Opening the boiler door
1. Remove the gas supply pipe.
2. Undo the screws on the boiler door
and open the door.
!
Please note
Scratches inside the combustion
chamber can lead to corrosion.
Never put tools or other objects
into the combustion chamber.
Separating the neutralising system from the boiler and connect-
ing the drain hose
A
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.
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.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5692 909 GB