Shutting Down The System; Opening The Boiler Door; Separating The Neutralising System (If Installed) From The Boiler And Connecting The Drain Hose; Cleaning The Combustion Chamber And Heating Surfaces - Viessmann VITOCROSSAL 300 Service Instructions Manual

Commissioning, inspection, maintenance
Commissioning the system
7. Check the function of the neutralising system.
Neutralising system operating instructions
8. Check all gaskets and plugs, and retighten if neces-
sary.
Note
We recommend you check all connections on the
heating water side for leaks around every 500
hours run.

Shutting down the system

1. Isolate the system from the power supply and safe-
guard against re-connection.
2. Pull plug and from the burner.
fA lÖ

Opening the boiler door

1. Remove the gas supply pipe.
2. Undo 6 screws on the boiler door and open it.
Separating the neutralising system (if installed) from the boiler and
connecting the drain hose
B
A
C
Fig.2

Cleaning the combustion chamber and heating surfaces

!
Please note
Contact with unalloyed iron and scratches on
parts in contact with flue gases can lead to cor-
rosion.
Only use plastic brushes, not wire brushes or
sharp objects.
8
(cont.)
9. Check the boiler door and cleaning cover a few
days after commissioning and retighten all screws.
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.
1. Separate hose
trap .
B
2. Remove trap
B
3. Clean the inside of the condensate drain with a
plastic brush.
4. Connect drain hose
Connect drain hose
tion.
to the neutralising system from
A
from the condensate drain.
to the condensate drain.
C
to the on-site drain connec-
C