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Installation sequence
Flue gas connection
Connect the flue gas/ventilation air pipe.
Flue system installation instructions
Connecting several Vitodens to a shared flue sys-
tem
If several Vitodens are connected to a common flue
system: Install a back draught safety device (accesso-
ries) in the flue gas connection and in the mixing shaft
of the burner on each boiler.
Installing the back draught safety devices:
Do not carry out commissioning until the following
conditions are met:
■
Free passage through the flue gas pipes.
Flue system with positive pressure is gas-tight.
■
Inspection port covers checked for secure and tight
■
seating.
■
Apertures for ensuring sufficient combustion air sup-
ply are open and cannot be closed off.
■
Applicable regulations on installing and commission-
ing flue systems have been followed.
18
Note
The "System certification" and "Skoberne GmbH flue
system" labels enclosed with the technical documenta-
tion may only be used in conjunction with the
Viessmann flue system made by Skoberne.
Installation instructions for back draught safety
device
Converting the control unit for use with a shared flue
system:
■
In the commissioning assistant, select the "Multiple
connections" setting under "Flue system type".
Danger
Leaking or blocked flue systems or an insuffi-
cient supply of combustion air cause life threat-
ening poisoning due to carbon monoxide in the
flue gas.
Ensure the flue system functions correctly. Aper-
tures for combustion air supply must not be able
to be closed off.
Prevent condensate drainage via a wind protec-
tor.
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