Flue Gas System Connections; Connection Options; Classification Of Type According To The Discharge Of Combusted Gases And Air Supply; Connection Conditions - DeDietrich C 230 ECO Installation And Service Manual

4.6 Flue gas system connections

4.6.1

Connection options

Prior to installation, it must be decided whether the boiler is to be
installed traditionally or with a forced flue.
4.6.2

Classification of type according to the discharge of combusted gases and air supply

EC classification:
Type B23 / B23p: Traditional unit without cut-off. Air from the room
in which the boiler is installed, combusted gas discharge through the
roof. Metal or plastic combusted gas evacuation with pictograms CE,
complies with pressure class P1.
Type C13: Forced flue unit, connected to the combined outlet on the
front.
Type C33: Forced flue unit, connected to the combined outlet to the
roof.
4.6.3

Connection conditions

Connecting the combusted gas discharge and air inlet conduits:
The welds and connections used on the combusted gas discharge
duct must be watertight.
The horizontal sections must be inclined towards the boiler (minimum
5 mm per metre).
Combusted gas evacuation ducts of more than 2 m must be secured
separately and not rest on the boiler.
Materials used:
Combusted gas evacuation systems must preferably be made of
plastic.
If using other systems, the following materials may be used:
- With a single, rigid or flexible outer casing: aluminium, stainless
steel or even plastic.
- Hose: stainless steel or plastic.
A broad range of flue gas system accessories is available as optional
equipment.
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Type C43: Forced flue unit with cascade coupling, connected to a
common air inlet and combusted gas discharge duct (system 3 CE).
Type C53: Forced flue unit, connected to different air inlet and
combusted gas discharge ducts, coming out in areas of different
pressure.
Type C63: Force flue unit, sold without equipment for connection
and/or outlet.
Type C83: Forced flue appliance, connected to a different air inlet
and combusted gas discharge duct with a combusted gas discharge
duct operating on a vacuum.
C 230 ECO 03/10/2012 - 300015171-001-01