Atag XL-F 105, Manual

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Flue gas system
Connections
Air - / flue gas ducts– installation variants for individual boilers
Opting for a collective flue gas outlet is
determined by:
- The position of the boilers with regard
to their outlet area
- Sufficient space above the boilers
- Large number of boilers
You may opt for:
- Collective flue gas outlet under -
pressure
- Collective flue gas outlet over - pressure
In many situations, flue gases cannot be vented individually because the instal-
lation is indoors. For such situations, we recommend collective venting by me-
ans of under
- pressure or over - pressure using a flue gas outlet system. The air
supply may also be supplied collectively, but if the boiler room is suitable for that
purpose for that purpose it may also be obtained ffrom this area (`open device`
Boiler category B).
If you install a common duct providing combustion air to more than one appli-
ance, there is a risk that combustion air would be drawn from an adjacent appli-
ance.
This may then be subject to a negative pressure.
In case of collective venting of flue gases, the flue gas - veting outlet al-
ways has to end up in the open area (outlet area 1) according to Country
specific regulations.
ATAG can supply a collective flue gas outlet system for the ATAG XL - F. Refer to the following chapters with regard to the
various possibilities and maximum pipe lengths than can be used.