System conditions
16
Installation manual for the flue pipe for ecoTEC plus 0020137851_02
5
5.2
Performance features of the flue pipes from
Vaillant for condensing units
The air/flue gas systems from Vaillant demonstrate the fol-
lowing performance features:
Performance feature
Description
Temperature resistance:
Adapted to the maximum flue gas
temperature of the unit
Leak-tightness:
Adapted to the unit for use in build-
ings and outdoors
Condensate resistance:
Yes, for gas and oil
Corrosion resistance:
Adapted to the gas and oil condens-
ing boiler
Clearance from combusti-
ble materials:
- Concentric flue gas pipe:
No clearance required
- Non-concentric flue gas pipe: 5 cm
Installation site:
In accordance with the installation
instructions
Resistance to fire:
Normal level of flame resistance
(in accordance with EN 13501-1
Class E)
Fire resistance time:
No, the external pipes of the concen-
tric system are not flammable. A
required fire resistance time is pro-
vided by shafts within the building.
5.2 Performance features
5.3
Requirements for the shaft for the flue pipe
Flue pipes from Vaillant do not have any fire resistance
(direction of operation from the outside to the inside).
If the flue pipe is guided through parts of a building that
require a level of fire resistance, a shaft must be fitted. The
shaft must ensure the fire resistance (direction of operation
from the outside to the inside) that is required for the build-
ing parts through which the flue gas installation is guided.
The required fire resistance must demonstrate a suitable
classification (brick partition and heat insulation) and be
sufficient for the building's requirements.
Observe the national ordinances, regulations and standards.
An existing chimney that was used for the flue gas evacua-
tion usually meets these requirements and can be used as a
shaft for the flue pipe.
The gas tightness of the shaft must comply with the test
pressure class N2 in accordance with EN 1443.
An existing chimney that was used for the flue gas evacua-
tion usually meets these requirements and can be used as a
shaft for the air guiding.
If the shaft is used to supply combustion air, this must be
designed and, in particular, insulated in such a way that no
moisture (caused by the cooling of the shaft by cold com-
bustion air penetrating from the outside) can penetrate the
exterior of the shaft.
An existing chimney that was used for the flue gas evacua-
tion usually meets these requirements and can be used as a
shaft for the air guiding without the need for additional
heat insulation.
5.4
Location of the opening
Align the opening of the flue gas installation in such a way
that ensures a secure outward flow and distribution of the
flue gases and prevents these gases from re-entering the
building through openings (windows, air intake openings
and balconies).
The location of the flue gas installation opening must com-
ply with the relevant applicable international, national and/
or local regulations.
5.5 Disposing
of
condensate
When disposing of the condensate into the public waste-
water system, observe the local regulations.
Local regulations may stipulate the minimum quality of any
condensate that may enter the waste-water system, for
example, through using a condensate neutraliser.
Only use corrosion-resistant piping material for removing
condensate.
5.6
Route of the flue pipe in the building
The route of the flue pipe should correspond to the short-
est and the most direct distance between the unit and the
flue gas installation opening, and it should run as straight
as possible. Do not arrange several diversions immediately
after each other.
Lay the flue pipe separately from the drinking water pipes.
As a result of standards relating to the hygiene of drinking
water, water pipes must be protected against impermissible
heating.
The entire length of the flue gas route must be inspected
and, if required, cleaned.
It must be possible to remove the flue pipe again with a
minimal amount of effort (no time-consuming mortising
work in the living area, but screwed-in cladding instead). If
they are arranged in shafts, they are usually easy to
remove.
