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2 Safety
▶
When fitting the flue pipes, make absolutely sure the
seals are correctly positioned. The lip of the seal must
be facing inwards (1), not outwards (2).
▶
Do not use any damaged seals.
Mortar residues, shavings, etc. in the flue pipe may restrict
the outward flow of the flue gas. Flue gas may escape into
the room.
▶
After installation, remove all mortar residues, shavings,
etc. from the flue pipe.
Extensions that are not secured to the wall or ceiling may
bend and separate due to thermal expansion.
▶
Secure each extension to the wall or ceiling using a pipe
clamp.
▶
Where possible, use the original pipe clamps from the
product range.
–
If you are using standard pipe clamps, the tension-
ing range must be between 130 mm, 160 mm and
200 mm, and the bearing capacity must be at least
200 kg.
–
The distance between two pipe clamps must not be
greater than the length of the extension.
–
The pipe clamps must be isolated from structure-
borne sound.
The flue gas pipe expands when warm. If the pipes are ob-
structed when expanding, this may lead to a forced fracture
and flue gases will escape.
▶
Secure each of the pipe clamps to the wall or the ceiling
using a hanger bolt or threaded bolt M8/M10. This allows
for sufficient elasticity of the fastening in the event of
thermal expansion of the pipes.
▶
Secure the pipe clamps using hanger bolts or stud bolts.
Loads on the flue gas guiding may damage the flue gas pipe
and lead to flue gas escaping.
▶
Do not secure any loads to the flue gas guiding.
Mechanical impact loading of the flue gas pipe may damage
the flue gas pipe. Flue gases may escape.
▶
Do not install the flue gas pipe in areas with mechanical
impact loading. The flue gas pipe can also be protected
against impact using protection devices that are created
on-site.
Standing condensate can damage the seals of the flue gas
pipe.
▶
Route the horizontal flue pipe with a downward gradient.
6
–
Downward gradient to the product: 3°
Note
1
3° corresponds to a downward gradient of
approx. 50 mm per metre of pipe length.
2.3.4
Risk of death from flue gas escaping from
openings in the flue pipe
2
All openings in the flue pipe that can be opened for inspec-
tion purposes must be closed before start-up and during op-
eration.
▶
The openings of the flue pipe must only be opened by a
competent person.
2.3.5
Risk of fire and electronic damage caused
by missing lightning protection for the flue
gas installation
The product may be damaged by the effects of lightning and
this may lead to fires.
▶
If the building is equipped with a lightning protection sys-
tem, incorporate the air/flue gas pipe into the lightning
protection.
▶
If the vertical flue gas pipe contains materials made from
metal, incorporate it into the potential balancing system.
2.3.6
Risk of injury from snow falling from roofs
Where flue pipes penetrate the roof skin, the water vapour
contained in flue gas may precipitate as ice on the roof or the
roof structures in unfavourable weather conditions.
▶
At the installation site, ensure that this ice build-up does
not slide from the roof.
▶
If necessary, install an ice collection mesh.
2.3.7
Risk of suffocation from lack of rear
ventilation
The flue gas pipe is not ventilated from behind.
If the installation room for the product is not ventilated, there
is a risk of suffocation.
▶
In the installation room, build a ventilation opening that
leads outside.
–
Cross-sectional area: 150 cm²
2.3.8
Risk of corrosion in the flue gas installation
Sprays, solvents, cleaning agents, paints and adhesives may
contain substances that could lead to corrosion in the flue
gas installation in some circumstances when the product is
in operation.
▶
Ensure that the combustion air that is guided to the
product is kept free of chemical substances that may
contain fluorine, chlorine, or sulphur, for example.
▶
Only use appropriate Vaillant components for installing
the flue gas guiding.
Installation manual Air/flue gas system 0020058722_04
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