Vaillant ecoTEC plus VU Series, Installation Manual, Page: 36 / 60

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Air/flue pipe installation manual 0020308120_02
5.12 Installing the concentric
connection, 60/100 mm diameter, to the
air/flue system for negative pressure
5.12.1 Installation instructions
Set-up example:
Markings have been assigned to the air/flue system in ac-
cordance with EN 1443 and these indicate that the system
complies with the fundamental requirements of the construc-
tion products directive. The air/flue system is not approved
as part of the boiler.
The air/flue gas chimney must be designed and approved for
negative pressure mode by the manufacturer.
The air/flue gas chimney's data plate is marked for operation
with condensing boilers and a flue gas temperature of at
least 120 °C.
▶
Take into consideration the regulations with regard to fire
resistance.
The Vaillant ecoTEC gas-fired wall-hung boilers that are
mentioned in these installation instructions are approved for
the use of common flue systems for C43 units.
The length of the air/flue pipe must not exceed 1.4 m and
three elbows. This corresponds to a maximum length of 3.4
m for the C43 connection.
5.12.2 Components that are suitable for connection
–
87° elbow (article number 303910)
–
Extensions
–
470 mm (article number 303902)
–
970 mm (article number 303903)
–
970 mm (article number 303905)
–
Air pipe clamps (article number 303821)
5.12.3 Installing a connection to the air/flue system
Caution.
Risk of damage to the product.
There must not be any excess pressure in
the vertical part of the flue system, because,
in this case, the burner may pulse and the
product may become damaged. The product
is not suitable for this mode of operation and
has not been checked.
▶
Provide evidence of the functional reliab-
ility of the vertical flue pipework in accord-
ance with EN-13384 using the specific-
ations for flue gas temperature and flue
gas mass flow rate from the installation in-
structions for the product.
Caution.
Risk of damage to the structure of the
building.
The static function and fire-protective function
of the shaft wall may be impaired by fasten-
ings.
▶
Do not attach any fastenings using
screws, wall plugs, etc. directly to the
shaft wall of the air/flue system.
▶
Do not attach fastenings to primary
walling or sideways to the wall.
▶
Observe the specifications provided by
the manufacturer of the air/flue system.
B
A
A Air B Flue gas
▶
On the air/flue system, establish a connection for open-
flued operation.
–
For the connection height for the product (including
the connector for the air/flue pipe and inspection el-
bow), see the installation instructions for the product.