Vaillant ECOTEC PLUS VU 80, Installation And Maintenance Instructions Manual

Page: 17 / 76

Gas installation
ecoTEC plus installation and maintenance instructions 0020134823_01
17
5
5 Gas installation
The work described in this section must only be carried out
by a competent person.
5.1 Preparing for installation
a
Danger!
Risk of death caused by improper gas
installation!
An incorrect gas installation may result in
leaks and an explosion.
>
During installation, the legal directives
and the local regulations for gas supply
companies must be observed.
a
Danger!
Risk of death caused by improper gas
installation!
Tension in the gas line may result in leaks
or an explosion.
>
Make sure there are no stresses in the
gas lines when it is installed.
b
Caution.
Risk of material damage caused by incor-
rect gas installation.
Excess test pressure may cause damage to
the gas valve.
>
When checking the gas valve for leak-
tightness, use a max. test pressure of
1.1 kPa (110 mbar).
>
During the gas installation, ensure that
the home pressure regulation for the
required gas flow pressure of 5 mbar is
maintained in accordance with the tech-
nical data (
¬ section 18 ).
b
Caution.
Risk of material damage caused by con-
taminated lines.
Foreign bodies, such as welding remnants,
sealing residue or dirt in the supply lines
for gas, may cause damage to the boiler.
>
Blow the gas line thoroughly clean prior
to installation.
b
Caution.
Risk of material damage caused by the
incorrect gas type.
Using the wrong gas type may cause a fault
shutdown on the boiler. Furthermore, igni-
tion and combustion noise may occur in the
boiler.
>
Only use the gas type specified in the
type overview (
¬ section 1.5 ).
5.2 Connecting the gas line
5.1 Gas connection
>
Fit an approved gas valve to the unit with a screw
connector.
>
Fit the gas supply line to the gas valve.
>
Purge the gas line before you start up the unit.
>
Check the gas connection for leak-tightness.