Vaillant ecoTEC plus VU Series Installation And Maintenance Instructions Manual - page 19
Start-up 6
0020029173_04 ecoTEC plus Installation and maintenance instructions
19
6.9
Filling the condensate trap
Danger!
Risk of poisoning due to escaping flue
gas.
An empty or insufficiently filled condensate
trap may allow flue gas to escape into the
room air.
▶
Fill the condensate trap with water before
starting up the product.
1
1.
Install the condensate trap's cartridge (1) in accordance
with the enclosed installation manual.
2.
Fill the condensate trap in accordance with the en-
closed description.
6.10
Gas ratio setting
6.10.1 Checking the factory setting
Caution.
An incorrect gas group setting may cause
operating faults or a reduction in the
working life of the product.
If the product design does not match the local
gas group, malfunctions will occur or you will
have to replace product components prema-
turely.
▶
Before you start up the product, compare
the gas group information on the identific-
ation plate with the gas group available at
the installation site.
The product's combustion has been factory tested and is
preset for operation with the gas group indicated on the iden-
tification plate. In some supply areas, these settings may
need to be adjusted at the installation site.
Conditions: The product design is not compatible with the local gas
group
▶
Do not start up the product.
Conditions: The product design is compatible with the local gas group
▶
Proceed as described below.
6.10.2 Checking the leak-tightness of the flue gas
system and for flue gas recirculation
1.
Check that the flue gas system is intact, in accordance
with British Gas TB 200.
2.
If the flue gas system is longer than 2 m, we urgently
recommend that you test the system for flue gas recir-
culation as described below.
1
3.
Use the air analysis point (1) to check for flue gas recir-
culation.
4.
Use the flue gas measuring instrument.
5.
If you discover CO or CO2 in the fresh air, search for a
leak in the flue gas system or for the flue gas recircula-
tion.
6.
Eliminate the damage.
7.
Repeat the above-mentioned test to determine if the
fresh air contains CO or CO2.
8.
If you cannot eliminate the damage, you must not start
up the boiler.
6.10.3 Checking the gas flow rate
The boiler is fitted with a multifunctional automatic gas valve
which ensures that the precise air/gas ratio is provided un-
der all operating conditions. The gas flow rate has been set
during production and does not require adjustment. With the
front casing fitted check the gas flow rate of the boiler as fol-
lows:
▶
Start up the product with the check programme P.01.
▶
In addition, ensure that maximum heat can be dissipated
into the heating system by turning up the room thermo-
stat.
▶
Wait at least 5 minutes until the boiler has reached its
operating temperature.
▶
Ensure that all other gas appliances in the property are
turned off.
▶
Measure the gas flow rate at the gas meter.
▶
Compare the measured values with the corresponding
values in the table.
Nominal value for the
net heat supply in kW
in accordance with
BS EN 483
H gas in m³/h
Nominal
+5%
−10%
76.2
8.10
8.51
7.29
95.2
10.10
10.61
9.09
114.3
12.10
12.71
10.89