7 Start-up
20
Installation
and
maintenance
instructions
ecoTEC
pro
0020244995_02
7.8
Purging the heating installation
1.
Select the check programme
P.00
.
◁
The product does not start up, the internal pump
operates intermittently and purges either the heating
circuit or the hot water circuit.
◁
The display shows the filling pressure of the heating
installation.
2.
Make sure that the filling pressure of the heating install-
ation does not fall below the minimum filling pressure.
– ≥
0.08 MPa (
≥
0.80 bar)
◁
At the end of the filling procedure, the filling pres-
sure of the heating installation should be at least
0.02 MPa (0.2 bar) above the counter-pressure
of the expansion vessel ("Exp") (P
Installation
≥
P
Exp
+
0.02 MPa (0.2 bar)).
3.
If there is still too much air in the heating installation at
the end of the check programme
P.00
, repeat the check
programme.
7.9
Filling and purging the hot water system
1.
Open the cold water stop valve on the product.
2.
Fill the hot water system by opening all the hot water
draw-off valves until water escapes.
7.10
Filling the condensate trap
1
1.
Remove the lower section from the condensate trap
(1)
.
2.
Fill the lower section with water up to 10 mm below the
upper edge.
3.
Attach the lower section to the condensate trap.
7.11
Gas inspection
7.11.1 Checking the factory-set gas ratio setting
Caution.
Risk of material damage caused by mak-
ing unauthorised settings.
▶
Never modify the factory setting of the gas
pressure regulator of the gas valve.
▶
Before you start up the product, compare the gas group
information on the identification plate with the gas group
available at the installation site.
Conditions
: The product design is not compatible with the local gas group
Only Vaillant Service Solutions may perform a gas conver-
sion.
If a gas conversion to liquid gas has been carried out, the
smallest possible partial load is higher than is shown on the
display. The correct values can be found in the Technical
data in the appendix.
▶
Call Vaillant Service Solutions (0330 1003 143).
▶
Do not start up the product.
Conditions
: The product design is compatible with the local gas group
▶
Proceed as described below.
7.11.2 Checking the leak-tightness of the flue gas
installation and flue gas recirculation
1.
Check the flue gas installation is intact in accordance
with the latest gas safe technical bulletin and informa-
tion supplied in the installation instructions.
2.
For extended flue gas installations check for flue gas
recirculation using the air analysis point.
3.
Use a flue gas analyser.
4.
If you discover CO or CO
2
in the supply air, search for
the leak in the flue gas installation or for signs of flue
gas recirculation.
5.
Eliminate the damage properly.
6.
Check again whether the supply air contains any CO or
CO
2
.
7.
If you cannot eliminate the damage, do not start up the
product.
7.11.3 Checking the gas flow rate
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 follows:
▶
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.
