Vaillant ecoFIT pure Installation And Maintenance Instructions Manual - page 18
8 Adapting the unit to the heating installation
18
Installation and maintenance instructions ecoFIT pure 0020230535_01
▶
Allow the boiler to cool down by allowing pump overrun
to operate for a minimum of two minutes.
▶
Close the gas isolator cock.
▶
Remove the pressure gauge and retighten the sealing
screw (2) for the measuring nipple.
▶
Open the gas isolator cock (1).
▶
Check the measuring nipple for gas tightness.
▶
Close the gas isolator cock (1).
▶
Install the front casing. (→ Page 9)
▶
Disconnect the product from the power mains.
▶
You must not start up the boiler.
Conditions: Gas flow pressure in the permissible range
▶
End the check programme P.01.
▶
Allow the boiler to cool down allowing pump overrun to
operate for a minimum of two minutes.
▶
Close the gas isolator cock (1).
▶
Remove the pressure gauge and retighten the sealing
screw (2) for the measuring nipple.
▶
Open the gas isolator cock (1).
▶
Check the measuring nipple for gas tightness.
▶
Install the front casing. (→ Page 9)
▶
Reset boiler controls for normal operation.
▶
Record the appliance gas inlet working pressure (kPa
resp. mbar) in the Benchmark gas boiler commissioning
checklist.
7.8.2
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.
7.8.3
Checking the CO₂ content
1.
Start up the product with check programme (P.01).
Overview of the check programmes (→ Page 15)
2.
Wait until the value that is read is stable.
– Waiting period for reading a stable value: 5 min
1
3.
Unscrew the cover from the flue gas analysis point (1).
4.
Measure the CO₂ content at the flue gas analysis point
(1).
5.
Compare the measured value with the corresponding
value in the table.
Checking the CO₂ content
Great Bri-
tain
Removed
front cas-
ing/installed
front casing
Natural gas
G20
9.2 ±1 %
◁
The value is OK.
▽
The value is not OK; you cannot start up the
product.
▶
Inform Customer Service.
7.9
Checking leak-tightness
▶
Check the gas pipe, the heating circuit and the hot water
circuit for leak-tightness.
▶
Check that the air/flue pipe has been installed correctly.
Conditions: Room-sealed operation
▶
Check whether the vacuum chamber has been sealed so
that it is leak-tight.
7.10
Checking the heating mode
1.
Activate the heating mode on the user interface.
2.
Turn all thermostatic radiator valves on the radiators
until they are fully open.
3.
Allow the product to operate for at least 15 minutes.
4.
Purge the heating installation.
5.
Call up the Live Monitor.
– Menu → Live Monitor
Status codes – Overview (→ Page 28)
◁
If the product is working correctly, the display shows
S.04.
8
Adapting the unit to the heating
installation
You can reset/change the system parameters (section "Us-
ing diagnostics codes").
Overview of diagnostics codes (→ Page 25)