0020244998_04 ecoTEC plus Installation and maintenance instructions
31
installation and open the purging valves on the radiators
so that the contaminated water can completely drain.
4.
Close the draining cocks.
5.
Refill the heating system with water.
6.
Check that the expansion relief valve of the heating
system is functioning correctly by turning the handle
on the valve.
7.
Check the pressure in the heating system and top up
with water if necessary.
8.
Close the filling valve and the cold water tap.
9.12
Filling the heating installation
1
1.
Flush the heating installation through.
2.
Undo the cap of the automatic air vent
(1)
by one to two
rotations and leave it open, as the product purges itself
via the automatic air vent even in continuous mode.
3.
Select the check programme
P.06
.
◁
The diverter valve moves to the mid-position, the
pumps do not run and the product does not switch
to heating mode.
4.
Observe the information on treating heating water.
(
5.
Check all connections and the entire system for leaks.
3
1
2
4
6.
Open all radiator valves (thermostatic radiator valves) of
the heating installation.
7.
Fit the double non-return valve
(1)
of the filling line to
the cold water stop valve and secure the valve with the
spring clip
(2)
.
8.
To fill, first open the stop valve
(3)
.
9.
Open the stop valve
(4)
so that the water flows into the
heating system. Fill the heating system.
10. Purge the lowest radiator until water flows out of the
purging valve without bubbles.
11. Purge all other radiators until the entire heating system
has been filled with water.
12. Close all purging valves.
13. Monitor the rising filling pressure in the heating installa-
tion.
14. Fill with water until the required filling pressure is
reached.
15. After filling, close both stop valves and disconnect the
filling device by removing the double non-return valve
from the cold water stop valve.
Note
Both stop valves must be closed while the
heating system is operating and the filling
line must be removed from the double non-
return valve again.
9.13
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.
9.14
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.
9.15
Gas inspection
9.15.1 Checking the factory-set gas 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 data plate with the gas group available
at the installation site.
