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7.4
Preventing low water pressure
The required filling pressure is between 0.08 and 0.2 MPa
(0.8 and 2 bar).
If the water pressure falls below 0.05 MPa (0.5 bar), the
value flashes in the display.
If the water pressure falls below 0.03 MPa (0.3 bar), the
product switches off. The display shows 0.0 bar (0.0 MPa).
Fault F22 is stored in the fault list.
▶
Top up the water in the heating installation to start up the
product again.
◁
The pressure value flashes in the display until a
pressure of 0.05 MPa (0.5 bar) or higher has been
reached.
7.5
Filling the condensate siphon
C
1.
Unclip the lower section of the siphon (1) from the up-
per section of the siphon (2) without removing the pro-
duct's front casing.
2.
Remove the float (3).
3.
Fill the lower section of the siphon with water up to 10
mm below the upper edge of the condensate discharge
pipe.
4.
Reinsert the float (3).
Note
Check that the float is present in the con-
densate siphon.
5.
Clip the lower section of the siphon (1) into the upper
section of the siphon (2).
0020258016_01 ecoTEC pure Installation and maintenance instructions
2
A
B
3
1
7.6
Filling and purging the heating installation
Preliminary work
1.
Flush the heating installation through.
2.
Observe the information on the topic of treating
(→ Page 18) heating water.
1
1.
Loosen the cap on the automatic air vent (1) by one or
two rotations.
2.
Open all thermostatic radiator valves.
3.
Supply the heating circuit with water.
4.
Check whether the stop cocks for the heating flow and
return are open.
5.
Start filling programme P.06.
◁
The diverter valve is moved to the mid-position.
6.
Fill with water until the required filling pressure is
reached.
–
Recommended filling pressure: 0.8 ... 2 bar
◁
The heating and hot water function cannot be activ-
ated.
◁
The pressure value flashes in the display until a
pressure of 0.05 MPa (0.5 bar) or higher has been
reached.
◁
An automatic air vent function is activated if the
pressure exceeds 0.07 MPa (0.7 bar) for longer than
15 seconds.
7.
Purge each radiator until the water escapes normally,
and then close the system's purging valves.
Note
Leave the cap on the pump's air vent valve
unscrewed.
8.
Check whether all connections are leak-tight.
Conditions: If the noise persists in the boiler
▶
Purge the product again by activating check programme
P.00.
Start-up 7
19
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