Operation
12
Operating instructions ecoTEC pro 0020129673_00
5
5.1.3
Checking the filling pressure of the heating
system
b
Caution!
Low filling pressure can cause damage to
the unit.
Operating the heating installation with low
filling pressure can cause damage to the
boiler and the heating installation. The
boiler switches off automatically when the
filling pressure falls too low.
>
Fill up the heating system as soon as the
filling pressure falls below 0.08 MPa
(0.8 bar).
To avoid operating the system with insufficient water vol-
ume and to prevent possible damage associated with this,
your boiler is fitted with a pressure sensor and a digital
pressure display.
To ensure that the heating system operates smoothly, the
filling pressure when the heating system is cold must be
between 0.1 MPa and 0.2 MPa (1.0 bar and 2.0 bar) or lie
between the two dotted lines in the bar graph display.
If the heating system extends over several storeys, a higher
filling pressure may be required for the heating system.
>
Ask your approved skilled tradesman for details about
this.
If the pressure falls below 0.08 MPa (0.8 bar), the right-
hand bar graph display and the current pressure flash in
the display.
>
Fill up the heating system (
¬ Section 5.1.4
).
i
Switch off the boiler if the filling pressure in the
heating system falls below 0.05 MPa (0.5 bar).
The display alternates between the fault mes-
sage F.22 and the current filling pressure.
The heating installation must be topped up with water
before the boiler can be put into operation again. As soon
as the system has been topped up with sufficient water, the
message disappears automatically after approx. 20 sec-
onds. If the pressure drops frequently the reason for the
loss of hot water must be identified and eliminated
>
Contact your heating engineer.
You can see the filling pressure in the right-hand bar graph
display or display the exact value using the selection but-
tons to the right of the display.
0,8
3,0
1,0
1
2
3
5.3 Digital display of filling pressure
>
Press the right-hand selection button
twice.
The current filling pressure (
1
) and the minimum (
3
) or
maximum water pressure (
2
) that is to be set appear in the
display.
5.1.4
Filling the heating system
b
Caution!
Risk of damage caused by tap water that
is extremely calciferous or corrosive or
contaminated by chemicals.
Unsuitable tap water damages the seals
and diaphragms, blocks components in the
boiler and heating installation through
which the water flows and causes noise.
>
Only fill the heating installation with suit-
able tap water.
>
In case of doubt, consult your approved
skilled tradesman regarding this.
To fill up and to refill the heating installation, you can nor-
mally use tap water. In exceptional cases, however, the
water quality may not be suitable for filling the heating
installation because the water is highly corrosive or calcif-
erous.
>
If this is the case, contact your approved heating engi-
neer.
The heating installation is filled via a filling cock provided
by the installer.
>
Ask your approved skilled tradesman where the filling
cock is located.
>
Ask your approved skilled tradesman to explain how to
fill the heating system.
You can show the exact filling pressure in the display
(
¬Section 5.1.3
).
Summary of Contents for ecoTEC pro
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