0020308119_02 Operating instructions 15
Validity: Product with integrated hot water generation
OR Product with integrated hot water generation and
shift-load cylinder
▶ Open all radiator valves (thermostatic
valves) of the heating installation.
▶ Fit the double non-return valve (1) of
the filling line to the cold-water isolation
valve and secure the valve with the
spring clip (2).
▶ To fill, first open the isolation valve (3).
▶ Open the isolation valve (4) so that the
water flows into the heating system. Fill
the heating installation.
▶ Monitor the rising filling pressure in the
heating installation.
▶ Fill with water until the required filling
pressure is reached.
▶ After filling, close isolation valve (4) first
and then isolation valve (3). Disconnect
the filling device by removing the double
non-return valve from the cold-water
isolation valve.
Note
Both isolation valves must be
closed while the heating install-
ation is operating and the filling
line must be removed from the
double non-return valve again.
Validity: Product with connected domestic hot water
cylinder
▶ Carry out the filling and purging process
as explained to you by the competent
person.
▶ Open the heating water supply.
▶ Open all radiator valves (thermostatic
valves) of the heating installation.
▶ If necessary, check that both service
valves on the product are open.
▶ Slowly open the filling/draining cock
so that the water flows into the heating
installation.
▶ Monitor the rising filling pressure in the
heating installation.
▶
Fill with water until the required filling
pressure is reached.
▶ Close the filling device as explained to
you by the competent person.
The prerequisite for the purging is that
the heating installation is under sufficient
pressure. The heating installation can now
be purged again. Our recommendation:
The heating installation should be purged
once a year before the heating season.
The purging may be varied. If required,
consult your competent person for more
information.
▶ Start the purging at the radiators that
are closest to the heat generator, and
continue with the radiators that are po-
sitioned further away. Purge until the
water flows out at the purging valve
without any bubbles.
▶ Purge all of the radiators until the entire
heating installation is filled with water.
▶ Close all purging valves.
Note
If you notice that the purging
output decreases, check the
pressure in the interim and, if re-
quired, re-establish the target
pressure level by filling the in-
stallation.
Following purging, the pressure level has
fallen.
▶ Lastly, check the filling pressure once
again and, if required, adjust this again.
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