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5 Maintenance [specialist]
5.1
Draining the solar circuit
WARNING
Danger of scalding due to hot solar fluid!
The escaping fluid may be very hot.
Place and secure the heat-resistant collecting container in such a way
4. Open the fill valve [h] of the transfer station.
5. To accelerate the draining of the solar circuit, the vent valve possibly
present at the highest point of the solar system can be opened.
6. Dispose of the solar fluid observing the local regulations.
5.2
Deinstallation
1. Drain the solar installation as described above.
2. Disconnect the pipe connections to the solar system.
3. Disconnect the cable connections between the controller and the sensors
(collector/storage tank).
4. Loosen the fastening screws of the station and take the station off the wall.
2016/05
that people standing nearby are not endangered during the draining of
the solar installation.
996091425-mub-en – V04
1. Switch off the controller and make sure
that a restart is not possible.
2. Open the check valves in the flow and
return ball valve [a|b] by turning them
into position 45° (see page 14).
3. Connect a heat-resistant hose to the
fill valve [h].
Make sure that the solar fluid is collected
in a heat-resistant container.
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