5 Maintenance [specialist]
2017/05
99609x4x5-mub-en – V05
21
5.1
Draining the solar station
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 to position 45°
(see page 14).
3.
Connect a heat-resistant hose to the fill valve [g]
of the transfer station.
Make sure that the solar fluid is collected in a
heat-resistant container.
WARNING
Danger of scalding due to hot solar fluid!
The escaping fluid may be very hot.
Place the collecting container so that people standing nearby are not
endangered when the solar installation is being emptied.
4.
Open the fill and drain valve [g] of the transfer station.
5.
To accelerate draining of the solar circuit, you can open the vent valve,
if present, at the highest point of the solar thermal system.
6.
Dispose of the solar fluid observing the local regulations.
5.2
Deinstallation
1.
Drain the solar thermal installation as described above.
2.
Disconnect the pipe joints with the solar thermal system.
3.
Disconnect the cable connections between controllers and sensors
(collector/storage tank).
4.
Loosen the fastening screws of the station and take the station off the wall.