Pressure Testing, Filling And Flushing The System; Flushing And Filling; Pressure Testing; Bleeding - Meibes SolaVentec II Technische Information Für Montage Und Betrieb

4. Pressure testing, filling and flushing the system

4.1 Flushing and filling

Remove the thermostatic actuator to flush and fill the system, thus fully opening the valve (see section 3.4). In addition, set the adjusting
screw on the volumetric flow limiter to the position with the tip facing forwards (see figure of lower shut-off valve in section 3.2: spindle
position 3). Open both fill and drain ball valves on the small manifold (see fig.).
Attention:
• Valve block: Actuator removed
• Lower shut-off: Tip of the adjusting screws face forwards
Adjusting
screw
of the small
manifold
System temperature > 60°C (risk of scalding)

4.2 Pressure testing

Check connections, components and joints for leak tightness. In the event of leaks, drain the system, repair and repeat the pressure testing.

4.3 Bleeding

Improper bleeding results in a drop in pressure and can lead to faults in the solar system. The temperatures of the escaping air and the heat
transfer medium may be greater than 60°C and therefore there is an increased risk of scalding. The manual air bleed device is located on
the top of the thermal siphon (see fi g.). After bleeding the system carefully and properly, the system pressure must be increased once again
to the operating pressure! Bleed the system occasionally at the permanent air vent in the operating state.
Actuator
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